From: Peter.Stern@weizmann.ac.il
Date: Thu Apr 25 2002 - 05:06:52 EDT
The original query is below. I got suggestions from:
Satish
Murtaza Talawala (to use vdump/vrestore)
Klas Erlandsson
Daniel Lungu
But in the end what worked (my own idea) was to use the dual option in
the mount command:
/ # mount -t advfs -o dual root0#root /root0
Dual mounting a split mirror AdvFS filesystem.
This takes a short while to update the domain's ID.
/ # mount -t advfs -o dual usr0#usr /usr0
Dual mounting a split mirror AdvFS filesystem.
This takes a short while to update the domain's ID.
The dual option enables an AdvFS fileset to be mounted as a domain
volume even though it has the same AdvFS domain ID as a fileset that is
already mounted.
I can't say that I really understand what happened here. I just looked
at all the AdvFS option in the mount command and took a guess.
I guess that by using dd some AdvFS domain ID of the original disk is
also copied to the new disk?
If so, how can I fix this so that I don't need to use the same domain ID
(which sounds potentially dangerous to me)?
Thanks to all who tried to help.
Regards,
Peter
> I used the following commands as single user to clone my system disk:
> disklabel -z rz0
> dd if=/dev/rrz8c of=/dev/rrz0c bs=1024k
>
> This was a 9.1GB disk and dd took about 20-25 minutes and appeared to
> be successful. Both / and /usr are AdvFS filesets. The system is
> v4.0f pk#7. The new disk has the same disklabel as the system disk.
>
> After going to multi-user I tried to mount the new disk:
>
> # mount -t advfs -o rw root0#root /root0
> root0#root on /root0: I/O error
>
> # mount -t advfs -o rw usr0#usr /usr0
> usr0#usr on /usr0: I/O error
>
> The disks linked in /etc/fdmns:
> # ls -l /etc/fdmns/root0
> total 0
>
> lrwxrwxrwx 1 root system 9 Apr 18 14:28 root0 -> /dev/rz0a
> ls -l /etc/fdmns/usr0
> total 0
> lrwxrwxrwx 1 root system 9 Apr 18 14:28 usr0 -> /dev/rz0g
>
> What am I missing here?
>
> Thanks,
> Peter
>
> Peter Stern
> Chemical Physics Department
> Weizmann Institute of Science
> 76100 Rehovot, ISRAEL
>
> email: Peter.Stern@weizmann.ac.il
> phone: 972-8-9342096
> fax: 972-8-9344123
>
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