On Sun, 14 Dec 2003, Seungsoo Lee wrote:
> 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
Unfortunately, this doesn't tell us anything, it is just the generic
error from userspace "mount." Looking at "dmesg" output should
tell you what really went wrong.
> 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
Sounds like a hardware error, if xfs can't even read the disk.
Again, look at dmesg output after this happens.
> This case definitely has no problems of this physical hard disk.
What makes you sure of this?
> *is there anyway to repair the corrupted xfs filesystem even if it costs ?
> *do I have to format this disk?
There are data recovery shops that can try to rescue data from
bad disks, if that turns out to be the case.
-Eric
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