[linux-lvm] Resizing the root LVM partition
Jonathan Morace
jmorace at gmail.com
Mon Sep 12 21:10:20 UTC 2005
I'm having a problem adding disks to my root partition, which is using
LVM. The quick summary is that I think I need to run resize2fs on the
root partition, but I can't figure out how to unmount the root
partition to do so.
The longer version of the story... I'm running Fedora Core 2, and
when I installed I had the root partition configured to be on two
disks using LVM. I added two more disks to the computer and followed
the howto to initialize the disks, add the physical volumes to the
volume group, and extend the logical volume. When I run "lvdisplay" I
see my logical volume is the correct size, but "df" only shows the
original size. I'm assuming this is because I haven't done a
"resize2fs". The reason I haven't is because I can't figure out how
to unmount the root filesystem in order to do this. If I boot with
linux rescue, I can choose not to mount the filesystems, but then the
LVM devices don't exist. I read somewhere that running "lvm vgscan -v
--mknodes" should do the trick, but as far as I could tell, no devices
were created.
Any ideas on how I can get the root partition resized to include the new disks?
Thanks for the help,
Jonathan
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