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
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
>
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> ceph-users@xxxxxxxxxxxxxx
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--
Thank you!
HuangJun
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