Hi there,
I have a ceph cluster running hammer-release.
Recently I trimmed a lot of virtual disks and I can verify that
the size of the images has decreased a lot.
I checked this with:
/usr/bin/rbd diff $IMG | grep -v zero |awk '{ SUM += $2 } END { print
SUM/1024/1024 " MB" }'
the output after fstrim is always lower than the output before the fstrim
becaue the trimmed blocks are shown as zero by rbd diff-
However: The output of ceph status never decreases, now matter about how
many disks I trim, I always have the output:
26457 GB used, 74549 GB / 101006 GB avail
I expected the 26457 GB number to decrease.
Doesn't ceph delete or truncate or zero trimmed blocks on osds ?
Is there something I misunderstand ?
Thanks
Christoph
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