Hello Managers,
This is something I have done successfully before but for some reason
it is failing today.
I want to restore the root advfs filesystem on a 4.0d system. I did
this successfully on the same system last month, however, when I did
it last month, I mistakenly named the root advfs fileset "roottmp"
with advfs domain "root_domain" (don't ask how I did such a thing.
Just accept that I did it...). Surprisingly it works even with that
fileset name. However, the backups fail because the routine tries to
create a clone of "root_domain#root" which doesn't exist. Also, I
know that the wrong fileset name will cause me further headaches
ahead. So even though the system is functional, I wanted to make it right.
I tried today to restore from another tape vdump and I am getting the
problem I will show below. Unfortunately, I am not at the site where
the restore was taking place and was working with someone who was
only my hands-on, so I don't have all the exact error messages.
Here is the procedure I was following:
1) Booting from the 4.0g CD ( the version we are running is 4.0d but
this is the only CD they have on the site. It worked last month)
2) Upon starting X, a message is displayed warning that this version
of the operating system has different disk partition size
requirements. We click OKAY.
3) It opens the Installation Window displaying things like SETUP
DONE, VIEW SOFTWARE, etc. We are selecting UNIX SHELL.
4) At the UNIX shell, we cd to /dev and MAKEDEV rz8 (the current
system disk and the one we want to restore to) and MAKEDEV tz21 (the
tape device). Both commands successfully create the device files.
5) I can read the disklabel of rz8 and have even successfully
re-written the disk label with the -R option. So I feel comfortable
that the disk is accessible and the device files were created.
6) We try to create the root domain on /dev/rz8a with
"mkfdmn /dev/rz8a root_domain". This fails with the following message:
/dev/rrz8a is an invalid device or cannot be opened
The disklabel for /dev/rrz8a cannot be updated
Quitting
Mkfdmn: can't create new domain 'root_domain'
7) We have tried cd'ing in and out of /dev and /var and /.
8) We have tried various switches in mkdfmn like -o and -r. We have
tried using the raw device /dev/rrz8a.
9) We have tried reading the current disklabel and re-writing with
disklabel -Rrt advfs rz8 <file? boot.advfs which succeeds but does
not solve the mkdfmn problem.
Does anyone have any ideas?
This is really bizarre since I did the same procedure last month
successfully. The only difference was that last month, the disk we
were restoring to was a replacement disk with no operating system on it.
It looks like something has opened the rz8a partition (since it is
obviously a valid device) but I don't know how to determine what
process has it opened.
Any help would be appreciated. I am at a lost here.
Thanks in advance.
John
Received on Fri May 23 2008 - 12:29:09 NZST