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[Bug 206] XFS filesysem corruption while umounting sw raid 1

To: xfs-master@xxxxxxxxxxx
Subject: [Bug 206] XFS filesysem corruption while umounting sw raid 1
From: bugzilla-daemon@xxxxxxxxxxx
Date: Fri, 7 Feb 2003 16:31:09 -0800
Sender: linux-xfs-bounce@xxxxxxxxxxx
http://oss.sgi.com/bugzilla/show_bug.cgi?id=206

hmh@xxxxxxxxxx changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
            Version|Current                     |1.1.x



------- Additional Comments From hmh@xxxxxxxxxx  2003-02-07 16:31 -------
I've duplicated the problem as well. Linux 2.4.18, xfs 1.1 patches from SGI, 
SMP.
userspace is Debian 3.0r1.

Upon remount ro of /dev/md0 (root filesystem, RAID1 array) followed by a reboot,
the xfs fs would be corrupted. xfs_repair fixes the problem, which among other 
things causes the primary xfs superblock to be trashed.

I am not 100% sure the corruption happens at umount (well, I suppose a mount
ro,remount since it happened on the root partition at reboot time), raid1 
shutdown (maybe xfs doesn't flush state right at raid1 read-only remount for
root fs shutdown?), or raid1 resync.

The problem was very easy to duplicate: wait for the raid to resync, reboot,
and there would it go. xfs_repair time, again.



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