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[Linux-cluster] Re: Linux-cluster Digest, Vol 35, Issue 18


we ran into that problem and went back and forth with dell for literally months as they replaces every component in the 220, our Perc cards, cables, etc. we were never able to solve the problem and I ended up buying a couple of iSCSI enclosures instead, which I've been very happy with. Much of the consensus from experts I've talked to is to avoid using shared SCSI buses for concurrent access, at least with the megaraid driver. I have not had any problems with the PV enclosure since shifting it to a single-system connection.

wish I could tell you something more positive. In the end I was not able to correlate the crashses with anything (load, calendar, processes, users, or settings). Sometimes it would go a month without crashing sometimes it would crash many times in a week. -alan


Date: Wed, 14 Mar 2007 15:55:32 +0100
From: "Holger L. Ratzel" <holger ratzel she net>
Subject: [Linux-cluster] Problem with shared SCSI-Storage
To: linux-cluster redhat com
Cc: "Stempel, Steffen" <Steffen Stempel she net>
Message-ID: <200703141555 32868 holger ratzel she net>
Content-Type: text/plain;	charset="us-ascii"

Hi All,

I've a problem with a RHEL4 cluster running on two Dell PowerEdge 1850 and an
Dell PowerVault PV220S. After running for a while I get errors from the
megaraid driver in /var/log/messages saying that the device was "offlined"
and the service gets relocated to the other node while the original node
reboots. The relevant parts from /var/log/messages can be downloaded from

Dell has checked the system and all firmwares have been updated, so it seems
not to be a hardware problem.

Please mail me if you have any questions or need further information.

I would appreciate any suggestions.

Many thanks an best regards,

	Holger Ratzel

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