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Message-ID: <46C2F8C4.1030607@linpro.no>
Date: Wed, 15 Aug 2007 14:59:48 +0200
From: Tore Anderson <tore@...pro.no>
To: Matthew Wilcox <matthew@....cx>
Cc: Linus Torvalds <torvalds@...ux-foundation.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
linux-scsi@...r.kernel.org, James.Smart@...lex.Com
Subject: Re: Linux 2.6.23-rc3
* Tore Anderson
> I can confirm that this patch solves my problem without any side
> effects (as far as I can tell).
I'm sorry I have to retract this statement. When I did some changes
on my storage array, it generated RSCNs and therefore I/O briefly
failed, causing timeouts and path failovers.
I've attached the log of the event from the host running the patched
kernel, and you'll see the -EEXIST message and call trace near the end.
I'm sorry that I can't reproduce this much, because the RSCNs affect
all hosts connected to the SAN, including a number of production
systems which I can't touch more than necessary - unless if you know of
any way to make the HBA drivers (qla2xxx/lpfc) to ignore all RSCN
updates so that I/O is unaffected by them (I'd be forever grateful,
too).
Regards
--
Tore Anderson
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