AIX non rootvg backup of two system

Hi,
you can use rmt0.1 for that purpose -
savevg -i -f /dev/rmt0.1 [firstvg]
savevg -i -f /dev/rmt0.1 [secondvg]
 
But when restoring take care to correctly position the tape i.e.
mt -f /dev/rmt0.1 fsf 1; restvg...  [secondvg]
wmp

Dear woolmilkporc
is it for two separate LPARs?
as i have already done it but it shows only the second backup.

Hi amirs80,
you're right, the tape position will most probably not "survive" the dLPAR movement of the tape device.
So use for your first LPAR
savevg -i -f  /dev/rmt0 [vg_of_first_lpar]
and for the second
mt -f /dev/rmt0.1 fsf 1;  savevg -i -f /dev/rmt0.1 [vg_of_second_lpar]

and for the third

mt -f /dev/rmt0.1 fsf 2;  savevg -i -f /dev/rmt0.1 [vg_of_third_lpar]
and so on.
Some caveats -
1) Of course you must keep track of which vg is saved at which file position.
2) Note that if you use savevg to backup a rootvg, the tape will contain four images instead of only one, although the tape will not be bootable. The actual backup is the fourth image.
3) Should the tape position actually "survive" the dLPAR movement (I don't think so), use
mt -f /dev/rmt0 rewind
before proceeding.
 4) As opposed to restore, which has an -s flag to indicate the position of the desired backup, restvg lacks this flag, so you must use
mt -f /dev/rmt0.1 fsf 1 ; restvg ...
to find e.g. the backup of your second vg.
 
Good Luck!
 
wmp

 
 
 

it only gives the last vg backup, please help

To be sure ...
you did all the 'mt fsf ...' I suggested?
wmp
 

sorry i don't understand

it gives

# tctl -f /dev/rmt0.1 fsf 1
/dev/rmt0.1 fsf 1 failed: There is an input or output error.
# tctl -f /dev/rmt0.1 fsf 2
/dev/rmt0.1 fsf 2 failed: There is an input or output error.
# tctl -f /dev/rmt0.1 fsf 3
/dev/rmt0.1 fsf 3 failed: There is an input or output error.
# tctl -f /dev/rmt0.1 fsf 4
/dev/rmt0.1 fsf 4 failed: There is an input or output error.