Disk Mirror Boot Problem

From: Paul McGee (Paul.McGee@eirteic.com)
Date: Wed Jan 17 2007 - 12:03:56 EST


Hi Gurus,
I have Solaris 9 installed on a SunFire 280R with two 72GB hard drives and
have mirroring setup between the 2 disks. My root disk is called disk and my
second disk is mirror. My boot-device is "disk mirror cdrom net". All seemed
to go ok and I was able to pull each disk out in turn and the other disk
booted up no problems at all. Later I created some files on my root disk and
decided I would pull out my root disk to check the data was on my mirror but
when it went to boot from mirror I got the following errors. d0 is my root
filesystem mirror.

e_ddi_get_dev_info: Illegal major device number <-1>WARNING: md d0: open error
o
n (Unavailable)
e_ddi_get_dev_info: Illegal major device number <-1>WARNING: md d0: open error
o
n (Unavailable)
Cannot mount root on /pseudo/md@0:0,0,blk fstype ufs

panic[cpu0]/thread=140a000: vfs_mountroot: cannot mount root

0000000001409970 genunix:vfs_mountroot+70 (0, 0, 0, 200, 1457ef0, 0)
  %l0-3: 000000000144b800 000000000144b800 0000000000002000 0000000001495780
  %l4-7: 000000000149b400 0000000001411e58 000000000144c000 000000000144f000
0000000001409a20 genunix:main+90 (1409ba0, f005a4d8, 1409ec0, 38fc6c, 2000,
500)

  %l0-3: 0000000000000001 000000000140a000 0000000001413018 0000000000000000
  %l4-7: 0000000078002000 0000000000398000 00000000014a3f58 0000000001067a00

When I powered off and replaced the disk and rebooted again it booted from
disk no problems and when I did a "reboot mirror" it went and booted from the
mirror again with no problems. If I pull out the mirror disk the root disk
boots without any problems so the issue only arrises when I pull out the root
disk. Like I said earlier I was able to pull out disks without any errors
before and all thats changed has been the creation of a few small files on my
root disk. Anyone have any ideas why this would happen at this stage? Any help
would be greatly appreciated.
Thanks in advance,
Paul

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