From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Heinz J . Mauelshagen" Subject: Re: [linux-lvm] Oops when running snapshots Message-ID: <20030710113223.D23240@sistina.com> References: <1057789596.1368.28.camel@lvadplx> Mime-Version: 1.0 In-Reply-To: <1057789596.1368.28.camel@lvadplx>; from andrew@fc.hp.com on Wed, Jul 09, 2003 at 04:26:36PM -0600 Sender: linux-lvm-admin@sistina.com Errors-To: linux-lvm-admin@sistina.com Reply-To: linux-lvm@sistina.com List-Help: List-Post: List-Subscribe: , List-Unsubscribe: , List-Archive: Date: Thu Jul 10 04:34:01 2003 List-Id: Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-lvm@sistina.com On Wed, Jul 09, 2003 at 04:26:36PM -0600, Andrew Patterson wrote: > Ran a load test last night where we created snapshots two snapshots > every 2 hours under heavy file system load. We got the following oops: > > > Unable to handle kernel NULL pointer dereference at virtual address > 00000000 > 802895f5 > 11: 89 48 04 mov %ecx,0x4(%eax) > > > 10 warnings issued. Results may not be reliable. > > This was run on a 2.4.21 system using LVM 1.0.7. The system has 2GB of > memory and is configured with HIGHME64G. We are running the latest > 2.4.21 XFS and are using xfs_freeze to quiesce the file system. We are > not using the VFS_LOCK patch. > > Anyone have any ideas what may be causing this? VM problems ? (we had some reports ITR) Do you have a chance to retest without HIGHMEM to see if it still fails ? > > Thanks, > > Andrew > > -- > =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= > Andrew Patterson Voice: (970) 898-3261 > Hewlett-Packard Company Email: andrew@fc.hp.com > > > > _______________________________________________ > linux-lvm mailing list > linux-lvm@sistina.com > http://lists.sistina.com/mailman/listinfo/linux-lvm > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/ -- Regards, Heinz -- The LVM Guy -- *** Software bugs are stupid. Nevertheless it needs not so stupid people to solve them *** =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=- Heinz Mauelshagen Sistina Software Inc. Senior Consultant/Developer Am Sonnenhang 11 56242 Marienrachdorf Germany Mauelshagen@Sistina.com +49 2626 141200 FAX 924446 =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-