There could be a need to move the entire LVM Volume group from one system to another system. Following are the steps to it in the proper way;
1. Check the mount info of the LVM (Showing only the relevant mount point):
/dev/mapper/vg--1-lv--1 on /bijitLVM type ext4 (rw)
2. Unmount the LV:
# umount /bijitLVM/
3. Deactivate the Volume Group (VG):
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv-1 vg-1 -wi-a- 2.00g
# vgchange -an vg-1
0 logical volume(s) in volume group "vg-1" now active
The link /dev/vg-1/lv-1 should have been removed by udev but it is still present. Falling back to
direct link removal.
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv-1 vg-1 -wi--- 2.00g
4. Export the Volume Group:
# vgexport -v vg-1
Using volume group(s) on command line
Finding volume group "vg-1"
Volume group vg-1 is exported
5. PVScan to check PV status:
# pvscan
PV /dev/sda6 is in exported VG vg-1 [3.71 GiB / 1.71 GiB free]
PV /dev/sda7 is in exported VG vg-1 [3.72 GiB / 3.72 GiB free]
Total: 2 [7.43 GiB] / in use: 2 [7.43 GiB] / in no VG: 0 [0 ]
Now, one may detach the physical drives associated with the Volume Group from the system (on shutdown). Attach the drives to another system and perform the sequence of steps below;
6. Import the VG:
# vgimport -v vg-1
Using volume group(s) on command line
Finding volume group "vg-1"
Archiving volume group "vg-1" metadata (seqno 4).
Creating volume group backup "/etc/lvm/backup/vg-1" (seqno 5).
Volume group "vg-1" successfully imported
7. PVScan to check PV status
# pvscan
PV /dev/sda6 VG vg-1 lvm2 [3.71 GiB / 1.71 GiB free]
PV /dev/sda7 VG vg-1 lvm2 [3.72 GiB / 3.72 GiB free]
Total: 2 [7.43 GiB] / in use: 2 [7.43 GiB] / in no VG: 0 [0 ]
8. Activate the VG
# vgchange -ay vg-1
1 logical volume(s) in volume group "vg-1" now active
/dev/mapper/vg--1-lv--1 not set up by udev: Falling back to direct node creation.
The link /dev/vg-1/lv-1 should had been created by udev but it was not found. Falling back to
direct link creation.
# lvs
LV VG Attr LSize Origin Snap% Move Log Copy% Convert
lv-1 vg-1 -wi-a- 2.00g
