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From: alok on 22 Sep 2009 15:08
Hi All,

I have faced a weird problem on one of my servers running solaris 8.
The root disks are mirrored using VxVM.

The server got hanged. I do not why. We have to get the server hard
booted. After that the server went into single user mode giving erros
as below.

INIT : not able to write /var/adm/wtmp , not able to write utmp etc.
Even if a give the "W" command it starts giving some ptree not found
errors.When i give df -k , it returns nothing indication only / is
mounted in RO mode.

I noticed that that the rootvol & var volumes were in "enabled
NEEDSYNC " state. I tried a vxvol resync rootvol and same for var
volume also. Now the state of the rootvol is back to enabled active.
but if do a reboot now the problem persists. I have done several FSCK
on the rootvol and the var vol and then tried to remount it with mount
-o remount,rw /dev/vx/dsk/rootvol / and also tried rebooting but no
help.

Can please some help me out of this.

I will be thankful.
From: Zfs.. on 22 Sep 2009 19:07
On Sep 22, 8:08 pm, alok <alok.20...(a)gmail.com> wrote:
> Hi All,
>
> I have faced a weird problem on one of my servers running solaris 8.
> The root disks are mirrored using VxVM.
>
> The server got hanged. I do not why. We have to get the server hard
> booted. After that the server went into single user mode giving erros
> as below.
>
> INIT : not able to write /var/adm/wtmp , not able to write utmp etc.
> Even if a give the "W" command it starts giving some ptree not found
> errors.When i give df -k , it returns nothing indication only / is
> mounted in RO mode.
>
> I noticed that that the rootvol & var volumes were in "enabled
> NEEDSYNC " state. I tried a vxvol resync rootvol and same for var
> volume also. Now the state of the rootvol is back to enabled active.
> but if do a reboot now the problem persists. I have done several FSCK
> on the rootvol and the var vol and then tried to remount it with mount
> -o remount,rw /dev/vx/dsk/rootvol / and also tried rebooting but no
> help.
>
> Can please some help me out of this.
>
> I will be thankful.

Are /var and / separate filesystems ? It looks as though they are.

If they are then,

Did you try the remount for /var ?

mount -o remount,rw /dev/vx/dsk/rootvolvar /var

Then run fsck /var and reboot..





From: alok on 23 Sep 2009 13:15
Hi Cian,

Yes, the / and var are seperate filesystems. I did doing a fsck on
both / & /var after doing a vxvol resync rootvol and then reboot,

Also the remounting the /var does not works also. It fails saying /var
is not mounted , not present in the /etc/mnttab.

Inaddition to this I did the below but it all fails.


Running a fsck on the / FS and /var and reboot. No luck.

· Resync the rootvol, swapvol and var volumes , run a FSCK
again.

· Booting from the secondary disk.

· Disabling the VxVM startup at boot and tried to boot the OS
with only one disk. Change the /etc/system & /etc/vfstab. ( these
changes have been reverted back. )

· Suspecting that the / & /var may be full and that might be
causing the error, we deleted some old logs from the / & /var , again
run FSCK , problem persists.

· Disabled DMP by commenting out the required lines , in the /
kernel/drv/vxdmp.conf. and then rebooted and the system failed to even
boot in the single user mode



Can some please suggest,


Regards
Alok

From: alok on 24 Sep 2009 11:22
any suggestions please ....
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