Commit Graph

268 Commits

Author SHA1 Message Date
denis.uzvik 5873ab4031 Ignore s3 AccessDenied error, during creation of repository 2018-03-02 10:47:20 +02:00
Alexander Neumann c323f73bf9 Ignore files in the repo with invalid names
Closes #1641
2018-02-26 20:53:38 +01:00
Alexander Neumann aef5e03731 Merge pull request #1638 from restic/fix-list-retry
backend/retry: return worker function error and abort
2018-02-25 21:20:08 +01:00
Alexander Neumann dc1154c8ad Merge pull request #1556 from ifedorenko/check-subset
Add --read-data-subset flag to check command
2018-02-24 14:53:20 +01:00
Alexander Neumann 93210614f4 backend/retry: return worker function error and abort
This is a bug fix: Before, when the worker function fn in List() of the
RetryBackend returned an error, the operation is retried with the next
file. This is not consistent with the documentation, the intention was
that when fn returns an error, this is passed on to the caller and the
List() operation is aborted. Only errors happening on the underlying
backend are retried.

The error leads to restic ignoring exclusive locks that are present in
the repo, so it may happen that a new backup is written which references
data that is going to be removed by a concurrently running `prune`
operation.

The bug was reported by a user here:
https://forum.restic.net/t/restic-backup-returns-0-exit-code-when-already-locked/484
2018-02-24 13:26:13 +01:00
Toby Burress 08a5281bd4 Incorporate PR review comments. 2018-02-22 17:37:10 +00:00
Toby Burress cdb48a8970 Add tests for the eager-header refactor. 2018-02-22 01:14:04 +00:00
Toby Burress 4fd5f0b8a9 Refactor the eager-header reads for readability.
This pulls the header reads into a function that works in terms of the
number of records requested.  This preserves the existing logic of
initially reading 15 records and then falling back if that fails.

In the event of a header with more than 15 records, it will read all
records, including the already-seen final 15 records.
2018-02-22 00:45:40 +00:00
Igor Fedorenko 19e7803ac6 Fixed unexpected 'pack file cannot be listed' error
Fixes #1633

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-02-20 21:28:57 -05:00
Igor Fedorenko 07d080830e Add --read-data-subset flag to check command
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-02-18 23:31:27 -05:00
Alexander Neumann be02008025 Merge pull request #1611 from qbit/master
On OpenBSD only root can set sticky bit
2018-02-18 12:57:54 +01:00
Alexander Neumann 29da86b473 Merge pull request #1623 from restic/backend-relax-restrictions
backend: Relax requirement for new files
2018-02-18 12:56:52 +01:00
Alexander Neumann b5062959c8 backend: Relax requirement for new files
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. In addition, apart from
the `config` file in the repo, all other file names have pseudo-random
names with a very very low probability of a collision. And even if a
file name is written again, the way the restic repo is structured this
just means that the same content is placed there again. Which is not a
problem, just not very efficient.

So, this commit relaxes the requirement to return an error when the file
in the backend already exists, which allows reducing the number of API
requests and thereby the latency for remote backends.
2018-02-17 22:39:18 +01:00
Igor Fedorenko ab040d8811 Introduced repository.DownloadAndHash helper
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-02-16 21:13:11 -05:00
Igor Fedorenko d58ae43317 Reworked Backend.Load API to retry errors during ongoing download
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-02-16 21:12:14 -05:00
Aaron Bieber 99d88ad297
Disable the 'testSticky' test on OpenBSD. Only root can set sticky. 2018-02-11 07:46:31 -07:00
Alexander Neumann 514f1b8917 Relax timeout backend test 2018-02-10 12:53:38 +01:00
Igor Fedorenko aa333f4d49 Implement RetryBackend.List()
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-01-29 22:14:12 -05:00
Alexander Neumann 2369da158f Merge pull request #1592 from ncw/helpful-tests
Make backend tests more helpful
2018-01-28 10:09:35 +01:00
Nick Craig-Wood fb62da1748 Make backend tests more helpful
* In TestList check that backend is empty first
  * Improve error message in TestBackend
2018-01-27 21:36:35 +00:00
Alexander Neumann 5dc8d3588d GS: Use generic http transport
During the development of #1524 I discovered that the Google Cloud
Storage backend did not yet use the HTTP transport, so things such as
bandwidth limiting did not work. This commit does the necessary magic to
make the GS library use our HTTP transport.
2018-01-27 20:12:34 +01:00
Alexander Neumann c34db983d8 Read TLS client cert and key from the same file 2018-01-27 14:02:01 +01:00
Bryce Chidester e805b968b1 Support for TLS client certificate authentication
This adds --tls-client-cert and --tls-client-key parameters and enables use
of that certificate/key pair when connecting to https servers.
2018-01-27 13:18:22 +01:00
Alexander Neumann f99c95c766 archiver: Fix intermediate index upload
A user discovered[1] that when the backup finishes during the upload of
an intermediate index, the upload is cancelled and the index never fully
saved, but the snapshot is saved and the backup finalizes without an
error. This lead to a situation where a snapshot references data that is
contained in the repo, but not referenced in any index, leading to
strange error messages.

This commit uses a dedicated context to signal the intermediate index
uploading routine to terminate after the last index has been uploaded.
This way, an upload running when the backup finishes is completed before
the routine terminates and the snapshot is saved.

[1] https://forum.restic.net/t/error-loading-tree-check-prune-and-forget-gives-error-b2-backend/406
2018-01-26 22:01:07 +01:00
Alexander Neumann cccb2fc7e7 Merge pull request #1583 from restic/close-open-backend-files
Close backend files in case of errors
2018-01-26 21:57:28 +01:00
Alexander Neumann ff3de66ddf Merge pull request #1582 from restic/optimize-debug-log
Optimize debug logs
2018-01-26 21:57:18 +01:00
Alexander Neumann e11a183578 Merge pull request #1588 from restic/fix-sftp-without-tty
sftp: Allow running ssh without a tty
2018-01-26 21:56:41 +01:00
Alexander Neumann 6eb2d76435 index: Lower parallel load to 4 2018-01-26 21:10:38 +01:00
Alexander Neumann f63c7048c7 index: Limit index files to 3000 pack files 2018-01-26 21:07:16 +01:00
Alexander Neumann ca3c566a99 index: Check structure after saving a new index 2018-01-26 21:07:16 +01:00
Alexander Neumann 7719cf88d9 b2: Check timeout 2018-01-26 21:07:05 +01:00
Alexander Neumann 00e905ebe6 sftp: Allow running ssh without a tty 2018-01-26 19:21:14 +01:00
Alexander Neumann 909d9273cc Close backend files in case of errors 2018-01-25 21:05:57 +01:00
Alexander Neumann 663c57ab4d debug: Remove manual Str() call Log() 2018-01-25 20:49:41 +01:00
Alexander Neumann ed99f53786 debug: Auto-shorten IDs passed as parameters 2018-01-25 20:49:26 +01:00
Igor Fedorenko abc4027083 Use errors.Cause in backend TestListCancel
Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-01-25 08:53:50 -05:00
Alexander Neumann 9c55e8d69c Merge pull request #1549 from MJDSys/more_index_lookup_avoids
More optimizations to avoid calling Index.Lookup()
2018-01-24 20:53:30 +01:00
Alexander Neumann be205563be Merge pull request #1575 from ifedorenko/1567_optimize-repository-ListPack
Optimize Repository.ListPack()
2018-01-24 20:01:15 +01:00
Alexander Neumann fc6c341b26 Merge pull request #1574 from ifedorenko/1567_optimize-pack-readHeader
Optimize pack readHeader() implementation
2018-01-24 19:54:14 +01:00
Alexander Neumann f86c141b83 Merge pull request #1577 from EdwardBetts/patch-1
Correct a spelling mistake.
2018-01-24 19:44:49 +01:00
Edward Betts b5c23695c9
Correct a spelling mistake. 2018-01-24 12:09:41 +00:00
Igor Fedorenko 0084e42cb6 Optimize Repository.ListPack()
Use pack file size returned by Backend.List() to avoid extra per-pack
Backend.Stat() requests

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-01-23 22:39:51 -05:00
Matthew Dawson fe33c05a20
debug/log: Add benchmarks for calling the logging function
Add some benchmarks for calling Log, both with a static string
along with calling the ID.Str and ID.String functions.
2018-01-23 22:30:00 -05:00
Matthew Dawson 3789e55e20
repostiory/index: Remove logging from Lookup function.
The logging in these functions double the time they take to execute.
However, it is only really useful on failures, which are better
reported by the calling functions.

benchmark                                            old ns/op     new ns/op     delta
BenchmarkMasterIndexLookupSingleIndex-6              897           395           -55.96%
BenchmarkMasterIndexLookupMultipleIndex-6            2001          1090          -45.53%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       492           215           -56.30%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     1649          912           -44.69%

benchmark                                            old allocs     new allocs     delta
BenchmarkMasterIndexLookupSingleIndex-6              9              1              -88.89%
BenchmarkMasterIndexLookupMultipleIndex-6            19             1              -94.74%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       6              0              -100.00%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     16             0              -100.00%

benchmark                                            old bytes     new bytes     delta
BenchmarkMasterIndexLookupSingleIndex-6              160           96            -40.00%
BenchmarkMasterIndexLookupMultipleIndex-6            240           96            -60.00%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       48            0             -100.00%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     128           0             -100.00%
2018-01-23 22:28:38 -05:00
Matthew Dawson 3a16148447
archiver/archiver: Use Index.Has() instead of Index.Lookup() in isKnownBlob
Index.Has() is a faster then Index.Lookup() for checking if a blob exists
in the index.  As the returned data is never used, this avoids a ton
of allocations.
2018-01-23 22:26:10 -05:00
Matthew Dawson df2c03a6a4
repository/master_index: Optimize Index.Lookup()
When looking up a blob in the master index, with several
indexes present in the master index, a significant amount of time
is spent generating errors for each failed lookup.  However, these
errors are often used to check if a blob is present, but the contents
are not inspected making the overhead of the error not useful.

Instead, change Index.Lookup (and Index.LookupSize) to instead return
a boolean denoting if the blob was found instead of an error.  Also change
all the calls to these functions to handle the new function signature.

benchmark                                            old ns/op     new ns/op     delta
BenchmarkMasterIndexLookupSingleIndex-6              820           897           +9.39%
BenchmarkMasterIndexLookupMultipleIndex-6            12821         2001          -84.39%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       5378          492           -90.85%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     17026         1649          -90.31%

benchmark                                            old allocs     new allocs     delta
BenchmarkMasterIndexLookupSingleIndex-6              9              9              +0.00%
BenchmarkMasterIndexLookupMultipleIndex-6            59             19             -67.80%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       22             6              -72.73%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     72             16             -77.78%

benchmark                                            old bytes     new bytes     delta
BenchmarkMasterIndexLookupSingleIndex-6              160           160           +0.00%
BenchmarkMasterIndexLookupMultipleIndex-6            3200          240           -92.50%
BenchmarkMasterIndexLookupSingleIndexUnknown-6       1232          48            -96.10%
BenchmarkMasterIndexLookupMultipleIndexUnknown-6     4272          128           -97.00%
2018-01-23 22:25:56 -05:00
Matthew Dawson ebce4b2581
repository/index: Speed up benchmarks and tests
When setting up the index used for benchmarking, use math/rand instead of
crypto/rand since the generated ids don't need to be evenly distributed,
and not be secure against guessing.  As such, use a different random id
function (only available during tests) that uses math/rand instead.
2018-01-23 22:21:05 -05:00
Igor Fedorenko 953f3d55ee Optimize pack readHeader() implementation
Load pack header length and 15 header entries with single backend
request. This eliminates separate header Load() request for most pack
files and significantly improves index.New() performance.

Signed-off-by: Igor Fedorenko <igor@ifedorenko.com>
2018-01-23 22:02:25 -05:00
Alexander Neumann 7e6bfdae79 backend/rest: Implement REST API v2 2018-01-23 23:15:26 +01:00
Alexander Neumann 59782e347c repository: Fix repack test
This reduces the chance of duplicate blobs, otherwise the tests fail
(make the contents of a blob depend on a pseudo-random number instead of
the size, sizes may be duplicate).
2018-01-23 23:14:05 +01:00