I guess the question is how were the tapes made? mksysb, backup, tar, cpio?
if you use the dd...you are not getting the creation of new logical volumes that are functioning..........and how would you know where to stop and start?
I think you are talking about either restoring the logical volumes or.... getting the size of the logical volumes and then creating them on your new disk (under a different name) and then restoring the data to the newly created logical volume?
If they are mksysb
Get sizes of old logical volumeS:
make sure that the tape is rewound. Enter:
tctl -f /dev/rmt0 rewind
Restore the image.data file from the second image of the mksysb tape. Enter:
restore -s2 -xqvf /dev/rmt0.1 ./image.data
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THEN after you create the new lvs....restore the data?
Restoring individual files from a mksysb tape
1.To restore individual files or directories from a mksysb tape, find out the blocksize of the fourth image. To
obtain this information, run the following commands:
cd /tmp
tctl -f /dev/rmt# rewind (# to be replaced by a number)
chdev -l rmt# -a block_size=512
restore -s2 -xqdvf /dev/rmt#.1 ./tapeblksz
cat ./tapeblksz
The output that is given is the blocksize to which the tape drive was set when the mksysb was made.
2.Next, set the blocksize of the tape drive accordingly by running the following command:
chdev -l rmt# -a block_size=[number in the
./tapeblksz file]
3.Restore the files or directories by running the following commands:
cd / (if the file is to be restored to its original place)
tctl -f /dev/rmt# rewind
restore -s4 -xqdvf /dev/rmt#.1 ./dir/filename (for one file)
OR
restore -s4 -xqdvf /dev/rmt#.1 ./dir (for all files in dir)
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Perhaps I did not understand your question....but it is based on how the tapes were backed up...........I believe.
