From: Ray Schafer (ray.schafer@VERITAS.COM)
Date: Mon Jan 27 2003 - 12:58:36 EST
You will have to make use of the .1 device and tctl. For example, if the
tape drive is rmt0, the no-rewind device is rmt0.1. If you want to maintain
several backups on the tape, you need to isue the tctl fommand to
fast-forward to the end of the images to append a new one, or fast-forward
to the image you want to restore and restore from it. The tctl takes a
device file as an argument to the -f flag. Use /dev/rmtX.1 as the device
file, where X is the rmt device number.
If you want to position the tape head to the end of the 3rd image, you would
do: "tctl -f /dev/rmt0.1 fsf 3". Then you can backup to /dev/rmt0.1 and it
will create a 4th image.
-----Original Message-----
From: Marshall Lucas [mailto:mlucas@petra.com]
Sent: Monday, January 27, 2003 10:35 AM
To: aix-l@Princeton.EDU
Subject: Differential backups....
I am trying to implement a differential backup of my drives using one tape
per week to house the differentials. I want them stored back-to-back on the
tape but I don't see any way to tell the backup command to do this. I have
looked at the backup level which will do the differential part, but how do I
keep the tape from rewinding each time?
-- Marshall Lucas
-- IT Systems Analyst
-- EDI Specialist
-- Petra Industries, Inc.
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