Well, if you are on the same processor:

1.  Create a userid in User Direct that mimics the hardware the LPAR was
using.
2.  Attach/dedicate the hardware to that user.
3.  Logon the user and IPL

No need to backup/restore.  You can go back to LPAR just as easy.

However, once you are under VM, you may want to consider changes to make
use of VM facilities and make life easier for you.  Such as:

1.  You may want to come though the VM TCP/IP stack instead of your own
dedicated hardware.
2.  You may want to change the packs from dedicated or full pack
minidisks to partical pack minidisks.  Odds are, there has been much
wasted disk space that can be reclaimed and you can replicate Linux
systems much quicker if you don't have to worry about unique real pack
names.
3.  Linux caching isn't a good player in a shared storage system (VM).
When you dedicate storage to Linux via LPAR, this isn't  a concern.  But
under a shared storage system, you can change things around, small
virtual size, large paging vdisk, you can get more Linux images in the
same amount of real memory.
4.  You may want to have some mindisks read/only and have these disks
shared across multiple Linux images.
5.  You may want to move some files to under VM's SFS.

So, it should run as is, but you will want to make changes to make it a
better citizen in the VM world.

Tom Duerbusch
THD Consulting

Dave Myers wrote:

> Have a question for the VM gurus out there...
>
> If I take a backup (using OFFLINDR util) of a
> S/390 Linux system (that was installed in an LPAR)
> and restore it to a VM Guest image (emulated 3390)
> will I have to make any changes to this system,
> or will it run as is under VM ?
>
> NOTE:  This assumes that I will NOT be changing device types
>             and any configured items like hostname, ip addr etc.
>
> Tia
> Dave

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