Moving a LVM disk between systems

Say you have a LVM volume mounted on system A that you need to move to system B, you first have to umount it from A:

# umount /path-to-volume

Then either power down and remove the physical disk or if it's hot-pluggable, detach that device before moving it to sysetm B. Once it's installed on B:

# mkdir /new-path-to-volume

Look for your volume and its device path, for example

# lvscan
  inactive            '/dev/myvolume-volgroup/myvolume_logical_volume' [223.00 GiB] inherit

It will most likely be 'inactive', you need to activate it:

# vgchange -ay
# lvscan
  ACTIVE            '/dev/myvolume-volgroup/myvolume_logical_volume' [223.00 GiB] inherit

Add an entry to /etc/fstab:

/dev/myvolume-volgroup/myvolume_logical_volume   /new-path-to-volume       brtfs    discard,noatime 0       0

And mount it !

# mount -a