ufsrestore and DR

[kozlow]

I am testing my DR procedure for a SUNFIRE V100 running 9. My v100 does not have a tape drive, so I backup each individual filesystem as follows:

ufsdump 0cuf - / | rsh PAIX5 dd of=/dev/rmt0.1 obs=1024
ufsdump 0cuf - /var | rsh PAIX5 dd of=/dev/rmt0.1 obs=1024
ufsdump 0cuf - /etc | rsh PAIX5 dd of=/dev/rmt0.1 obs=1024

where PAIX5 is an IBM RS6000 with an 8mm tape unit. No problems here. If I wanted to recovery my system, can I do the following:

OK boot cdrom -s
# mount /dev/dsk/c0t2d0s0 /a
# cd /a
# rm -r /a/*
# rsh PAIX5 dd if=/dev/rmt0.1 ibs=1024 | ufsrestore rvxf -
then
# unmount /a
# mount /dev/dsk/c0t2d0s5 /a
repeating the process for each slice/filesystem.

 

[julianbarnett]

Your first problem will be networking since you do not have a valid IP address, nor does Solaris know the ip address or name of the PAIX5 server. You should be able to overcome this by bringing your interface up and setting a default gateway if required. You will probably need to refer to PAIX5 by IP adress rather than name.

Secondly - you may need to reformat and run mkfs on your disk if it has been replaced. You don't need to unmount the /a each filesystem simply mount /a/var /a/etc etc.

Remember to call installlboot after recovering root to replace the bootblk if the disk has been replaced.