UNIX Desktop Questions & Answers

Of course, with unix there is always another way if you donot have veritas or disksuite.

Verify that both disk are partitioned alike by using
the format command then choose verify to see the
partitions.

Then if they are alike...

dd if=/dev/rdsk/c0t0d0s0 of=/dev/rdsk/c1t0d0s1

would copy the contents of slice0 on disk0 to slice0 on disk1.
Repeat this for each slice or for each slice that you want mirrored. Of course, the root slice is the most important. After you are done mirroring...try booting off of the mirrored disk...with

boot disk1

from the OK prompt after doing a init 0.

I have done this many times without issues, apart from alittle time to run dd...it works.

Happy mirroring!

Shane

a simple way to do this is via dd and copying the backup slice, usually slice 3.

boot the system in single user mode from a cd.

if disk one is c0t0d0 ( source)
and disk two is c0t1d0 ( target)

then the command would be ....
dd if=/dev/rdsk/c0t0d0s3 of=/dev/rdsk/c0t1d0s3 bs=2000b

rob.

try this one ... should work on any solaris ... (assumes source disk disk0 is c0t0d0 and disk1 is c0t1d0) ... you might also want to add code to modify the /etc/vfstab automatically so you can quickly boot-up with the 2nd disk --- i'll let you handle that part ... test on useless system first though just to be safe ...

Code:

#! /bin/ksh

prtvtoc /dev/rdsk/c0t0d0s2 | fmthard -s - /dev/rdsk/c0t1d0s2
partlist=$(prtvtoc /dev/rdsk/c0t0d0s2 | awk '!/\*/ {print $1}')

for p in $partlist
do
    if [ "$p" != "1" -a "$p" != "2" ]
    then
        newfs /dev/rdsk/c0t1d0s$p < /dev/null
        mount /dev/dsk/c0t1d0s$p /mnt
        cd /mnt
        ufsdump 0uf - /dev/dsk/c0t0d0s$p | ufsrestore rf -
        cd /
        umount /mnt
    fi
done

mount /dev/dsk/c0t1d0s0 /mnt
installboot /usr/platform/`uname -i`/lib/fs/ufs/bootblk /dev/rdsk/c0t1d0s0
umount /mnt

exit 0