Booting from Mirror Disk (ZFS Filesystem)

Checking the system if root file system is mirrored or not

# zpool status rpool
config:

NAME STATE READ WRITE CKSUM
rpool ONLINE 0 0 0
mirror-0 ONLINE 0 0 0
c1t0d0s0 ONLINE 0 0 0
c1t1d0s0 ONLINE 0 0 0


You can see c1t1d0s0 is root mirror disk

If pool was attached later please execute following command to make it bootable

# installboot -F zfs /usr/platform/`uname -i`/lib/fs/zfs/bootblk /dev/rdsk/c1t1d0s0


Changing use-nvramrcvalue for using eeprom feature from the system


Check the value
# eeprom use-nvramrc?
use-nvramrc?=false

Set to true

# eeprom use-nvramrc?=true

Check the value

# eeprom use-nvramrc?
Getting device Information and configure it

# ls -l /dev/dsk/c1t1d0s0
lrwxrwxrwx 1 root root 49 Feb 11 2010 /dev/dsk/c1t1d0s0 ->../../devices/pci@400/pci@0/pci@8/scsi@0/sd@1,0:a

In the above highlighted output, remove /devices and replace disk in the place sd
Like
/pci@400/pci@0/pci@8/scsi@0/disk@1,0

Enter following command to create root mirror devalias

# eeprom nvramrc="devaliasrootmirror /pci@400/pci@0/pci@8/scsi@0/disk@1,0"


Bring the system to ok Prompt and verify configuration

# init 0

ok devalias ( to verify rootmirror is created)

rootmirror /pci@400/pci@0/pci@8/scsi@0/disk@1,0
primary-vds0 /virtual-devices@100/channel-devices@200/virtual-disk-server@0
primary-vswp0 /virtual-devices@100/channel-devices@200/virtual-network-switch@0
primary-vswp1 /virtual-devices@100/channel-devices@200/virtual-network-switch@1
primary-vcc0 /virtual-devices@100/channel-devices@200/virtual-console-concentrator@0
ttya /ebus@c0/serial@0,ca0000
net3 /pci@500/pci@0/pci@8/network@0,3
net2 /pci@500/pci@0/pci@8/network@0,2
net1 /pci@500/pci@0/pci@8/network@0,1
net0 /pci@500/pci@0/pci@8/network@0
net /pci@500/pci@0/pci@8/network@0
cdrom /pci@400/pci@0/pci@1/pci@0/usb@0,2/hub@4/device@4/storage@0/disk@0:f
disk15 /pci@400/pci@0/pci@8/scsi@0/disk@f
disk14 /pci@400/pci@0/pci@8/scsi@0/disk@e
disk13 /pci@400/pci@0/pci@8/scsi@0/disk@d
disk12 /pci@400/pci@0/pci@8/scsi@0/disk@c
disk11 /pci@400/pci@0/pci@8/scsi@0/disk@b
disk10 /pci@400/pci@0/pci@8/scsi@0/disk@a
disk9 /pci@400/pci@0/pci@8/scsi@0/disk@9
disk8 /pci@400/pci@0/pci@8/scsi@0/disk@8
disk7 /pci@400/pci@0/pci@8/scsi@0/disk@7
disk6 /pci@400/pci@0/pci@8/scsi@0/disk@6
disk5 /pci@400/pci@0/pci@8/scsi@0/disk@5
disk4 /pci@400/pci@0/pci@8/scsi@0/disk@4
disk3 /pci@400/pci@0/pci@8/scsi@0/disk@3
disk2 /pci@400/pci@0/pci@8/scsi@0/disk@2
disk1 /pci@400/pci@0/pci@8/scsi@0/disk@1
disk0 /pci@400/pci@0/pci@8/scsi@0/disk@0
disk /pci@400/pci@0/pci@8/scsi@0/disk@0
scsi /pci@400/pci@0/pci@8/scsi@0
virtual-console /virtual-devices/console@1


Boot from the roor mirror

ok boot rootmirror

Boot device: /pci@400/pci@0/pci@8/scsi@0/disk@1,0 File and args: