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prune: add repack-small parameter

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This commit is contained in:
Kyle Brennan 2022-04-30 15:02:01 -07:00 committed by Michael Eischer
parent 0a6fa602c8
commit 0269381b8d
2 changed files with 17 additions and 2 deletions
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14
cmd/restic/cmd_prune.go
View File

@ -52,6 +52,7 @@ type PruneOptions struct {
MaxRepackBytes uint64
RepackCachableOnly bool
RepackSmall bool
RepackUncompressed bool
}
@ -70,6 +71,7 @@ func addPruneOptions(c *cobra.Command) {
f.StringVar(&pruneOptions.MaxUnused, "max-unused", "5%", "tolerate given `limit` of unused data (absolute value in bytes with suffixes k/K, m/M, g/G, t/T, a value in % or the word 'unlimited')")
f.StringVar(&pruneOptions.MaxRepackSize, "max-repack-size", "", "maximum `size` to repack (allowed suffixes: k/K, m/M, g/G, t/T)")
f.BoolVar(&pruneOptions.RepackCachableOnly, "repack-cacheable-only", false, "only repack packs which are cacheable")
f.BoolVar(&pruneOptions.RepackSmall, "repack-small", false, "also repack small packs")
f.BoolVar(&pruneOptions.RepackUncompressed, "repack-uncompressed", false, "repack all uncompressed data")
}
@ -423,6 +425,7 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
var repackCandidates []packInfoWithID
repoVersion := repo.Config().Version
minPackSize := repo.MinPackSize()
// loop over all packs and decide what to do
bar := newProgressMax(!gopts.Quiet, uint64(len(indexPack)), "packs processed")
@ -464,6 +467,8 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
// use a flag that pack must be compressed
p.uncompressed = mustCompress
packIsLargeEnough := !opts.RepackSmall || packSize >= int64(minPackSize)
// decide what to do
switch {
case p.usedBlobs == 0:
@ -476,7 +481,7 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
// if this is a data pack and --repack-cacheable-only is set => keep pack!
stats.packs.keep++
case p.unusedBlobs == 0 && p.tpe != restic.InvalidBlob && !mustCompress:
case p.unusedBlobs == 0 && p.tpe != restic.InvalidBlob && !mustCompress && packIsLargeEnough:
// All blobs in pack are used and not mixed => keep pack!
stats.packs.keep++
@ -530,6 +535,10 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
pi := repackCandidates[i].packInfo
pj := repackCandidates[j].packInfo
switch {
case opts.RepackSmall && pi.unusedSize+pi.usedSize < uint64(minPackSize) && pj.unusedSize+pj.usedSize >= uint64(minPackSize):
return true
case opts.RepackSmall && pj.unusedSize+pj.usedSize < uint64(minPackSize) && pi.unusedSize+pi.usedSize >= uint64(minPackSize):
return false
case pi.tpe != restic.DataBlob && pj.tpe == restic.DataBlob:
return true
case pj.tpe != restic.DataBlob && pi.tpe == restic.DataBlob:
@ -552,6 +561,7 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
for _, p := range repackCandidates {
reachedUnusedSizeAfter := (stats.size.unused-stats.size.remove-stats.size.repackrm < maxUnusedSizeAfter)
reachedRepackSize := stats.size.repack+p.unusedSize+p.usedSize >= opts.MaxRepackBytes
packIsLargeEnough := !opts.RepackSmall || p.unusedSize+p.usedSize >= uint64(minPackSize)
switch {
case reachedRepackSize:
@ -561,7 +571,7 @@ func decidePackAction(ctx context.Context, opts PruneOptions, gopts GlobalOption
// repacking non-data packs / uncompressed-trees is only limited by repackSize
repack(p.ID, p.packInfo)
case reachedUnusedSizeAfter:
case reachedUnusedSizeAfter && packIsLargeEnough:
// for all other packs stop repacking if tolerated unused size is reached.
stats.packs.keep++

5
cmd/restic/integration_test.go
View File

@ -1611,6 +1611,11 @@ func testPruneVariants(t *testing.T, unsafeNoSpaceRecovery bool) {
checkOpts := CheckOptions{ReadData: true}
testPrune(t, opts, checkOpts)
})
t.Run("Small", func(t *testing.T) {
opts := PruneOptions{MaxUnused: "unlimited", RepackSmall: true}
checkOpts := CheckOptions{ReadData: true, CheckUnused: true}
testPrune(t, opts, checkOpts)
})
}
func testPrune(t *testing.T, pruneOpts PruneOptions, checkOpts CheckOptions) {