And if there are pages of an SDF (the VTAM segment and CMS NSS are good examples) on the disk, expect more than a crash of a single user when you flip the switch.:-)
Regards, Richard Schuh > -----Original Message----- > From: The IBM z/VM Operating System > [mailto:[EMAIL PROTECTED] On Behalf Of Rich Greenberg > Sent: Thursday, May 08, 2008 5:41 AM > To: IBMVM@LISTSERV.UARK.EDU > Subject: Re: Owner of a page > > On: Wed, May 07, 2008 at 09:44:45PM -0400,Marty Zimelis Wrote: > > } My recollection is that there's only an allocation bit map on a > } page-extent basis. The only way I can think of to track > down the page is to } figure out what the CCPV value* is for > the page, then traverse all the } PGMBKs for the suspect > users, looking for a matching DASD slot "address" in } an > ASATE. It's distinctly brute force and requires a lot of > control block } chasing, but another approach does not > immediately come to mind. > } > } * CCPV= 2 bytes of cylinder number within the page extent, > one byte of page } number within the cylinder, and one byte > of index into the CPOWN list } (V=volume). > > Marty, Martha et al. > You don't need to match the whole CCPV. Just determine the V and find > item(s) that match it. ISTR that V is the position in the CP > owned list, but I don't know if 0 or 1 is the first entry. > > You could always turn off that drive and see which SVM > crashes on a paging error. Not recommended because it might crash CP. > > -- > Rich Greenberg N Ft Myers, FL, USA richgr atsign panix.com > + 1 239 543 1353 > Eastern time. N6LRT I speak for myself & my dogs only. > VM'er since CP-67 > Canines:Val, Red, Shasta & Casey (RIP), Red & Zero, Siberians > Owner:Chinook-L > Retired at the beach Asst > Owner:Sibernet-L >
