Jim,

I don't think those two statements are either necessarily correct, or
incorrect.  I would say that the "trick" is that the first cylinder to be
dumped to tape (and restored to disk at real cylinder 0) needs to be what
the Linux/390 system thinks is cylinder 0.  That's where the IPL record
information is going to be.  So, depending on how the minidisk is set up (if
using z/VM), and how you dump it, etc., etc., etc.


Mark Post

-----Original Message-----
From: James Melin [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 04, 2003 1:28 PM
To: [EMAIL PROTECTED]
Subject: CDL backup and copying the IPL record


If I understand things correctly, a DD dump of a linux volume will not copy
the IPL record, whereas a disk copy of the CDL image on the OS/390 side,
will? Is that a true statement?
Would this allow you to restore say a slightly pregnant mod-9 device (our
dasd person gave me an approximately correct size mod-9 and our disaster
recovery vendor uses real mod-9 geometry 1014 tracks too small) to a mod
27, and be able to read an IPL record off that device?

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