Recovering Superblock
The /dev/ubda path does not exist anymore. Isn't it supposed to be /dev/ubd/0 ??
I tried pulling up the superblock on a different /dev/udbb and pointed me to 8193. However, it is of no use either.
Can someone help? Thanks.
Regards,
–Raj
(Repair filesystem) 36 # fsck
fsck 1.32 (09-Nov-2002)
e2fsck 1.32 (09-Nov-2002)
fsck.ext3: No such file or directory while trying to open /dev/ubda
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193
(Repair filesystem) 44 # backup_sblock=mke2fs -n /dev/ubdb | tail -2 | grep , | awk -F, '{print $1}'
mke2fs 1.32 (09-Nov-2002)
(Repair filesystem) 45 # echo $backup_sblock
8193
(Repair filesystem) 46 # fsck
fsck fsck.ext2 fsck.jfs fsck.reiserfs
fsck.cramfs fsck.ext3 fsck.msdos fsck.vfat
(Repair filesystem) 46 # fsck.ext2 -b 8193 /dev/ubdb
e2fsck 1.32 (09-Nov-2002)
fsck.ext2: Bad magic number in super-block while trying to open /dev/ubdb
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193
e2fsck 1.32 (09-Nov-2002)
fsck.ext2: No such file or directory while trying to open /dev/ubda
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2
filesystem (and not swap or ufs or something else), then the superblock
is corrupt, and you might try running e2fsck with an alternate superblock:
e2fsck -b 8193
1 Reply
If the /dev/ubda node doesn't exist in the rescue image's /dev directory, you can create it like this:````
/bin/mknod -m 660 /dev/ubda b 98 0; chown root.disk /dev/ubda
````
Then you can do this again to locate the alternative superblock:@raj:
(Repair filesystem) 44 # backup_sblock=
mke2fs -n /dev/ubdb | tail -2 | grep , | awk -F, '{print $1}'Only specifying /dev/ubda instead of /dev/ubdb.