It is quite easy to move a whole volume group to another system if, for example, a user department acquires a new server. To do this we use the vgexport and vgimport commands.
vgexport/vgimport is not necessary to move drives from one system to another. It is an administrative policy tool to prevent access to volumes in the time it takes to move them.
First, make sure that no users are accessing files on the active volume, then unmount it
# unmount /mnt/design/users
Marking the volume group inactive removes it from the kernel and prevents any further activity on it.
# vgchange -an design vgchange -- volume group "design" successfully deactivated
It is now necessary to export the volume group. This prevents it from being accessed on the ``old'' host system and prepares it to be removed.
# vgexport design vgexport -- volume group "design" successfully exported
When plugged into the new system it becomes /dev/sdb so an initial pvscan shows:
# pvscan pvscan -- reading all physical volumes (this may take a while...) pvscan -- inactive PV "/dev/sdb1" is in EXPORTED VG "design" [996 MB / 996 MB free] pvscan -- inactive PV "/dev/sdb2" is in EXPORTED VG "design" [996 MB / 244 MB free] pvscan -- total: 2 [1.95 GB] / in use: 2 [1.95 GB] / in no VG: 0 
If you are importing on an LVM 2 system, run:
# vgimport design Volume group "vg" successfully imported
If you are importing on an LVM 1 system, add the PVs that need to be imported:
# vgimport design /dev/sdb1 /dev/sdb2 vgimport -- doing automatic backup of volume group "design" vgimport -- volume group "design" successfully imported and activated
You must activate the volume group before you can access it.
# vgchange -ay design
Hosting by: Hurra Communications Ltd.
Generated: 2007-01-26 17:58:03