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Re: Storage server, hung tasks and tracebacks

To: xfs@xxxxxxxxxxx
Subject: Re: Storage server, hung tasks and tracebacks
From: Stan Hoeppner <stan@xxxxxxxxxxxxxxxxx>
Date: Thu, 03 May 2012 07:50:00 -0500
In-reply-to: <20120502184450.GA2557@xxxxxxxx>
References: <20120502184450.GA2557@xxxxxxxx>
Reply-to: stan@xxxxxxxxxxxxxxxxx
User-agent: Mozilla/5.0 (Windows NT 5.1; rv:12.0) Gecko/20120428 Thunderbird/12.0.1
On 5/2/2012 1:44 PM, Brian Candler wrote:
> I have a really wierd problem with storage. The one thing that I *can* see
> is dmesg output giving messages about hung tasks and XFS call tracebacks, so
> I'm posting here in the hope that someone can help me interpret them - even
> if only to say "this definitely means that your disks are not responding"
> would be very helpful.
> Any other suggestions (and of course interpretation of the kernel call
> tracebacks) would be much appreciated.

Which mainboards are these Brian?  Make/model?

Make/model/count of all add in cards?

Make/model of PSU?

Make model of chassis?

I'll sleuth around and see what I can find.  Could be some obscure
expansion card interaction.  Could be undersized PSUs or lack of
backplanes spread evenly across the 12v rails of a multi-rail PSU, etc, etc.


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