FATAL: system is not bootable, boot command is disabled

In system administration job normally no news is a good news... Today I was working with Solaris MPxIO on V890 server model & due to some unknown MPxIO misconfiguration under /kernel/drv/fp.conf - the whole system got messed up & I left with option of rebuilding the whole system.

Here is the crash pattern after MPxIO misconfiguration -

Rebooting with command: boot



Boot device: /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@w21000014c3dbf465,0:a File and args:
SunOS Release 5.10 Version Generic_142900-01 64-bit
Copyright 1983-2009 Sun Microsystems, Inc. All rights reserved.
Use is subject to license terms.
NOTICE: error reading device label


NOTICE:


***************************************************
* This device is not bootable!                    *
* It is either offlined or detached or faulted.   *
* Please try to boot from a different device.     *
***************************************************


NOTICE: spa_import_rootpool: error 19
Cannot mount root on /pci@8,600000/SUNW,qlc@2/fp@0,0/disk@w21000014c3dbf465,0:a
fstype zfs
panic[cpu7]/thread=180e000: vfs_mountroot: cannot mount root
000000000180b950 genunix:vfs_mountroot+358 (800, 200, 0, 1872800, 189b400, 18cbc00)


Thank god that the system was not rolled out to production yet.

When I realized the system is crashed & I may need to boot the system into single user mode for maintenance I logged onto the SC and got to my console, and type boot as one does.


{1} ok boot
FATAL: system is not bootable, boot command is disabled
Ohh.. no.. What the mess...

There are many errors which you never imagine or unseen throughout your tiny professional life & I hit this one today, for the first time in my 6 years of professional life.

Just in case you happen to hit this horrible error then here is the fix -

set auto-boot? to false, reset the box, and then set it to true and finally boot  as shown below -

{1} ok setenv auto-boot? false
auto-boot? = false
{1} ok reset-all
SC Alert: Host System has Reset
Sun Fire V890, No Keyboard
Copyright 2007 Sun Microsystems, Inc. All rights reserved.
OpenBoot 4.22.34, 65536 MB memory installed, Serial #XXXXX.
Ethernet address X:XX:XX:XX:XX:XX, Host ID: XXXXX.
{1} ok setenv auto-boot? true

auto-boot? = true
{1} ok boot net - install nowin

.......... lots of output ........

This will rebuild your system now.

One advice - BE ALWAYS CAREFUL WHILE WORKING WITH MPxIO. YOUR BEST FRIEND MAY TURN INTO WORST ENEMY IF YOU HURT HIM...