> -----Original Message-----
> From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On 
> Behalf Of Kittendorf, Craig
> Sent: Wednesday, March 08, 2006 4:04 PM
> To: LINUX-390@VM.MARIST.EDU
> Subject: New DASD
> 
> 
> We're about to move our DASD to new Shark.  Linux/390 is currently on
> addresses 0FAA and 0FAB.  The new device addresses on the 
> Shark will be
> 7949 and 794A.
> 
> Will Linus/390 automagically recognize these new devices?  Or am I in
> deep trouble?
> 
> Thanks,
>      Craig
> 

LPAR or z/VM mode? Under z/VM, just keep using the old virtual DASD
addresses on the new real addresses by updating the z/VM directory for
the z/Linux guest and go. If you're in an LPAR, then you're in deep
kimchee.

Of course, if the person doing the I/O gen is "nice" and you're in an
LPAR, he can use HCD to "map" the old device numbers to the new DASD for
that one LPAR. But I'll bet he or she isn't that "nice". Oh, and you'd
need to somehow copy the entire volume to the new addresses. I think
that DFDSS, or FDR can do this. Again, if you're under z/VM, then no
changes are need other than to the directory for the z/Linux guest.

--
John McKown
Senior Systems Programmer
UICI Insurance Center
Information Technology

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