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03-25-2005 12:38 AM
03-25-2005 12:38 AM
superblocks backup
where we can see backup of superblocks in Linux.Like we can see /var/adm/sbtab in HP-UX.
and while trying to run fsck it shows exception....bad superblock magic number in /dev/hda try fsck -b 1843.
and while trying to run fsck it shows exception....bad superblock magic number in /dev/hda try fsck -b 1843.
2 REPLIES 2
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03-25-2005 09:03 AM
03-25-2005 09:03 AM
Re: superblocks backup
The superblock copies are spread over the filesystem.
to find them You will usually need information on the block size of the filesystem.
what happens if You try fsck -b 1843?
in the worst case You can use a loop to seek over the whole filesystem like (example!)
divide filesystem size through blocks
pos=0;while [ $fssize -ge $pos ];
do
fsck -n -b $pos /dev/vgdata/lvol01
done
to find them You will usually need information on the block size of the filesystem.
what happens if You try fsck -b 1843?
in the worst case You can use a loop to seek over the whole filesystem like (example!)
divide filesystem size through blocks
pos=0;while [ $fssize -ge $pos ];
do
fsck -n -b $pos /dev/vgdata/lvol01
done
yesterday I stood at the edge. Today I'm one step ahead.
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03-27-2005 09:14 PM
03-27-2005 09:14 PM
Re: superblocks backup
hi amit,
check the attached link
http://www.edseek.com/archives/2004/02/25/ext3-filesystem-bad-superblock-recovery/
check the attached link
http://www.edseek.com/archives/2004/02/25/ext3-filesystem-bad-superblock-recovery/
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