Hi all,
we use an EC-Pool with an small cache tier in front of, for our
archive-data (4 * 16TB VM-disks).
The ec-pool has k=3;m=2 because we startet with 5 nodes and want to
migrate to an new ec-pool with k=5;m=2. Therefor we migrate one VM-disk
(16TB) from the ceph-cluster to an fc-raid with the proxmox-ve interface
"move disk".
The move was finished, but during removing the ceph-vm file the warning
'ssd-archiv' at/near target max; pool ssd-archiv has too few pgs occour.
Some hour later only the second warning exsist.
ceph health detail
HEALTH_WARN pool ssd-archiv has too few pgs
pool ssd-archiv objects per pg (51196) is more than 14.7709 times
cluster average (3466)
info about the image, which was deleted:
rbd image 'vm-409-disk-1':
size 16384 GB in 4194304 objects
order 22 (4096 kB objects)
block_name_prefix: rbd_data.2b8fda574b0dc51
format: 2
features: layering
I think we hit http://tracker.ceph.com/issues/8103
but normaly one reading should not put the data in the cache tier, or??
Is deleting a second read??
Our ceph version: 0.87 (c51c8f9d80fa4e0168aa52685b8de40e42758578)
Regards
Udo
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