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#1 (**permalink**) 01-05-2008, 10:08 AM

How would I go about moving a mksysb image from one AIX machine to the
other for the purposes of using the second machines tape drive to write
the image?

Background: I have two AIX machines: a P570 and a 520. The 570 has no
built in tape drive and I have a removeable 4/8GB DDS2 SCSI drive I use
in emergencies. I am trying to make an image of an LPAR with a very
large rootvg on the 570 and it is not practical to use close to 10 8G
tapes. The 520 has a DDS4 70G tape drive in it which is also what the
system I am cloning the LPAR from the 570 to be built in.
The 520 is running AIX 5.3, while the 570 LPAR is running 5.2. (I don't
know if this will make a difference).

Any help would be appreciated in this.

#2 (**permalink**) 01-05-2008, 10:08 AM

1. Load the mksysb tape in the tapedrive.
2. Boot with AIX 5.3 CD Rom
3. On the install/recover screen, choose to recover from backup media.
4. It will list the tape device as one of the possible options for
recovery, select it.
5. Recovery will start.

PS: You must boot from CD, as you are installing on a diffrent machine
than the one you made the mksysb from. Any additional drivers needed
for the "new" machine are loaded from the CD ROM you booted from.

Home this helps.

Vinit Adya

michael.shulman wrote:
> How would I go about moving a mksysb image from one AIX machine to the
> other for the purposes of using the second machines tape drive to write
> the image?
>
> Background: I have two AIX machines: a P570 and a 520. The 570 has no
> built in tape drive and I have a removeable 4/8GB DDS2 SCSI drive I use
> in emergencies. I am trying to make an image of an LPAR with a very
> large rootvg on the 570 and it is not practical to use close to 10 8G
> tapes. The 520 has a DDS4 70G tape drive in it which is also what the
> system I am cloning the LPAR from the 570 to be built in.
> The 520 is running AIX 5.3, while the 570 LPAR is running 5.2. (I don't
> know if this will make a difference).
>
> Any help would be appreciated in this.

#3 (**permalink**) 01-05-2008, 10:08 AM

Hi,

Why not try to do the p570 mksysb on a filesystem and then transfer it
down to the p520 tape drive ?

For instance:
1- make sure you have a large enough FS to hold the p570 mksysb on the
p520,
2- NFS-export it RW for the p570
3- NFS-mount it on the p570
4- do your p570 mksysb on that NFS share (might eat some network
bandwith)
5- on the p520 side, dump (dd) the mksysb file to the tape

Hubert.

#4 (**permalink**) 01-05-2008, 10:08 AM

michael.shulman wrote:
> How would I go about moving a mksysb image from one AIX machine to the
> other for the purposes of using the second machines tape drive to write
> the image?
>
> Background: I have two AIX machines: a P570 and a 520. The 570 has no
> built in tape drive and I have a removeable 4/8GB DDS2 SCSI drive I use
> in emergencies. I am trying to make an image of an LPAR with a very
> large rootvg on the 570 and it is not practical to use close to 10 8G
> tapes. The 520 has a DDS4 70G tape drive in it which is also what the
> system I am cloning the LPAR from the 570 to be built in.
> The 520 is running AIX 5.3, while the 570 LPAR is running 5.2. (I don't
> know if this will make a difference).

You have:
4/8 GB DDS2 Tape
p570 , AIX 5.2/LPAR , no tape
p520 , AIX 5.3 , DDS4 70 GB tape

Task:
backup a very large rootvg on the p570

Tips:
1) SIMPLE
Create a /etc/exclude.rootvg file to make a mksysb which fits on one
DDS2 tape.
Save the other data with rdump to the DDS 4 Tape

Recovery:
Basesytem - DDS2 tape drive and mksysb tape
For the other data a DDS4 tape is needed

2) NIM
Use the p520 as an nim master.
Backup with mksysb the p570/lpar to a NFS share on the p520
Backup this file to the DDS4 tape

Recovery:
A nim server with => AIX 5.2 is required or take a look at NIMOL ( NIM
on Linux )
and a DDS4 Tape in case the mksysb has been removed from the nim server

3) NEVER TESTED
a ) Create a simple basic mksysb on the p570 to the DDS2 drive
b) Copy the first 3 sessions on the DDS2 tape to the DDS4
This way we have a bootable DDS4 Tape with AIX 5.2

c) copy a full mksysb from the p570 to the 4 session on the DDS4 drive.
( The session numbering might be wrong - all from memory )

Recovery:
You need a DDS4 Drive to install AIX 5.2

hth
Hajo

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