Opened at 2010-09-06T22:22:09Z
Last modified at 2012-04-01T05:09:29Z
#1194 new defect
Garbage Collector need to remove subdirs of storage/shares when deleting shares — at Version 2
| Reported by: | freestorm | Owned by: | nobody |
|---|---|---|---|
| Priority: | normal | Milestone: | eventually |
| Component: | code-storage | Version: | 1.8β |
| Keywords: | munin statistics easy | Cc: | |
| Launchpad Bug: |
Description (last modified by davidsarah)
As discussed with Warner on IRC,
When GC deletes shares on the grid, it doesn't remove prefixdir and storageindex-dir.
The munin plugin tahoe_files counts storageindex-dir to know how many files are on the Grid.
The count is not correct because empty subdirs are present on storage/shares/.
Change History (2)
comment:1 Changed at 2010-09-06T22:41:40Z by warner
- Component changed from unknown to code-storage
comment:2 Changed at 2010-09-07T00:26:14Z by davidsarah
- Description modified (diff)
- Keywords munin statistics easy added
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In particular, when a share lives in BASEDIR/storage/shares/PREFIXDIR/SIDIR/SHNUM (e.g. node-1/storage/shares/d5/d5j2wyxwvrwiftiwvujhozu67i/3), if we delete the last share in the SIDIR, then we should also delete the SIDIR (but leave the PREFIXDIR), e.g. leave node-1/storage/shares/d5 but delete everything below that.
This requires code in allmydata.storage.immutable.ShareFile.unlink and allmydata.storage.mutable.MutableShareFile.unlink to look in the parent directory, see if it's empty, and if so unlink the parent.