Hi All,
This HORRIBLE thing has happened twice to me under RedHat 7.1, and I
am desperate for a solution.
Basically, we have about 10 or so PCs running RedHat 7.1. Both times the
partitions dissapeared, we were rebooting the computer. One reboot was
a legitimate one with a "shutdown -h", and the other was a hard (evil)
reboot by turning the power off.
Both times, the disk partitioning disapeared on some, but not all of
the disks on the computer. If we run "fdisk -l", no partitions are
reported.
Or if we run fsck on the device, we get this message:
fsck /scr4
Parallelizing fsck version 1.23 (15-Aug-2001)
e2fsck 1.23, 15-Aug-2001 for EXT2 FS 0.5b, 95/08/09
fsck.ext2: No such device or address while trying to open /dev/sda1
Possibly non-existent or swap device?
So we ran "fdisk <device>" and created a single primary partition on
the disk because we generally put a whole disks into one big partitions
for all our non-system filesystems. Then we type "e2fsck <device>"
which reports that the SUPERBLOCK is munged like this:
# e2fsck -n /dev/sda1
e2fsck 1.23, 15-Aug-2001 for EXT2 FS 0.5b, 95/08/09
e2fsck: Bad magic number in super-block while trying to open /dev/sda1
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 <device>
We also tried it on various alternate superblocks including 8192, 16384 and
32768, 98304, 163840 Then we ran "findsuper" on the disk to scan for any
superblocks. But e2fsck doesn't work for any of THOSE superblocks, either.
Here are my questions:
1. What is making these partitions dissapear?
2. What can we do to recover the data?
3. How can we prevent this in the future.
Thanks,
Cheryl
--
Cheryl Southard
[EMAIL PROTECTED]
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