mirror of
https://github.com/borgbackup/borg.git
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165 lines
7 KiB
ReStructuredText
165 lines
7 KiB
ReStructuredText
.. _important_notes:
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Important notes 2.x
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===================
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This section provides information about security and corruption issues.
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(nothing to see here yet)
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.. _changelog:
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Change Log 2.x
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==============
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Version 2.0.0a2 (2022-06-26)
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----------------------------
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Please note:
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This is an alpha release, only for testing - do not use for production repos.
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Compatibility notes:
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- this is a major "breaking" release that is not compatible with existing repos.
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We tried to put all the necessary "breaking" changes into this release, so we
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hopefully do not need another breaking release in the near future. The changes
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were necessary for improved security, improved speed, unblocking future
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improvements, getting rid of legacy crap / design limitations, having less and
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simpler code to maintain.
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You can use "borg transfer" to transfer archives from borg 1.1/1.2 repos to
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a new borg 2.0 repo, but it will need some time and space.
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- command line syntax was changed, scripts and wrappers will need changes:
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- you will usually either export BORG_REPO=<MYREPO> into your environment or
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call borg like: "borg -r <MYREPO> <COMMAND>".
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in the docs, we usually omit "-r ..." for brevity.
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- the scp-style REPO syntax was removed, please use ssh://..., #6697
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- differently than with borg 1.x you ONLY give the repo there, never a ::archive.
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- the archive name is either given as a positional parameter, like:
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- borg create myarchive2 /some/path
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- borg diff myarchive1 myarchive2
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- or, if the command makes sense for an arbitrary amount of archives, archives
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can be selected using a glob pattern, like:
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- borg delete -a 'myarchive*'
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- borg recreate -a 'myarchive*'
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- some borg 1.x commands that supported working on a repo AND on an archive
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were split into 2 commands, some others were renamed:
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- borg 2 repo commands:
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- borg rcreate # "repo create", was: borg init
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- borg rlist # "repo list"
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- borg rinfo # "repo info"
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- borg rdelete # "repo delete"
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- borg 2 archive commands:
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- borg create ARCHIVE ...
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- borg list ARCHIVE
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- borg extract ARCHIVE ...
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- borg diff ARCH1 ARCH2
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- borg rename OLDNAME NEWNAME
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- borg info -a ARCH_GLOB
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- borg delete -a ARCH_GLOB
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- borg recreate -a ARCH_GLOB ...
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- borg mount -a ARCH_GLOB mountpoint ...
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For more details, please consult the docs or --help option output.
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Changes:
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- split repo and archive name into separate args, #948
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- use -r or --repo or BORG_REPO env var to give the repository
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- use --other-repo or BORG_OTHER_REPO to give another repo (e.g. borg transfer)
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- use positional argument for archive name or `-a ARCH_GLOB`
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- remove support for scp-style repo specification, use ssh://...
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- simplify stats output: repo ops -> repo stats, archive ops -> archive stats
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- repository index: add payload size (==csize) and flags to NSIndex entries
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- repository index: set/query flags, iteration over flagged items (NSIndex)
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- repository: sync write file in get_fd
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- stats: deduplicated size now, was deduplicated compressed size in borg 1.x
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- remove csize support at most places in the code (chunks index, stats, get_size,
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Item.chunks)
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- replace problematic/ugly hardlink_master approach of borg 1.x by:
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- symmetric hlid (all hardlinks pointing to same inode have same hlid)
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- all archived hardlinked regular files have a chunks list
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- borg rcreate --other-repo=OTHER_REPO: reuse key material from OTHER_REPO, #6554.
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This is useful if you want to use borg transfer to transfer archives from an
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existing borg 1.1/1.2 repo. If the chunker secret and the id key and algorithm
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stay the same, the deduplication will also work between past and future backups.
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- borg transfer:
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- efficiently copy archives from a borg 1.1/1.2 repo to a new repo.
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uses deduplication and does not decompress/recompress file content data.
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- does some cleanups / fixes / conversions:
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- disallow None value for .user/group/chunks/chunks_healthy
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- cleanup msgpack related str/bytes mess, use new msgpack spec, #968
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- obfuscation: fix byte order for size, #6701
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- compression: use the 2 bytes for type and level, #6698
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- use version 2 for new archives
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- convert timestamps int/bigint -> msgpack.Timestamp, see #2323
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- all hardlinks have chunks, maybe chunks_healty, hlid
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- remove the zlib type bytes hack
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- make sure items with chunks have precomputed size
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- removes the csize element from the tuples in the Item.chunks list
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- clean item of attic 0.13 'acl' bug remnants
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- crypto: see 1.3.0a1 log entry
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- removed "borg upgrade" command (not needed any more)
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- compact: removed --cleanup-commits option
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- docs: fixed quickstart and usage docs with new cli command syntax
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- docs: removed the parts talking about potential AES-CTR mode issues
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(we will not use that any more).
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Version 1.3.0a1 (2022-04-15)
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----------------------------
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Although this was released as 1.3.0a1, it can be also seen as 2.0.0a1 as it was
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later decided to do breaking changes and thus the major release number had to
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be increased (thus, there will not be a 1.3.0 release, but 2.0.0).
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New features:
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- init: new --encryption=(repokey|keyfile)-[blake2-](aes-ocb|chacha20-poly1305)
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- New, better, faster crypto (see encryption-aead diagram in the docs), #6463.
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- New AEAD cipher suites: AES-OCB and CHACHA20-POLY1305.
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- Session keys are derived via HKDF from random session id and master key.
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- Nonces/MessageIVs are counters starting from 0 for each session.
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- AAD: chunk id, key type, messageIV, sessionID are now authenticated also.
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- Solves the potential AES-CTR mode counter management issues of the legacy crypto.
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- init: --key-algorithm=argon2 (new default KDF, older pbkdf2 also still available)
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borg key change-passphrase / change-location keeps the key algorithm unchanged.
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- key change-algorithm: to upgrade existing keys to argon2 or downgrade to pbkdf2.
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We recommend you to upgrade unless you have to keep the key compatible with older versions of borg.
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- key change-location: usable for repokey <-> keyfile location change
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- benchmark cpu: display benchmarks of cpu bound stuff
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- export-tar: new --tar-format=PAX (default: GNU)
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- import-tar/export-tar: can use PAX format for ctime and atime support
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- import-tar/export-tar: --tar-format=BORG: roundtrip ALL item metadata, #5830
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- repository: create and use version 2 repos only for now
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- repository: implement PUT2: header crc32, overall xxh64, #1704
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Other changes:
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- require python >= 3.9, #6315
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- simplify libs setup, #6482
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- unbundle most bundled 3rd party code, use libs, #6316
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- use libdeflate.crc32 (Linux and all others) or zlib.crc32 (macOS)
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- repository: code cleanups / simplifications
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- internal crypto api: speedups / cleanups / refactorings / modernisation
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- remove "borg upgrade" support for "attic backup" repos
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- remove PassphraseKey code and borg key migrate-to-repokey command
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- OpenBSD: build borg with OpenSSL (not: LibreSSL), #6474
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- remove support for LibreSSL, #6474
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- remove support for OpenSSL < 1.1.1
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