[ceph-users] CEPH OSD Restarts taking too long v10.2.9

Nikhil R nikh.ravindra at gmail.com
Thu Mar 28 03:33:15 PDT 2019


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 at gmail.com> 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 at gmail.com> 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 at lists.ceph.com
> > http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
>
>
>
> --
> Thank you!
> HuangJun
>
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