Ceph newbie question.
I have a disparity between the free space that my cephfs file system is showing
and what ceph df is showing.
As you can see below my cephfs file system says there is 9.5TB free however
ceph df says there is 186TB which with replication size 3 should equate to 62TB
free space.
I guess the basic question is how can I get cephfs to see and use all of the
available space?
I recently changed my number of pg's on the cephfs_data pool from 2048 to 4096
and this gave me another 8TB so do I keep increasing the number of pg's or is
there something else that I am missing? I have only been running ceph for ~6
months so I'm relatively new to it all and not being able to use all of the
space is just plain bugging me.
# df -h /ceph
Filesystem Size Used Avail Use% Mounted on
X,y,z:/ 107T 97T 9.5T 92% /ceph
# ceph df
GLOBAL:
SIZE AVAIL RAW USED %RAW USED
495 TiB 186 TiB 310 TiB 62.51
POOLS:
NAME ID USED %USED MAX AVAIL OBJECTS
cephfs_data 1 97 TiB 91.06 9.5 TiB 156401395
cephfs_metadata 2 385 MiB 0 9.5 TiB 530590
# ceph osd pool ls detail
pool 1 'cephfs_data' replicated size 3 min_size 1 crush_rule 0 object_hash
rjenkins pg_num 4096 pgp_num 4096 last_change 33914 lfor 0/29945 flags
hashpspool,nearfull,selfmanaged_snaps stripe_width 0 application cephfs
removed_snaps [2~2]
pool 2 'cephfs_metadata' replicated size 3 min_size 1 crush_rule 0 object_hash
rjenkins pg_num 256 pgp_num 256 last_change 33914 lfor 0/30369 flags
hashpspool,nearfull stripe_width 0 application cephfs
Regards
Robert Ruge
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