Resizing an ext3 partition in an LVM2 volume

Extending a Logical Volume

The basic (3) commands are:

lvextend
e2fsck
resize2fs

For example, I have /home that is currently a 4GB partition mounted in my vgmirror volume group. In order to turn /home into a 64GB partition, I need to use the following commands.

# pvscan
# lvscan
# umount /home
(if you can't unmount the volume, you may need to boot the LiveCD)
# lvextend -L+60G /dev/vgmirror/home
# e2fsck -f /dev/vgmirror/home
# resize2fs /dev/vgmirror/home
# mount /home

Now, for /home, odds are high that you will have to boot a LiveCD due to the volume being in use.