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Changelog for restic 0.16.2 (2023-10-29)

The following sections list the changes in restic 0.16.2 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #4540: Restore ARMv5 support for ARM binaries
  • Fix #4545: Repair documentation build on Read the Docs

Details

  • Bugfix #4540: Restore ARMv5 support for ARM binaries

    The official release binaries for restic 0.16.1 were accidentally built to require ARMv7. The build process is now updated to restore support for ARMv5.

    Please note that restic 0.17.0 will drop support for ARMv5 and require at least ARMv6.

    https://github.com/restic/restic/issues/4540

  • Bugfix #4545: Repair documentation build on Read the Docs

    For restic 0.16.1, no documentation was available at https://restic.readthedocs.io/ .

    The documentation build process is now updated to work again.

    https://github.com/restic/restic/pull/4545

Changelog for restic 0.16.1 (2023-10-24)

The following sections list the changes in restic 0.16.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #4513: Make key list command honor --no-lock
  • Fix #4516: Do not try to load password on command line autocomplete
  • Fix #4523: Update zstd library to fix possible data corruption at max. compression
  • Chg #4532: Update dependencies and require Go 1.19 or newer
  • Enh #229: Show progress bar while loading the index
  • Enh #4128: Automatically set GOMAXPROCS in resource-constrained containers
  • Enh #4480: Allow setting REST password and username via environment variables
  • Enh #4511: Include inode numbers in JSON output for find and ls commands
  • Enh #4519: Add config option to set SFTP command arguments

Details

  • Bugfix #4513: Make key list command honor --no-lock

    The key list command now supports the --no-lock options. This allows determining which keys a repo can be accessed by without the need for having write access (e.g., read-only sftp access, filesystem snapshot).

    https://github.com/restic/restic/issues/4513 https://github.com/restic/restic/pull/4514

  • Bugfix #4516: Do not try to load password on command line autocomplete

    The command line autocompletion previously tried to load the repository password. This could cause the autocompletion not to work. Now, this step gets skipped.

    https://github.com/restic/restic/issues/4516 https://github.com/restic/restic/pull/4526

  • Bugfix #4523: Update zstd library to fix possible data corruption at max. compression

    In restic 0.16.0, backups where the compression level was set to max (using --compression max) could in rare and very specific circumstances result in data corruption due to a bug in the library used for compressing data.

    Restic now uses the latest version of the library used to compress data, which includes a fix for this issue. Please note that the auto compression level (which restic uses by default) was never affected, and even if you used max compression, chances of being affected by this issue were very small.

    To check a repository for any corruption, run restic check --read-data. This will download and verify the whole repository and can be used at any time to completely verify the integrity of a repository. If the check command detects anomalies, follow the suggested steps.

    To simplify any needed repository repair and minimize data loss, there is also a new and experimental repair packs command that salvages all valid data from the affected pack files (see restic help repair packs for more information).

    https://github.com/restic/restic/issues/4523 https://github.com/restic/restic/pull/4530

  • Change #4532: Update dependencies and require Go 1.19 or newer

    We have updated all dependencies. Since some libraries require newer Go standard library features, support for Go 1.18 has been dropped, which means that restic now requires at least Go 1.19 to build.

    https://github.com/restic/restic/pull/4532 https://github.com/restic/restic/pull/4533

  • Enhancement #229: Show progress bar while loading the index

    Restic did not provide any feedback while loading index files. Now, there is a progress bar that shows the index loading progress.

    https://github.com/restic/restic/issues/229 https://github.com/restic/restic/pull/4419

  • Enhancement #4128: Automatically set GOMAXPROCS in resource-constrained containers

    When running restic in a Linux container with CPU-usage limits, restic now automatically adjusts GOMAXPROCS. This helps to reduce the memory consumption on hosts with many CPU cores.

    https://github.com/restic/restic/issues/4128 https://github.com/restic/restic/pull/4485 https://github.com/restic/restic/pull/4531

  • Enhancement #4480: Allow setting REST password and username via environment variables

    Previously, it was only possible to specify the REST-server username and password in the repository URL, or by using the --repository-file option. This meant it was not possible to use authentication in contexts where the repository URL is stored in publicly accessible way.

    Restic now allows setting the username and password using the RESTIC_REST_USERNAME and RESTIC_REST_PASSWORD variables.

    https://github.com/restic/restic/pull/4480

  • Enhancement #4511: Include inode numbers in JSON output for find and ls commands

    Restic used to omit the inode numbers in the JSON messages emitted for nodes by the ls command as well as for matches by the find command. It now includes those values whenever they are available.

    https://github.com/restic/restic/pull/4511

  • Enhancement #4519: Add config option to set SFTP command arguments

    When using the sftp backend, scenarios where a custom identity file was needed for the SSH connection, required the full command to be specified: -o sftp.command='ssh user@host:port -i /ssh/my_private_key -s sftp'

    Now, the -o sftp.args=... option can be passed to restic to specify custom arguments for the SSH command executed by the SFTP backend. This simplifies the above example to -o sftp.args='-i /ssh/my_private_key'.

    https://github.com/restic/restic/issues/4241 https://github.com/restic/restic/pull/4519

Changelog for restic 0.16.0 (2023-07-31)

The following sections list the changes in restic 0.16.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2565: Support "unlimited" in forget --keep-* options
  • Fix #3311: Support non-UTF8 paths as symlink target
  • Fix #4199: Avoid lock refresh issues on slow network connections
  • Fix #4274: Improve lock refresh handling after standby
  • Fix #4319: Correctly clean up status bar output of the backup command
  • Fix #4333: generate and init no longer silently ignore unexpected arguments
  • Fix #4400: Ignore missing folders in rest backend
  • Chg #4176: Fix JSON message type of scan_finished for the backup command
  • Chg #4201: Require Go 1.20 for Solaris builds
  • Enh #426: Show progress bar during restore
  • Enh #719: Add --retry-lock option
  • Enh #1495: Sort snapshots by timestamp in restic find
  • Enh #1759: Add repair index and repair snapshots commands
  • Enh #1926: Allow certificate paths to be passed through environment variables
  • Enh #2359: Provide multi-platform Docker images
  • Enh #2468: Add support for non-global Azure clouds
  • Enh #2679: Reduce file fragmentation for local backend
  • Enh #3328: Reduce memory usage by up to 25%
  • Enh #3397: Improve accuracy of ETA displayed during backup
  • Enh #3624: Keep oldest snapshot when there are not enough snapshots
  • Enh #3698: Add support for Managed / Workload Identity to azure backend
  • Enh #3871: Support <snapshot>:<subfolder> syntax to select subfolders
  • Enh #3941: Support --group-by for backup parent selection
  • Enh #4130: Cancel current command if cache becomes unusable
  • Enh #4159: Add --human-readable option to ls and find commands
  • Enh #4188: Include restic version in snapshot metadata
  • Enh #4220: Add jq binary to Docker image
  • Enh #4226: Allow specifying region of new buckets in the gs backend
  • Enh #4375: Add support for extended attributes on symlinks

Details

Changelog for restic 0.15.2 (2023-04-24)

The following sections list the changes in restic 0.15.2 relevant to restic users. The changes are ordered by importance.

Summary

  • Sec #4275: Update golang.org/x/net to address CVE-2022-41723
  • Fix #2260: Sanitize filenames printed by backup during processing
  • Fix #4211: Make dump interpret --host and --path correctly
  • Fix #4239: Correct number of blocks reported in mount point
  • Fix #4253: Minimize risk of spurious filesystem loops with mount
  • Enh #4180: Add release binaries for riscv64 architecture on Linux
  • Enh #4219: Upgrade Minio to version 7.0.49

Details

  • Security #4275: Update golang.org/x/net to address CVE-2022-41723

    https://github.com/restic/restic/issues/4275 https://github.com/restic/restic/pull/4213

  • Bugfix #2260: Sanitize filenames printed by backup during processing

    The backup command would previously not sanitize the filenames it printed during processing, potentially causing newlines or terminal control characters to mangle the status output or even change the state of a terminal.

    Filenames are now checked and quoted if they contain non-printable or non-Unicode characters.

    https://github.com/restic/restic/issues/2260 https://github.com/restic/restic/issues/4191 https://github.com/restic/restic/pull/4192

  • Bugfix #4211: Make dump interpret --host and --path correctly

    A regression in restic 0.15.0 caused dump to confuse its --host=<host> and --path=<path> options: it looked for snapshots with paths called <host> from hosts called <path>. It now treats the options as intended.

    https://github.com/restic/restic/issues/4211 https://github.com/restic/restic/pull/4212

  • Bugfix #4239: Correct number of blocks reported in mount point

    Restic mount points reported an incorrect number of 512-byte (POSIX standard) blocks for files and links due to a rounding bug. In particular, empty files were reported as taking one block instead of zero.

    The rounding is now fixed: the number of blocks reported is the file size (or link target size) divided by 512 and rounded up to a whole number.

    https://github.com/restic/restic/issues/4239 https://github.com/restic/restic/pull/4240

  • Bugfix #4253: Minimize risk of spurious filesystem loops with mount

    When a backup contains a directory that has the same name as its parent, say a/b/b, and the GNU find command was run on this backup in a restic mount, find would refuse to traverse the lowest b directory, instead printing File system loop detected. This was due to the way the restic mount command generates inode numbers for directories in the mount point.

    The rule for generating these inode numbers was changed in 0.15.0. It has now been changed again to avoid this issue. A perfect rule does not exist, but the probability of this behavior occurring is now extremely small.

    When it does occur, the mount point is not broken, and scripts that traverse the mount point should work as long as they don't rely on inode numbers for detecting filesystem loops.

    https://github.com/restic/restic/issues/4253 https://github.com/restic/restic/pull/4255

  • Enhancement #4180: Add release binaries for riscv64 architecture on Linux

    Builds for the riscv64 architecture on Linux are now included in the release binaries.

    https://github.com/restic/restic/pull/4180

  • Enhancement #4219: Upgrade Minio to version 7.0.49

    The upgraded version now allows use of the ap-southeast-4 region (Melbourne).

    https://github.com/restic/restic/pull/4219

Changelog for restic 0.15.1 (2023-01-30)

The following sections list the changes in restic 0.15.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #3750: Remove b2_download_file_by_name: 404 warning from B2 backend
  • Fix #4147: Make prune --quiet not print progress bar
  • Fix #4163: Make self-update --output work with new filename on Windows
  • Fix #4167: Add missing ETA in backup progress bar
  • Enh #4143: Ignore empty lock files

Details

  • Bugfix #3750: Remove b2_download_file_by_name: 404 warning from B2 backend

    In some cases the B2 backend could print b2_download_file_by_name: 404: : b2.b2err warnings. These are only debug messages and can be safely ignored.

    Restic now uses an updated library for accessing B2, which removes the warning.

    https://github.com/restic/restic/issues/3750 https://github.com/restic/restic/issues/4144 https://github.com/restic/restic/pull/4146

  • Bugfix #4147: Make prune --quiet not print progress bar

    A regression in restic 0.15.0 caused prune --quiet to show a progress bar while deciding how to process each pack files. This has now been fixed.

    https://github.com/restic/restic/issues/4147 https://github.com/restic/restic/pull/4153

  • Bugfix #4163: Make self-update --output work with new filename on Windows

    Since restic 0.14.0 the self-update command did not work when a custom output filename was specified via the --output option. This has now been fixed.

    As a workaround, either use an older restic version to run the self-update or create an empty file with the output filename before updating e.g. using CMD:

    type nul > new-file.exe restic self-update --output new-file.exe

    https://github.com/restic/restic/pull/4163 https://forum.restic.net/t/self-update-windows-started-failing-after-release-of-0-15/5836

  • Bugfix #4167: Add missing ETA in backup progress bar

    A regression in restic 0.15.0 caused the ETA to be missing from the progress bar displayed by the backup command. This has now been fixed.

    https://github.com/restic/restic/pull/4167

  • Enhancement #4143: Ignore empty lock files

    With restic 0.15.0 the checks for stale locks became much stricter than before. In particular, empty or unreadable locks were no longer silently ignored. This made restic to complain with Load(<lock/1234567812>, 0, 0) returned error, retrying after 552.330144ms: load(<lock/1234567812>): invalid data returned and fail in the end.

    The error message is now clarified and the implementation changed to ignore empty lock files which are sometimes created as the result of a failed uploads on some backends.

    Please note that unreadable lock files still have to cleaned up manually. To do so, you can run restic unlock --remove-all which removes all existing lock files. But first make sure that no other restic process is currently using the repository.

    https://github.com/restic/restic/issues/4143 https://github.com/restic/restic/pull/4152

Changelog for restic 0.15.0 (2023-01-12)

The following sections list the changes in restic 0.15.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2015: Make mount return exit code 0 after receiving Ctrl-C / SIGINT
  • Fix #2578: Make restore replace existing symlinks
  • Fix #2591: Don't read password from stdin for backup --stdin
  • Fix #3161: Delete files on Backblaze B2 more reliably
  • Fix #3336: Make SFTP backend report no space left on device
  • Fix #3567: Improve handling of interrupted syscalls in mount command
  • Fix #3897: Fix stuck copy command when -o <backend>.connections=1
  • Fix #3918: Correct prune statistics for partially compressed repositories
  • Fix #3951: Make ls return exit code 1 if snapshot cannot be loaded
  • Fix #4003: Make backup no longer hang on Solaris when seeing a FIFO file
  • Fix #4016: Support ExFAT-formatted local backends on macOS Ventura
  • Fix #4085: Make init ignore "Access Denied" errors when creating S3 buckets
  • Fix #4100: Make self-update enabled by default only in release builds
  • Fix #4103: Don't generate negative UIDs and GIDs in tar files from dump
  • Chg #2724: Include full snapshot ID in JSON output of backup
  • Chg #3929: Make unlock display message only when locks were actually removed
  • Chg #4033: Don't print skipped snapshots by default in copy command
  • Chg #4041: Update dependencies and require Go 1.18 or newer
  • Enh #14: Implement rewrite command
  • Enh #79: Restore files with long runs of zeros as sparse files
  • Enh #1078: Support restoring symbolic links on Windows
  • Enh #1734: Inform about successful retries after errors
  • Enh #1866: Improve handling of directories with duplicate entries
  • Enh #2134: Support B2 API keys restricted to hiding but not deleting files
  • Enh #2152: Make init open only one connection for the SFTP backend
  • Enh #2533: Handle cache corruption on disk and in downloads
  • Enh #2715: Stricter repository lock handling
  • Enh #2750: Make backup file read concurrency configurable
  • Enh #3029: Add support for credential_process to S3 backend
  • Enh #3096: Make mount command support macOS using macFUSE 4.x
  • Enh #3124: Support JSON output for the init command
  • Enh #3899: Optimize prune memory usage
  • Enh #3905: Improve speed of parent snapshot detection in backup command
  • Enh #3915: Add compression statistics to the stats command
  • Enh #3925: Provide command completion for PowerShell
  • Enh #3931: Allow backup file tree scanner to be disabled
  • Enh #3932: Improve handling of ErrDot errors in rclone and sftp backends
  • Enh #3943: Ignore additional/unknown files in repository
  • Enh #3955: Improve backup performance for small files

Details

  • Bugfix #2015: Make mount return exit code 0 after receiving Ctrl-C / SIGINT

    To stop the mount command, a user has to press Ctrl-C or send a SIGINT signal to restic. This used to cause restic to exit with a non-zero exit code.

    The exit code has now been changed to zero as the above is the expected way to stop the mount command and should therefore be considered successful.

    https://github.com/restic/restic/issues/2015 https://github.com/restic/restic/pull/3894

  • Bugfix #2578: Make restore replace existing symlinks

    When restoring a symlink, restic used to report an error if the target path already existed. This has now been fixed such that the potentially existing target path is first removed before the symlink is restored.

    https://github.com/restic/restic/issues/2578 https://github.com/restic/restic/pull/3780

  • Bugfix #2591: Don't read password from stdin for backup --stdin

    The backup command when used with --stdin previously tried to read first the password, then the data to be backed up from standard input. This meant it would often confuse part of the data for the password.

    From now on, it will instead exit with the message Fatal: cannot read both password and data from stdin unless the password is passed in some other way (such as --restic-password-file, RESTIC_PASSWORD, etc).

    To enter the password interactively a password command has to be used. For example on Linux, mysqldump somedatabase | restic backup --stdin --password-command='sh -c "systemd-ask-password < /dev/tty"' securely reads the password from the terminal.

    https://github.com/restic/restic/issues/2591 https://github.com/restic/restic/pull/4011

  • Bugfix #3161: Delete files on Backblaze B2 more reliably

    Restic used to only delete the latest version of files stored in B2. In most cases this worked well as there was only a single version of the file. However, due to retries while uploading it is possible for multiple file versions to be stored at B2. This could lead to various problems for files that should have been deleted but still existed.

    The implementation has now been changed to delete all versions of files, which doubles the amount of Class B transactions necessary to delete files, but assures that no file versions are left behind.

    https://github.com/restic/restic/issues/3161 https://github.com/restic/restic/pull/3885

  • Bugfix #3336: Make SFTP backend report no space left on device

    Backing up to an SFTP backend would spew repeated SSH_FX_FAILURE messages when the remote disk was full. Restic now reports "sftp: no space left on device" and exits immediately when it detects this condition.

    A fix for this issue was implemented in restic 0.12.1, but unfortunately the fix itself contained a bug that prevented it from taking effect.

    https://github.com/restic/restic/issues/3336 https://github.com/restic/restic/pull/3345 https://github.com/restic/restic/pull/4075

  • Bugfix #3567: Improve handling of interrupted syscalls in mount command

    Accessing restic's FUSE mount could result in "input/output" errors when using programs in which syscalls can be interrupted. This is for example the case for Go programs. This has now been fixed by improved error handling of interrupted syscalls.

    https://github.com/restic/restic/issues/3567 https://github.com/restic/restic/issues/3694 https://github.com/restic/restic/pull/3875

  • Bugfix #3897: Fix stuck copy command when -o <backend>.connections=1

    When running the copy command with -o <backend>.connections=1 the command would be infinitely stuck. This has now been fixed.

    https://github.com/restic/restic/issues/3897 https://github.com/restic/restic/pull/3898

  • Bugfix #3918: Correct prune statistics for partially compressed repositories

    In a partially compressed repository, one data blob can exist both in an uncompressed and a compressed version. This caused the prune statistics to become inaccurate and e.g. report a too high value for the unused size, such as "unused size after prune: 16777215.991 TiB". This has now been fixed.

    https://github.com/restic/restic/issues/3918 https://github.com/restic/restic/pull/3980

  • Bugfix #3951: Make ls return exit code 1 if snapshot cannot be loaded

    The ls command used to show a warning and return exit code 0 when failing to load a snapshot. This has now been fixed such that it instead returns exit code 1 (still showing a warning).

    https://github.com/restic/restic/pull/3951

  • Bugfix #4003: Make backup no longer hang on Solaris when seeing a FIFO file

    The backup command used to hang on Solaris whenever it encountered a FIFO file (named pipe), due to a bug in the handling of extended attributes. This bug has now been fixed.

    https://github.com/restic/restic/issues/4003 https://github.com/restic/restic/pull/4053

  • Bugfix #4016: Support ExFAT-formatted local backends on macOS Ventura

    ExFAT-formatted disks could not be used as local backends starting from macOS Ventura. Restic commands would fail with an "inappropriate ioctl for device" error. This has now been fixed.

    https://github.com/restic/restic/issues/4016 https://github.com/restic/restic/pull/4021

  • Bugfix #4085: Make init ignore "Access Denied" errors when creating S3 buckets

    In restic 0.9.0 through 0.13.0, the init command ignored some permission errors from S3 backends when trying to check for bucket existence, so that manually created buckets with custom permissions could be used for backups.

    This feature became broken in 0.14.0, but has now been restored again.

    https://github.com/restic/restic/issues/4085 https://github.com/restic/restic/pull/4086

  • Bugfix #4100: Make self-update enabled by default only in release builds

    The self-update command was previously included by default in all builds of restic as opposed to only in official release builds, even if the selfupdate tag was not explicitly enabled when building.

    This has now been corrected, and the self-update command is only available if restic was built with -tags selfupdate (as done for official release builds by build.go).

    https://github.com/restic/restic/pull/4100

  • Bugfix #4103: Don't generate negative UIDs and GIDs in tar files from dump

    When using a 32-bit build of restic, the dump command could in some cases create tar files containing negative UIDs and GIDs, which cannot be read by GNU tar. This corner case especially applies to backups from stdin on Windows.

    This is now fixed such that dump creates valid tar files in these cases too.

    https://github.com/restic/restic/issues/4103 https://github.com/restic/restic/pull/4104

  • Change #2724: Include full snapshot ID in JSON output of backup

    We have changed the JSON output of the backup command to include the full snapshot ID instead of just a shortened version, as the latter can be ambiguous in some rare cases. To derive the short ID, please truncate the full ID down to eight characters.

    https://github.com/restic/restic/issues/2724 https://github.com/restic/restic/pull/3993

  • Change #3929: Make unlock display message only when locks were actually removed

    The unlock command used to print the "successfully removed locks" message whenever it was run, regardless of lock files having being removed or not.

    This has now been changed such that it only prints the message if any lock files were actually removed. In addition, it also reports the number of removed lock files.

    https://github.com/restic/restic/issues/3929 https://github.com/restic/restic/pull/3935

  • Change #4033: Don't print skipped snapshots by default in copy command

    The copy command used to print each snapshot that was skipped because it already existed in the target repository. The amount of this output could practically bury the list of snapshots that were actually copied.

    From now on, the skipped snapshots are by default not printed at all, but this can be re-enabled by increasing the verbosity level of the command.

    https://github.com/restic/restic/issues/4033 https://github.com/restic/restic/pull/4066

  • Change #4041: Update dependencies and require Go 1.18 or newer

    Most dependencies have been updated. Since some libraries require newer language features, support for Go 1.15-1.17 has been dropped, which means that restic now requires at least Go 1.18 to build.

    https://github.com/restic/restic/pull/4041

  • Enhancement #14: Implement rewrite command

    Restic now has a rewrite command which allows to rewrite existing snapshots to remove unwanted files.

    https://github.com/restic/restic/issues/14 https://github.com/restic/restic/pull/2731 https://github.com/restic/restic/pull/4079

  • Enhancement #79: Restore files with long runs of zeros as sparse files

    When using restore --sparse, the restorer may now write files containing long runs of zeros as sparse files (also called files with holes), where the zeros are not actually written to disk.

    How much space is saved by writing sparse files depends on the operating system, file system and the distribution of zeros in the file.

    During backup restic still reads the whole file including sparse regions, but with optimized processing speed of sparse regions.

    https://github.com/restic/restic/issues/79 https://github.com/restic/restic/issues/3903 https://github.com/restic/restic/pull/2601 https://github.com/restic/restic/pull/3854 https://forum.restic.net/t/sparse-file-support/1264

  • Enhancement #1078: Support restoring symbolic links on Windows

    The restore command now supports restoring symbolic links on Windows. Because of Windows specific restrictions this is only possible when running restic with the SeCreateSymbolicLinkPrivilege privilege or as an administrator.

    https://github.com/restic/restic/issues/1078 https://github.com/restic/restic/issues/2699 https://github.com/restic/restic/pull/2875

  • Enhancement #1734: Inform about successful retries after errors

    When a recoverable error is encountered, restic shows a warning message saying that it's retrying, e.g.:

    Save(<data/956b9ced99>) returned error, retrying after 357.131936ms: ...

    This message can be confusing in that it never clearly states whether the retry is successful or not. This has now been fixed such that restic follows up with a message confirming a successful retry, e.g.:

    Save(<data/956b9ced99>) operation successful after 1 retries

    https://github.com/restic/restic/issues/1734 https://github.com/restic/restic/pull/2661

  • Enhancement #1866: Improve handling of directories with duplicate entries

    If for some reason a directory contains a duplicate entry, the backup command would previously fail with a node "path/to/file" already present or nodes are not ordered got "path/to/file", last "path/to/file" error.

    The error handling has been improved to only report a warning in this case. Make sure to check that the filesystem in question is not damaged if you see this!

    https://github.com/restic/restic/issues/1866 https://github.com/restic/restic/issues/3937 https://github.com/restic/restic/pull/3880

  • Enhancement #2134: Support B2 API keys restricted to hiding but not deleting files

    When the B2 backend does not have the necessary permissions to permanently delete files, it now automatically falls back to hiding files. This allows using restic with an application key which is not allowed to delete files. This can prevent an attacker from deleting backups with such an API key.

    To use this feature create an application key without the deleteFiles capability. It is recommended to restrict the key to just one bucket. For example using the b2 command line tool:

    b2 create-key --bucket <bucketName> <keyName> listBuckets,readFiles,writeFiles,listFiles

    Alternatively, you can use the S3 backend to access B2, as described in the documentation. In this mode, files are also only hidden instead of being deleted permanently.

    https://github.com/restic/restic/issues/2134 https://github.com/restic/restic/pull/2398

  • Enhancement #2152: Make init open only one connection for the SFTP backend

    The init command using the SFTP backend used to connect twice to the repository. This could be inconvenient if the user must enter a password, or cause init to fail if the server does not correctly close the first SFTP connection.

    This has now been fixed by reusing the first/initial SFTP connection opened.

    https://github.com/restic/restic/issues/2152 https://github.com/restic/restic/pull/3882

  • Enhancement #2533: Handle cache corruption on disk and in downloads

    In rare situations, like for example after a system crash, the data stored in the cache might be corrupted. This could cause restic to fail and required manually deleting the cache.

    Restic now automatically removes broken data from the cache, allowing it to recover from such a situation without user intervention. In addition, restic retries downloads which return corrupt data in order to also handle temporary download problems.

    https://github.com/restic/restic/issues/2533 https://github.com/restic/restic/pull/3521

  • Enhancement #2715: Stricter repository lock handling

    Previously, restic commands kept running even if they failed to refresh their locks in time. This could be a problem e.g. in case the client system running a backup entered the standby power mode while the backup was still in progress (which would prevent the client from refreshing its lock), and after a short delay another host successfully runs unlock and prune on the repository, which would remove all data added by the in-progress backup. If the backup client later continues its backup, even though its lock had expired in the meantime, this would lead to an incomplete snapshot.

    To address this, lock handling is now much stricter. Commands requiring a lock are canceled if the lock is not refreshed successfully in time. In addition, if a lock file is not readable restic will not allow starting a command. It may be necessary to remove invalid lock files manually or use unlock --remove-all. Please make sure that no other restic processes are running concurrently before doing this, however.

    https://github.com/restic/restic/issues/2715 https://github.com/restic/restic/pull/3569

  • Enhancement #2750: Make backup file read concurrency configurable

    The backup command now supports a --read-concurrency option which allows tuning restic for very fast storage like NVMe disks by controlling the number of concurrent file reads during the backup process.

    https://github.com/restic/restic/pull/2750

  • Enhancement #3029: Add support for credential_process to S3 backend

    Restic now uses a newer library for the S3 backend, which adds support for the credential_process option in the AWS credential configuration.

    https://github.com/restic/restic/issues/3029 https://github.com/restic/restic/issues/4034 https://github.com/restic/restic/pull/4025

  • Enhancement #3096: Make mount command support macOS using macFUSE 4.x

    Restic now uses a different FUSE library for mounting snapshots and making them available as a FUSE filesystem using the mount command. This adds support for macFUSE 4.x which can be used to make this work on recent macOS versions.

    https://github.com/restic/restic/issues/3096 https://github.com/restic/restic/pull/4024

  • Enhancement #3124: Support JSON output for the init command

    The init command used to ignore the --json option, but now outputs a JSON message if the repository was created successfully.

    https://github.com/restic/restic/issues/3124 https://github.com/restic/restic/pull/3132

  • Enhancement #3899: Optimize prune memory usage

    The prune command needs large amounts of memory in order to determine what to keep and what to remove. This is now optimized to use up to 30% less memory.

    https://github.com/restic/restic/pull/3899

  • Enhancement #3905: Improve speed of parent snapshot detection in backup command

    Backing up a large number of files using --files-from-verbatim or --files-from-raw options could require a long time to find the parent snapshot. This has been improved.

    https://github.com/restic/restic/pull/3905

  • Enhancement #3915: Add compression statistics to the stats command

    When executed with --mode raw-data on a repository that supports compression, the stats command now calculates and displays, for the selected repository or snapshots: the uncompressed size of the data; the compression progress (percentage of data that has been compressed); the compression ratio of the compressed data; the total space saving.

    It also takes into account both the compressed and uncompressed data if the repository is only partially compressed.

    https://github.com/restic/restic/pull/3915

  • Enhancement #3925: Provide command completion for PowerShell

    Restic already provided generation of completion files for bash, fish and zsh. Now powershell is supported, too.

    https://github.com/restic/restic/pull/3925/files

  • Enhancement #3931: Allow backup file tree scanner to be disabled

    The backup command walks the file tree in a separate scanner process to find the total size and file/directory count, and uses this to provide an ETA. This can slow down backups, especially of network filesystems.

    The command now has a new option --no-scan which can be used to disable this scanning in order to speed up backups when needed.

    https://github.com/restic/restic/pull/3931

  • Enhancement #3932: Improve handling of ErrDot errors in rclone and sftp backends

    Since Go 1.19, restic can no longer implicitly run relative executables which are found in the current directory (e.g. rclone if found in .). This is a security feature of Go to prevent against running unintended and possibly harmful executables.

    The error message for this was just "cannot run executable found relative to current directory". This has now been improved to yield a more specific error message, informing the user how to explicitly allow running the executable using the -o rclone.program and -o sftp.command extended options with ./.

    https://github.com/restic/restic/issues/3932 https://pkg.go.dev/os/exec#hdr-Executables_in_the_current_directory https://go.dev/blog/path-security

  • Enhancement #3943: Ignore additional/unknown files in repository

    If a restic repository had additional files in it (not created by restic), commands like find and restore could become confused and fail with an multiple IDs with prefix "12345678" found error. These commands now ignore such additional files.

    https://github.com/restic/restic/pull/3943 https://forum.restic.net/t/which-protocol-should-i-choose-for-remote-linux-backups/5446/17

  • Enhancement #3955: Improve backup performance for small files

    When backing up small files restic was slower than it could be. In particular this affected backups using maximum compression.

    This has been fixed by reworking the internal parallelism of the backup command, making it back up small files around two times faster.

    https://github.com/restic/restic/pull/3955

Changelog for restic 0.14.0 (2022-08-25)

The following sections list the changes in restic 0.14.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2248: Support self-update on Windows
  • Fix #3428: List snapshots in backend at most once to resolve snapshot IDs
  • Fix #3432: Fix rare 'not found in repository' error for copy command
  • Fix #3681: Fix rclone (shimmed by Scoop) and sftp not working on Windows
  • Fix #3685: The diff command incorrectly listed some files as added
  • Fix #3716: Print "wrong password" to stderr instead of stdout
  • Fix #3720: Directory sync errors for repositories accessed via SMB
  • Fix #3736: The stats command miscalculated restore size for multiple snapshots
  • Fix #3772: Correctly rebuild index for legacy repositories
  • Fix #3776: Limit number of key files tested while opening a repository
  • Fix #3861: Yield error on invalid policy to forget
  • Chg #1842: Support debug log creation in release builds
  • Chg #3295: Deprecate check --check-unused and add further checks
  • Chg #3680: Update dependencies and require Go 1.15 or newer
  • Chg #3742: Replace --repo2 option used by init/copy with --from-repo
  • Enh #21: Add compression support
  • Enh #1153: Support pruning even when the disk is full
  • Enh #2162: Adaptive IO concurrency based on backend connections
  • Enh #2291: Allow pack size customization
  • Enh #2295: Allow use of SAS token to authenticate to Azure
  • Enh #2351: Use config file permissions to control file group access
  • Enh #2696: Improve backup speed with many small files
  • Enh #2907: Make snapshot directory structure of mount command customizable
  • Enh #2923: Improve speed of copy command
  • Enh #3114: Optimize handling of duplicate blobs in prune
  • Enh #3465: Improve handling of temporary files on Windows
  • Enh #3475: Allow limiting IO concurrency for local and SFTP backend
  • Enh #3484: Stream data in check and prune commands
  • Enh #3709: Validate exclude patterns before backing up
  • Enh #3729: Display full IDs in check warnings
  • Enh #3773: Optimize memory usage for directories with many files
  • Enh #3819: Validate include/exclude patterns before restoring
  • Enh #3837: Improve SFTP repository initialization over slow links

Details

  • Bugfix #2248: Support self-update on Windows

    Restic self-update would fail in situations where the operating system locks running binaries, including Windows. The new behavior works around this by renaming the running file and swapping the updated file in place.

    https://github.com/restic/restic/issues/2248 https://github.com/restic/restic/pull/3675

  • Bugfix #3428: List snapshots in backend at most once to resolve snapshot IDs

    Many commands support specifying a list of snapshot IDs which are then used to determine the snapshots to be processed by the command. To resolve snapshot IDs or latest, and check that these exist, restic previously listed all snapshots stored in the repository. Depending on the backend this could be a slow and/or expensive operation.

    Restic now lists the snapshots only once and remembers the result in order to resolve all further snapshot IDs swiftly.

    https://github.com/restic/restic/issues/3428 https://github.com/restic/restic/pull/3570 https://github.com/restic/restic/pull/3395

  • Bugfix #3432: Fix rare 'not found in repository' error for copy command

    In rare cases copy (and other commands) would report that LoadTree(...) returned an id [...] not found in repository error. This could be caused by a backup or copy command running concurrently. The error was only temporary; running the failed restic command a second time as a workaround did resolve the error.

    This issue has now been fixed by correcting the order in which restic reads data from the repository. It is now guaranteed that restic only loads snapshots for which all necessary data is already available.

    https://github.com/restic/restic/issues/3432 https://github.com/restic/restic/pull/3570

  • Bugfix #3681: Fix rclone (shimmed by Scoop) and sftp not working on Windows

    In #3602 a fix was introduced to address the problem of rclone prematurely exiting when Ctrl+C is pressed on Windows. The solution was to create the subprocess with its console detached from the restic console.

    However, this solution failed when using rclone installed by Scoop or using sftp with a passphrase-protected private key. We've now fixed this by using a different approach to prevent Ctrl-C from passing down too early.

    https://github.com/restic/restic/issues/3681 https://github.com/restic/restic/issues/3692 https://github.com/restic/restic/pull/3696

  • Bugfix #3685: The diff command incorrectly listed some files as added

    There was a bug in the diff command, causing it to always show files in a removed directory as added. This has now been fixed.

    https://github.com/restic/restic/issues/3685 https://github.com/restic/restic/pull/3686

  • Bugfix #3716: Print "wrong password" to stderr instead of stdout

    If an invalid password was entered, the error message was printed on stdout and not on stderr as intended. This has now been fixed.

    https://github.com/restic/restic/pull/3716 https://forum.restic.net/t/4965

  • Bugfix #3720: Directory sync errors for repositories accessed via SMB

    On Linux and macOS, accessing a repository via a SMB/CIFS mount resulted in restic failing to save the lock file, yielding the following errors:

    Save(<lock/071fe833f0>) returned error, retrying after 552.330144ms: sync /repo/locks: no such file or directory Save(<lock/bf789d7343>) returned error, retrying after 552.330144ms: sync /repo/locks: invalid argument

    This has now been fixed by ignoring the relevant error codes.

    https://github.com/restic/restic/issues/3720 https://github.com/restic/restic/issues/3751 https://github.com/restic/restic/pull/3752

  • Bugfix #3736: The stats command miscalculated restore size for multiple snapshots

    Since restic 0.10.0 the restore size calculated by the stats command for multiple snapshots was too low. The hardlink detection was accidentally applied across multiple snapshots and thus ignored many files. This has now been fixed.

    https://github.com/restic/restic/issues/3736 https://github.com/restic/restic/pull/3740

  • Bugfix #3772: Correctly rebuild index for legacy repositories

    After running rebuild-index on a legacy repository containing mixed pack files (that is, pack files which store both metadata and file data), check printed warnings like pack 12345678 contained in several indexes: .... This warning was not critical, but has now nonetheless been fixed by properly handling mixed pack files while rebuilding the index.

    Running prune for such legacy repositories will also fix the warning by reorganizing the pack files which caused it.

    https://github.com/restic/restic/pull/3772 https://github.com/restic/restic/pull/3884 https://forum.restic.net/t/5044/13

  • Bugfix #3776: Limit number of key files tested while opening a repository

    Previously, restic tested the password against every key in the repository when opening a repository. The more keys there were in the repository, the slower this operation became.

    Restic now tests the password against up to 20 key files in the repository. Alternatively, you can use the --key-hint=<key ID> option to specify a specific key file to use instead.

    https://github.com/restic/restic/pull/3776

  • Bugfix #3861: Yield error on invalid policy to forget

    The forget command previously silently ignored invalid/unsupported units in the duration options, such as e.g. --keep-within-daily 2w.

    Specifying an invalid/unsupported duration unit now results in an error.

    https://github.com/restic/restic/issues/3861 https://github.com/restic/restic/pull/3862

  • Change #1842: Support debug log creation in release builds

    Creating a debug log was only possible in debug builds which required users to manually build restic. We changed the release builds to allow creating debug logs by simply setting the environment variable DEBUG_LOG=logname.log.

    https://github.com/restic/restic/issues/1842 https://github.com/restic/restic/pull/3826

  • Change #3295: Deprecate check --check-unused and add further checks

    Since restic 0.12.0, it is expected to still have unused blobs after running prune. This made the --check-unused option of the check command rather useless and tended to confuse users. This option has been deprecated and is now ignored.

    The check command now also warns if a repository is using either the legacy S3 layout or mixed pack files with both tree and data blobs. The latter is known to cause performance problems.

    https://github.com/restic/restic/issues/3295 https://github.com/restic/restic/pull/3730

  • Change #3680: Update dependencies and require Go 1.15 or newer

    We've updated most dependencies. Since some libraries require newer language features we're dropping support for Go 1.14, which means that restic now requires at least Go 1.15 to build.

    https://github.com/restic/restic/issues/3680 https://github.com/restic/restic/issues/3883

  • Change #3742: Replace --repo2 option used by init/copy with --from-repo

    The init and copy commands can read data from another repository. However, confusingly --repo2 referred to the repository from which the init command copies parameters, but for the copy command --repo2 referred to the copy destination.

    We've introduced a new option, --from-repo, which always refers to the source repository for both commands. The old parameter names have been deprecated but still work. To create a new repository and copy all snapshots to it, the commands are now as follows:

    --copy-chunker-params restic -r /srv/restic-repo-copy copy --from-repo
/srv/restic-repo ```

https://github.com/restic/restic/pull/3742
https://forum.restic.net/t/5017

  • Enhancement #21: Add compression support

    We've added compression support to the restic repository format. To create a repository using the new format run init --repository-version 2. Please note that the repository cannot be read by restic versions prior to 0.14.0.

    You can configure whether data is compressed with the option --compression. It can be set to auto (the default, which will compress very fast), max (which will trade backup speed and CPU usage for better compression), or off (which disables compression). Each setting is only applied for the current run of restic and does not apply to future runs. The option can also be set via the environment variable RESTIC_COMPRESSION.

    To upgrade in place run migrate upgrade_repo_v2 followed by prune. See the documentation for more details. The migration checks the repository integrity and upgrades the repository format, but will not change any data. Afterwards, prune will rewrite the metadata to make use of compression.

    As an alternative you can use the copy command to migrate snapshots; First create a new repository using init --repository-version 2 --copy-chunker-params --repo2 path/to/old/repo, and then use the copy command to copy all snapshots to the new repository.

    https://github.com/restic/restic/issues/21 https://github.com/restic/restic/issues/3779 https://github.com/restic/restic/pull/3666 https://github.com/restic/restic/pull/3704 https://github.com/restic/restic/pull/3733

  • Enhancement #1153: Support pruning even when the disk is full

    When running out of disk space it was no longer possible to add or remove data from a repository. To help with recovering from such a deadlock, the prune command now supports an --unsafe-recover-no-free-space option to recover from these situations. Make sure to read the documentation first!

    https://github.com/restic/restic/issues/1153 https://github.com/restic/restic/pull/3481

  • Enhancement #2162: Adaptive IO concurrency based on backend connections

    Many commands used hard-coded limits for the number of concurrent operations. This prevented speed improvements by increasing the number of connections used by a backend.

    These limits have now been replaced by using the configured number of backend connections instead, which can be controlled using the -o <backend-name>.connections=5 option. Commands will then automatically scale their parallelism accordingly.

    To limit the number of CPU cores used by restic, you can set the environment variable GOMAXPROCS accordingly. For example to use a single CPU core, use GOMAXPROCS=1.

    https://github.com/restic/restic/issues/2162 https://github.com/restic/restic/issues/1467 https://github.com/restic/restic/pull/3611

  • Enhancement #2291: Allow pack size customization

    Restic now uses a target pack size of 16 MiB by default. This can be customized using the --pack-size size option. Supported pack sizes range between 4 and 128 MiB.

    It is possible to migrate an existing repository to larger pack files using prune --repack-small. This will rewrite every pack file which is significantly smaller than the target size.

    https://github.com/restic/restic/issues/2291 https://github.com/restic/restic/pull/3731

  • Enhancement #2295: Allow use of SAS token to authenticate to Azure

    Previously restic only supported AccountKeys to authenticate to Azure storage accounts, which necessitates giving a significant amount of access.

    We added support for Azure SAS tokens which are a more fine-grained and time-limited manner of granting access. Set the AZURE_ACCOUNT_NAME and AZURE_ACCOUNT_SAS environment variables to use a SAS token for authentication. Note that if AZURE_ACCOUNT_KEY is set, it will take precedence.

    https://github.com/restic/restic/issues/2295 https://github.com/restic/restic/pull/3661

  • Enhancement #2351: Use config file permissions to control file group access

    Previously files in a local/SFTP repository would always end up with very restrictive access permissions, allowing access only to the owner. This prevented a number of valid use-cases involving groups and ACLs.

    We now use the permissions of the config file in the repository to decide whether group access should be given to newly created repository files or not. We arrange for repository files to be created group readable exactly when the repository config file is group readable.

    To opt-in to group readable repositories, a simple chmod -R g+r or equivalent on the config file can be used. For repositories that should be writable by group members a tad more setup is required, see the docs.

    Posix ACLs can also be used now that the group permissions being forced to zero no longer masks the effect of ACL entries.

    https://github.com/restic/restic/issues/2351 https://github.com/restic/restic/pull/3419 https://forum.restic.net/t/1391

  • Enhancement #2696: Improve backup speed with many small files

    We have restructured the backup pipeline to continue reading files while all upload connections are busy. This allows the backup to already prepare the next data file such that the upload can continue as soon as a connection becomes available. This can especially improve the backup performance for high latency backends.

    The upload concurrency is now controlled using the -o <backend-name>.connections=5 option.

    https://github.com/restic/restic/issues/2696 https://github.com/restic/restic/pull/3489

  • Enhancement #2907: Make snapshot directory structure of mount command customizable

    We've added the possibility to customize the snapshot directory structure of the mount command using templates passed to the --snapshot-template option. The formatting of snapshots' timestamps is now controlled using --time-template and supports subdirectories to for example group snapshots by year. Please see restic help mount for further details.

    Characters in tag names which are not allowed in a filename are replaced by underscores _. For example a tag foo/bar will result in a directory name of foo_bar.

    https://github.com/restic/restic/issues/2907 https://github.com/restic/restic/pull/2913 https://github.com/restic/restic/pull/3691

  • Enhancement #2923: Improve speed of copy command

    The copy command could require a long time to copy snapshots for non-local backends. This has been improved to provide a throughput comparable to the restore command.

    Additionally, copy now displays a progress bar.

    https://github.com/restic/restic/issues/2923 https://github.com/restic/restic/pull/3513

  • Enhancement #3114: Optimize handling of duplicate blobs in prune

    Restic prune always used to repack all data files containing duplicate blobs. This effectively removed all duplicates during prune. However, as a consequence all these data files were repacked even if the unused repository space threshold could be reached with less work.

    This is now changed and prune works nice and fast even when there are lots of duplicate blobs.

    https://github.com/restic/restic/issues/3114 https://github.com/restic/restic/pull/3290

  • Enhancement #3465: Improve handling of temporary files on Windows

    In some cases restic failed to delete temporary files, causing the current command to fail. This has now been fixed by ensuring that Windows automatically deletes the file. In addition, temporary files are only written to disk when necessary, reducing disk writes.

    https://github.com/restic/restic/issues/3465 https://github.com/restic/restic/issues/1551 https://github.com/restic/restic/pull/3610

  • Enhancement #3475: Allow limiting IO concurrency for local and SFTP backend

    Restic did not support limiting the IO concurrency / number of connections for accessing repositories stored using the local or SFTP backends. The number of connections is now limited as for other backends, and can be configured via the -o local.connections=2 and -o sftp.connections=5 options. This ensures that restic does not overwhelm the backend with concurrent IO operations.

    https://github.com/restic/restic/pull/3475

  • Enhancement #3484: Stream data in check and prune commands

    The commands check --read-data and prune previously downloaded data files into temporary files which could end up being written to disk. This could cause a large amount of data being written to disk.

    The pack files are now instead streamed, which removes the need for temporary files. Please note that uploads during backup and prune still require temporary files.

    https://github.com/restic/restic/issues/3710 https://github.com/restic/restic/pull/3484 https://github.com/restic/restic/pull/3717

  • Enhancement #3709: Validate exclude patterns before backing up

    Exclude patterns provided via --exclude, --iexclude, --exclude-file or --iexclude-file previously weren't validated. As a consequence, invalid patterns resulted in files that were meant to be excluded being backed up.

    Restic now validates all patterns before running the backup and aborts with a fatal error if an invalid pattern is detected.

    https://github.com/restic/restic/issues/3709 https://github.com/restic/restic/pull/3734

  • Enhancement #3729: Display full IDs in check warnings

    When running commands to inspect or repair a damaged repository, it is often necessary to supply the full IDs of objects stored in the repository.

    The output of check now includes full IDs instead of their shortened variant.

    https://github.com/restic/restic/pull/3729

  • Enhancement #3773: Optimize memory usage for directories with many files

    Backing up a directory with hundreds of thousands or more files caused restic to require large amounts of memory. We've now optimized the backup command such that it requires up to 30% less memory.

    https://github.com/restic/restic/pull/3773

  • Enhancement #3819: Validate include/exclude patterns before restoring

    Patterns provided to restore via --exclude, --iexclude, --include and --iinclude weren't validated before running the restore. Invalid patterns would result in error messages being printed repeatedly, and possibly unwanted files being restored.

    Restic now validates all patterns before running the restore, and aborts with a fatal error if an invalid pattern is detected.

    https://github.com/restic/restic/pull/3819

  • Enhancement #3837: Improve SFTP repository initialization over slow links

    The init command, when used on an SFTP backend, now sends multiple mkdir commands to the backend concurrently. This reduces the waiting times when creating a repository over a very slow connection.

    https://github.com/restic/restic/issues/3837 https://github.com/restic/restic/pull/3840

Changelog for restic 0.13.0 (2022-03-26)

The following sections list the changes in restic 0.13.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1106: Never lock repository for list locks
  • Fix #2345: Make cache crash-resistant and usable by multiple concurrent processes
  • Fix #2452: Improve error handling of repository locking
  • Fix #2738: Don't print progress for backup --json --quiet
  • Fix #3382: Make check command honor RESTIC_CACHE_DIR environment variable
  • Fix #3488: rebuild-index failed if an index file was damaged
  • Fix #3518: Make copy command honor --no-lock for source repository
  • Fix #3556: Fix hang with Backblaze B2 on SSL certificate authority error
  • Fix #3591: Fix handling of prune --max-repack-size=0
  • Fix #3601: Fix rclone backend prematurely exiting when receiving SIGINT on Windows
  • Fix #3619: Avoid choosing parent snapshots newer than time of new snapshot
  • Fix #3667: The mount command now reports symlinks sizes
  • Chg #3519: Require Go 1.14 or newer
  • Chg #3641: Ignore parent snapshot for backup --stdin
  • Enh #233: Support negative include/exclude patterns
  • Enh #1542: Add --dry-run/-n option to backup command
  • Enh #2202: Add upload checksum for Azure, GS, S3 and Swift backends
  • Enh #2388: Add warning for S3 if partial credentials are provided
  • Enh #2508: Support JSON output and quiet mode for the diff command
  • Enh #2594: Speed up the restore --verify command
  • Enh #2656: Add flag to disable TLS verification for self-signed certificates
  • Enh #2816: The backup command no longer updates file access times on Linux
  • Enh #2880: Make recover collect only unreferenced trees
  • Enh #3003: Atomic uploads for the SFTP backend
  • Enh #3127: Add xattr (extended attributes) support for Solaris
  • Enh #3429: Verify that new or modified keys are stored correctly
  • Enh #3436: Improve local backend's resilience to (system) crashes
  • Enh #3464: Skip lock creation on forget if --no-lock and --dry-run
  • Enh #3490: Support random subset by size in check --read-data-subset
  • Enh #3508: Cache blobs read by the dump command
  • Enh #3511: Support configurable timeout for the rclone backend
  • Enh #3541: Improve handling of temporary B2 delete errors
  • Enh #3542: Add file mode in symbolic notation to ls --json
  • Enh #3593: Improve copy performance by parallelizing IO

Details

  • Bugfix #1106: Never lock repository for list locks

    The list locks command previously locked to the repository by default. This had the problem that it wouldn't work for an exclusively locked repository and that the command would also display its own lock file which can be confusing.

    Now, the list locks command never locks the repository.

    https://github.com/restic/restic/issues/1106 https://github.com/restic/restic/pull/3665

  • Bugfix #2345: Make cache crash-resistant and usable by multiple concurrent processes

    The restic cache directory (RESTIC_CACHE_DIR) could end up in a broken state in the event of restic (or the OS) crashing. This is now less likely to occur as files are downloaded to a temporary location before being moved to their proper location.

    This also allows multiple concurrent restic processes to operate on a single repository without conflicts. Previously, concurrent operations could cause segfaults because the processes saw each other's partially downloaded files.

    https://github.com/restic/restic/issues/2345 https://github.com/restic/restic/pull/2838

  • Bugfix #2452: Improve error handling of repository locking

    Previously, when the lock refresh failed to delete the old lock file, it forgot about the newly created one. Instead it continued trying to delete the old (usually no longer existing) lock file and thus over time lots of lock files accumulated. This has now been fixed.

    https://github.com/restic/restic/issues/2452 https://github.com/restic/restic/issues/2473 https://github.com/restic/restic/issues/2562 https://github.com/restic/restic/pull/3512

  • Bugfix #2738: Don't print progress for backup --json --quiet

    Unlike the text output, the --json output format still printed progress information even in --quiet mode. This has now been fixed by always disabling the progress output in quiet mode.

    https://github.com/restic/restic/issues/2738 https://github.com/restic/restic/pull/3264

  • Bugfix #3382: Make check command honor RESTIC_CACHE_DIR environment variable

    Previously, the check command didn't honor the RESTIC_CACHE_DIR environment variable, which caused problems in certain system/usage configurations. This has now been fixed.

    https://github.com/restic/restic/issues/3382 https://github.com/restic/restic/pull/3474

  • Bugfix #3488: rebuild-index failed if an index file was damaged

    Previously, the rebuild-index command would fail with an error if an index file was damaged or truncated. This has now been fixed.

    On older restic versions, a (slow) workaround is to use rebuild-index --read-all-packs or to manually delete the damaged index.

    https://github.com/restic/restic/pull/3488

  • Bugfix #3518: Make copy command honor --no-lock for source repository

    The copy command previously did not respect the --no-lock option for the source repository, causing failures with read-only storage backends. This has now been fixed such that the option is now respected.

    https://github.com/restic/restic/issues/3518 https://github.com/restic/restic/pull/3589

  • Bugfix #3556: Fix hang with Backblaze B2 on SSL certificate authority error

    Previously, if a request failed with an SSL unknown certificate authority error, the B2 backend retried indefinitely and restic would appear to hang.

    This has now been fixed and restic instead fails with an error message.

    https://github.com/restic/restic/issues/3556 https://github.com/restic/restic/issues/2355 https://github.com/restic/restic/pull/3571

  • Bugfix #3591: Fix handling of prune --max-repack-size=0

    Restic ignored the --max-repack-size option when passing a value of 0. This has now been fixed.

    As a workaround, --max-repack-size=1 can be used with older versions of restic.

    https://github.com/restic/restic/pull/3591

  • Bugfix #3601: Fix rclone backend prematurely exiting when receiving SIGINT on Windows

    Previously, pressing Ctrl+C in a Windows console where restic was running with rclone as the backend would cause rclone to exit prematurely due to getting a SIGINT signal at the same time as restic. Restic would then wait for a long time for time with "unexpected EOF" and "rclone stdio connection already closed" errors.

    This has now been fixed by restic starting the rclone process detached from the console restic runs in (similar to starting processes in a new process group on Linux), which enables restic to gracefully clean up rclone (which now never gets the SIGINT).

    https://github.com/restic/restic/issues/3601 https://github.com/restic/restic/pull/3602

  • Bugfix #3619: Avoid choosing parent snapshots newer than time of new snapshot

    The backup command, when a --parent was not provided, previously chose the most recent matching snapshot as the parent snapshot. However, this didn't make sense when the user passed --time to create a new snapshot older than the most recent snapshot.

    Instead, backup now chooses the most recent snapshot which is not newer than the snapshot-being-created's timestamp, to avoid any time travel.

    https://github.com/restic/restic/pull/3619

  • Bugfix #3667: The mount command now reports symlinks sizes

    Symlinks used to have size zero in restic mountpoints, confusing some third-party tools. They now have a size equal to the byte length of their target path, as required by POSIX.

    https://github.com/restic/restic/issues/3667 https://github.com/restic/restic/pull/3668

  • Change #3519: Require Go 1.14 or newer

    Restic now requires Go 1.14 to build. This allows it to use new standard library features instead of an external dependency.

    https://github.com/restic/restic/issues/3519

  • Change #3641: Ignore parent snapshot for backup --stdin

    Restic uses a parent snapshot to speed up directory scanning when performing backups, but this only wasted time and memory when the backup source is stdin (using the --stdin option of the backup command), since no directory scanning is performed in this case.

    Snapshots made with backup --stdin no longer have a parent snapshot, which allows restic to skip some startup operations and saves a bit of resources.

    The --parent option is still available for backup --stdin, but is now ignored.

    https://github.com/restic/restic/issues/3641 https://github.com/restic/restic/pull/3645

  • Enhancement #233: Support negative include/exclude patterns

    If a pattern starts with an exclamation mark and it matches a file that was previously matched by a regular pattern, the match is cancelled. Notably, this can be used with --exclude-file to cancel the exclusion of some files.

    It works similarly to .gitignore, with the same limitation; Once a directory is excluded, it is not possible to include files inside the directory.

    Example of use as an exclude pattern for the backup command:

    $HOME/**/* !$HOME/Documents !$HOME/code !$HOME/.emacs.d !$HOME/games # [...] node_modules *~ *.o *.lo .pyc # [...] $HOME/code/linux/ !$HOME/code/linux/.git # [...]

    https://github.com/restic/restic/issues/233 https://github.com/restic/restic/pull/2311

  • Enhancement #1542: Add --dry-run/-n option to backup command

    Testing exclude filters and other configuration options was error prone as wrong filters could cause files to be uploaded unintentionally. It was also not possible to estimate beforehand how much data would be uploaded.

    The backup command now has a --dry-run/-n option, which performs all the normal steps of a backup without actually writing anything to the repository.

    Passing -vv will log information about files that would be added, allowing for verification of source and exclusion options before running the real backup.

    https://github.com/restic/restic/issues/1542 https://github.com/restic/restic/pull/2308 https://github.com/restic/restic/pull/3210 https://github.com/restic/restic/pull/3300

  • Enhancement #2202: Add upload checksum for Azure, GS, S3 and Swift backends

    Previously only the B2 and partially the Swift backends verified the integrity of uploaded (encrypted) files. The verification works by informing the backend about the expected hash of the uploaded file. The backend then verifies the upload and thereby rules out any data corruption during upload.

    We have now added upload checksums for the Azure, GS, S3 and Swift backends, which besides integrity checking for uploads also means that restic can now be used to store backups in S3 buckets which have Object Lock enabled.

    https://github.com/restic/restic/issues/2202 https://github.com/restic/restic/issues/2700 https://github.com/restic/restic/issues/3023 https://github.com/restic/restic/pull/3246

  • Enhancement #2388: Add warning for S3 if partial credentials are provided

    Previously restic did not notify about incomplete credentials when using the S3 backend, instead just reporting access denied.

    Restic now checks that both the AWS key ID and secret environment variables are set before connecting to the remote server, and reports an error if not.

    https://github.com/restic/restic/issues/2388 https://github.com/restic/restic/pull/3532

  • Enhancement #2508: Support JSON output and quiet mode for the diff command

    The diff command now supports outputting machine-readable output in JSON format. To enable this, pass the --json option to the command. To only print the summary and suppress detailed output, pass the --quiet option.

    https://github.com/restic/restic/issues/2508 https://github.com/restic/restic/pull/3592

  • Enhancement #2594: Speed up the restore --verify command

    The --verify option lets the restore command verify the file content after it has restored a snapshot. The performance of this operation has now been improved by up to a factor of two.

    https://github.com/restic/restic/pull/2594

  • Enhancement #2656: Add flag to disable TLS verification for self-signed certificates

    There is now an --insecure-tls global option in restic, which disables TLS verification for self-signed certificates in order to support some development workflows.

    https://github.com/restic/restic/issues/2656 https://github.com/restic/restic/pull/2657

  • Enhancement #2816: The backup command no longer updates file access times on Linux

    When reading files during backup, restic used to cause the operating system to update the files' access times. Note that this did not apply to filesystems with disabled file access times.

    Restic now instructs the operating system not to update the file access time, if the user running restic is the file owner or has root permissions.

    https://github.com/restic/restic/pull/2816

  • Enhancement #2880: Make recover collect only unreferenced trees

    Previously, the recover command used to generate a snapshot containing all root trees, even those which were already referenced by a snapshot.

    This has been improved such that it now only processes trees not already referenced by any snapshot.

    https://github.com/restic/restic/pull/2880

  • Enhancement #3003: Atomic uploads for the SFTP backend

    The SFTP backend did not upload files atomically. An interrupted upload could leave an incomplete file behind which could prevent restic from accessing the repository. This has now been fixed and uploads in the SFTP backend are done atomically.

    https://github.com/restic/restic/issues/3003 https://github.com/restic/restic/pull/3524

  • Enhancement #3127: Add xattr (extended attributes) support for Solaris

    Restic now supports xattr for the Solaris operating system.

    https://github.com/restic/restic/issues/3127 https://github.com/restic/restic/pull/3628

  • Enhancement #3429: Verify that new or modified keys are stored correctly

    When adding a new key or changing the password of a key, restic used to just create the new key (and remove the old one, when changing the password). There was no verification that the new key was stored correctly and works properly. As the repository cannot be decrypted without a valid key file, this could in rare cases cause the repository to become inaccessible.

    Restic now checks that new key files actually work before continuing. This can protect against some (rare) cases of hardware or storage problems.

    https://github.com/restic/restic/pull/3429

  • Enhancement #3436: Improve local backend's resilience to (system) crashes

    Restic now ensures that files stored using the local backend are created atomically (that is, files are either stored completely or not at all). This ensures that no incomplete files are left behind even if restic is terminated while writing a file.

    In addition, restic now tries to ensure that the directory in the repository which contains a newly uploaded file is also written to disk. This can prevent missing files if the system crashes or the disk is not properly unmounted.

    https://github.com/restic/restic/pull/3436

  • Enhancement #3464: Skip lock creation on forget if --no-lock and --dry-run

    Restic used to silently ignore the --no-lock option of the forget command.

    It now skips creation of lock file in case both --dry-run and --no-lock are specified. If --no-lock option is specified without --dry-run, restic prints a warning message to stderr.

    https://github.com/restic/restic/issues/3464 https://github.com/restic/restic/pull/3623

  • Enhancement #3490: Support random subset by size in check --read-data-subset

    The --read-data-subset option of the check command now supports a third way of specifying the subset to check, namely nS where n is a size in bytes with suffix S as k/K, m/M, g/G or t/T.

    https://github.com/restic/restic/issues/3490 https://github.com/restic/restic/pull/3548

  • Enhancement #3508: Cache blobs read by the dump command

    When dumping a file using the dump command, restic did not cache blobs in any way, so even consecutive runs of the same blob were loaded from the repository again and again, slowing down the dump.

    Now, the caching mechanism already used by the fuse command is also used by the dump command. This makes dumping much faster, especially for sparse files.

    https://github.com/restic/restic/pull/3508

  • Enhancement #3511: Support configurable timeout for the rclone backend

    A slow rclone backend could cause restic to time out while waiting for the repository to open. Restic now offers an -o rclone.timeout option to make this timeout configurable.

    https://github.com/restic/restic/issues/3511 https://github.com/restic/restic/pull/3514

  • Enhancement #3541: Improve handling of temporary B2 delete errors

    Deleting files on B2 could sometimes fail temporarily, which required restic to retry the delete operation. In some cases the file was deleted nevertheless, causing the retries and ultimately the restic command to fail. This has now been fixed.

    https://github.com/restic/restic/issues/3541 https://github.com/restic/restic/pull/3544

  • Enhancement #3542: Add file mode in symbolic notation to ls --json

    The ls --json command now provides the file mode in symbolic notation (using the permissions key), aligned with find --json.

    https://github.com/restic/restic/issues/3542 https://github.com/restic/restic/pull/3573 https://forum.restic.net/t/restic-ls-understanding-file-mode-with-json/4371

  • Enhancement #3593: Improve copy performance by parallelizing IO

    Restic copy previously only used a single thread for copying blobs between repositories, which resulted in limited performance when copying small blobs to/from a high latency backend (i.e. any remote backend, especially b2).

    Copying will now use 8 parallel threads to increase the throughput of the copy operation.

    https://github.com/restic/restic/pull/3593

Changelog for restic 0.12.1 (2021-08-03)

The following sections list the changes in restic 0.12.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2742: Improve error handling for rclone and REST backend over HTTP2
  • Fix #3111: Fix terminal output redirection for PowerShell
  • Fix #3184: backup --quiet no longer prints status information
  • Fix #3214: Treat an empty password as a fatal error for repository init
  • Fix #3267: copy failed to copy snapshots in rare cases
  • Fix #3296: Fix crash of check --read-data-subset=x% run for an empty repository
  • Fix #3302: Fix fdopendir: not a directory error for local backend
  • Fix #3305: Fix possibly missing backup summary of JSON output in case of error
  • Fix #3334: Print created new cache message only on a terminal
  • Fix #3380: Fix crash of backup --exclude='**'
  • Fix #3439: Correctly handle download errors during restore
  • Chg #3247: Empty files now have size of 0 in ls --json output
  • Enh #2780: Add release binaries for s390x architecture on Linux
  • Enh #3167: Allow specifying limit of snapshots list
  • Enh #3293: Add --repository-file2 option to init and copy command
  • Enh #3312: Add auto-completion support for fish
  • Enh #3336: SFTP backend now checks for disk space
  • Enh #3377: Add release binaries for Apple Silicon
  • Enh #3414: Add --keep-within-hourly option to restic forget
  • Enh #3426: Optimize read performance of mount command
  • Enh #3427: find --pack fallback to index if data file is missing
  • Enh #3456: Support filtering and specifying untagged snapshots

Details

Changelog for restic 0.12.0 (2021-02-14)

The following sections list the changes in restic 0.12.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1681: Make mount not create missing mount point directory
  • Fix #1800: Ignore no data available filesystem error during backup
  • Fix #2563: Report the correct owner of directories in FUSE mounts
  • Fix #2688: Make backup and tag commands separate tags by comma
  • Fix #2739: Make the cat command respect the --no-lock option
  • Fix #3014: Fix sporadic stream reset between rclone and restic
  • Fix #3087: The --use-fs-snapshot option now works on windows/386
  • Fix #3100: Do not require gs bucket permissions when running init
  • Fix #3111: Correctly detect output redirection for backup command on Windows
  • Fix #3151: Don't create invalid snapshots when backup is interrupted
  • Fix #3152: Do not hang until foregrounded when completed in background
  • Fix #3166: Improve error handling in the restore command
  • Fix #3232: Correct statistics for overlapping targets
  • Fix #3249: Improve error handling in gs backend
  • Chg #3095: Deleting files on Google Drive now moves them to the trash
  • Enh #909: Back up mountpoints as empty directories
  • Enh #2186: Allow specifying percentage in check --read-data-subset
  • Enh #2433: Make the dump command support zip format
  • Enh #2453: Report permanent/fatal backend errors earlier
  • Enh #2495: Add option to let backup trust mtime without checking ctime
  • Enh #2528: Add Alibaba/Aliyun OSS support in the s3 backend
  • Enh #2706: Configurable progress reports for non-interactive terminals
  • Enh #2718: Improve prune performance and make it more customizable
  • Enh #2941: Speed up the repacking step of the prune command
  • Enh #2944: Add backup options --files-from-{verbatim,raw}
  • Enh #3006: Speed up the rebuild-index command
  • Enh #3048: Add more checks for index and pack files in the check command
  • Enh #3083: Allow usage of deprecated S3 ListObjects API
  • Enh #3099: Reduce memory usage of check command
  • Enh #3106: Parallelize scan of snapshot content in copy and prune
  • Enh #3130: Parallelize reading of locks and snapshots
  • Enh #3147: Support additional environment variables for Swift authentication
  • Enh #3191: Add release binaries for MIPS architectures
  • Enh #3250: Add several more error checks
  • Enh #3254: Enable HTTP/2 for backend connections

Details

  • Bugfix #1681: Make mount not create missing mount point directory

    When specifying a non-existent directory as mount point for the mount command, restic used to create the specified directory automatically.

    This has now changed such that restic instead gives an error when the specified directory for the mount point does not exist.

    https://github.com/restic/restic/issues/1681 https://github.com/restic/restic/pull/3008

  • Bugfix #1800: Ignore no data available filesystem error during backup

    Restic was unable to backup files on some filesystems, for example certain configurations of CIFS on Linux which return a no data available error when reading extended attributes. These errors are now ignored.

    https://github.com/restic/restic/issues/1800 https://github.com/restic/restic/pull/3034

  • Bugfix #2563: Report the correct owner of directories in FUSE mounts

    Restic 0.10.0 changed the FUSE mount to always report the current user as the owner of directories within the FUSE mount, which is incorrect.

    This is now changed back to reporting the correct owner of a directory.

    https://github.com/restic/restic/issues/2563 https://github.com/restic/restic/pull/3141

  • Bugfix #2688: Make backup and tag commands separate tags by comma

    Running restic backup --tag foo,bar previously created snapshots with one single tag containing a comma (foo,bar) instead of two tags (foo, bar).

    Similarly, the tag command's --set, --add and --remove options would treat foo,bar as one tag instead of two tags. This was inconsistent with other commands and often unexpected when one intended foo,bar to mean two tags.

    To be consistent in all commands, restic now interprets foo,bar to mean two separate tags (foo and bar) instead of one tag (foo,bar) everywhere, including in the backup and tag commands.

    NOTE: This change might result in unexpected behavior in cases where you use the forget command and filter on tags like foo,bar. Snapshots previously backed up with --tag foo,bar will still not match that filter, but snapshots saved from now on will match that filter.

    To replace foo,bar tags with foo and bar tags in old snapshots, you can first generate a list of the relevant snapshots using a command like:

    Restic snapshots --json --quiet | jq '.[] | select(contains({tags: ["foo,bar"]})) | .id'

    And then use restic tag --set foo --set bar snapshotID [...] to set the new tags. Please adjust the commands to include real tag names and any additional tags, as well as the list of snapshots to process.

    https://github.com/restic/restic/issues/2688 https://github.com/restic/restic/pull/2690 https://github.com/restic/restic/pull/3197

  • Bugfix #2739: Make the cat command respect the --no-lock option

    The cat command would not respect the --no-lock flag. This is now fixed.

    https://github.com/restic/restic/issues/2739

  • Bugfix #3014: Fix sporadic stream reset between rclone and restic

    Sometimes when using restic with the rclone backend, an error message similar to the following would be printed:

    Didn't finish writing GET request (wrote 0/xxx): http2: stream closed

    It was found that this was caused by restic closing the connection to rclone to soon when downloading data. A workaround has been added which waits for the end of the download before closing the connection.

    https://github.com/rclone/rclone/issues/2598 https://github.com/restic/restic/pull/3014

  • Bugfix #3087: The --use-fs-snapshot option now works on windows/386

    Restic failed to create VSS snapshots on windows/386 with the following error:

    GetSnapshotProperties() failed: E_INVALIDARG (0x80070057)

    This is now fixed.

    https://github.com/restic/restic/issues/3087 https://github.com/restic/restic/pull/3090

  • Bugfix #3100: Do not require gs bucket permissions when running init

    Restic used to require bucket level permissions for the gs backend in order to initialize a restic repository.

    It now allows a gs service account to initialize a repository if the bucket does exist and the service account has permissions to write/read to that bucket.

    https://github.com/restic/restic/issues/3100

  • Bugfix #3111: Correctly detect output redirection for backup command on Windows

    On Windows, since restic 0.10.0 the backup command did not properly detect when the output was redirected to a file. This caused restic to output terminal control characters. This has been fixed by correcting the terminal detection.

    https://github.com/restic/restic/issues/3111 https://github.com/restic/restic/pull/3150

  • Bugfix #3151: Don't create invalid snapshots when backup is interrupted

    When canceling a backup run at a certain moment it was possible that restic created a snapshot with an invalid "null" tree. This caused check and other operations to fail. The backup command now properly handles interruptions and never saves a snapshot when interrupted.

    https://github.com/restic/restic/issues/3151 https://github.com/restic/restic/pull/3164

  • Bugfix #3152: Do not hang until foregrounded when completed in background

    On Linux, when running in the background restic failed to stop the terminal output of the backup command after it had completed. This caused restic to hang until moved to the foreground. This has now been fixed.

    https://github.com/restic/restic/pull/3152 https://forum.restic.net/t/restic-alpine-container-cron-hangs-epoll-pwait/3334

  • Bugfix #3166: Improve error handling in the restore command

    The restore command used to not print errors while downloading file contents from the repository. It also incorrectly exited with a zero error code even when there were errors during the restore process. This has all been fixed and restore now returns with a non-zero exit code when there's an error.

    https://github.com/restic/restic/issues/3166 https://github.com/restic/restic/pull/3207

  • Bugfix #3232: Correct statistics for overlapping targets

    A user reported that restic's statistics and progress information during backup was not correctly calculated when the backup targets (files/dirs to save) overlap. For example, consider a directory foo which contains (among others) a file foo/bar. When restic backup foo foo/bar was run, restic counted the size of the file foo/bar twice, so the completeness percentage as well as the number of files was wrong. This is now corrected.

    https://github.com/restic/restic/issues/3232 https://github.com/restic/restic/pull/3243

  • Bugfix #3249: Improve error handling in gs backend

    The gs backend did not notice when the last step of completing a file upload failed. Under rare circumstances, this could cause missing files in the backup repository. This has now been fixed.

    https://github.com/restic/restic/pull/3249

  • Change #3095: Deleting files on Google Drive now moves them to the trash

    When deleting files on Google Drive via the rclone backend, restic used to bypass the trash folder required that one used the -o rclone.args option to enable usage of the trash folder. This ensured that deleted files in Google Drive were not kept indefinitely in the trash folder. However, since Google Drive's trash retention policy changed to deleting trashed files after 30 days, this is no longer needed.

    Restic now leaves it up to rclone and its configuration to use or not use the trash folder when deleting files. The default is to use the trash folder, as of rclone 1.53.2. To re-enable the restic 0.11 behavior, set the RCLONE_DRIVE_USE_TRASH environment variable or change the rclone configuration. See the rclone documentation for more details.

    https://github.com/restic/restic/issues/3095 https://github.com/restic/restic/pull/3102

  • Enhancement #909: Back up mountpoints as empty directories

    When the --one-file-system option is specified to restic backup, it ignores all file systems mounted below one of the target directories. This means that when a snapshot is restored, users needed to manually recreate the mountpoint directories.

    Restic now backs up mountpoints as empty directories and therefore implements the same approach as tar.

    https://github.com/restic/restic/issues/909 https://github.com/restic/restic/pull/3119

  • Enhancement #2186: Allow specifying percentage in check --read-data-subset

    We've enhanced the check command's --read-data-subset option to also accept a percentage (e.g. 2.5% or 10%). This will check the given percentage of pack files (which are randomly selected on each run).

    https://github.com/restic/restic/issues/2186 https://github.com/restic/restic/pull/3038

  • Enhancement #2433: Make the dump command support zip format

    Previously, restic could dump the contents of a whole folder structure only in the tar format. The dump command now has a new flag to change output format to zip. Just pass --archive zip as an option to restic dump.

    https://github.com/restic/restic/pull/2433 https://github.com/restic/restic/pull/3081

  • Enhancement #2453: Report permanent/fatal backend errors earlier

    When encountering errors in reading from or writing to storage backends, restic retries the failing operation up to nine times (for a total of ten attempts). It used to retry all backend operations, but now detects some permanent error conditions so that it can report fatal errors earlier.

    Permanent failures include local disks being full, SSH connections dropping and permission errors.

    https://github.com/restic/restic/issues/2453 https://github.com/restic/restic/issues/3180 https://github.com/restic/restic/pull/3170 https://github.com/restic/restic/pull/3181

  • Enhancement #2495: Add option to let backup trust mtime without checking ctime

    The backup command used to require that both ctime and mtime of a file matched with a previously backed up version to determine that the file was unchanged. In other words, if either ctime or mtime of the file had changed, it would be considered changed and restic would read the file's content again to back up the relevant (changed) parts of it.

    The new option --ignore-ctime makes restic look at mtime only, such that ctime changes for a file does not cause restic to read the file's contents again.

    The check for both ctime and mtime was introduced in restic 0.9.6 to make backups more reliable in the face of programs that reset mtime (some Unix archivers do that), but it turned out to often be expensive because it made restic read file contents even if only the metadata (owner, permissions) of a file had changed. The new --ignore-ctime option lets the user restore the 0.9.5 behavior when needed. The existing --ignore-inode option already turned off this behavior, but also removed a different check.

    Please note that changes in files' metadata are still recorded, regardless of the command line options provided to the backup command.

    https://github.com/restic/restic/issues/2495 https://github.com/restic/restic/issues/2558 https://github.com/restic/restic/issues/2819 https://github.com/restic/restic/pull/2823

  • Enhancement #2528: Add Alibaba/Aliyun OSS support in the s3 backend

    A new extended option s3.bucket-lookup has been added to support Alibaba/Aliyun OSS in the s3 backend. The option can be set to one of the following values:

    • auto - Existing behaviour - dns - Use DNS style bucket access - path - Use path style bucket access

    To make the s3 backend work with Alibaba/Aliyun OSS you must set s3.bucket-lookup to dns and set the s3.region parameter. For example:

    Restic -o s3.bucket-lookup=dns -o s3.region=oss-eu-west-1 -r s3:https://oss-eu-west-1.aliyuncs.com/bucketname init

    Note that s3.region must be set, otherwise the MinIO SDK tries to look it up and it seems that Alibaba doesn't support that properly.

    https://github.com/restic/restic/issues/2528 https://github.com/restic/restic/pull/2535

  • Enhancement #2706: Configurable progress reports for non-interactive terminals

    The backup, check and prune commands never printed any progress reports on non-interactive terminals. This behavior is now configurable using the RESTIC_PROGRESS_FPS environment variable. Use for example a value of 1 for an update every second, or 0.01666 for an update every minute.

    The backup command now also prints the current progress when restic receives a SIGUSR1 signal.

    Setting the RESTIC_PROGRESS_FPS environment variable or sending a SIGUSR1 signal prints a status report even when --quiet was specified.

    https://github.com/restic/restic/issues/2706 https://github.com/restic/restic/issues/3194 https://github.com/restic/restic/pull/3199

  • Enhancement #2718: Improve prune performance and make it more customizable

    The prune command is now much faster. This is especially the case for remote repositories or repositories with not much data to remove. Also the memory usage of the prune command is now reduced.

    Restic used to rebuild the index from scratch after pruning. This could lead to missing packs in the index in some cases for eventually consistent backends such as e.g. AWS S3. This behavior is now changed and the index rebuilding uses the information already known by prune.

    By default, the prune command no longer removes all unused data. This behavior can be fine-tuned by new options, like the acceptable amount of unused space or the maximum size of data to reorganize. For more details, please see https://restic.readthedocs.io/en/stable/060_forget.html .

    Moreover, prune now accepts the --dry-run option and also running forget --dry-run --prune will show what prune would do.

    This enhancement also fixes several open issues, e.g.: - https://github.com/restic/restic/issues/1140 - https://github.com/restic/restic/issues/1599 - https://github.com/restic/restic/issues/1985 - https://github.com/restic/restic/issues/2112 - https://github.com/restic/restic/issues/2227 - https://github.com/restic/restic/issues/2305

    https://github.com/restic/restic/pull/2718 https://github.com/restic/restic/pull/2842

  • Enhancement #2941: Speed up the repacking step of the prune command

    The repack step of the prune command, which moves still used file parts into new pack files such that the old ones can be garbage collected later on, now processes multiple pack files in parallel. This is especially beneficial for high latency backends or when using a fast network connection.

    https://github.com/restic/restic/pull/2941

  • Enhancement #2944: Add backup options --files-from-{verbatim,raw}

    The new backup options --files-from-verbatim and --files-from-raw read a list of files to back up from a file. Unlike the existing --files-from option, these options do not interpret the listed filenames as glob patterns; instead, whitespace in filenames is preserved as-is and no pattern expansion is done. Please see the documentation for specifics.

    These new options are highly recommended over --files-from, when using a script to generate the list of files to back up.

    https://github.com/restic/restic/issues/2944 https://github.com/restic/restic/issues/3013

  • Enhancement #3006: Speed up the rebuild-index command

    We've optimized the rebuild-index command. Now, existing index entries are used to minimize the number of pack files that must be read. This speeds up the index rebuild a lot.

    Additionally, the option --read-all-packs has been added, implementing the previous behavior.

    https://github.com/restic/restic/pull/3006 https://github.com/restic/restic/issue/2547

  • Enhancement #3048: Add more checks for index and pack files in the check command

    The check command run with the --read-data or --read-data-subset options used to only verify only the pack file content - it did not check if the blobs within the pack are correctly contained in the index.

    A check for the latter is now in place, which can print the following error:

    Blob ID is not contained in index or position is incorrect

    Another test is also added, which compares pack file sizes computed from the index and the pack header with the actual file size. This test is able to detect truncated pack files.

    If the index is not correct, it can be rebuilt by using the rebuild-index command.

    Having added these tests, restic check is now able to detect non-existing blobs which are wrongly referenced in the index. This situation could have lead to missing data.

    https://github.com/restic/restic/pull/3048 https://github.com/restic/restic/pull/3082

  • Enhancement #3083: Allow usage of deprecated S3 ListObjects API

    Some S3 API implementations, e.g. Ceph before version 14.2.5, have a broken ListObjectsV2 implementation which causes problems for restic when using their API endpoints. When a broken server implementation is used, restic prints errors similar to the following:

    List() returned error: Truncated response should have continuation token set

    As a temporary workaround, restic now allows using the older ListObjects endpoint by setting the s3.list-objects-v1 extended option, for instance:

    Restic -o s3.list-objects-v1=true snapshots

    Please note that this option may be removed in future versions of restic.

    https://github.com/restic/restic/issues/3083 https://github.com/restic/restic/pull/3085

  • Enhancement #3099: Reduce memory usage of check command

    The check command now requires less memory if it is run without the --check-unused option.

    https://github.com/restic/restic/pull/3099

  • Enhancement #3106: Parallelize scan of snapshot content in copy and prune

    The copy and prune commands used to traverse the directories of snapshots one by one to find used data. This snapshot traversal is now parallized which can speed up this step several times.

    In addition the check command now reports how many snapshots have already been processed.

    https://github.com/restic/restic/pull/3106

  • Enhancement #3130: Parallelize reading of locks and snapshots

    Restic used to read snapshots sequentially. For repositories containing many snapshots this slowed down commands which have to read all snapshots.

    Now the reading of snapshots is parallelized. This speeds up for example prune, backup and other commands that search for snapshots with certain properties or which have to find the latest snapshot.

    The speed up also applies to locks stored in the backup repository.

    https://github.com/restic/restic/pull/3130 https://github.com/restic/restic/pull/3174

  • Enhancement #3147: Support additional environment variables for Swift authentication

    The swift backend now supports the following additional environment variables for passing authentication details to restic: OS_USER_ID, OS_USER_DOMAIN_ID, OS_PROJECT_DOMAIN_ID and OS_TRUST_ID

    Depending on the openrc configuration file these might be required when the user and project domains differ from one another.

    https://github.com/restic/restic/issues/3147 https://github.com/restic/restic/pull/3158

  • Enhancement #3191: Add release binaries for MIPS architectures

    We've added a few new architectures for Linux to the release binaries: mips, mipsle, mips64, and mip64le. MIPS is mostly used for low-end embedded systems.

    https://github.com/restic/restic/issues/3191 https://github.com/restic/restic/pull/3208

  • Enhancement #3250: Add several more error checks

    We've added a lot more error checks in places where errors were previously ignored (as hinted by the static analysis program errcheck via golangci-lint).

    https://github.com/restic/restic/pull/3250

  • Enhancement #3254: Enable HTTP/2 for backend connections

    Go's HTTP library usually automatically chooses between HTTP/1.x and HTTP/2 depending on what the server supports. But for compatibility this mechanism is disabled if DialContext is used (which is the case for restic). This change allows restic's HTTP client to negotiate HTTP/2 if supported by the server.

    https://github.com/restic/restic/pull/3254

Changelog for restic 0.11.0 (2020-11-05)

The following sections list the changes in restic 0.11.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1212: Restore timestamps and permissions on intermediate directories
  • Fix #1756: Mark repository files as read-only when using the local backend
  • Fix #2241: Hide password in REST backend repository URLs
  • Fix #2319: Correctly dump directories into tar files
  • Fix #2491: Don't require self-update --output placeholder file
  • Fix #2834: Fix rare cases of backup command hanging forever
  • Fix #2938: Fix manpage formatting
  • Fix #2942: Make --exclude-larger-than handle disappearing files
  • Fix #2951: Restic generate, help and self-update no longer check passwords
  • Fix #2979: Make snapshots --json output [] instead of null when no snapshots
  • Enh #340: Add support for Volume Shadow Copy Service (VSS) on Windows
  • Enh #1458: New option --repository-file
  • Enh #2849: Authenticate to Google Cloud Storage with access token
  • Enh #2969: Optimize check for unchanged files during backup
  • Enh #2978: Warn if parent snapshot cannot be loaded during backup

Details

Changelog for restic 0.10.0 (2020-09-19)

The following sections list the changes in restic 0.10.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1863: Report correct number of directories processed by backup
  • Fix #2254: Fix tar issues when dumping /
  • Fix #2281: Handle format verbs like '%' properly in find output
  • Fix #2298: Do not hang when run as a background job
  • Fix #2389: Fix mangled json output of backup command
  • Fix #2390: Refresh lock timestamp
  • Fix #2429: Backup --json reports total_bytes_processed as 0
  • Fix #2469: Fix incorrect bytes stats in diff command
  • Fix #2518: Do not crash with Synology NAS sftp server
  • Fix #2531: Fix incorrect size calculation in stats --mode restore-size
  • Fix #2537: Fix incorrect file counts in stats --mode restore-size
  • Fix #2592: SFTP backend supports IPv6 addresses
  • Fix #2607: Honor RESTIC_CACHE_DIR environment variable on Mac and Windows
  • Fix #2668: Don't abort the stats command when data blobs are missing
  • Fix #2674: Add stricter prune error checks
  • Fix #2899: Fix possible crash in the progress bar of check --read-data
  • Chg #1597: Honor the --no-lock flag in the mount command
  • Chg #2482: Remove vendored dependencies
  • Chg #2546: Return exit code 3 when failing to backup all source data
  • Chg #2600: Update dependencies, require Go >= 1.13
  • Enh #323: Add command for copying snapshots between repositories
  • Enh #551: Use optimized library for hash calculation of file chunks
  • Enh #1570: Support specifying multiple host flags for various commands
  • Enh #1680: Optimize restic mount
  • Enh #2072: Display snapshot date when using restic find
  • Enh #2175: Allow specifying user and host when creating keys
  • Enh #2195: Simplify and improve restore performance
  • Enh #2277: Add support for ppc64le
  • Enh #2328: Improve speed of check command
  • Enh #2395: Ignore sync errors when operation not supported by local filesystem
  • Enh #2423: Support user@domain parsing as user
  • Enh #2427: Add flag --iexclude-file to backup command
  • Enh #2569: Support excluding files by their size
  • Enh #2571: Self-heal missing file parts during backup of unchanged files
  • Enh #2576: Improve the chunking algorithm
  • Enh #2598: Improve speed of diff command
  • Enh #2599: Slightly reduce memory usage of prune and stats commands
  • Enh #2733: S3 backend: Add support for WebIdentityTokenFile
  • Enh #2773: Optimize handling of new index entries
  • Enh #2781: Reduce memory consumption of in-memory index
  • Enh #2786: Optimize list blobs command
  • Enh #2790: Optimized file access in restic mount
  • Enh #2840: Speed-up file deletion in forget, prune and rebuild-index
  • Enh #2858: Support filtering snapshots by tag and path in the stats command

Details

Changelog for restic 0.9.6 (2019-11-22)

The following sections list the changes in restic 0.9.6 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2063: Allow absolute path for filename when backing up from stdin
  • Fix #2174: Save files with invalid timestamps
  • Fix #2249: Read fresh metadata for unmodified files
  • Fix #2301: Add upper bound for t in --read-data-subset=n/t
  • Fix #2321: Check errors when loading index files
  • Enh #2179: Use ctime when checking for file changes
  • Enh #2306: Allow multiple retries for interactive password input
  • Enh #2330: Make --group-by accept both singular and plural
  • Enh #2350: Add option to configure S3 region

Details

  • Bugfix #2063: Allow absolute path for filename when backing up from stdin

    When backing up from stdin, handle directory path for --stdin-filename. This can be used to specify the full path for the backed-up file.

    https://github.com/restic/restic/issues/2063

  • Bugfix #2174: Save files with invalid timestamps

    When restic reads invalid timestamps (year is before 0000 or after 9999) it refused to read and archive the file. We've changed the behavior and will now save modified timestamps with the year set to either 0000 or 9999, the rest of the timestamp stays the same, so the file will be saved (albeit with a bogus timestamp).

    https://github.com/restic/restic/issues/2174 https://github.com/restic/restic/issues/1173

  • Bugfix #2249: Read fresh metadata for unmodified files

    Restic took all metadata for files which were detected as unmodified, not taking into account changed metadata (ownership, mode). This is now corrected.

    https://github.com/restic/restic/issues/2249 https://github.com/restic/restic/pull/2252

  • Bugfix #2301: Add upper bound for t in --read-data-subset=n/t

    256 is the effective maximum for t, but restic would allow larger values, leading to strange behavior.

    https://github.com/restic/restic/issues/2301 https://github.com/restic/restic/pull/2304

  • Bugfix #2321: Check errors when loading index files

    Restic now checks and handles errors which occur when loading index files, the missing check leads to odd errors (and a stack trace printed to users) later. This was reported in the forum.

    https://github.com/restic/restic/pull/2321 https://forum.restic.net/t/check-rebuild-index-prune/1848/13

  • Enhancement #2179: Use ctime when checking for file changes

    Previously, restic only checked a file's mtime (along with other non-timestamp metadata) to decide if a file has changed. This could cause restic to not notice that a file has changed (and therefore continue to store the old version, as opposed to the modified version) if something edits the file and then resets the timestamp. Restic now also checks the ctime of files, so any modifications to a file should be noticed, and the modified file will be backed up. The ctime check will be disabled if the --ignore-inode flag was given.

    If this change causes problems for you, please open an issue, and we can look in to adding a seperate flag to disable just the ctime check.

    https://github.com/restic/restic/issues/2179 https://github.com/restic/restic/pull/2212

  • Enhancement #2306: Allow multiple retries for interactive password input

    Restic used to quit if the repository password was typed incorrectly once. Restic will now ask the user again for the repository password if typed incorrectly. The user will now get three tries to input the correct password before restic quits.

    https://github.com/restic/restic/issues/2306

  • Enhancement #2330: Make --group-by accept both singular and plural

    One can now use the values host/hosts, path/paths and tag / tags interchangeably in the --group-by argument.

    https://github.com/restic/restic/issues/2330

  • Enhancement #2350: Add option to configure S3 region

    We've added a new option for setting the region when accessing an S3-compatible service. For some providers, it is required to set this to a valid value. You can do that either by setting the environment variable AWS_DEFAULT_REGION or using the option s3.region, e.g. like this: -o s3.region="us-east-1".

    https://github.com/restic/restic/pull/2350

Changelog for restic 0.9.5 (2019-04-23)

The following sections list the changes in restic 0.9.5 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #2135: Return error when no bytes could be read from stdin
  • Fix #2181: Don't cancel timeout after 30 seconds for self-update
  • Fix #2203: Fix reading passwords from stdin
  • Fix #2224: Don't abort the find command when a tree can't be loaded
  • Enh #1895: Add case insensitive include & exclude options
  • Enh #1937: Support streaming JSON output for backup
  • Enh #2037: Add group-by option to snapshots command
  • Enh #2124: Ability to dump folders to tar via stdout
  • Enh #2139: Return error if no bytes could be read for backup --stdin
  • Enh #2155: Add Openstack application credential auth for Swift
  • Enh #2184: Add --json support to forget command
  • Enh #2205: Add --ignore-inode option to backup cmd
  • Enh #2220: Add config option to set S3 storage class

Details

  • Bugfix #2135: Return error when no bytes could be read from stdin

    We assume that users reading backup data from stdin want to know when no data could be read, so now restic returns an error when backup --stdin is called but no bytes could be read. Usually, this means that an earlier command in a pipe has failed. The documentation was amended and now recommends setting the pipefail option (set -o pipefail).

    https://github.com/restic/restic/pull/2135 https://github.com/restic/restic/pull/2139

  • Bugfix #2181: Don't cancel timeout after 30 seconds for self-update

    https://github.com/restic/restic/issues/2181

  • Bugfix #2203: Fix reading passwords from stdin

    Passwords for the init, key add, and key passwd commands can now be read from non-terminal stdin.

    https://github.com/restic/restic/issues/2203

  • Bugfix #2224: Don't abort the find command when a tree can't be loaded

    Change the find command so that missing trees don't result in a crash. Instead, the error is logged to the debug log, and the tree ID is displayed along with the snapshot it belongs to. This makes it possible to recover repositories that are missing trees by forgetting the snapshots they are used in.

    https://github.com/restic/restic/issues/2224

  • Enhancement #1895: Add case insensitive include & exclude options

    The backup and restore commands now have --iexclude and --iinclude flags as case insensitive variants of --exclude and --include.

    https://github.com/restic/restic/issues/1895 https://github.com/restic/restic/pull/2032

  • Enhancement #1937: Support streaming JSON output for backup

    We've added support for getting machine-readable status output during backup, just pass the flag --json for restic backup and restic will output a stream of JSON objects which contain the current progress.

    https://github.com/restic/restic/issues/1937 https://github.com/restic/restic/pull/1944

  • Enhancement #2037: Add group-by option to snapshots command

    We have added an option to group the output of the snapshots command, similar to the output of the forget command. The option has been called "--group-by" and accepts any combination of the values "host", "paths" and "tags", separated by commas. Default behavior (not specifying --group-by) has not been changed. We have added support of the grouping to the JSON output.

    https://github.com/restic/restic/issues/2037 https://github.com/restic/restic/pull/2087

  • Enhancement #2124: Ability to dump folders to tar via stdout

    We've added the ability to dump whole folders to stdout via the dump command. Restic now requires at least Go 1.10 due to a limitation of the standard library for Go <= 1.9.

    https://github.com/restic/restic/issues/2123 https://github.com/restic/restic/pull/2124

  • Enhancement #2139: Return error if no bytes could be read for backup --stdin

    When restic is used to backup the output of a program, like mysqldump | restic backup --stdin, it now returns an error if no bytes could be read at all. This catches the failure case when mysqldump failed for some reason and did not output any data to stdout.

    https://github.com/restic/restic/pull/2139

  • Enhancement #2155: Add Openstack application credential auth for Swift

    Since Openstack Queens Identity (auth V3) service supports an application credential auth method. It allows to create a technical account with the limited roles. This commit adds an application credential authentication method for the Swift backend.

    https://github.com/restic/restic/issues/2155

  • Enhancement #2184: Add --json support to forget command

    The forget command now supports the --json argument, outputting the information about what is (or would-be) kept and removed from the repository.

    https://github.com/restic/restic/issues/2184 https://github.com/restic/restic/pull/2185

  • Enhancement #2205: Add --ignore-inode option to backup cmd

    This option handles backup of virtual filesystems that do not keep fixed inodes for files, like Fuse-based, pCloud, etc. Ignoring inode changes allows to consider the file as unchanged if last modification date and size are unchanged.

    https://github.com/restic/restic/issues/1631 https://github.com/restic/restic/pull/2205 https://github.com/restic/restic/pull/2047

  • Enhancement #2220: Add config option to set S3 storage class

    The s3.storage-class option can be passed to restic (using -o) to specify the storage class to be used for S3 objects created by restic.

    The storage class is passed as-is to S3, so it needs to be understood by the API. On AWS, it can be one of STANDARD, STANDARD_IA, ONEZONE_IA, INTELLIGENT_TIERING and REDUCED_REDUNDANCY. If unspecified, the default storage class is used (STANDARD on AWS).

    You can mix storage classes in the same bucket, and the setting isn't stored in the restic repository, so be sure to specify it with each command that writes to S3.

    https://github.com/restic/restic/issues/706 https://github.com/restic/restic/pull/2220

Changelog for restic 0.9.4 (2019-01-06)

The following sections list the changes in restic 0.9.4 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1989: Google Cloud Storage: Respect bandwidth limit
  • Fix #2040: Add host name filter shorthand flag for stats command
  • Fix #2068: Correctly return error loading data
  • Fix #2095: Consistently use local time for snapshots times
  • Enh #1605: Concurrent restore
  • Enh #2017: Mount: Enforce FUSE Unix permissions with allow-other
  • Enh #2070: Make all commands display timestamps in local time
  • Enh #2085: Allow --files-from to be specified multiple times
  • Enh #2089: Increase granularity of the "keep within" retention policy
  • Enh #2094: Run command to get password
  • Enh #2097: Add key hinting

Details

  • Bugfix #1989: Google Cloud Storage: Respect bandwidth limit

    The GCS backend did not respect the bandwidth limit configured, a previous commit accidentally removed support for it.

    https://github.com/restic/restic/issues/1989 https://github.com/restic/restic/pull/2100

  • Bugfix #2040: Add host name filter shorthand flag for stats command

    The default value for --host flag was set to 'H' (the shorthand version of the flag), this caused the lookup for the latest snapshot to fail.

    Add shorthand flag -H for --host (with empty default so if these flags are not specified the latest snapshot will not filter by host name).

    Also add shorthand -H for backup command.

    https://github.com/restic/restic/issues/2040

  • Bugfix #2068: Correctly return error loading data

    In one case during prune and check, an error loading data from the backend is not returned properly. This is now corrected.

    https://github.com/restic/restic/issues/1999#issuecomment-433737921 https://github.com/restic/restic/pull/2068

  • Bugfix #2095: Consistently use local time for snapshots times

    By default snapshots created with restic backup were set to local time, but when the --time flag was used the provided timestamp was parsed as UTC. With this change all snapshots times are set to local time.

    https://github.com/restic/restic/pull/2095

  • Enhancement #1605: Concurrent restore

    This change significantly improves restore performance, especially when using high-latency remote repositories like B2.

    The implementation now uses several concurrent threads to download and process multiple remote files concurrently. To further reduce restore time, each remote file is downloaded using a single repository request.

    https://github.com/restic/restic/issues/1605 https://github.com/restic/restic/pull/1719

  • Enhancement #2017: Mount: Enforce FUSE Unix permissions with allow-other

    The fuse mount (restic mount) now lets the kernel check the permissions of the files within snapshots (this is done through the DefaultPermissions FUSE option) when the option --allow-other is specified.

    To restore the old behavior, we've added the --no-default-permissions option. This allows all users that have access to the mount point to access all files within the snapshots.

    https://github.com/restic/restic/pull/2017

  • Enhancement #2070: Make all commands display timestamps in local time

    Restic used to drop the timezone information from displayed timestamps, it now converts timestamps to local time before printing them so the times can be easily compared to.

    https://github.com/restic/restic/pull/2070

  • Enhancement #2085: Allow --files-from to be specified multiple times

    Before, restic took only the last file specified with --files-from into account, this is now corrected.

    https://github.com/restic/restic/issues/2085 https://github.com/restic/restic/pull/2086

  • Enhancement #2089: Increase granularity of the "keep within" retention policy

    The keep-within option of the forget command now accepts time ranges with an hourly granularity. For example, running restic forget --keep-within 3d12h will keep all the snapshots made within three days and twelve hours from the time of the latest snapshot.

    https://github.com/restic/restic/issues/2089 https://github.com/restic/restic/pull/2090

  • Enhancement #2094: Run command to get password

    We've added the --password-command option which allows specifying a command that restic runs every time the password for the repository is needed, so it can be integrated with a password manager or keyring. The option can also be set via the environment variable $RESTIC_PASSWORD_COMMAND.

    https://github.com/restic/restic/pull/2094

  • Enhancement #2097: Add key hinting

    Added a new option --key-hint and corresponding environment variable RESTIC_KEY_HINT. The key hint is a key ID to try decrypting first, before other keys in the repository.

    This change will benefit repositories with many keys; if the correct key hint is supplied then restic only needs to check one key. If the key hint is incorrect (the key does not exist, or the password is incorrect) then restic will check all keys, as usual.

    https://github.com/restic/restic/issues/2097

Changelog for restic 0.9.3 (2018-10-13)

The following sections list the changes in restic 0.9.3 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1935: Remove truncated files from cache
  • Fix #1978: Do not return an error when the scanner is slower than backup
  • Enh #1766: Restore: suppress lchown errors when not running as root
  • Enh #1777: Improve the find command
  • Enh #1876: Display reason why forget keeps snapshots
  • Enh #1891: Accept glob in paths loaded via --files-from
  • Enh #1909: Reject files/dirs by name first
  • Enh #1920: Vendor dependencies with Go 1.11 Modules
  • Enh #1940: Add directory filter to ls command
  • Enh #1949: Add new command self-update
  • Enh #1953: Ls: Add JSON output support for restic ls cmd
  • Enh #1962: Stream JSON output for ls command
  • Enh #1967: Use --host everywhere
  • Enh #2028: Display size of cache directories

Details

  • Bugfix #1935: Remove truncated files from cache

    When a file in the local cache is truncated, and restic tries to access data beyond the end of the (cached) file, it used to return an error "EOF". This is now fixed, such truncated files are removed and the data is fetched directly from the backend.

    https://github.com/restic/restic/issues/1935

  • Bugfix #1978: Do not return an error when the scanner is slower than backup

    When restic makes a backup, there's a background task called "scanner" which collects information on how many files and directories are to be saved, in order to display progress information to the user. When the backup finishes faster than the scanner, it is aborted because the result is not needed any more. This logic contained a bug, where quitting the scanner process was treated as an error, and caused restic to print an unhelpful error message ("context canceled").

    https://github.com/restic/restic/issues/1978 https://github.com/restic/restic/pull/1991

  • Enhancement #1766: Restore: suppress lchown errors when not running as root

    Like "cp" and "rsync" do, restic now only reports errors for changing the ownership of files during restore if it is run as root, on non-Windows operating systems. On Windows, the error is reported as usual.

    https://github.com/restic/restic/issues/1766

  • Enhancement #1777: Improve the find command

    We've updated the find command to support multiple patterns.

    restic find is now able to list the snapshots containing a specific tree or blob, or even the snapshots that contain blobs belonging to a given pack. A list of IDs can be given, as long as they all have the same type.

    The command find can also display the pack IDs the blobs belong to, if the --show-pack-id flag is provided.

    https://github.com/restic/restic/issues/1777 https://github.com/restic/restic/pull/1780

  • Enhancement #1876: Display reason why forget keeps snapshots

    We've added a column to the list of snapshots forget keeps which details the reasons to keep a particuliar snapshot. This makes debugging policies for forget much easier. Please remember to always try things out with --dry-run!

    https://github.com/restic/restic/pull/1876

  • Enhancement #1891: Accept glob in paths loaded via --files-from

    Before that, behaviour was different if paths were appended to command line or from a file, because wild card characters were expanded by shell if appended to command line, but not expanded if loaded from file.

    https://github.com/restic/restic/issues/1891

  • Enhancement #1909: Reject files/dirs by name first

    The current scanner/archiver code had an architectural limitation: it always ran the lstat() system call on all files and directories before a decision to include/exclude the file/dir was made. This lead to a lot of unnecessary system calls for items that could have been rejected by their name or path only.

    We've changed the archiver/scanner implementation so that it now first rejects by name/path, and only runs the system call on the remaining items. This reduces the number of lstat() system calls a lot (depending on the exclude settings).

    https://github.com/restic/restic/issues/1909 https://github.com/restic/restic/pull/1912

  • Enhancement #1920: Vendor dependencies with Go 1.11 Modules

    Until now, we've used dep for managing dependencies, we've now switch to using Go modules. For users this does not change much, only if you want to compile restic without downloading anything with Go 1.11, then you need to run: go build -mod=vendor build.go

    https://github.com/restic/restic/pull/1920

  • Enhancement #1940: Add directory filter to ls command

    The ls command can now be filtered by directories, so that only files in the given directories will be shown. If the --recursive flag is specified, then ls will traverse subfolders and list their files as well.

    It used to be possible to specify multiple snapshots, but that has been replaced by only one snapshot and the possibility of specifying multiple directories.

    Specifying directories constrains the walk, which can significantly speed up the listing.

    https://github.com/restic/restic/issues/1940 https://github.com/restic/restic/pull/1941

  • Enhancement #1949: Add new command self-update

    We have added a new command called self-update which downloads the latest released version of restic from GitHub and replaces the current binary with it. It does not rely on any external program (so it'll work everywhere), but still verifies the GPG signature using the embedded GPG public key.

    By default, the self-update command is hidden behind the selfupdate built tag, which is only set when restic is built using build.go (including official releases). The reason for this is that downstream distributions will then not include the command by default, so users are encouraged to use the platform-specific distribution mechanism.

    https://github.com/restic/restic/pull/1949

  • Enhancement #1953: Ls: Add JSON output support for restic ls cmd

    We've implemented listing files in the repository with JSON as output, just pass --json as an option to restic ls. This makes the output of the command machine readable.

    https://github.com/restic/restic/pull/1953

  • Enhancement #1962: Stream JSON output for ls command

    The ls command now supports JSON output with the global --json flag, and this change streams out JSON messages one object at a time rather than en entire array buffered in memory before encoding. The advantage is it allows large listings to be handled efficiently.

    Two message types are printed: snapshots and nodes. A snapshot object will precede node objects which belong to that snapshot. The struct_type field can be used to determine which kind of message an object is.

    https://github.com/restic/restic/pull/1962

  • Enhancement #1967: Use --host everywhere

    We now use the flag --host for all commands which need a host name, using --hostname (e.g. for restic backup) still works, but will print a deprecation warning. Also, add the short option -H where possible.

    https://github.com/restic/restic/issues/1967

  • Enhancement #2028: Display size of cache directories

    The cache command now by default shows the size of the individual cache directories. It can be disabled with --no-size.

    https://github.com/restic/restic/issues/2028 https://github.com/restic/restic/pull/2033

Changelog for restic 0.9.2 (2018-08-06)

The following sections list the changes in restic 0.9.2 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1854: Allow saving files/dirs on different fs with --one-file-system
  • Fix #1861: Fix case-insensitive search with restic find
  • Fix #1870: Fix restore with --include
  • Fix #1880: Use --cache-dir argument for check command
  • Fix #1893: Return error when exclude file cannot be read
  • Enh #874: Add stats command to get information about a repository
  • Enh #1477: S3 backend: accept AWS_SESSION_TOKEN
  • Enh #1772: Add restore --verify to verify restored file content
  • Enh #1853: Add JSON output support to restic key list
  • Enh #1901: Update the Backblaze B2 library
  • Enh #1906: Add support for B2 application keys

Details

  • Bugfix #1854: Allow saving files/dirs on different fs with --one-file-system

    Restic now allows saving files/dirs on a different file system in a subdir correctly even when --one-file-system is specified.

    The first thing the restic archiver code does is to build a tree of the target files/directories. If it detects that a parent directory is already included (e.g. restic backup /foo /foo/bar/baz), it'll ignore the latter argument.

    Without --one-file-system, that's perfectly valid: If /foo is to be archived, it will include /foo/bar/baz. But with --one-file-system, /foo/bar/baz may reside on a different file system, so it won't be included with /foo.

    https://github.com/restic/restic/issues/1854 https://github.com/restic/restic/pull/1855

  • Bugfix #1861: Fix case-insensitive search with restic find

    We've fixed the behavior for restic find -i PATTERN, which was broken in v0.9.1.

    https://github.com/restic/restic/pull/1861

  • Bugfix #1870: Fix restore with --include

    We fixed a bug which prevented restic to restore files with an include filter.

    https://github.com/restic/restic/issues/1870 https://github.com/restic/restic/pull/1900

  • Bugfix #1880: Use --cache-dir argument for check command

    check command now uses a temporary sub-directory of the specified directory if set using the --cache-dir argument. If not set, the cache directory is created in the default temporary directory as before. In either case a temporary cache is used to ensure the actual repository is checked (rather than a local copy).

    The --cache-dir argument was not used by the check command, instead a cache directory was created in the temporary directory.

    https://github.com/restic/restic/issues/1880

  • Bugfix #1893: Return error when exclude file cannot be read

    A bug was found: when multiple exclude files were passed to restic and one of them could not be read, an error was printed and restic continued, ignoring even the existing exclude files. Now, an error message is printed and restic aborts when an exclude file cannot be read.

    https://github.com/restic/restic/issues/1893

  • Enhancement #874: Add stats command to get information about a repository

    https://github.com/restic/restic/issues/874 https://github.com/restic/restic/pull/1729

  • Enhancement #1477: S3 backend: accept AWS_SESSION_TOKEN

    Before, it was not possible to use s3 backend with AWS temporary security credentials(with AWS_SESSION_TOKEN). This change gives higher priority to credentials.EnvAWS credentials provider.

    https://github.com/restic/restic/issues/1477 https://github.com/restic/restic/pull/1479 https://github.com/restic/restic/pull/1647

  • Enhancement #1772: Add restore --verify to verify restored file content

    Restore will print error message if restored file content does not match expected SHA256 checksum

    https://github.com/restic/restic/pull/1772

  • Enhancement #1853: Add JSON output support to restic key list

    This PR enables users to get the output of restic key list in JSON in addition to the existing table format.

    https://github.com/restic/restic/pull/1853

  • Enhancement #1901: Update the Backblaze B2 library

    We've updated the library we're using for accessing the Backblaze B2 service to 0.5.0 to include support for upcoming so-called "application keys". With this feature, you can create access credentials for B2 which are restricted to e.g. a single bucket or even a sub-directory of a bucket.

    https://github.com/restic/restic/pull/1901 https://github.com/kurin/blazer

  • Enhancement #1906: Add support for B2 application keys

    Restic can now use so-called "application keys" which can be created in the B2 dashboard and were only introduced recently. In contrast to the "master key", such keys can be restricted to a specific bucket and/or path.

    https://github.com/restic/restic/issues/1906 https://github.com/restic/restic/pull/1914

Changelog for restic 0.9.1 (2018-06-10)

The following sections list the changes in restic 0.9.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1801: Add limiting bandwidth to the rclone backend
  • Fix #1822: Allow uploading large files to MS Azure
  • Fix #1825: Correct find to not skip snapshots
  • Fix #1833: Fix caching files on error
  • Fix #1834: Resolve deadlock

Details

  • Bugfix #1801: Add limiting bandwidth to the rclone backend

    The rclone backend did not respect --limit-upload or --limit-download. Oftentimes it's not necessary to use this, as the limiting in rclone itself should be used because it gives much better results, but in case a remote instance of rclone is used (e.g. called via ssh), it is still relevant to limit the bandwidth from restic to rclone.

    https://github.com/restic/restic/issues/1801

  • Bugfix #1822: Allow uploading large files to MS Azure

    Sometimes, restic creates files to be uploaded to the repository which are quite large, e.g. when saving directories with many entries or very large files. The MS Azure API does not allow uploading files larger that 256MiB directly, rather restic needs to upload them in blocks of 100MiB. This is now implemented.

    https://github.com/restic/restic/issues/1822

  • Bugfix #1825: Correct find to not skip snapshots

    Under certain circumstances, the find command was found to skip snapshots containing directories with files to look for when the directories haven't been modified at all, and were already printed as part of a different snapshot. This is now corrected.

    In addition, we've switched to our own matching/pattern implementation, so now things like restic find "/home/user/foo/**/main.go" are possible.

    https://github.com/restic/restic/issues/1825 https://github.com/restic/restic/issues/1823

  • Bugfix #1833: Fix caching files on error

    During check it may happen that different threads access the same file in the backend, which is then downloaded into the cache only once. When that fails, only the thread which is responsible for downloading the file signals the correct error. The other threads just assume that the file has been downloaded successfully and then get an error when they try to access the cached file.

    https://github.com/restic/restic/issues/1833

  • Bugfix #1834: Resolve deadlock

    When the "scanning" process restic runs to find out how much data there is does not finish before the backup itself is done, restic stops doing anything. This is resolved now.

    https://github.com/restic/restic/issues/1834 https://github.com/restic/restic/pull/1835

Changelog for restic 0.9.0 (2018-05-21)

The following sections list the changes in restic 0.9.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1608: Respect time stamp for new backup when reading from stdin
  • Fix #1652: Ignore/remove invalid lock files
  • Fix #1684: Fix backend tests for rest-server
  • Fix #1730: Ignore sockets for restore
  • Fix #1745: Correctly parse the argument to --tls-client-cert
  • Enh #549: Rework archiver code
  • Enh #827: Add --new-password-file flag for non-interactive password changes
  • Enh #1433: Support UTF-16 encoding and process Byte Order Mark
  • Enh #1477: Accept AWS_SESSION_TOKEN for the s3 backend
  • Enh #1552: Use Google Application Default credentials
  • Enh #1561: Allow using rclone to access other services
  • Enh #1648: Ignore AWS permission denied error when creating a repository
  • Enh #1649: Add illumos/Solaris support
  • Enh #1665: Improve cache handling for restic check
  • Enh #1709: Improve messages restic check prints
  • Enh #1721: Add cache command to list cache dirs
  • Enh #1735: Allow keeping a time range of snaphots
  • Enh #1758: Allow saving OneDrive folders in Windows
  • Enh #1782: Use default AWS credentials chain for S3 backend

Details

Changelog for restic 0.8.3 (2018-02-26)

The following sections list the changes in restic 0.8.3 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1633: Fixed unexpected 'pack file cannot be listed' error
  • Fix #1638: Handle errors listing files in the backend
  • Fix #1641: Ignore files with invalid names in the repo
  • Enh #1497: Add --read-data-subset flag to check command
  • Enh #1560: Retry all repository file download errors
  • Enh #1623: Don't check for presence of files in the backend before writing
  • Enh #1634: Upgrade B2 client library, reduce HTTP requests

Details

  • Bugfix #1633: Fixed unexpected 'pack file cannot be listed' error

    Due to a regression introduced in 0.8.2, the rebuild-index and prune commands failed to read pack files with size of 587, 588, 589 or 590 bytes.

    https://github.com/restic/restic/issues/1633 https://github.com/restic/restic/pull/1635

  • Bugfix #1638: Handle errors listing files in the backend

    A user reported in the forum that restic completes a backup although a concurrent prune operation was running. A few error messages were printed, but the backup was attempted and completed successfully. No error code was returned.

    This should not happen: The repository is exclusively locked during prune, so when restic backup is run in parallel, it should abort and return an error code instead.

    It was found that the bug was in the code introduced only recently, which retries a List() operation on the backend should that fail. It is now corrected.

    https://github.com/restic/restic/pull/1638 https://forum.restic.net/t/restic-backup-returns-0-exit-code-when-already-locked/484

  • Bugfix #1641: Ignore files with invalid names in the repo

    The release 0.8.2 introduced a bug: when restic encounters files in the repo which do not have a valid name, it tries to load a file with a name of lots of zeroes instead of ignoring it. This is now resolved, invalid file names are just ignored.

    https://github.com/restic/restic/issues/1641 https://github.com/restic/restic/pull/1643 https://forum.restic.net/t/help-fixing-repo-no-such-file/485/3

  • Enhancement #1497: Add --read-data-subset flag to check command

    This change introduces ability to check integrity of a subset of repository data packs. This can be used to spread integrity check of larger repositories over a period of time.

    https://github.com/restic/restic/issues/1497 https://github.com/restic/restic/pull/1556

  • Enhancement #1560: Retry all repository file download errors

    Restic will now retry failed downloads, similar to other operations.

    https://github.com/restic/restic/pull/1560

  • Enhancement #1623: Don't check for presence of files in the backend before writing

    Before, all backend implementations were required to return an error if the file that is to be written already exists in the backend. For most backends, that means making a request (e.g. via HTTP) and returning an error when the file already exists.

    This is not accurate, the file could have been created between the HTTP request testing for it, and when writing starts, so we've relaxed this requeriment, which saves one additional HTTP request per newly added file.

    https://github.com/restic/restic/pull/1623

  • Enhancement #1634: Upgrade B2 client library, reduce HTTP requests

    We've upgraded the B2 client library restic uses to access BackBlaze B2. This reduces the number of HTTP requests needed to upload a new file from two to one, which should improve throughput to B2.

    https://github.com/restic/restic/pull/1634

Changelog for restic 0.8.2 (2018-02-17)

The following sections list the changes in restic 0.8.2 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1506: Limit bandwith at the http.RoundTripper for HTTP based backends
  • Fix #1512: Restore directory permissions as the last step
  • Fix #1528: Correctly create missing subdirs in data/
  • Fix #1589: Complete intermediate index upload
  • Fix #1590: Strip spaces for lines read via --files-from
  • Fix #1594: Google Cloud Storage: Use generic HTTP transport
  • Fix #1595: Backup: Remove bandwidth display
  • Enh #1507: Only reload snapshots once per minute for fuse mount
  • Enh #1522: Add support for TLS client certificate authentication
  • Enh #1538: Reduce memory allocations for querying the index
  • Enh #1541: Reduce number of remote requests during repository check
  • Enh #1549: Speed up querying across indices and scanning existing files
  • Enh #1554: Fuse/mount: Correctly handle EOF, add template option
  • Enh #1564: Don't terminate ssh on SIGINT
  • Enh #1567: Reduce number of backend requests for rebuild-index and prune
  • Enh #1579: Retry Backend.List() in case of errors
  • Enh #1584: Limit index file size

Details

Changelog for restic 0.8.1 (2017-12-27)

The following sections list the changes in restic 0.8.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1454: Correct cache dir location for Windows and Darwin
  • Fix #1457: Improve s3 backend with DigitalOcean Spaces
  • Fix #1459: Disable handling SIGPIPE
  • Chg #1452: Do not save atime by default
  • Enh #11: Add the diff command
  • Enh #1436: Add code to detect old cache directories
  • Enh #1439: Improve cancellation logic

Details

Changelog for restic 0.8.0 (2017-11-26)

The following sections list the changes in restic 0.8.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Sec #1445: Prevent writing outside the target directory during restore
  • Fix #1256: Re-enable workaround for S3 backend
  • Fix #1291: Reuse backend TCP connections to BackBlaze B2
  • Fix #1317: Run prune when forget --prune is called with just snapshot IDs
  • Fix #1437: Remove implicit path /restic for the s3 backend
  • Enh #448: Sftp backend prompts for password
  • Enh #510: Add dump command
  • Enh #1040: Add local metadata cache
  • Enh #1102: Add subdirectory ids to fuse mount
  • Enh #1114: Add --cacert to specify TLS certificates to check against
  • Enh #1216: Add upload/download limiting
  • Enh #1249: Add latest symlink in fuse mount
  • Enh #1269: Add --compact to forget command
  • Enh #1271: Cache results for excludes for backup
  • Enh #1274: Add generate command, replaces manpage and autocomplete
  • Enh #1281: Google Cloud Storage backend needs less permissions
  • Enh #1319: Make check print no errors found explicitly
  • Enh #1353: Retry failed backend requests
  • Enh #1367: Allow comments in files read from via --file-from

Details

Changelog for restic 0.7.3 (2017-09-20)

The following sections list the changes in restic 0.7.3 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1246: List all files stored in Google Cloud Storage

Details

Changelog for restic 0.7.2 (2017-09-13)

The following sections list the changes in restic 0.7.2 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1164: Make the key remove command behave as documented
  • Fix #1167: Do not create a local repo unless init is used
  • Fix #1191: Make sure to write profiling files on interrupt
  • Enh #317: Add --exclude-caches and --exclude-if-present
  • Enh #697: Automatically generate man pages for all restic commands
  • Enh #1044: Improve restore, do not traverse/load excluded directories
  • Enh #1061: Add Dockerfile and official Docker image
  • Enh #1126: Use the standard Go git repository layout, use dep for vendoring
  • Enh #1132: Make key command always prompt for a password
  • Enh #1134: Add support for storing backups on Google Cloud Storage
  • Enh #1144: Properly report errors when reading files with exclude patterns
  • Enh #1149: Add support for storing backups on Microsoft Azure Blob Storage
  • Enh #1179: Resolve name conflicts, append a counter
  • Enh #1196: Add --group-by to forget command for flexible grouping
  • Enh #1203: Print stats on all BSD systems when SIGINFO (ctrl+t) is received
  • Enh #1205: Allow specifying time/date for a backup with --time
  • Enh #1218: Add --compact to snapshots command

Details

Changelog for restic 0.7.1 (2017-07-22)

The following sections list the changes in restic 0.7.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #1115: Fix prune, only include existing files in indexes
  • Enh #1055: Create subdirs below data/ for local/sftp backends
  • Enh #1067: Allow loading credentials for s3 from IAM
  • Enh #1073: Add migrate cmd to migrate from s3legacy to default layout
  • Enh #1080: Ignore chmod() errors on filesystems which do not support it
  • Enh #1081: Clarify semantic for --tag for the forget command
  • Enh #1082: Print stats on SIGINFO on Darwin and FreeBSD (ctrl+t)

Details

Changelog for restic 0.7.0 (2017-07-01)

The following sections list the changes in restic 0.7.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Fix #965: Switch to default repo layout for the s3 backend
  • Fix #1013: Switch back to using the high-level minio-go API for s3
  • Enh #512: Add Backblaze B2 backend
  • Enh #636: Add dirs tags and hosts to fuse mount
  • Enh #975: Add new backend for OpenStack Swift
  • Enh #989: Improve performance of the find command
  • Enh #998: Improve performance of the fuse mount
  • Enh #1021: Detect invalid backend name and print error
  • Enh #1029: Remove invalid pack files when prune is run

Details

Changelog for restic 0.6.1 (2017-06-01)

The following sections list the changes in restic 0.6.1 relevant to restic users. The changes are ordered by importance.

Summary

  • Enh #974: Remove regular status reports
  • Enh #981: Remove temporary path from binary in build.go
  • Enh #985: Allow multiple parallel idle HTTP connections

Details

  • Enhancement #974: Remove regular status reports

    Regular status report: We've removed the status report that was printed every 10 seconds when restic is run non-interactively. You can still force reporting the current status by sending a USR1 signal to the process.

    https://github.com/restic/restic/pull/974

  • Enhancement #981: Remove temporary path from binary in build.go

    The build.go now strips the temporary directory used for compilation from the binary. This is the first step in enabling reproducible builds.

    https://github.com/restic/restic/pull/981

  • Enhancement #985: Allow multiple parallel idle HTTP connections

    Backends based on HTTP now allow several idle connections in parallel. This is especially important for the REST backend, which (when used with a local server) may create a lot connections and exhaust available ports quickly.

    https://github.com/restic/restic/issues/985 https://github.com/restic/restic/pull/986

Changelog for restic 0.6.0 (2017-05-29)

The following sections list the changes in restic 0.6.0 relevant to restic users. The changes are ordered by importance.

Summary

  • Enh #957: Make forget consistent
  • Enh #962: Improve memory and runtime for the s3 backend
  • Enh #966: Unify repository layout for all backends

Details