We have a cluster running RGW (Giant release). We've noticed that the
".rgw" pool has an unexpectedly high number of objects:
$ ceph df
...
POOLS:
NAME ID USED %USED MAX AVAIL
OBJECTS
...
.rgw.root 5 840 0 29438G
3
.rgw.control 6 0 0 29438G
8
.rgw 7 9145k 0 29438G
37953
.rgw.gc 8 0 0 29438G
32
.users.uid 9 4364 0 29438G
23
.users 10 22 0 29438G
2
.users.swift 11 22 0 29438G
2
.rgw.buckets.index 12 0 0 29438G
13
.rgw.buckets 13 16536M 0.02 29438G
38091
So there are about the same number of objects in .rgw as there are in
.rgw.buckets. Is that expected? Or are we perhaps having some gc issues
that we are unaware of?
The reason this came up is that we have sized .rgw with only a small
number of PGs - do we need to rethink that (or does that fact that the
objects are tiny mitigate the need to increase PGs)?
Cheers
Mark
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