Re: Fwd: Kernel-client crash when adding OSDs

[Wido den Hollander <wido@42on.com>]

On 04/30/2014 04:16 PM, Thorwald Lundqvist wrote:
> Hi!
>
> A few days ago I added a bunch of new OSDs to hour production servers,
> we have 3 hosts that maps and unmaps hundreds of RBD devices every
> day. with aprox 100 RBD devs mapped at each host at any given time.
>
> Adding OSDs is usually quite smooth if you do it the right way. I
> usually follow the Manual adding/remove of osd as explained in the
> documentation. Except when it comes to the crush add, i prefer
> decompiling and compiling my own crush map.
 >
> So I preceded as usuall, prepared the OSD disks, keyring and so on,
> and then I started up 4 new ceph-osd (osd.{9,10,11,12}) on the new OSD
> host. BAM; a host that had a bunch of RBD devs mapped crashed and
> rebooted with this in the log: http://pastebin.com/YKJSdWLv
>

That procedure seems right, I've done that multiple times and it all 
worked fine. That was with librbd and RGW though, so I'm not sure if 
this was a kernel issue.

> I realise that this is not much to go on since there's no stack trace
> or anything, but if anyone can help me reproduce this, I'd be
> grateful. And if anyone had the same issue would really like to hear
> from them too.
>
> I'm running Linux 3.14.1 and ceph 0.72.2.
>
> Thank you for your time,
> Thorwald Lundqvist.
> Jumpstarter AB
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-- 
Wido den Hollander
42on B.V.
Ceph trainer and consultant

Phone: +31 (0)20 700 9902
Skype: contact42on