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repository: fix used quota computation

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storage_quota_use should reflect current disk space usage (not considering some overheads like for the index etc.).

 if a chunk is deleted, but the segment file containing the chunk is not yet compacted, the chunk's disk space is still in use!

 when compact_segments is dropping the unused chunks, it is the right time to reduce storage_quota_use.

 storage_quota_use includes the put header overhead.
This commit is contained in:
Thomas Waldmann 2022-01-08 22:19:33 +01:00
parent 75cbab3773
commit f4b9f63856
1 changed files with 2 additions and 3 deletions
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5
src/borg/repository.py
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@ -806,6 +806,7 @@ def complete_xfer(intermediate=True):
# do not remove entry with empty shadowed_segments list here,
# it is needed for shadowed_put_exists code (see below)!
pass
self.storage_quota_use -= len(data) + self.io.put_header_fmt.size
elif tag == TAG_DELETE and not in_index:
# If the shadow index doesn't contain this key, then we can't say if there's a shadowed older tag,
# therefore we do not drop the delete, but write it to a current segment.
@ -906,7 +907,7 @@ def _update_index(self, segment, objects, report=None):
pass
self.index[key] = segment, offset
self.segments[segment] += 1
self.storage_quota_use += size
self.storage_quota_use += size # note: size already includes the put_header_fmt overhead
elif tag == TAG_DELETE:
try:
# if the deleted PUT is not in the index, there is nothing to clean up
@ -919,7 +920,6 @@ def _update_index(self, segment, objects, report=None):
# is already gone, then it was already compacted.
self.segments[s] -= 1
size = self.io.read(s, offset, key, read_data=False)
self.storage_quota_use -= size
self.compact[s] += size
elif tag == TAG_COMMIT:
continue
@ -1239,7 +1239,6 @@ def _delete(self, id, segment, offset, *, update_shadow_index):
self.shadow_index.setdefault(id, []).append(segment)
self.segments[segment] -= 1
size = self.io.read(segment, offset, id, read_data=False)
self.storage_quota_use -= size
self.compact[segment] += size
segment, size = self.io.write_delete(id)
self.compact[segment] += size