From: Leon Kazakin (leonk@date.com)
Date: Tue Jun 24 2003 - 10:35:51 EDT
I'm forwarding Ric's answer which sums it up nicely.
Thank you all.
Leon
-----Original Message-----
From: Ric Anderson
Make a ufsdump of all file systems on the boot device,
e.g.
ufsdump 0f /dev/rmt/0cn /
ufsdump 0f /dev/rmt/0cn /var
will back up / and /var as two files on a single tape.
Next run prtvtoc on the disk containing /, e.g.
prtvtoc /dev/rdsk/c0t0d0s0 >somefile
and print that file and store the hard copy with the
tape.
When the bad day happens, replace the system disk,
boot from the installation cdrom
boot cdrom -sw
which gets you a root prompt. Now run format, select
the newly installed disk, and use the prtvtoc output
to re-enter the partition table, and write that to the
disk & exit format. Next, newfs the partitions (2 in
this case), e.g.
newfs /dev/rdsk/c0t0d0s0 # assuming / on slice 0
newfs /dev/rdsk/c0t0d0s3 # assuming /var on slice 3
Then
mount -o logging /dev/dsk/c0t0d0s0 /mnt
cd /mnt
ufsrestore -rf /dev/rmt/0cn
# note tape is now at start of second dump
cd /
rm restoresymtable
umount /mnt
cd /usr/platform/`uname -i`/lib/fs/ufs
installboot bootblk /dev/rdsk/c0t0d0s0
cd /
mount -o logging /dev/rdsk/c0t0d0s3 /mnt
cd /mnt
ufsrestore -rf /dev/rmt/0cn
cd /
rm restoresymtable
umount /mnt
Now all the bits are back and the boot block is restored so
reboot
and the system should come up on the new disk.
AIX sysboot is easier, but I've restored and/or clones dozens of Solaris
boot disks over the last 7 or 8 years using variants of this theme
(sometimes the dump was on an NFS mounted disk) with no problems.
Cheers,
Ric Anderson
> -----Original Message-----
> What's the best way to backup OS, i.e. Solaris 8 on 220, 280,
> 450, 6500?
>
> I mean in case the server's boot disk is gone or the server itself is
> gone and I have to re-build it.
>
> Is there a bootable tape utility like with AIX and HP?
>
> I don't think so, so please point me in the direction of recovery
> procedures.
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