[Linux-PowerEdge] Rejecting I/O to offline device

Eberhard Moenkeberg emoenke at gwdg.de
Fri Jul 5 10:35:58 CDT 2013


Hi,

On Fri, 5 Jul 2013, info at mjwebhosting.nl wrote:
> Op 5-7-2013 17:12, Eberhard Moenkeberg schreef:
>> On Fri, 5 Jul 2013, Audet, Martin (RTFT) wrote:

>>> We have many boxes PE R710 that experiencing this issue.
>>> The server stop responding and the error message "sd 0:2:0:0 Rejecting
>>> I/O to offline device" appears in a console.
>>> These servers run XenServer 5.6.
>>> The Bios version:       6.3.0
>>> Perc H700i fw version:  12.3.0-0032
>> I had seen that in a R620 with H700 raid controller and 3 raid1 pairs of
>> OCZ Vertex SSDs.
>> 
>> When I did a througput test on one raid set and hit about 1 gbyte/sec, the
>> other two raid sets went offline.
>> 
>> I guess the PCI-e througput is the bottleneck.

> Which OS are you using?
> I have the same problem with centos 6.4 64 bit.
> I have the kernel line and then the problem fixed.

SUSE SLES11 SP2, x86_64.

If I understand you right: you have set a special kernel parameter, and 
the problem went away?

Please tell us what you did.


Viele Gruesse
Eberhard Moenkeberg (emoenke at gwdg.de, em at kki.org)

-- 
Eberhard Moenkeberg
Arbeitsgruppe IT-Infrastruktur
E-Mail: emoenke at gwdg.de      Tel.: +49 (0)551 201-1551
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