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Code Issues Releases Wiki Activity

Remove unneeded packs without repacking

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This commit is contained in:
Alexander Neumann 2016-08-25 22:35:22 +02:00
parent de88fb2022
commit b2a67d458c
1 changed files with 29 additions and 1 deletions
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30
src/cmds/restic/cmd_prune.go
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@ -169,6 +169,7 @@ func (cmd CmdPrune) Execute(args []string) error {
for h, blob := range idx.Blobs { for h, blob := range idx.Blobs {
if !usedBlobs.Has(h) { if !usedBlobs.Has(h) {
rewritePacks.Merge(blob.Packs) rewritePacks.Merge(blob.Packs)
continue
} }
if blobCount[h] > 1 { if blobCount[h] > 1 {
@ -176,13 +177,40 @@ func (cmd CmdPrune) Execute(args []string) error {
} }
} }
cmd.global.Verbosef("will rewrite %d packs\n", len(rewritePacks)) // find packs that are unneeded
removePacks := backend.NewIDSet()
nextPack:
for packID, p := range idx.Packs {
for _, blob := range p.Entries {
h := pack.Handle{ID: blob.ID, Type: blob.Type}
if usedBlobs.Has(h) {
continue nextPack
}
}
removePacks.Insert(packID)
if !rewritePacks.Has(packID) {
return fmt.Errorf("pack %v is unneeded, but not contained in rewritePacks", packID.Str())
}
rewritePacks.Delete(packID)
}
cmd.global.Verbosef("will delete %d packs and rewrite %d packs\n", len(removePacks), len(rewritePacks))
err = repository.Repack(repo, rewritePacks, usedBlobs) err = repository.Repack(repo, rewritePacks, usedBlobs)
if err != nil { if err != nil {
return err return err
} }
for packID := range removePacks {
err = repo.Backend().Remove(backend.Data, packID.String())
if err != nil {
cmd.global.Warnf("unable to remove file %v from the repository\n", packID.Str())
}
}
cmd.global.Verbosef("creating new index\n") cmd.global.Verbosef("creating new index\n")
for _ = range repo.List(backend.Data, done) { for _ = range repo.List(backend.Data, done) {