Re: Jewel to Kraken OSD upgrade issues

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Would you simply do?

 * ceph -s

On Fri, Feb 17, 2017 at 6:26 AM, Benjeman Meekhof <bmeekhof@xxxxxxxxx> wrote:
> As I'm looking at logs on the OSD mentioned in previous email at this
> point, I mostly see this message repeating...is this normal or
> indicating a problem?  This osd is marked up in the cluster.
>
> 2017-02-16 16:23:35.550102 7fc66fce3700 20 osd.564 152609
> share_map_peer 0x7fc6887a3000 already has epoch 152609
> 2017-02-16 16:23:35.556208 7fc66f4e2700 20 osd.564 152609
> share_map_peer 0x7fc689e35000 already has epoch 152609
> 2017-02-16 16:23:35.556233 7fc66f4e2700 20 osd.564 152609
> share_map_peer 0x7fc689e35000 already has epoch 152609
> 2017-02-16 16:23:35.577324 7fc66fce3700 20 osd.564 152609
> share_map_peer 0x7fc68f4c1000 already has epoch 152609
> 2017-02-16 16:23:35.577356 7fc6704e4700 20 osd.564 152609
> share_map_peer 0x7fc68f4c1000 already has epoch 152609
>
> thanks,
> Ben
>
> On Thu, Feb 16, 2017 at 12:19 PM, Benjeman Meekhof <bmeekhof@xxxxxxxxx> wrote:
>> I tried starting up just a couple OSD with debug_osd = 20 and
>> debug_filestore = 20.
>>
>> I pasted a sample of the ongoing log here.  To my eyes it doesn't look
>> unusual but maybe someone else sees something in here that is a
>> problem:  http://pastebin.com/uy8S7hps
>>
>> As this log is rolling on, our OSD has still not been marked up and is
>> occupying 100% of a CPU core.  I've done this a couple times and in a
>> matter of some hours it will be marked up and CPU will drop.  If more
>> kraken OSD on another host are brought up the existing kraken OSD go
>> back into max CPU usage again while pg recover.  The trend scales
>> upward as OSD are started until the system is completely saturated.
>>
>> I was reading the docs on async messenger settings at
>> http://docs.ceph.com/docs/master/rados/configuration/ms-ref/ and saw
>> that under 'ms async max op threads' there is a note about one or more
>> CPUs constantly on 100% load.  As an experiment I set max op threads
>> to 20 and that is the setting during the period of the pasted log.  It
>> seems to make no difference.
>>
>> Appreciate any thoughts on troubleshooting this.  For the time being
>> I've aborted our kraken update and will probably re-initialize any
>> already updated OSD to revert to Jewel except perhaps one host to
>> continue testing.
>>
>> thanks,
>> Ben
>>
>> On Tue, Feb 14, 2017 at 3:55 PM, Gregory Farnum <gfarnum@xxxxxxxxxx> wrote:
>>> On Tue, Feb 14, 2017 at 11:38 AM, Benjeman Meekhof <bmeekhof@xxxxxxxxx> wrote:
>>>> Hi all,
>>>>
>>>> We encountered an issue updating our OSD from Jewel (10.2.5) to Kraken
>>>> (11.2.0).  OS was RHEL derivative.  Prior to this we updated all the
>>>> mons to Kraken.
>>>>
>>>> After updating ceph packages I restarted the 60 OSD on the box with
>>>> 'systemctl restart ceph-osd.target'.  Very soon after the system cpu
>>>> load flat-lines at 100% with top showing all of that being system load
>>>> from ceph-osd processes.  Not long after we get OSD flapping due to
>>>> the load on the system (noout was set to start this, but perhaps
>>>> too-quickly unset post restart).
>>>>
>>>> This is causing problems in the cluster, and we reboot the box.  The
>>>> OSD don't start up/mount automatically - not a new problem on this
>>>> setup.  We run 'ceph-disk activate $disk' on a list of all the
>>>> /dev/dm-X devices as output by ceph-disk list.  Everything activates
>>>> and the CPU gradually climbs to once again be a solid 100%.  No OSD
>>>> have joined cluster so it isn't causing issues.
>>>>
>>>> I leave the box overnight...by the time I leave I see that 1-2 OSD on
>>>> this box are marked up/in.   By morning all are in, CPU is fine,
>>>> cluster is still fine.
>>>>
>>>> This is not a show-stopping issue now that I know what happens though
>>>> it means upgrades are a several hour or overnight affair.  Next box I
>>>> will just mark all the OSD out before updating and restarting them or
>>>> try leaving them up but being sure to set noout to avoid flapping
>>>> while they churn.
>>>>
>>>> Here's a log snippet from one currently spinning in the startup
>>>> process since 11am.  This is the second box we did, the first
>>>> experience being as detailed above.  Could this have anything to do
>>>> with the 'PGs are upgrading' message?
>>>
>>> It doesn't seem likely — there's a fixed per-PG overhead that doesn't
>>> scale with the object count. I could be missing something but I don't
>>> see anything in the upgrade notes that should be doing this either.
>>> Try running an upgrade with "debug osd = 20" and "debug filestore =
>>> 20" set and see what the log spits out.
>>> -Greg
>>>
>>>>
>>>> 2017-02-14 11:04:07.028311 7fd7a0372940  0 _get_class not permitted to load lua
>>>> 2017-02-14 11:04:07.077304 7fd7a0372940  0 osd.585 135493 crush map
>>>> has features 288514119978713088, adjusting msgr requires for clients
>>>> 2017-02-14 11:04:07.077318 7fd7a0372940  0 osd.585 135493 crush map
>>>> has features 288514394856620032 was 8705, adjusting msgr requires for
>>>> mons
>>>> 2017-02-14 11:04:07.077324 7fd7a0372940  0 osd.585 135493 crush map
>>>> has features 288514394856620032, adjusting msgr requires for osds
>>>> 2017-02-14 11:04:09.446832 7fd7a0372940  0 osd.585 135493 load_pgs
>>>> 2017-02-14 11:04:09.522249 7fd7a0372940 -1 osd.585 135493 PGs are upgrading
>>>> 2017-02-14 11:04:10.246166 7fd7a0372940  0 osd.585 135493 load_pgs
>>>> opened 148 pgs
>>>> 2017-02-14 11:04:10.246249 7fd7a0372940  0 osd.585 135493 using 1 op
>>>> queue with priority op cut off at 64.
>>>> 2017-02-14 11:04:10.256299 7fd7a0372940 -1 osd.585 135493
>>>> log_to_monitors {default=true}
>>>> 2017-02-14 11:04:12.473450 7fd7a0372940  0 osd.585 135493 done with
>>>> init, starting boot process
>>>> (logs stop here, cpu spinning)
>>>>
>>>>
>>>> regards,
>>>> Ben
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>>>> ceph-users@xxxxxxxxxxxxxx
>>>> http://lists.ceph.com/listinfo.cgi/ceph-users-ceph.com
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