How to Restore the Root (/) File System (Solaris Volume Manager)

Use this procedure to restore the root (/) file systems to a new disk, such as after replacing a bad root disk. The node being restored should not be booted. Ensure that the cluster is running without errors before performing the restore procedure.

Because you must partition the new disk by using the same format as the failed disk, identify the partitioning scheme before you begin this procedure, and re-create file systems as appropriate.

The phys-schost# prompt reflects a global-cluster prompt. Perform this procedure on a global cluster.

This procedure provides the long forms of the Sun Cluster commands. Most commands also have short forms. Except for the long and short forms of the command names, the commands are identical. For a list of the commands and their short forms, see Appendix B, Sun Cluster Object-Oriented Commands.

1. Become superuser or assume a role that provides solaris.cluster.modify RBAC authorization on a cluster node with access to the disk sets to which the node to be restored is also attached.

   Use a node other than the node that you are restoring.

2. Remove the hostname of the node being restored from all metasets.

   Run this command from a node in the metaset other than the node that you are removing. Because the recovering node is offline, the system will display an RPC: Rpcbind failure - RPC: Timed out error. Ignore this error and continue to the next step.

   # metaset -s setname -f -d -h nodelist

   -s setname

   Specifies the disk set name.

   -f

   Deletes the last host from the disk set.

   -d

   Deletes from the disk set.

   -h nodelist

   Specifies the name of the node to delete from the disk set.

3. Restore the root (/) and /usr file systems.

   To restore the root and /usr file systems, follow the procedure in Chapter 26, Restoring UFS Files and File Systems (Tasks), in System Administration Guide: Devices and File Systems. Omit the step in the Solaris OS procedure to reboot the system.

   ---

   Note –

   Ensure that you create the /global/.devices/node@nodeid file system.

   ---

4. Reboot the node in multiuser mode.

   # reboot

5. Replace the disk ID.

   # cldevice repair rootdisk

6. Use the metadb(1M) command to re-create the state database replicas.

   # metadb -c copies -af raw-disk-device

   -c copies

   Specifies the number of replicas to create.

   -f raw-disk-device

   Raw disk device on which to create replicas.

   -a

   Adds replicas.

7. From a cluster node other than the restored node add the restored node to all disk sets.

   phys-schost-2# metaset -s setname -a -h nodelist

   -a

   Creates and adds the host to the disk set.

   The node is rebooted into cluster mode. The cluster is ready to use.

Example 11–6 Restoring the Root (/) File System (Solaris Volume Manager)

The following example shows the root (/) file system restored to the node phys-schost-1 from the tape device /dev/rmt/0. The metaset command is run from another node in the cluster, phys-schost-2, to remove and later add back node phys-schost-1 to the disk set schost-1. All other commands are run from phys-schost-1 . A new boot block is created on /dev/rdsk/c0t0d0s0, and three state database replicas are recreated on /dev/rdsk/c0t0d0s4 .

[Become superuser or assume a  role that provides solaris.cluster.modify RBAC authorization on a cluster node other than the node to be restored
.]
[Remove the node from the metaset:]
phys-schost-2# metaset -s schost-1 -f -d -h phys-schost-1
[Replace the failed disk and boot the node:]
Restore the root (/) and /usr file system using the procedure in the Solaris system administration documentation
 [Reboot:]
# reboot
[Replace the disk ID:]
# cldevice repair /dev/dsk/c0t0d0
[Re-create state database replicas:]
# metadb -c 3 -af /dev/rdsk/c0t0d0s4
[Add the node back to the metaset:]
phys-schost-2# metaset -s schost-1 -a -h phys-schost-1