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From: GrandMasterLee <masterlee@digitalroadkill.net>
To: Michael Clark <michael@metaparadigm.com>
Cc: Simon Roscic <simon.roscic@chello.at>, linux-kernel@vger.kernel.org
Subject: Re: [Kernel 2.5] Qlogic 2x00 driver
Date: 16 Oct 2002 22:12:38 -0500	[thread overview]
Message-ID: <1034824350.26.33.camel@localhost> (raw)
In-Reply-To: <3DAD988B.40704@metaparadigm.com>

On Wed, 2002-10-16 at 11:49, Michael Clark wrote:
> On 10/17/02 00:28, Simon Roscic wrote:
> 
> >>This was happening in pretty much all kernels I tried (a variety of
> >>redhat kernels and aa kernels). Removing LVM has solved the problem.
> >>Although i was blaming LVM - maybe it was a buffer overflow in qla driver.
> > 
> > looks like i had a lot of luck, because my 3 servers wich are using the
> > qla2x00 5.36.3 driver were running without problems, but i'll update to 6.01
> > in the next few day's.
> > 
> > i don't use lvm, the filesystem i use is xfs, so it smells like i had a lot of luck for 
> > not running into this problem, ...

So then, it seems that LVM is adding stress to the system in a way that
is bad for the kernel. Perhaps the read-ahead in conjunction with the
large buffers from XFS, plus the amount of volumes we run(22 on the
latest machine to crash).

> Seems to be the correlation so far. qlogic driver without lvm works okay.
> qlogic driver with lvm, oopsorama.

Michael, what exactly do your servers do? Are they DB servers with ~1Tb
connected, or file-servers with hundreds of gigs, etc?

> ~mc
> 
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  reply	other threads:[~2002-10-17  3:06 UTC|newest]

Thread overview: 35+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-10-15 19:20 [Kernel 2.5] Qlogic 2x00 driver Simon Roscic
2002-10-15 19:31 ` Arjan van de Ven
2002-10-15 19:53   ` Simon Roscic
2002-10-16  2:51     ` Michael Clark
2002-10-16  3:56       ` GrandMasterLee
2002-10-16  4:30         ` Michael Clark
2002-10-16  4:35           ` J Sloan
2002-10-16  4:43             ` GrandMasterLee
2002-10-16  6:03               ` Michael Clark
2002-10-16  6:31                 ` GrandMasterLee
2002-10-16  6:40                   ` Michael Clark
2002-10-16  6:48                     ` GrandMasterLee
2002-10-16  6:59                       ` Michael Clark
2002-10-16  4:58             ` GrandMasterLee
2002-10-16  5:28             ` Michael Clark
2002-10-16  5:40               ` Andreas Dilger
2002-10-17  1:59                 ` Andrew Vasquez
2002-10-17  2:44                   ` GrandMasterLee
2002-10-17  3:11                     ` Andrew Vasquez
2002-10-17  3:42                       ` GrandMasterLee
2002-10-17  9:40                       ` Michael Clark
2002-10-18  6:45                         ` GrandMasterLee
2002-10-16 16:28       ` Simon Roscic
2002-10-16 16:49         ` Michael Clark
2002-10-17  3:12           ` GrandMasterLee [this message]
2002-10-17  3:54             ` Michael Clark
2002-10-17  4:08               ` GrandMasterLee
2002-10-17  5:03                 ` Michael Clark
2002-10-16  5:02 ` GrandMasterLee
2002-10-16 16:38   ` Simon Roscic
2002-10-17  3:08     ` GrandMasterLee
2002-10-17 17:47       ` Simon Roscic
2002-10-18  6:42         ` GrandMasterLee
2002-10-18 15:11           ` Simon Roscic
  -- strict thread matches above, loose matches on Subject: below --
2002-10-19  2:17 rwhron

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