if i comment filestore_split_multiple = 72 filestore_merge_threshold = 480 in the ceph.conf wont ceph take the default value of 2 and 10 and we would be in more splits and crashes?
On Fri, Mar 29, 2019 at 6:55 AM huang jun <hjwsm1989@xxxxxxxxx> wrote:
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
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