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can not fsck /opt (encapsulated into VM)

Posted on 2002-07-10
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Last Modified: 2013-12-27
I have lost my /opt (ie I can not fsck it) because it is encapsulated into volume manager. And volume manager is sitting in the /opt, which means that volume manager is unavailable because, it's sitting in a filesystem which needs, to be fixed... And it can not be fixed becuase  VM is not running... It's a vicious circle. Please help, I have a full day downtime!! I tried logging in in single user mode (using cdrom), but still I can't get through!!
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Question by:biki
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by:Otetelisanu
ID: 7145398
You can boot from cdrom (eprom modus and
boot cdrom)
After boot you can mount /yourdisc /a
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Expert Comment

by:dforster
ID: 7146362
Have you tried to unencapsulate the disk ?

Mount the disk from a cdrom kernel

ie boot 1a / stop a

boot cdrom

mount /dev/dsk/cxtxdxs0 /mnt

cd /mnt/etc

vi /etc/vfstab

edit the entries / /opt /var to cxtxdxsx and comment out the /dev/vx/ entries

cd /mnt/etc/vx/reconfig.d/state.d

rm root-done

touch install-db

cd /mnt/etc/init.d

mv the volume manager start scripts

reboot on the disk

then fsck /opt

If you require further instructions one will send them.

Then once rebooted fix the re - encapsulate

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by:k.kidambi
ID: 7188816
hi, Biki

Following may help you in fixing your problem.

boot cdrom in single user mode.

boot cdrom -s

mount your old root device.

mount /dev/dsk/c0t0d0s0 /mnt

cat /mnt/etc/vfstab.prevm

This will have your original entry of your /opt

do an fsck on that /dev/rdsk/c0t0d0s? (on the /opt) device.

This should probably fix your problem.

Try your luck
Kidambi
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by:tfewster
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