Date: 18 Nov 1994 08:41:15 GMT
I ran into trouble yesterday as our main Linux machine came to a
halt. Nothing seemed to work except an occational ping to the ethernet
card. The reset button was the only solution since all VCs had frozen
and telnetd seemed out of order. After the reboot the kernel was
unable to mount root and paniced. Now, this has happened before, and I
had a bootdisk + rootdisk ready, which would enable me to do a manual
fsck on the rootdevice. The magic formula, which has always worked for
me in the past, 'fsck -t ext2 -a /dev/sda3' only gave the error
'Block bitmap 790647877 for group 32 not in group'
and returned me to the prompt.
Your block group descriptors on your filesystem got trashed. You should
hopefully be able to recover by telling e2fsck to use the backup
superblock and block group descriptors:
e2fsck -b 8193 /dev/sda3