Example--Restoring a root (/) File System That Was on a Metadevice (Solstice DiskSuite/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 metaset 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 on a cluster node with access to the metaset, 
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:]
ok boot cdrom -s
[Use format and newfs to recreate 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
[Install a new boot block:]
# /usr/sbin/installboot /usr/platform/`uname \
-i`/lib/fs/ufs/bootblk /dev/rdsk/c0t0d0s0
[Remove the lines in /temp-mountpoint/etc/system file for MDD root information:]
* Begin MDD root info (do not edit)
forceload: misc/md_trans
forceload: misc/md_raid
forceload: misc/md_mirror
forceload: misc/md_hotspares
forceload: misc/md_stripe
forceload: drv/pcipsy
forceload: drv/glm
forceload: drv/sd
rootdev:/pseudo/md@0:0,10,blk
* End MDD root info (do not edit)
[Edit the /temp-mountpoint/etc/vfstabfile]
Example: 
Change from--
/dev/md/dsk/d10   /dev/md/rdsk/d10    /      ufs   1     no       -

Change to--
/dev/dsk/c0t0d0s0 /dev/rdsk/c0t0d0s0  /usr   ufs   1     no       -
[Unmount the temporary file system and check the raw disk device:]
# cd /
# umount /a
# fsck /dev/rdsk/c0t0d0s0
[Reboot in single-user mode:]
# reboot -- "-s"
[Replace the disk ID:]
# scdidadm -R /dev/dsk/c0t0d0
[Recreate state database replicas:]
# metadb -c 3 -af /dev/rdsk/c0t0d0s4
# reboot
Type CTRL-d to boot into multiuser mode.
[Add the node back to the metaset:]
phys-schost-2# metaset -s schost-1 -a -h phys-schost-1

How to Restore a Non-Encapsulated root (/) File System (VERITAS Volume Manager)

Use this procedure to restore a non-encapsulated root (/) file system to a node. The node being restored should not be booted. Be sure the cluster is running problem-free before performing the restore procedure.

Note - Since 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.

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 came with your server.

2. Boot the node being restored.

   • If using the Solaris CD-ROM, run the following command:

     ok boot cdrom -s

   • If using a JumpStart server, run the following command:

     ok boot net -s

3. Create all the partitions and swap on the root disk using the format(1M) command.

   Recreate 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(1M) command.

   Recreate the original file systems that were on the failed disk.

   ---

   Note - Be sure to 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 into single-user mode.

   1. Start the reboot.

      # reboot -- "-s"

      During this boot you will see error or warning messages, ending with the following instruction:

      Type control-d to proceed with normal startup, (or give root password for system maintenance):

   2. Type the root password.

9. Update the disk ID using the scdidadm command.

   # scdidadm -R /dev/rdsk/disk-device

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

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