I have three logical volumes in a single volume group using a single physical volume (the whole existing disk /dev/sda).
I now want to move one of those logical volumes to a new, faster disk, i.e., going from:
/dev/sda |-vg0-root → mounted to / |-vg0-foo → mounted to /foo |-vg0-bar → mounted to /bar
/dev/sda |-vg0-root → mounted to / |-vg0-foo → mounted to /foo /dev/sdb |-vg1-bar → mounted to /bar
From what I understand I cannot use
vgsplit because there's only one physical volume in the existing volume group.
What's a good approach to achieve this (preferably online, creating a new volume group for the new disk is not a requirement)?