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| Activating a VG when quorum is lost Posted: 14 Mar 2011 01:55 AM PDT Normally, volume groups are automatically activated during system startup. Unless you intentionally deactivate a volume group using vgchange, you will probably not need to reactivate a volume group. However, LVM does require that a "quorum" of disks in a volume group be available. During normal system operation, LVM needs a quorum of more than half of the disks in a volume group for activation. If, during run time, a disk fails and causes quorum to be lost, LVM alerts you with a message to the console, but keeps the volume group active. If there is no other way to make a quorum available, the -q option to the vgchange command will override the quorum check. EXAMPLE: vgchange -a y -q n /dev/vg01 When you replace a disk that was not online when you originally activated the volume group, use the activation command again to attach the now accessible disks to the volume group. EXAMPLE: vgchange -a y /dev/vg01 ======================================================== By Shiroy Pigarez 
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