Re: vgrename using fc6 rescue [redux]


On Sat, 2008-01-05 at 17:01 -0500, Tod wrote:
Tod wrote:
I made it to the command prompt and typed in lvm vgscan, no volume
groups are found. fdisk -l sees all my drives/partitions.

What do I need to do to get it to recognize my volume group so I can
rename it?


Sorry, poorly formed question. Let me try again.

I'm trying to rename my volume group. I have one drive with a non-LVM
boot partition and then the rest of the drive is LVM'ed, I have another
drive on the box - single partition, entirely LVM'ed.

From all indications I should be able to boot up with the fc6 rescue
cd, do a vgrename, change the /etc/fstab and grub.conf to reflect the
new name and life is good.

So I booted up with the rescues cd, did not enable the network, skipped
the search for fedora installations, and ended up with a command prompt.

At this point I should just be able to do a
- lvm vgscan
- lvm vgrename

I can't get past vgscan, it doesn't find any volume groups. If I try
vgrename --test oldname newname it fails because it still can't find any
volume groups.

ls /dev shows nothing volume group related. vgscan --mknodes, and
vgmknodes both do nothing.

This has to be something stupid I'm not doing but I am at a loss. Given
the VolGroup00 naming the fedora applies by default I can't imagine this
hasn't come up a lot yet none of the solutions I have found are
applicable. Can anybody point me in the right direction?


Thanks!


4 questions:
A. What's your hardware configuration. (Controller, drives, etc)
B. Stupid question - does F6 even recognize your storage; Can you see
something in the kernel
log? /sys/bus/scsi/devices/? /sys/bus/ide/devices/?
(Don't forget that the rescue CD is based on a far older kernel.)
C. Have you tried F7/8 rescue CDs?
D. What does pvscan return?

- Gilboa

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