xfs filesystem erased.

["Seungsoo Lee" <yiseungsu@xxxxxxxxxxx>]

Hi.

Since I have tried to fix the problem for a few day, but I Couldn't . I 
wrote it briefly below.

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1.detect the problem

[root@localhost mntb]# mount -t xfs /dev/hdd1 /home/lss1/lssmnt/mntd
mount: wrong fs type, bad option, bad superblock on /dev/hdd1,
      or too many mounted file systems
[root@localhost mntb]#

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2.the trials to rescue this disk

=========================================================
Spec:
Model: WDC WD1800JB-00DUA0
filesystem type: XFS
capacity: 180G
My system: RED HAT 9(kernel:SGI 2.4.20-09XFS)
=========================================================

I'm useing this disk for backup disk. Abosolutely it contains very important
files to me.


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* In redhat, I check the "hardware browser".

Results:

 /dev/hda
  hda2 1   255  2000M linux-swap
  hda1 256 9733 74348M xfs    /

  /dev/hdb
  hdd1 1 21889  171703M NO filesystem(*)

  (*) why does the XFS partiions(hdd1) remove? it's originally used in XFS.
  I didn't format this one.
--------------------------------------------------------------------------------------------------
  To rescue one. I did it like below. it doesn't work.
  I don't know exactly why this happens abruptly?

  
-------------------------------------------------------------------------------------------------
  [root@localhost sbin]# ./xfs_repair /dev/hdd1
Phase 1 - find and verify superblock...
superblock read failed, offset 0, size 524288, ag 4294967295, rval 0

fatal error -- Input/output error

[root@localhost sbin]# ./xfs_repair /dev/hdd
Phase 1 - find and verify superblock...
superblock read failed, offset 0, size 524288, ag 4294967295, rval 0

fatal error -- Input/output error
[root@localhost sbin]#
  
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 * another ways to rescue this disk.

 1.partition-rescue-mini-howto.

  it's not helpful. it's useless to rescue original XFS filesystem.

  2.SGI FAQ and Mailing list Archives.

  There is also no similar case.

  Around Mar 2003, I have a problem to use XFS. At that time, I report the
  problem to the XFS team. Through a few communications with xfs team. At
  that time,I decided there is no bugs in XFS but,the physical harddisk.

   This case definitely has no problems of this physical hard disk.

*is there anyway to repair the corrupted xfs filesystem even if it costs ?
*do I have to format this disk?


                                                                   
thanks.......

                                                              from 
"yiseungsu@xxxxxxxxxxx"

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