Let's suppose I was stupid enough in the beginning to just ATTACH a pack to the VM
guest, install Linux and dasdfmt the entire pack. Then, I didn't use the -label on
dasdfmt and ended up with a funky VOLSER like:
q 127
DASD 0127 ATTACHED TO DARWIN 0200 R/W LNX1 x
Ready; T=0.01/0.01 14:18:41
Can I still use ICKDSF: CPFORMAT LABEL UNIT(127) NVFY VOLID(LNX200) to recify it
without harming the contents of the IPL volume?
Dave
-----Original Message-----
From: Linux on 390 Port [mailto:[EMAIL PROTECTED] Behalf Of
Alan Altmark
Sent: Wednesday, March 17, 2004 1:30 PM
To: [EMAIL PROTECTED]
Subject: Re: Let Linux use Cyl 0?
On Wednesday, 03/17/2004 at 11:50 EST, "Davis, Larry"
<[EMAIL PROTECTED]> wrote:
> Should I be letting Linux instances, under z/VM, utilize Cylinder 0?
I would recommend never allowing any guest to write on cyl 0. If the
guest writes a label that matches the label of any of your CP_OWNED packs,
you could be in for a big surprise the next time you IPL. The one
exception is if the persons doing the labelling are following the same
procedures you do for choosing volume labels.
...
Alan Altmark
Sr. Software Engineer
IBM z/VM Development
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