[linux-lvm] lvm on CentOS with raid1 and grub
Lamont R. Peterson
peregrine at openbrainstem.net
Fri Sep 8 15:34:46 UTC 2006
On Friday 08 September 2006 02:38am, Sterpu Victor wrote:
> After a reboot I couldn't boot from none of my hdd's.
> I receive just a grub console. Now I must reinstall grub, but in order
> to do this I need to know the name of the root partion in the LVM.
> To find out this I moved one of the hdd's in another computer and I
> tried to mount the LVM partition.
You can not put /boot/ on top of LVM or RAID, except RAID 1 but you have to be
careful if you need to boot from the second (or later) drive.
There are patches out there for GRUB to allow it to read LVM and they make it
possible to boot when the /boot/ files are on LVM. Last I heard, they were
still officially "experimental" but apparently pretty much working. I think
I read somewhere that the plan was to support LVM with GRUB2 when it
releases, but don't quote me on that, I can't seem to find the reference at
> I do "modprobe dm-mod" and when I do "vgchange -ay" I get the message:
> File descriptor 3 left open
> File descriptor 5 left open
> File descriptor 7 left open
> No volume groups found
> I have no LVM devices in /dev.
> The alternative is to reinstall the OS, but....
> Thank you.
> linux-lvm mailing list
> linux-lvm at redhat.com
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
Lamont R. Peterson <peregrine at OpenBrainstem.net>
Founder [ http://blog.OpenBrainstem.net/peregrine/ ]
GPG Key fingerprint: 0E35 93C5 4249 49F0 EC7B 4DDD BE46 4732 6460 CCB5
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