Hi,
ceph osd pool get your_pool_name size
ceph osd pool ls detail
these are commands to get the size of a pool regarding the
replication, not the available storage.
So the capacity in 'ceph df' is returning the space left on the pool and
not the 'capacity size'.
I'm not aware of a limitation in pool capacity except for your OSD
sizes, CRUSH device classes and such. The more OSDs you have the more
available space you'll have. An example:
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
pool-1 1 2694G 52.67 2420G 646186
pool-1-cache 33 15130M 1.97 733G 3734
cephfs-data 35 945G 28.08 2420G 3148723
cephfs-metadata 36 232M 0.03 733G 432347
test1 45 309 0 2420G 4
test2 48 309 0 2420G 4
You see the exact same "MAX AVAIL" sizes for all HDD pools (pool-1,
cephfs-data, test1, test2) of 2420G. The cache tier pool-1-cache has
the same space available as the cephfs-metadata as they both reside on
the same SSD-OSDs.
Hope this clears it up a little.
Regards,
Eugen
Zitat von Sébastien VIGNERON <sebastien.vigneron@xxxxxxxxx>:
# for a specific pool:
ceph osd pool get your_pool_name size
Le 20 juil. 2018 à 10:32, Sébastien VIGNERON
<sebastien.vigneron@xxxxxxxxx> a écrit :
#for all pools:
ceph osd pool ls detail
Le 20 juil. 2018 à 09:02, sinan@xxxxxxxx a écrit :
Hi,
How can I see the size of a pool? When I create a new empty pool I can see
the capacity of the pool using 'ceph df', but as I start putting data in
the pool the capacity is decreasing.
So the capacity in 'ceph df' is returning the space left on the pool and
not the 'capacity size'.
Thanks!
Sinan
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