[ale] bad XFS superblock

[Greg Freemyer]

On Thu, 2003-11-13 at 13:07, Mike Panetta wrote:
> Does XFS have a way to supply an alternate superblock like EXT2 does?
> if it does figure out what they may be and try one of them.  Another thing
> to try (to rule out bad blocks on the disk) is to run badblocks on it.  If it shows
> alot of errors the HDD may be in the process of going bad and you may need
> to replace it.  If it just shows a few errors badblocks may be able to fix the issue by
> moving things around on the disk a bit.
> 
> HTH,
> Mike
> 
> -----Original Message-----
> From: "ChangingLINKS.com" <groups at ChangingLINKS.com>
> Sent: Nov 13, 2003 12:44 PM
> To: ale at ale.org
> Subject: [ale] bad XFS superblock
> 
> My Suse 8.2 crashed M$FT style while I was using ymessenger.
> When I tried to I reboot it, it gave an error (forgot the error but it 
> mentioned the filesystem). I tried rebooting several times and then I tried 
> using xfs_repair and xfs_check. Those attempts returned "bad superblock and 
> input/output error." By googling and testing, I came to understand that I 
> have a bad superblock. I tried mounting the HD on another machine - and it 
> would not mount (or even be recognized correcty by YAST2.
> However, the drive did get recognized by the BIOS, and if I use it as the 
> master, grub comes up and it dies right about the time it is trying to load 
> the filesystem.
> 
> I could not find anyone mentioning how to "fix" a superblock in XFS. Is it 
> possible for me to repair this filesystem, or am I SOL? The installation had 
> some nice information (bookmarks, history, special software installations) 
> and I would like to recover it if I can. Anyone?

XFS does provide a secondary (backup) superblock I'm pretty sure.

Also the XFS mailing list is very active and supportive, so I would post
on it.  I don't know if they accept e-mail from non-subscribers or not.

http://oss.sgi.com/projects/xfs/mail.html

Greg
-- 
Greg Freemyer