I actually scoured the z/VM 5.4 doc looking for a documented method of doing this, but did not find anything specific. I had assumed it would probably be the CPU directory record that we would use to do this, but that did not turn out to be the case.
PS: Yes, we've given each Linux server 5 virtual CPU's, which map to two real IFLs. Our thinking on this is that the Linux guest "should" dispatch more work simultaneously with 5 CPU's (and the two real IFLs can more than handle the load). Comments? Good idea/bad idea? -Mike -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Marcy Cortes Sent: Wednesday, August 19, 2009 11:34 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: z/VM mode LPARs Interesting; I did consider that... Is this how IBM says you should do it? (PS. Do you really run 5 virtual CPUs in all of your Linux guests?) Marcy "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation." -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Michael Coffin Sent: Wednesday, August 19, 2009 4:19 PM To: IBMVM@LISTSERV.UARK.EDU Subject: Re: [IBMVM] z/VM mode LPARs I used the COMMAND records in the directory entry to set up my machines to have 5 virtual CPUs all on IFLs: COMMAND SET VCONFIG MODE LINUX COMMAND DEFINE CPU 0 TYPE IFL COMMAND DEFINE CPU 1 TYPE IFL COMMAND DEFINE CPU 2 TYPE IFL COMMAND DEFINE CPU 3 TYPE IFL COMMAND DEFINE CPU 4 TYPE IFL MACHINE ESA 5 Works like a charm. :) -Mike -----Original Message----- From: The IBM z/VM Operating System [mailto:ib...@listserv.uark.edu] On Behalf Of Marcy Cortes Sent: Wednesday, August 19, 2009 7:09 PM To: IBMVM@LISTSERV.UARK.EDU Subject: z/VM mode LPARs In a z10 LPAR that is defined as the new ZVM MODE with both CP and IFLs in it, how do you define your virtual machines to run on the IFLs? I can't find any directory statement that seems to do this for you. And from this: http://linuxvm.org/present/SHARE111/S9122bb.pdf On page 17, it says: First step, make virtual machines on IFL LPAR have virtual IFLs But how? Marcy "This message may contain confidential and/or privileged information. If you are not the addressee or authorized to receive this for the addressee, you must not use, copy, disclose, or take any action based on this message or any information herein. If you have received this message in error, please advise the sender immediately by reply e-mail and delete this message. Thank you for your cooperation."
