VxVM Subcluster Installation

Sun Cluster software now supports coexistence of the Solstice DiskSuite and VERITAS Volume Manager (VxVM) volume managers in the same cluster or on the same cluster node. The following guidelines describe when this volume manager coexistence is and is not supported.

• If you use Solstice DiskSuite software, you must install it on all nodes of the cluster, regardless of whether you use VxVM on some nodes to manage disks.

• If you use VxVM and enable the VxVM cluster feature, you must install and license VxVM on all nodes of the cluster.

• If you use VxVM and do not enable the VxVM cluster feature, you only need to install and license VxVM on the nodes which are attached to storage devices which VxVM will manage.

• If you install both Solstice DiskSuite software and VxVM on a node, you must use Solstice DiskSuite software to manage disks local to each node (such as the root disk) and you must use VxVM to manage all shared disks.

To support VxVM subcluster installation, perform the following steps on each cluster node that is not installed with VxVM.

Do not create any shared disk groups until you have performed this procedure on all non-VxVM cluster nodes.

1. Become superuser on a node in the cluster that you do not intend to install with VxVM.

2. Create /dev/vx/dsk and /dev/vx/rdsk directories on the node. These directories must be owned by root and have world read-write-execute permissions.

   # mkdir /dev/vx # mkdir /dev/vx/dsk # mkdir /dev/vx/rdsk # chmod a+rwx /dev/vx # chmod a+rwx /dev/vx/dsk # chmod a+rwx /dev/vx/rdsk

3. Add a vxio entry to the /etc/name_to_major file on the node.

   The entry, in particular the value of the major number nnn, must be identical to the entries on those nodes that are installed with VxVM.

   # vi /etc/name_to_major vxio nnn

   ---

   Note -

   If you later install VxVM on this node, you must first remove the vxio entry before you begin VxVM installation.

   ---

4. Initialize the vxio entry.

   # drvconfig -b -i vxio -m nnn

   ---

   Note -

   The next time you reboot this node, you might see messages similar to the following. These messages are harmless and can be ignored.

   ---

   /sbin/rcS: /usr/sbin/vxrecover: not found /etc/rc2.d/S75MOUNTGFSYS: /usr/sbin/vxdctl: not found

5. Repeat Step 1 through Step 4 on all other nodes in the cluster that are not installed with VxVM.