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Re: [Xen-users] Issue with XEN slave server

from [Tim Post]

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To:	tech@xxxxxxxxxxxxxxxxxxx
Subject:	Re: [Xen-users] Issue with XEN slave server
From:	Tim Post <echo@xxxxxxxxxxxx>
Date:	Sat, 22 Nov 2008 10:14:19 +0800
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Hi,

On Sat, 2008-11-22 at 07:18 +0530, tech@xxxxxxxxxxxxxxxxxxx wrote:
> Hello,
> 
>  One of our XEN slave server became freezed and only a reboot could make it 
> up. On checking the server's /var/log/messages, we could find the following:
> 
> ================
> 
> Nov 20 18:16:46 s433 kernel: s:0: rejecting I/O to offline device
> 
> Nov 20 18:16:46 s433 kernel: sd 1:0:0:0: rejecting I/O to offline device
> 
> Nov 20 18:16:46 s433 last message repeated 85 times
> 
> Nov 20 18:16:46 s433 kernel: sd 1:0:0:0: re:0: rejecting I/O to offline device
> 
> Nov 20 18:16:46 s433 kernel: sd 1:0:0:0: rejecting I/O to offline device
> 
> ==================

It looks like something backing a vbd vanished sometime after the guest
started .. perhaps a problem with a SAN (or a degraded RAID) ?

There should be more in your xen logs to help figure this out. Are you
running HVM or PV guests?

Cheers,
--Tim



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