Re: slow pacific osd startup

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In particular, do you have bluestore_fsck_quick_fix_on_mount set to true?

Josh

On Fri, Feb 11, 2022 at 2:08 AM Eugen Block <eblock@xxxxxx> wrote:
>
> Hi,
>
> is there a difference in PG size on new and old OSDs or are they all
> similar in size? Is there some fsck enabled during OSD startup?
>
>
> Zitat von Andrej Filipcic <andrej.filipcic@xxxxxx>:
>
> > Hi,
> >
> > with 16.2.7, some OSDs are very slow to start, eg it takes ~30min
> > for an hdd (12TB, 5TB used) to become active. After initialization,
> > there is 20-40min of extreme reading at ~150MB/s from the OSD, just
> > after
> > -------
> > Uptime(secs): 602.2 total, 0.0 interval
> > Flush(GB): cumulative 0.101, interval 0.000
> > AddFile(GB): cumulative 0.000, interval 0.000
> > AddFile(Total Files): cumulative 0, interval 0
> > AddFile(L0 Files): cumulative 0, interval 0
> > AddFile(Keys): cumulative 0, interval 0
> > Cumulative compaction: 0.72 GB write, 1.22 MB/s write, 0.71 GB read,
> > 1.21 MB/s read, 33.1 seconds
> > Interval compaction: 0.00 GB write, 0.00 MB/s write, 0.00 GB read,
> > 0.00 MB/s read, 0.0 seconds
> > Stalls(count): 0 level0_slowdown, 0 level0_slowdown_with_compaction,
> > 0 level0_numfiles, 0 level0_numfiles_with_compaction, 0 stop for
> > pending_compaction_bytes, 0 slowdown for pending_compaction_bytes, 0
> > memtable_compaction, 0 memtable_slowdown, interval 0 total count
> >
> > ** File Read Latency Histogram By Level [default] **
> > -------
> > and the log (no special debug conf) is not updated during that time.
> >
> > These slow OSDs were created with nautilus, and I am not quite sure
> > when this slow startup appeared. the newer OSDs are fast to start.
> > The minimum OSD release is set to pacific.
> >
> > Any hints before I start debuging the problem? The history of installs:
> > 2020-09-15T09:42:29Z SUBDEBUG Installed: ceph-base-2:15.2.4-0.el8.x86_64
> > 2020-12-23T11:02:29Z SUBDEBUG Upgrade: ceph-base-2:15.2.8-0.el8.x86_64
> > 2021-08-31T08:46:29Z SUBDEBUG Upgrade: ceph-base-2:16.2.5-0.el8.x86_64
> > 2022-02-09T09:38:42+0100 SUBDEBUG Upgrade: ceph-base-2:16.2.7-0.el8.x86_64
> >
> > Best regards,
> > Andrej
> >
> > --
> > _____________________________________________________________
> >    prof. dr. Andrej Filipcic,   E-mail: Andrej.Filipcic@xxxxxx
> >    Department of Experimental High Energy Physics - F9
> >    Jozef Stefan Institute, Jamova 39, P.o.Box 3000
> >    SI-1001 Ljubljana, Slovenia
> >    Tel.: +386-1-477-3674    Fax: +386-1-425-7074
> > -------------------------------------------------------------
> >
> > _______________________________________________
> > ceph-users mailing list -- ceph-users@xxxxxxx
> > To unsubscribe send an email to ceph-users-leave@xxxxxxx
>
>
>
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