LVM: Remove an existing Volume Group -

LVM: Remove an existing Volume Group

# Tested on RHEL 5, 6 & 7

VG=testvg

vgdisplay -v $VG
    Using volume group(s) on command line.
--- Volume group ---
VG Name               testvg
System ID
Format                lvm2
Metadata Areas        1
Metadata Sequence No 60
VG Access             read/write
VG Status             resizable
MAX LV                0
Cur LV                1
Open LV               1
Max PV                0
Cur PV                1
Act PV                1
VG Size               508.00 MiB
PE Size               4.00 MiB
Total PE              127
Alloc PE / Size       64 / 256.00 MiB
Free PE / Size       63 / 252.00 MiB
VG UUID               MgAY7y-AVfr-FOFP-5RVO-jHA8-Obel-UK2M9k

--- Logical volume ---
LV Path                /dev/testvg/testlv
LV Name                testlv
VG Name                testvg
LV UUID                uwa2U4-C2J4-pjPK-CYT4-jvMO-qgj7-gabWBN
LV Write Access        read/write
LV Creation host, time ciento3.localdomain, 2016-02-25 14:19:41 +0100
LV Status              available
# open                 1
LV Size                256.00 MiB
Current LE             64
Segments               1
Allocation             inherit
Read ahead sectors     auto
- currently set to     8192
Block device           253:8

--- Physical volumes ---
PV Name               /dev/sde1
PV UUID               jgt69o-8OoG-3WNo-9ens-GBD2-vrqu-yRHDUB
PV Status             allocatable
Total PE / Free PE    127 / 63

# Before removing Volume Group remember that data (if any) won't be recoverable. Take into
# account any filesystem/logical volume belonging to volume group. Such is my case; I will
# destroy volume group and all related objects

vgremove $VG
   Do you really want to remove volume group "testvg" containing 1 logical volumes? [y/n]: y
   Can't remove open logical volume "testlv"

df -h
   [...]
   /dev/mapper/testvg-testlv
                     248M   11M 226M   5% /testmntpt

umount /testmntpt

rmdir /testmntpt

vgremove $VG
   Do you really want to remove volume group "testvg" containing 1 logical volumes? [y/n]: y
   Do you really want to remove active logical volume testlv? [y/n]: y
   Logical volume "testlv" successfully removed
   Volume group "testvg" successfully removed