Received: (from majordomo@localhost) by oss.sgi.com (8.11.3/8.11.3) id f3PKNGN16039 for linux-xfs-outgoing; Wed, 25 Apr 2001 13:23:16 -0700 Received: from rogue.tripp.org (fdsl9.slkc.uswest.net [209.181.83.9]) by oss.sgi.com (8.11.3/8.11.3) with ESMTP id f3PKNFM16032 for ; Wed, 25 Apr 2001 13:23:15 -0700 Received: from localhost (justin@localhost) by rogue.tripp.org (8.9.3/8.9.3) with ESMTP id OAA44568 for ; Wed, 25 Apr 2001 14:23:14 -0600 (MDT) (envelope-from justin@tripp.org) Date: Wed, 25 Apr 2001 14:22:47 -0600 (MDT) From: Justin Tripp To: Subject: Errors using amanda/xfsdump Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-xfs@oss.sgi.com Precedence: bulk I have been trying to backup xfs partitions using amanda, and there seems to be a problem with xfsdump. Amanda suprisingly recognized xfsdump and seems to tried to do the backup correctly. On the other hand, whenever we attempted to backup the machine would belly-up hard. The problem is vexing, because sometimes it will fail consistently and quickly, yet other times it seems to take all day to fail. I am doing to following to replicate the amanda backup: ssh xfs_machine -l root "/usr/sbin/xfsdump -F -l 0 - /dev/sda1" | gzip -6 - > file.gz At the same time the xfs_machine is serving up a partition nfs and the partition is being read and written, by two independant news spools. Doing a usenet news spool over nfs onto xfs, may not be the best performance-wise, but I think most may agree that a news server can hit disks pretty hard when it comes to file ops. After xfsdump caused the machine to fail, got the following error message on the console: xfs_iget_core: ambiguous vns: vp/0xc3a543c8 invp/0xcf89d948 Unable to handle kernel NULL pointer dereference at virtual address 00000008 printing eip: d08f90bf *pdc=00000000 Entering kdb (current=0xc96dc00, pid 803) on processor 1 Oops: Oops due to oops @ 0xd08490bf ... The process listing showed that xfs was pid 803. I have been unable to reliable recreate the failure. Sometimes it fails, and some times it does not. (It does seem to fail more reliably in the morning :) ) I am backing up about 2G of files produced by the news servers. Any ideas? The machine is a Dual 500 MHz PIII, and the filesystems run on top of the 3ware IDE raid card with 4 46G disks running in RAID level 5. (138G filesystem available...) The XFS is the 2.4.3 version from April 5th. .justin. ------------------------------------------------------------------------ Justin Leonard Tripp justin@ee.byu.edu Configurable Computing Laboratory Research Assistant CB 461 x8-7206 Electrical and Computer Engineering Department Brigham Young University