How to Restore a Nonencapsulated Root (/) File System (Veritas Volume Manager)

Use this procedure to restore a nonencapsulated root (/) file system to a node. The node being restored should not be booted. Ensure the cluster is running without errors before performing the restore procedure.

Because you must partition the new disk using the same format as the failed disk, identify the partitioning scheme before you begin this procedure, and recreate 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. Replace the failed disk on the node where the root file system will be restored.

   Refer to disk replacement procedures in the documentation that shipped with your server.

2. Boot the node that you are restoring.

   • If you are using the Solaris OS CD, at the OpenBoot PROM ok prompt, type the following command:

     ok boot cdrom -s

   • If you are using a Solaris JumpStart server, at the OpenBoot PROM ok prompt, type the following command:

     ok boot net -s

3. Create all the partitions and swap on the root disk by using the format command.

   Re-create the original partitioning scheme that was on the failed disk.

4. Create the root (/) file system and other file systems as appropriate, using the newfs command.

   Re-create the original file systems that were on the failed disk.

   ---

   Note –

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

   ---

5. Mount the root (/) file system on a temporary mount point.

   # mount device temp-mountpoint

6. Restore the root (/) file system from backup, and unmount and check the file system.

   # cd temp-mountpoint # ufsrestore rvf dump-device # rm restoresymtable # cd / # umount temp-mountpoint # fsck raw-disk-device

   The file system is now restored.

7. Install a new boot block on the new disk.

   # /usr/sbin/installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk raw-disk-device

8. Reboot the node in multiuser mode.

   # reboot

9. Update the device ID.

   # cldevice repair /dev/rdsk/disk-device

10. Press Control-d to resume in multiuser mode.

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

Example 12–8 Restoring a Nonencapsulated Root (/) File System (Veritas Volume Manager)

The following example shows a nonencapsulated root (/) file system that is restored to the node phys-schost-1 from the tape device /dev/rmt/0.

[Replace the failed disk and boot the node:]

Boot the node from the Solaris OS CD. At the OpenBoot PROM ok prompt, type the following command:

ok boot cdrom -s
...
[Use format and newfs to create partitions and file systems]
[Mount the root file system on a temporary mount point:]
# mount /dev/dsk/c0t0d0s0 /a
[Restore the root file system:]
# cd /a
# ufsrestore rvf /dev/rmt/0
# rm restoresymtable
# cd /
# umount /a
# fsck /dev/rdsk/c0t0d0s0
[Install a new boot block:]
# /usr/sbin/installboot /usr/platform/`uname \
-i`/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s0

[Reboot:]
# reboot
[Update the disk ID:]
# cldevice repair /dev/rdsk/c0t0d0