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SubjectRebooting a system with a bad filesystem (2.4.2 + ReiserFS)
Hi guys,

I have a system here with the following setup:

Filesystem 1k-blocks Used Available Use% Mounted on
/dev/hda3 19072868 6260156 11843848 35% /
/dev/hda1 198313 18161 169898 10% /boot
/dev/md0 525461076 89626136 435834940 18% /raid

/raid is the reiserfs volume. / is ext2.

The only thing on /raid is some pcbackup stuff. The system entirely runs
from the root drive (ext2 filesystem).

Lately, reiserfs has been giving me problems. If I try to do anything on
/raid - like vi a text file, the kernel will oops. But the system will
stay up. All the services are there, and I can login.

However, I cannot unmount the partition, or do anythinh else. Even if I
call sync, it never returns. I can't even reboot the system, or shutdown
my nfs services. Since all of the stuff is on the root drive, shouldn't
linux be able to cope with such a situation? I know that filesystems do
get corrupted every now and then, especially if they are in the beta
stage. But such a malfunction should not keep the whole system from being
shutdown.

The only way now is to hit the magic reset button. With this, I loose a
lot of data. I dont know when sync was called last, but when I tried to
call it manually, it never returned.

All the processes that are dealing with the /raid partition, are in STATE
D, uninterruptible sleep, and cannot be killed.

root 828 46.7 11.0 29628 28172 ? D 02:00 258:15
/opt/legato/usr/sbin/save -s lester.arraycomm.com -g Linux Servers -LL -f -
-m bertha.arraycomm.com -l full -q -W 78 -N /raid /raid
root 1599 0.0 0.2 1452 548 pts/4 D 10:40 0:00 umount /dev/md0
root 1634 0.0 0.2 1452 548 pts/6 D 10:45 0:00 umount /dev/md0

I'd appreciate any help. Thank you.

Jasmeet.

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