1. c0t0d0s2 represents the first system disk (boot)
  2. c0t1d0s2 represents the second disk (mirror)

Duplicate the label's content from the boot disk to the mirror disk:

# prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s - /dev/rdsk/c0t1d0s2

Create replicas of the metadevice state database:

# metadb -a -c3 -f c0t0d0s4 c0t1d0s4
# metadb

Option -f is needed because it is the first invocation/creation of metadb(1m).

Creation of metadevices:

# metainit -f d10 1 1 c0t0d0s0
# metainit -f d11 1 1 c0t0d0s1
# metainit -f d13 1 1 c0t0d0s3
# metainit -f d16 1 1 c0t0d0s6
#
# metainit d20 1 1 c0t1d0s0
# metainit d21 1 1 c0t1d0s1
# metainit d23 1 1 c0t1d0s3
# metainit d26 1 1 c0t1d0s6

Option -f is needed because the file systems created on the slice we want to initialize a new metadevice are already mounted.

Create the first part of the mirror:

# metainit d0 -m d10
# metainit d1 -m d11
# metainit d3 -m d13
# metainit d6 -m d16
#
# cp /etc/vfstab /etc/vfstab.beforesvm
# metaroot d0

Don't forget to edit /etc/vfstab in order to reflect the other metadevices:

  • s@/dev/dsk/cXtYdZsN@/dev/md/dsk/dN@
  • s@/dev/rdsk/cXtYdZsN@/dev/md/rdsk/dN@

Install the boot block code on the alternate boot disk and set it in the OpenBoot Prom (OBP):

# installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t1d0s0
# eeprom boot-device="disk disk1 net"   /* Or just "disk disk1". */

Reboot on the new metadevices (the operating system will now boot encapsulated):

# shutdown -y -g 0 -i 6

Attach the second part of the mirror:

# metattach d0 d20
# metattach d1 d21
# metattach d3 d23
# metattach d6 d26

Verify all:

# metastat -p
# metastat | grep \%

Modify the system dump configuration:

# mkdir /var/crash/`hostname`
# chmod 700 /var/crash/`hostname`
# dumpadm -s /var/crash/`hostname`
# dumpadm -d /dev/md/dsk/d1