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Re: lvm

On Monday 24 November 2008 00:34:25 Patrick Dupre wrote:

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

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
      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 ?


You probably need to rebuild the initrd for your kernel to know about the new
logical volume name(s).
Now, I am not that sure because I did read that it is necessary to rebuild the initrd if the root is on a lvm which is not my case !

 Patrick DUPRÉ                      |   |
 Department of Chemistry            |   |    Phone: (44)-(0)-1904-434384
 The University of York             |   |    Fax:   (44)-(0)-1904-432516
 Heslington                         |   |
 York YO10 5DD  United Kingdom      |   |    email: pd520 york ac uk

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