SUMMARY: Disk Mirror Problem

Hi again,
Thanks to everyone who replied. ie. Brad, Don, Chad, Gordon, Jim, Tim, Thomas,
Darren and Richard. Basically I think my problem was down to taking out the
disks a little too often which in turn put my submirrors on my mirror disk in
the state of "need maintenance" which when I detached, cleared,
re-initialised, reattached and synced with the other submirror allowed me to
reboot from mirror once again with the root disk pulled out. This time my
submirrors residing on my root disk were reading a "need maintenance" status
but are fixable using the previously mentioned proceedure. The reason this
threw me was that I didn't believe this would resolve the issue seeing that
once both disks were in place I could boot back and forth between root disk
and mirror without any problems. I think the moral of the story is not to be
pulling disks out too often and expecting nothing to be affected.
Regards,
Paul

On 17/01/07, Paul McGee <Paul.McGee@eirteic.com> wrote:
> 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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