[linux-lvm] changing LE / PE table

[linux-lvm] changing LE / PE table

[Julian Glashoff]

Hello,

As I already said, my volume group is not accessible because of a crash
while trying to extend a logical volume. 'vgscan' says 'only found 768 of
769 LEs for LV /dev/vg00/lvol1' and does not find my volume group.
I have not been able to restore the backups with _any_ version of LVM.
So now I am wondering if it is possible to change the 'LE' table while the
volume group is offline.
Is there?

--
Julian Glashoff
<helldog@gmx.net>

Re: [linux-lvm] changing LE / PE table

[Andreas Dilger]

On Sep 13, 2001  21:38 +0200, Julian Glashoff wrote:
> As I already said, my volume group is not accessible because of a crash
> while trying to extend a logical volume. 'vgscan' says 'only found 768 of
> 769 LEs for LV /dev/vg00/lvol1' and does not find my volume group.
> I have not been able to restore the backups with _any_ version of LVM.
> So now I am wondering if it is possible to change the 'LE' table while the
> volume group is offline.

Please read my description posted a couple of days ago to fix a similar
problem (subject: only 626 of 625 PEs available).

Cheers, Andreas
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert

[linux-lvm] changing LE / PE table

[Julian Glashoff]

I already tried that. But all I get is a file with 328 \0's...
How can I find out where the metadata of my volume is?

--
Julian Glashoff
<helldog@gmx.net>

Re: [linux-lvm] changing LE / PE table

[Andreas Dilger]

On Sep 14, 2001  01:41 +0200, Julian Glashoff wrote:
> I already tried that. But all I get is a file with 328 \0's...
> How can I find out where the metadata of my volume is?

The numbers used in my example depend on the values output from "pvdata -PP"
and also the LV number in question.  In the example, it was LV 0 that was
affected, so it was easy to work with.  Add 328 bytes offset to the start
of the LV table for each LV number increase.

Cheers, Andreas
-- 
Andreas Dilger  \ "If a man ate a pound of pasta and a pound of antipasto,
                 \  would they cancel out, leaving him still hungry?"
http://www-mddsp.enel.ucalgary.ca/People/adilger/               -- Dogbert