It seems like the split settings result the problem, what about comment out those settings then see it still used that long time to restart? As a fast search in code, these two filestore_split_multiple = 72 filestore_merge_threshold = 480 doesn't support online change. Nikhil R <nikh.ravindra@xxxxxxxxx> 于2019年3月28日周四 下午6:33写道： > > Thanks huang for the reply. > Its is the disk compaction taking more time > the disk i/o is completely utilized upto 100% > looks like both osd_compact_leveldb_on_mount = false & leveldb_compact_on_mount = false isnt working as expected on ceph v10.2.9 > is there a way to turn off compaction? > > Also, the reason why we are restarting osd's is due to splitting and we increased split multiple and merge_threshold. > Is there a way we would inject it? Is osd restarts the only solution? > > Thanks In Advance > > in.linkedin.com/in/nikhilravindra > > > > On Thu, Mar 28, 2019 at 3:58 PM huang jun <hjwsm1989@xxxxxxxxx> wrote: >> >> Did the time really cost on db compact operation? >> or you can turn on debug_osd=20 to see what happens, >> what about the disk util during start? >> >> Nikhil R <nikh.ravindra@xxxxxxxxx> 于2019年3月28日周四 下午4:36写道： >> > >> > CEPH osd restarts are taking too long a time >> > below is my ceph.conf >> > [osd] >> > osd_compact_leveldb_on_mount = false >> > leveldb_compact_on_mount = false >> > leveldb_cache_size=1073741824 >> > leveldb_compression = false >> > osd_mount_options_xfs = "rw,noatime,inode64,logbsize=256k" >> > osd_max_backfills = 1 >> > osd_recovery_max_active = 1 >> > osd_recovery_op_priority = 1 >> > filestore_split_multiple = 72 >> > filestore_merge_threshold = 480 >> > osd_max_scrubs = 1 >> > osd_scrub_begin_hour = 22 >> > osd_scrub_end_hour = 3 >> > osd_deep_scrub_interval = 2419200 >> > osd_scrub_sleep = 0.1 >> > >> > looks like both osd_compact_leveldb_on_mount = false & leveldb_compact_on_mount = false isnt working as expected on ceph v10.2.9 >> > >> > Any ideas on a fix would be appreciated asap >> > in.linkedin.com/in/nikhilravindra >> > >> > _______________________________________________ >> > ceph-users mailing list >> > ceph-users@xxxxxxxxxxxxxx >> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com >> >> >> >> -- >> Thank you! >> HuangJun -- Thank you! HuangJun _______________________________________________ ceph-users mailing list ceph-users@xxxxxxxxxxxxxx http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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