vgscan Reading all physical volumes. This may take a while... Found volume group "data" using metadata type lvm2 vgextend -vd data /dev/vdc Using volume group(s) on command line. Found same device /dev/vdb with same pvid VViS1rAcC3xxE1DzWM8C6EoAEbfKn5H3 Found same device /dev/vdb with same pvid VViS1rAcC3xxE1DzWM8C6EoAEbfKn5H3 Adding physical volume '/dev/vdc' to volume group 'data' Volume group "data" will be extended by 1 new physical volumes Creating volume group backup "/etc/lvm/backup/data" (seqno 3). Volume group "data" successfully extended