Hi,
I've shutoff the node without take any cautions for simulate a real case.
The osd_pool_default_min_size is 2 .
Regards,
Matteo
________________________________________
Da: Christian Balzer <ch...@gol.com>
Inviato: martedì 16 giugno 2015 01:44
A: ceph-users
Cc: Matteo Dacrema
Oggetto: Re: [ceph-users] CephFS client issue
Hello,
On Mon, 15 Jun 2015 23:11:07 +0000 Matteo Dacrema wrote:
> With 3.16.3 kernel it seems to be stable but I've discovered one new
> issue.
>
> If I take down one of the two osd node all the client stop to respond.
>
How did you take the node down?
What is your "osd_pool_default_min_size"?
Penultimately, you wouldn't deploy a cluster with just 2 storage nodes in
production anyway.
Christian
>
> Here the output of ceph -s
>
> ceph -s
> cluster 2de7b17f-0a3e-4109-b878-c035dd2f7735
> health HEALTH_WARN
> 256 pgs degraded
> 127 pgs stuck inactive
> 127 pgs stuck unclean
> 256 pgs undersized
> recovery 1457662/2915324 objects degraded (50.000%)
> 4/8 in osds are down
> clock skew detected on mon.cephmds01, mon.ceph-mon1
> monmap e5: 3 mons at
> {ceph-mon1=10.29.81.184:6789/0,cephmds01=10.29.81.161:6789/0,cephmds02=10.29.81.160:6789/0}
> election epoch 64, quorum 0,1,2 cephmds02,cephmds01,ceph-mon1 mdsmap
> e176: 1/1/1 up {0=cephmds01=up:active}, 1 up:standby osdmap e712: 8
> osds: 4 up, 8 in pgmap v420651: 256 pgs, 2 pools, 133 GB data, 1423
> kobjects 289 GB used, 341 GB / 631 GB avail
> 1457662/2915324 objects degraded (50.000%)
> 256 undersized+degraded+peered
> client io 86991 B/s wr, 0 op/s
>
>
> When I take UP the node all clients resume to work.
>
> Thanks,
> Matteo
>
> ?
>
>
> ________________________________
> Da: ceph-users <ceph-users-boun...@lists.ceph.com> per conto di Matteo
> Dacrema <mdacr...@enter.it> Inviato: luned? 15 giugno 2015 12:37
> A: John Spray; Lincoln Bryant; ceph-users
> Oggetto: Re: [ceph-users] CephFS client issue
>
>
> Ok, I'll update kernel to 3.16.3 version and let you know.
>
>
> Thanks,
>
> Matteo
>
> ________________________________
> Da: John Spray <john.sp...@redhat.com>
> Inviato: luned? 15 giugno 2015 10:51
> A: Matteo Dacrema; Lincoln Bryant; ceph-users
> Oggetto: Re: [ceph-users] CephFS client issue
>
>
>
> On 14/06/15 20:00, Matteo Dacrema wrote:
>
> Hi Lincoln,
>
>
> I'm using the kernel client.
>
> Kernel version is: 3.13.0-53-generic?
>
> That's old by CephFS standards. It's likely that the issue you're
> seeing is one of the known bugs (which were actually the motivation for
> adding the warning message you're seeing).
>
> John
>
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--
Christian Balzer Network/Systems Engineer
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http://www.gol.com/
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