Jay Munsterman <jaymuns...@gmail.com> schreef op 7 december 2018 21:55:25 CET: >Hey all, >I hope this is a simple question, but I haven't been able to figure it >out. >On one of our clusters there seems to be a disparity between the global >available space and the space available to pools. > >$ ceph df >GLOBAL: > SIZE AVAIL RAW USED %RAW USED > 1528T 505T 1022T 66.94 >POOLS: > NAME ID USED %USED MAX AVAIL OBJECTS > fs_data 7 678T 85.79 112T 194937779 > fs_metadata 8 62247k 0 57495G 92973 > libvirt_pool 14 495G 0.57 86243G 127313 > >The global available space is 505T, the primary pool (fs_data, erasure >code >k=2, m=1) lists 112T available. With 2,1 I would expect there to be >~338T >available (505 x .67). Seems we have a few hundred TB missing. >Thoughts? >Thanks, >jay
Your OSDs are imbalanced. Ceph reports disk usage of the OSD most full. I suggest you check this presentation by Dan van der Ster: https://www.slideshare.net/mobile/Inktank_Ceph/ceph-day-berlin-mastering-ceph-operations-upmap-and-the-mgr-balancer If you are running Ceph Luminous with Luminous only clients: enable upmap for balancing and enable balancer module. Gr. Stefan Hi, _______________________________________________ ceph-users mailing list ceph-users@lists.ceph.com http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
