On Wednesday, 03/16/2005 at 04:37 CST, Phil Howard <[EMAIL PROTECTED]> wrote: > On Wed, Mar 16, 2005 at 02:56:21PM -0500, Post, Mark K wrote: > > | Since I don't have access to an LPAR and HMC, I cannot document anything > | that I _know_ works specifically for Slack/390. Essentially, you just need > | to create your CD with the three "starter files" in some directory name of > | your choosing. Then, you'll need to create a ".ins" file to point to them. > > What is an HMC? > > I haven't worked with IBM mainframe hardware for about 12 years. > > > | path/to/dir/tapeinstall.image-2.4.26.gcc-3.3.4.img 0x00000000 > | path/to/dir/initrd.gz 0x00800000 > | path/to/dir/parmfile.txt 0x00010480 > | > | The hex values after the file names are storage locations, and represent > | what I've seen in .ins files for Red Hat and SUSE. I have no idea how those > | values are derived, or if anything might cause them to be changed. > > If these files are being used to emulate a tape drive, I'm curious how > these hex values get passed through. I would think that each read ccw > on the tape drive would read some content from the file, until EOF, then > skip to the next file. If I were to put these files on a real tape, > the hex values wouldn't even be there.
Confusion abounds. The Hardware Management Console (HMC) has a CD/DVD drive in it that can read specially-formatted discs as Mark describes. It does not emulate a tape drive but is a function built directly into the machine. That is, the HMC drive does not appear as a device within the I/O subsystem. Booting a partition from this drive causes a binary image to be loaded from the drive into memory WITHOUT the use of traditional IPL processing. You cannot boot the HMC DVD drive into a second-level guest because there is no way to "give" (from the h/w perspective) the HMC DVD to a partition and, hence, no way to use it with a guest. 3422 tape emulation using Optical Media Attach (OMA) format is done on Multiprise 3000, FLEX-ES, and the IBM 2074-2. IBM-provided CDs (not DVDs!!) will contain a /tapes directory and a TDF. Things on here are IPLable using traditional IPL processing. Because it is a real device, you can attach it to a second-level guest and IPL the guest from it. You have to decide which kind of device you're going to be using: An emulated tape or the HMC DVD drive. How you use them and how you build them are waaaay different. Alan Altmark z/VM Development IBM Endicott ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to [EMAIL PROTECTED] with the message: INFO LINUX-390 or visit http://www.marist.edu/htbin/wlvindex?LINUX-390
