lvm

[Bill Crawford]

On Monday 24 November 2008 00:34:25 Patrick Dupre wrote:
> Hello,
>
> I duplicate an hard drive to another one with logical partition.
> I kept the / on a standard partition, put the /usr on /dev/VG1/usr, etc...
> When I mount the logical partitions I do  experience any problem but when
> I boot the machine on the logical partition I get an error from the
> /etc/fstab.
>
> fsck complains
> 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>
>
> I am using grub,
>
> In the fstab I put:
> /dev/VG1/usr	/usr
>
> I looks like that the logical partitions are not recognize by fsck, but it
> works fine when I do the same from a properly boot disk.
>
> What did I miss ?
>
> Regards.

You probably need to rebuild the initrd for your kernel to know about the new 
logical volume name(s).