Re: mksysb syntax - Newbie
- From: "Hajo Ehlers" <service@xxxxxxxxxxxxx>
- Date: 21 Mar 2006 00:30:19 -0800
Dolphin wrote:
Hi,
I would like to make a bootable tape that backup the AIX 5.1 system in case
the system disk failed. This tape can be used to restore back to the state
before system disk failed.
I searched the web
(http://www.unet.univie.ac.at/aix/cmds/aixcmds3/mksysb.htm) and found the
command mksysb with a few parameter. In one of the examples:
To generate a system backup and create an /image.data file with map files
(generated by the mkszfile command) to a tape device named /dev/rmt1, enter:
mksysb -m /dev/rmt1
Question: What is a map file?
Short answer :
$ man mkszfile
and simply take a look at the /image.data file.
The /image.data contains the physical and logical layout of the rootvg.
So during a restore from a mksysb the system layout is the same.
One of the reason for that:
- Use the correct disk for restore
- Have logical volumes on the same disk parts as they are before
because of performance configuration reasons
- Can be changed to get a new rootvg layout ( change jfs to jfs2,
pp-size)
and many other.
Keep in mind that these information might DISABLE the installation of
an mksysb on a differnet system because the target system does not
fullfill the requirements by the /image.data file.
hth
Hajo
.
- References:
- mksysb syntax - Newbie
- From: Dolphin
- mksysb syntax - Newbie
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