Managing Serviceguard Seventeenth Edition, First Reprint December 2009

This command takes over ownership of all the disks in disk group dg_01, even though
the disk currently has a different host ID written on it. The command writes the current
node’s host ID on all disks in disk group dg_01 and sets the noautoimport flag for the
disks. This flag prevents a disk group from being automatically re-imported by a node
following a reboot. If a node in the cluster fails, the host ID is still written on each disk
in the disk group. However, if the node is part of a Serviceguard cluster then on reboot
the host ID will be cleared by the owning node from all disks which have the
noautoimport flag set, even if the disk group is not under Serviceguard control. This
allows all cluster nodes, which have access to the disk group, to be able to import the
disks as part of cluster operation.
The control script also uses the vxvol startall command to start up the logical
volumes in each disk group that is imported.
How Control Scripts Manage VxVM Disk Groups 295