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65 Commits

Author SHA1 Message Date
Alexander Neumann 567de35df4 Save new packs in index atomically 
This commit fixes a situation reported by a user where two indexes
contained information about the same pack without overlap, e.g.:

Index 3e6a32 contained:

    {
      "id": "c02e3b",
      "blobs": [
        {
          "id": "8114b1",
          "type": "data",
          "offset": 0,
          "length": 530107
        }
      ]
    }

And index 62da5f contained:

    {
      "id": "c02e3b",
      "blobs": [
        {
          "id": "e344f8",
          "type": "data",
          "offset": 1975848,
          "length": 3426468
        },
        {
          "id": "939ed9",
          "type": "data",
          "offset": 530107,
          "length": 1445741
        }
      ]
    }

This commit adds all blobs in a pack in one atomic operation so that
intermediate such as these do not happen.
 2015-11-20 22:56:56 +01:00
Alexander Neumann 96061d2a2f Fix debug log message 2015-11-13 23:47:53 +01:00
Alexander Neumann 5776b8f01c remove ConvertIndex 2015-11-08 22:27:13 +01:00
Alexander Neumann 6c54d3fa82 index: also mark old index as final on decode 2015-11-08 22:21:29 +01:00
Alexander Neumann db41102bfa Finalize repacker 2015-11-02 19:28:30 +01:00
Alexander Neumann 1fc0d78913 Refactor Index.Store() to take a PackedBlob 2015-11-02 19:07:03 +01:00
Alexander Neumann f3f84b1544 Add ID handling for index 2015-11-02 18:52:13 +01:00
Alexander Neumann 60a34087c9 Move LoadIndexWithDecoder to index.go 2015-11-02 18:52:13 +01:00
Alexander Neumann 89a77ab2f9 Add Index.ListPack() 2015-11-02 18:52:13 +01:00
Alexander Neumann fccde030d5 Refactor Index.Lookup() to return struct PackedBlob 2015-10-31 14:47:42 +01:00
Alexander Neumann 7711fcda69 use new index format for repository tests 2015-10-27 20:51:55 +01:00
Alexander Neumann 7717ea5cca Add benchmark for LoadJSONPack 2015-10-27 20:51:55 +01:00
Alexander Neumann 88849c06a6 rebuild-index: Refactor a bit 2015-10-25 17:53:02 +01:00
Alexander Neumann 9074c923ea index: add AddToSupersedes() 2015-10-25 17:06:56 +01:00
Alexander Neumann 461d54e43c Refactor repository.SaveIndex() 2015-10-25 17:05:54 +01:00
Alexander Neumann 04614c7527 Add test for packs in duplicate indexes 2015-10-25 15:35:33 +01:00
Alexander Neumann f7ff5b766c Mark written indexes as finalized 2015-10-25 15:35:18 +01:00
Alexander Neumann d9f9b77d68 Add Index.Packs() and IDSet.Equals() 2015-10-25 15:28:01 +01:00
Alexander Neumann 4b1a2caea7 Allow overwriting the IndexFull function for tests 2015-10-25 15:05:22 +01:00
Alexander Neumann af0d6f58b9 Remove unneeded pointer to pack id 2015-10-25 14:35:08 +01:00
Alexander Neumann 2710d6399a Cleanup index code 
The selectFn wasn't used any more, so remove it from generatePackList().
 2015-10-25 14:26:04 +01:00
Alexander Neumann 1dd731fdb8 Handle concurrent access to the inFlight list 2015-10-14 20:50:54 +02:00
Alexander Neumann 6fa4be5af2 Regularly save intermediate indexes 2015-10-12 23:59:17 +02:00
Alexander Neumann 941b7025b6 Delete Index.Remove() 2015-10-12 22:51:11 +02:00
Alexander Neumann 4b2a4b03ec Remove Index.StoreInProgress() 2015-10-12 22:49:31 +02:00
Alexander Neumann 86fcd170f6 Add and use MasterIndex 2015-10-12 22:34:12 +02:00
Alexander Neumann 64fa89d406 Add error checks 2015-10-12 22:07:56 +02:00
Alexander Neumann eb73182fcf Rework index decode and handling old format 2015-10-12 20:53:07 +02:00
Alexander Neumann 356bb62243 Add CreateEncryptedBlob and GetDecryptReader 2015-10-12 20:53:07 +02:00
Alexander Neumann 96f2165067 Allow loading index with old format 2015-10-12 20:53:07 +02:00
Alexander Neumann 7944e8e323 Update index format 2015-10-12 20:53:07 +02:00
Alexander Neumann cc7acba02b Return the original backend ID on duplicate entries 2015-10-11 20:45:50 +02:00
Alexander Neumann f188cf81dc Add more panic() calls for invalid conditions 2015-10-11 20:45:42 +02:00
Alexander Neumann 7db2369081 Shorten error message for tree errors 2015-10-11 20:22:52 +02:00
Philipp Serr 7b11660f4f Prevent concurrent processing of same blob 
... by first adding a preliminary index entry and making this fail if
an index entry for the same blob already exists.

A preliminary index entry is characterized by not yet being associated
with a pack. Until now, these entries where added to the index just
like final index entries using index.Store, which silently overwrites
existing index entries.

This commit adds a new method index.StoreInProgress which refuses to
overwrite existing index entries and allows for creating preliminary
index entries only. The existing method index.Store has not been
changed and continues to silently overwrite existing index entries.
This distinction is important, as otherwise, it would be impossible to
update a preliminary index entry after the blob has been written to a
pack.

Resolves: restic#292
 2015-09-27 16:56:49 +02:00
Alexander Neumann d42ff509ba Small refactorings 
* use uint instead of uint32 in packs/indexes
 * use ID.Str() for debug messages
 * add ParallelIDWorkFunc
 2015-09-05 18:41:58 +02:00
Alexander Neumann 681d7851aa index: use backend.ID instead of string for maps 2015-09-05 18:41:58 +02:00
Alexander Neumann b85927576b Address code review comments 2015-07-26 18:01:20 +02:00
Alexander Neumann bd746a0425 fuse: refactor and add tests for fuse.file 2015-07-26 16:43:42 +02:00
Alexander Neumann 55ddd5317d Reduce memory usage for fuse mount 
This changes `repository.LoadBlob()` so that a destination buffer must
be provided, which enables the fuse code to use a buffer from a
`sync.Pool`. In addition, release the buffers when the file is closed.
At the moment, the max memory usage is defined by the max file size that
is read in one go (e.g. with `cat`). It could be further optimized by
implementing a LRU caching scheme.
 2015-07-26 14:25:59 +02:00
Alexander Neumann 5cdcc99eba Use array instead of hash for backend.ID 
Since backend.ID is always a slice of constant length, use an array
instead of a slice. Mostly, arrays behave as slices, except that an
array cannot be nil, so use `*backend.ID` insteaf of `backend.ID` in
places where the absence of an ID is possible (e.g. for the Subtree of a
Node, which may not present when the node is a file node).

This change allows to directly use backend.ID as the the key for a map,
so that arbitrary data structures (e.g. a Set implemented as a
map[backend.ID]struct{}) can easily be formed.
 2015-07-25 18:01:57 +02:00
Matthieu Rakotojaona ca6b7ec533 Add Index.LookupSize 2015-07-19 23:04:18 +02:00
Alexander Neumann 54c4c29a89 Add checker and command 'check' to replace 'fsck' 2015-07-11 16:27:38 +02:00
Alexander Neumann cbcf58f1c0 repository: Improve error message 2015-07-11 16:13:11 +02:00
Florian Weingarten 36a62cf77d Extract chunker 2015-07-08 16:58:23 -04:00
Alexander Neumann 5c1fe5784a repository: Load index in parallel 2015-07-05 11:07:10 +02:00
Alexander Neumann 14d252dfba Allow cancelling parallel workers on files 2015-07-05 11:07:10 +02:00
Alexander Neumann 0b531210eb Add repository.FilesInParallel 2015-07-05 11:07:10 +02:00
Alexander Neumann 885b27fdbb Add test and benchmark for LoadIndex 2015-07-05 11:07:10 +02:00
Alexander Neumann 58600e3bb8 repository: Add comments, silence golint 2015-07-05 11:07:10 +02:00