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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 Important Notice: The contents of this email are intended solely for the named addressee and are confidential; any unauthorised use, reproduction or storage of the contents is expressly prohibited. If you have received this email in error, please delete it and any attachments immediately and advise the sender by return email or telephone. Deakin University does not warrant that this email and any attachments are error or virus free. |
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