From: Tom Britton (Tom.Britton@Fronde.com)
Date: Tue Feb 12 2008 - 19:55:24 EST
Hi all
Problem solved. This is what was needed:
I rebooted with reconfiguration (boot -r). This recreated the
/devices/pseudo/md@0:admin "file" (and probably the /dev/md/admin link to it).
This fixed the problem running the "meta" commands and allowed me to
re-establish the logical devices and mirrors.
I still don't know what causes the reconfiguration to create the
/devices/pseudo/md@0:admin file but suspect the /kernel/drv/md.conf file is
what does it. You might need to copy the /kernel/drv/md.conf file from
another machine (with appropriate editing) or re-install the SUNWmdr package
to get a clean one
Hope this is of help to somebody elsewhere sometime.
Regards,
Tom
> -----Original Message-----
> From: Tom Britton
> Sent: Tuesday, 12 February 2008 11:05 a.m.
> To: SunManagers (E-mail)
> Subject: Solaris 10 Volume Manager hosed
>
> Hi all
>
> Somehow I've managed to lose the /devices/pseudo/md@0:admin entry on one of
my Sun Fire V240 systems. Volume Manager was working fine, with a simple set
of mirrored filesystems, including root (two physical disks). It had
developed a fault that I was trying to fix. I've got the system going using
'normal' disk devices on one disk, but /devices/pseudo/md@0:admin no longer
exists on either disk.
>
> How do I get it back? I tried a mknod, but this failed saying the directory
was read-only. At the next opportunity (tomorrow morning), I'm going to try a
'boot -r', having reinstalled the SUNWmdr package.
>
> What triggers the reconfigure to recreate the md entry? A
/kernel/drv/md.conf file exists, but all it contains is a comment that its
contents are now obsolete and don't do anything.
>
> Would removing and re-installing Volume Manager be likely to help? If so,
what packages constitute Volume Manager? I've found SUNWmdr, SUNWmdu,
SUNWmdar, SUNWmau. Any others?
>
> Any help/suggestions gratefully accepted.
>
>
> Regards,
> Tom
>
> Tom Britton | Consultant - Fronde Always | Fronde Systems Group Ltd | 3
Queens Wharf, PO Box 11545, Wellington 6142, New Zealand | p. +64 4 439 4018 |
m. +64 21 995 967 | f. +64 4 460 5703 | e. tom.britton@fronde.com |
www.fronde.com
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