linux-ext4 - [Bug 34302] Errors from kjournald

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Message-Id: <201105031848.p43ImT7Q001182@demeter1.kernel.org>
Date:	Tue, 3 May 2011 18:48:29 GMT
From:	bugzilla-daemon@...zilla.kernel.org
To:	linux-ext4@...r.kernel.org
Subject: [Bug 34302] Errors from kjournald

https://bugzilla.kernel.org/show_bug.cgi?id=34302

--- Comment #4 from Tom Moore <tmoore@...tial.ca>  2011-05-03 18:48:28 ---
> This looks like a problem with your disk. 

So this is a disk hardware problem...

> One possibility is if the source disks share the SATA controller with the
> target they may both be blocked at the same time.  

... or is it a driver problem?  I am not sure what you mean by both being
blocked at the same time, and I don't know what I should do about it.

I have two sata controllers, and I put one of the source raid disks on each
controller.  I thought that this would improve reliability and perhaps
performance.  This means that the backup target disk shares a controller with
one of the source disks.  It appears that the drive that reset is on the second
controller with the backup target disk (how do I confirm what contoller the
devices ata8.00 and ata9.00 belong to?).

I would appreciate any suggestions on how to triage this problem as being
either 
1) hardware that should be replaced (easy) and close this bug report; or
2) driver related that needs to be watched for in case it happens again.

TIA

Tom

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