Check with your 'VM Guy' to ask if you have Vdisk or Tdisk available. John McKown's response showed the directory entries needed for both, pick one to give to the VM Guy based on his response. That way all Linux needs to do after the change is made is log off and log on, and it shouldn't know the difference...as long as no reference is made to /dev/dasda (other than the dasd parameter).
James Melin wrote:
I agree the less pain route is preferable but I'm not the 'VM guy' here. I'm the penguin herder. What specifically do I want to ask the VM guy to do for me? Is this something you put into the profile exec for start up? If you could specifically say what needs doing for this to work, then all I need to do is remove the fstab entry for it rather than mess with the universe.
Rich Smrcina <[EMAIL PROTECTED] om> To Sent by: Linux on [email protected] 390 Port cc <[EMAIL PROTECTED] IST.EDU> Subject Re: Removing a volume from your system.... 03/25/2005 09:52 AM
Please respond to Linux on 390 Port <[EMAIL PROTECTED] IST.EDU>
Very muchly agreed, changing the order of the disks especially for the root file system is more of a pain than it's worth.
McKown, John wrote:
Well, this is just me. I would not remove 0200 at all. Instead, I would define it as a V-DISK or a T-DISK and make it small. I mean, you're not going to use it, so just have a "place holder" for address 0200
MDISK 0200 V-DISK 1
or
MDISK 0200 T-DISK 1
-- John McKown Senior Systems Programmer UICI Insurance Center Information Technology
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-----Original Message----- From: Linux on 390 Port [mailto:[EMAIL PROTECTED] On Behalf Of James Melin Sent: Friday, March 25, 2005 9:23 AM To: [email protected] Subject: Removing a volume from your system....
Hey gang... just a little fuzzy on the correct way to accomplish this:
I have a system with a teeny swap volume and a larger swap volume. The VM guys wants me to give him the mod-3 devices I am using. Since I can have him give me mini-disks for swap elsewhere I'm find with that, but the larger swap volume is sufficient at the moment.
What I have in zipl.conf:
# Generated by YaST2 [defaultboot] default=ipl
[ipl] target=/boot/zipl image=/boot/kernel/image ramdisk=/boot/initrd parameters="dasd=200-205,210 root=/dev/dasdb1" [dumpdasd] target=/boot/zipl dumpto=/dev/dasd??
[dumptape] target=/boot/zipl dumpto=/dev/rtibm0
I want to remove device 200 from the system... Easy enough, take it out of the parameters= line as follows:
parameters="dasd=201-205,210 root=/dev/dasdb1" Now of course after IPL what was /dev/dasda1 (device 200) is gone, so /dev/dasdb1 has become /dev/dasda1 as of the next IPL.
That said, for the purposes of running the zipl prior to shutting down the system and losing the device, do I change the root=/dev/dasdb1 parameter to root=/dev/dasda1? I'm confused as to whether that points to where the system should find its root volume at IPL time or if it points to where zipl should write the bootstrap when zipl is run....
I know to modify fstab before I IPL - no worries there. I've just never removed dasd 'higher up the food chain' than where I have my IPL device before and I want to make sure I don't screw myself.
Thanks!
-J
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