• Disk Layout

  Keep two slides of 100MB available on each disk for the metadb state replicas.

• Duplicate the disk layout

   # prtvtoc /dev/rdsk/cXXdXXdXXs2 | fmthard –s - /dev/rdsk/cYYdYYtYYs2 

• Create the metadb replicas

  Use the following commands to create the replicas on each disk.

  # metadb –a –f –c 2 /dev/rdsk/cXXdXXtXXsX
  # metadb –a –c 2 /dev/rdsk/cYYdYYtYYsY 

• Setup a mirror of a filesystem that can be umounted

   # umount /your_fs
   # metainit d10 1 1 cXXdXXtXXsX
   # metainit d20 1 1 cYYdYYtYYsX
   # metainit –m d30 d10
   # metattach d30 d20

  Use “metastat” to verify when the disk syncing completed. Update “/etc/vfstab” to the new created mirror “/dev/md/(r)dsk/d01 and remount the filesystem.

   # mount /your_fs 

• Setup a mirror of a filesystem that can not be umounted

   # metainit –f d11 1 1 cXXdXXtXXsX
   # metainit d21 1 1 cYYdYYtYYsY
   # metainit –m d02 d11
   

  Update “/etc/vfstab” to the new created mirror “/dev/md/(r)dsk/d02 and reboot the system.
  After the system is rebooted attach the second sub-mirror.

   # metattach d31 d21 

  Use metastat to verify the syncing, don’t reboot the system until the syncing completed.

• Setup a mirror of the swapspace

  See “Setup a mirror of a filesystem that can not be umounted”

• Setup a mirror of the root file system

   # metainit d12 1 1 root_device
   # metainit d22 cYYdYYtYYsY
   # metainit –m d33 d12
   # metaroot d03
   

  The metaroot command will update /etc/vfstab, verify that “/” is set to the new created mirror. Sync the filesystems and reboot the system.

   # sync; sync # reboot 

  When the system is rebooted attach the second submirror

   # metattach d33 d22 

• Crashdump device

  Update your crashdump device to the mirrored swap device.

   # dumpadm -d swap 

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