Hi,
Is there any config on Ceph that block/not perform space reclaim?
I test on one pool which has only one image 1.8 TiB in used.
rbd $p du im/root
warning: fast-diff map is not enabled for root. operation may be slow.
NAME PROVISIONED USED
root 2.2 TiB 1.8 TiB
I already removed all snaphots and now pool has only one image alone.
I run both fstrim over the filesystem (XFS) and try rbd sparsify im/root (don't know what it is exactly but it mentions to reclaim something)
It still shows the pool used 6.9 TiB which totally not make sense right? It should be up to 3.6 (1.8 * 2) according to its replica?
POOLS:
POOL ID PGS STORED OBJECTS USED %USED MAX AVAIL QUOTA OBJECTS QUOTA BYTES DIRTY USED COMPR UNDER COMPR
im 19 32 3.5 TiB 918.34k 6.9 TiB 4.80 69 TiB N/A 10 TiB 918.34k 0 B 0 B
I think now some of others pool have this issue too, we do clean up a lot but seems space not reclaimed.
I estimate more than 50 TiB should be able to reclaim, actual usage of this cluster much less than current reported number.
Thank you for your help.
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