[CentOS] vgrename, lvrename
drew einhorn
drew.einhorn at gmail.com
Mon Sep 13 04:40:52 UTC 2010
On Sat, Sep 11, 2010 at 2:55 PM, Robert Heller <heller at deepsoft.com> wrote:
> At Sat, 11 Sep 2010 13:45:55 -0600 CentOS mailing list <centos at centos.org>
> wrote:
> Note: in the case of mkinitrd, you will need to rebuild your initrd if
> you expect to actually boot the machine after renaming the volume group
> and logical volumes. You'll need to *manually* mount the root and /boot
> (at least) someplace (eg under /sysroot), then chroot there. Don't
> forget to fix /etc/fstab and /boot/grub/grub.conf (root=...).
Googling got me the command:
/sbin/mkinitrd -f /boot/initrd-$(uname -r).img $(uname -r)
Unfortunately this resulted in:
error opening /sys/block: No such file or directory
error opening /sys/block: No such file or directory
The renamed root lvm filesystem is mounted on /mnt/root
the /boot is in /dev/sda1 and mounted on /mnt/root/boot
before doing the chroot, I tried
sudo cp -a /sys/block /mnt/root/sys
Even though it was done with root privilege I got a lot of read permission
errors,
but a lot stuff did copy, maybe I got what I need.
did the mkinitrd, no errors
Lets try booting from the hard drive.
Hmm there's a splash screen, that's a good sign.
No Joy. It's not booting and complaining about not finding stuff with the
old names.
Did I screw up the grub.conf edits. Just checked they are ok.
It finds the volume groups with the new names
then complains about the old names:
Volume group "VolGroup00" not found
Unable to access resume device (/dev/VolGroup00/LogVol01)
Hmm. That's the old name of the swap device.
There's at least one more piece of the puzzle that's missing.
Lets boot up the Live CD again. And take a closer look at fstab. Looks
good to me.
--
Drew Einhorn
"You can see a lot by just looking."
-- Yogi Berra
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