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Fix statistics in prune for duplicates

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Note that this fix only solves the statistics problem, if
all duplicates are marked for repacking.

If not all duplicates are marked for repacking, we lack the
information which

The situation that not all duplicates are marked for repacking can occur
when using the `max-repack-size` option
This commit is contained in:
Alexander Weiss 2020-11-18 22:30:22 +01:00
parent 45ba456291
commit cb5ec7ea6b
1 changed files with 11 additions and 8 deletions
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19
cmd/restic/cmd_prune.go
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@ -233,12 +233,20 @@ func prune(opts PruneOptions, gopts GlobalOptions, repo restic.Repository, usedB
// iterate over all blobs in index to find out which blobs are duplicates
for blob := range repo.Index().Each(ctx) {
bh := blob.Handle()
size := uint64(pack.PackedSizeOfBlob(blob.Length))
switch {
case usedBlobs.Has(bh): // used blob, move to keepBlobs
usedBlobs.Delete(bh)
keepBlobs.Insert(bh)
stats.size.used += size
stats.blobs.used++
case keepBlobs.Has(bh): // duplicate blob
duplicateBlobs.Insert(bh)
stats.size.duplicate += size
stats.blobs.duplicate++
default:
stats.size.unused += size
stats.blobs.unused++
}
}
@ -270,18 +278,12 @@ func prune(opts PruneOptions, gopts GlobalOptions, repo restic.Repository, usedB
case duplicateBlobs.Has(bh): // duplicate blob
ip.usedSize += size
ip.duplicateBlobs++
stats.size.duplicate += size
stats.blobs.duplicate++
case keepBlobs.Has(bh): // used blob, not duplicate
ip.usedSize += size
ip.usedBlobs++
stats.size.used += size
stats.blobs.used++
default: // unused blob
ip.unusedSize += size
ip.unusedBlobs++
stats.size.unused += size
stats.blobs.unused++
}
// update indexPack
indexPack[blob.PackID] = ip
@ -432,8 +434,9 @@ func prune(opts PruneOptions, gopts GlobalOptions, repo restic.Repository, usedB
}
totalBlobs := stats.blobs.used + stats.blobs.unused + stats.blobs.duplicate
totalSize := stats.size.used + stats.size.duplicate + stats.size.unused + stats.size.unref
unusedSize := stats.size.duplicate + stats.size.unused
Verboseff("total: %10d blobs / %s\n", totalBlobs, formatBytes(totalSize))
Verboseff("unused size: %s of total size\n", formatPercent(stats.size.unused, totalSize))
Verboseff("unused size: %s of total size\n", formatPercent(unusedSize, totalSize))
Verbosef("\nto repack: %10d blobs / %s\n", stats.blobs.repack, formatBytes(stats.size.repack))
Verbosef("this removes %10d blobs / %s\n", stats.blobs.repackrm, formatBytes(stats.size.repackrm))
@ -441,7 +444,7 @@ func prune(opts PruneOptions, gopts GlobalOptions, repo restic.Repository, usedB
totalPruneSize := stats.size.remove + stats.size.repackrm + stats.size.unref
Verbosef("total prune: %10d blobs / %s\n", stats.blobs.remove+stats.blobs.repackrm, formatBytes(totalPruneSize))
Verbosef("remaining: %10d blobs / %s\n", totalBlobs-(stats.blobs.remove+stats.blobs.repackrm), formatBytes(totalSize-totalPruneSize))
unusedAfter := stats.size.unused - stats.size.remove - stats.size.repackrm
unusedAfter := unusedSize - stats.size.remove - stats.size.repackrm
Verbosef("unused size after prune: %s (%s of remaining size)\n",
formatBytes(unusedAfter), formatPercent(unusedAfter, totalSize-totalPruneSize))
Verbosef("\n")