Commit Graph

67 Commits

Author SHA1 Message Date
greatroar c892c0bab9 internal/restic: Don't allocate in Tree.Insert
name         old time/op    new time/op    delta
BuildTree-8    34.6µs ± 4%     7.0µs ± 3%  -79.68%  (p=0.000 n=18+19)

name         old alloc/op   new alloc/op   delta
BuildTree-8    34.0kB ± 0%     0.9kB ± 0%  -97.37%  (p=0.000 n=20+20)

name         old allocs/op  new allocs/op  delta
BuildTree-8       108 ± 0%         1 ± 0%  -99.07%  (p=0.000 n=20+20)
2021-09-26 18:08:48 +02:00
Alexander Neumann 0e5f2fff71
Merge pull request #3243 from restic/fix-scanner-overlap
backup: Fix total size for overlapping targets
2021-01-30 21:17:21 +01:00
Alexander Neumann 200f09522d Add more error checks 2021-01-30 20:02:37 +01:00
Alexander Neumann 81211750ba archiver/tree: Introduce functions Leaf() and NodeNames() 2021-01-29 11:11:28 +01:00
greatroar 6bd8a2faaa backup: Add --ignore-ctime option and document change detection 2021-01-28 23:42:10 +01:00
Michael Eischer debc4a3a99 archiver: fix race condition during worker startup
When the tomb is created with a canceled context, then the workers
started via `t.Go` exist nearly immediately. Once for the first time all
started goroutines have been stopped, it is not allowed to issue further
calls to `t.Go`. This is a problem when the started goroutines exit
immediately, as for example the first goroutine might already have
stopped before starting the second one, which is not allowed as once the
first goroutines has stopped no goroutines were running.

To fix this race condition the startup and main task of the archiver now
also run within a `t.Go` function. This also allows unifying the error
handling as it is no longer necessary to distinguish between errors
returned by the workers or the saveTree processing. The tomb now just
returns the first error encountered, which should also be the most
descriptive one.
2020-12-30 17:31:22 +01:00
Michael Eischer fc60b560ba archiver: Let saveTree report a canceled context as an error
If the context was canceled then saveTree might receive a treeID or not
depending on the timing. This could cause saveTree to incorrectly return
a nil treeID as valid. Fix this always returning an error when the
context was canceled in the meantime.
2020-12-28 21:06:47 +01:00
Michael Eischer 736e964317 archiver: Don't loose error if background context is canceled
A canceled background context lets the blob/tree/fileSavers exit
without reporting an error. The error handling previously replaced
a 'context canceled' error received by the main backup method with
the error reported by the savers. However, in case of a canceled
background context that error is nil, causing restic to loose the
error and save a snapshot with a nil tree.
2020-12-28 21:06:47 +01:00
Alexander Weiss aa7a5f19c2 Use BlobHandle in index methods 2020-11-22 20:41:12 +01:00
Quentin Lemaire ae441d3134
fix(backup): Switch tags cobra type to handle comma-separated list 2020-11-14 15:48:56 +00:00
Michael Eischer 50da20d93d Warn if backup failed to read tree blob 2020-10-09 22:36:27 +02:00
MichaelEischer 862ee4b2c9
Merge pull request #2970 from labkode/fopenskip
Skip fopen for file change check to avoid network penalty
2020-10-09 11:43:54 +02:00
Hugo Gonzalez Labrador 958dc6aafc Skip fopen for file change check to avoid network penalty 2020-10-09 10:53:28 +02:00
greatroar c4e2203e45 Check error in archiver before calling Select
The archiver first called the Select function for a path before checking
whether the Lstat on that path actually worked. The RejectFuncs in
exclude.go worked around this by checking whether they received a nil
os.FileInfo. Checking first is more obvious and requires less code.
2020-10-05 11:11:04 +02:00
Michael Eischer dc31529fc3 Unindent else block after if block ending with a return statement 2020-09-05 10:07:16 +02:00
Michael Eischer b25978a53c backup: Fix reporting of directory count in summary
Previously the directory stats were reported immediately after calling
`SaveDir`. However, as the latter method saves the tree asynchronously
the stats were still initialized to their nil value. The stats are now
reported via a callback similar to the one used for the fileSaver.
2020-08-27 22:43:51 +02:00
Alexander Weiss 9175795fdb Check contents in archiver
When backing up with a parent snapshot and the file is not changed, also
check if contents are still available in index.
2020-07-25 08:18:28 +02:00
Alexander Weiss 91906911b0 Fix non-intuitive repository behavior
- The SaveBlob method now checks for duplicates.
- Moves handling of pending blobs to MasterIndex.
  -> also cleans up pending index entries when they are saved in the index
  -> when using SaveBlob no need to care about index any longer
- Always check for full index and save it when storing packs.
  -> removes the need of an index uploader
  -> also removes the verbose "uploaded intermediate index" messages
- The Flush method now also saves the index
- Fix race condition when checking and saving full/non-finalized indexes
2020-06-11 13:05:23 +02:00
Martin Michlmayr 5cc1760fdf
Fix typos 2020-05-16 14:05:26 +08:00
Alexander Neumann 95da6c1c1d
Merge pull request #2589 from greatroar/no-stable-sort
Replace sort.Stable by sort.Strings
2020-03-01 19:40:28 +01:00
greatroar 79b882e901 Merge duplicated readdir functionality
internal/archiver.readdir and internal/fs.ReadDir were unused.

internal/fs.ReadDirNames and internal/archiver.readdirnames were doing
nearly the same thing, except one sorted its output and opened with
fs.O_NOFOLLOW. Both were only used in internal/archiver.
2020-02-26 11:05:38 +01:00
greatroar 3a6feb0596 Replace sort.Stable by sort.Strings
Calling the slow, O(n lg² n) sort.Stable is equivalent to sort.Strings
for a slice of unique strings.
2020-02-18 19:41:06 +01:00
greatroar 2f8aa2ce30 Remove unused fs.FS from archiver.FileSaver 2020-02-18 10:39:14 +01:00
rawtaz d8da9c4401
Merge pull request #2577 from alrs/fix-internal-errs
internal: Fix code and test dropped errors
2020-02-12 23:41:54 +01:00
Lars Lehtonen 72734d59b5
internal/archiver: fix dropped error 2020-02-12 13:37:37 -08:00
Michael Eischer a135699397 Close file if file type has changed after initial stat 2020-02-11 21:09:47 +01:00
Alexander Neumann 919dd2ac84 Merge pull request #2252 from restic/fix-2249
Read fresh metadata for unmodified files
2019-04-25 09:15:50 +02:00
Courtney Bane 35b7607802 Don't check ctime when ignoring inode. 2019-04-24 20:53:08 -05:00
Alexander Neumann 389067fb8b Only use list of blobs for old node
Closes #2249
2019-04-24 15:07:26 +02:00
Courtney Bane b8c2544dcb Examine file ctime when checking if files have changed. 2019-04-23 21:54:35 -05:00
Alexander Neumann 65b476ead9 Fix gofmt 2019-03-16 13:29:05 +01:00
Heiko Bornholdt db8f5864fc Add --ignore-inode option to backup cmd
revised version of https://github.com/restic/restic/pull/2047
2019-03-10 21:24:29 +01:00
Andreas Skielboe b07bb3d8c3 Reject files excluded by name before calling lstat to improve scan speed
Adds a SelectByName method to the archive and scanner which only require
the filename as input, and can thus be run before calling lstat on the
file. Can speed up scanning significantly if a lot of filename excludes
are used.
2018-08-12 17:51:12 +02:00
Alexander Neumann adb682bc43 archiver: Don't open files with O_NONBLOCK
This is not necessary any more, we're doing an lstat() before opening
an item, so we already known it's a file and not a pipe.
2018-05-20 16:11:51 +02:00
Alexander Neumann 1e9744c9a4 archiver: Refuse to save an empty snapshot 2018-05-20 16:11:51 +02:00
Alexander Neumann 347a645450 Fix double error message 2018-05-15 11:03:33 +02:00
Alexander Neumann 60ea2435be Improve error message for readdir/readdirnames
As mentioned in the forum[1], restic does not include the dir name when
readdir/readdirnames fails.

[1] https://forum.restic.net/t/readdirnames-readdirent-no-such-file-or-directory/653
2018-05-13 10:34:50 +02:00
Alexander Neumann e43c9202a6 archiver: Make sure backend error is passed up 2018-05-12 23:55:59 +02:00
Alexander Neumann c5e75d1c98 archiver: Add test for early abort on unhandled error 2018-05-12 23:55:59 +02:00
Alexander Neumann 526956af35 archiver: Read files/dirs in order 2018-05-12 23:55:54 +02:00
Alexander Neumann 256104111d archiver: Clarify names 2018-05-12 23:55:54 +02:00
Alexander Neumann 21c83b1725 archiver: Add high-level documentation 2018-05-12 23:55:54 +02:00
Alexander Neumann 581c62ee72 archiver: Improve error handling
This commit changes how the worker goroutines for saving e.g. blobs
interact. Before, it was possible to get stuck sending an instruction to
archive a file or dir when no worker goroutines were available any more.
This commit introduces a `done` channel for each of the worker pools,
which is set to the channel returned by `tomb.Dying()`, so it is closed
when the first worker returned an error.
2018-05-12 23:55:54 +02:00
Alexander Neumann ca4af43c03 archiver: Return low-level errors
This commit changes the archiver so that low-level errors saving data to
the repo are returned to the caller (instead of being handled by the
error callback function). This correctly bubbles up errors like a full
temp file system and makes restic abort early and makes all other worker
goroutines exit.
2018-05-10 21:30:09 +02:00
Alexander Neumann 2218ecd049 archiver: Use lstat before open/fstat
The previous code tried to be as efficient as possible and only do a
single open() on an item to save, and then fstat() on the fd to find out
what the item is (file, dir, other). For normal files, it would then
start reading the data without opening the file again, so it could not
be exchanged for e.g. a symlink.

This behavior starts the watchdog on my machine when /dev is saved
with restic, and after a few seconds, the machine reboots.

This commit reverts the behavior to the strategy the old archiver code
used: run lstat(), then decide what to do. For normal files, open the
file and then run fstat() on the fd to verify it's still a normal file,
then start reading the data.

The downside is that for normal files we now do two stat() calls
(lstat+fstat) instead of only one. On the upside, this does not start
the watchdog. :)
2018-05-01 23:05:50 +02:00
Alexander Neumann c83c03ed63 archiver: Fix blocking on pipes 2018-04-30 15:34:58 +02:00
Alexander Neumann 4e34325035 archiver: Process dirs concurrently 2018-04-30 15:13:28 +02:00
Alexander Neumann 78bd591c7c archiver: Improve buffer pool 2018-04-30 15:13:28 +02:00
Alexander Neumann 400730afca archiver: Improve memory usage, tune buffer pool 2018-04-30 14:19:07 +02:00
Alexander Neumann f279731168 Add new archiver code 2018-04-25 14:42:45 +02:00