On Friday, 02/26/2016 at 11:16 GMT, Kirk Bradley <[email protected]> wrote: > Don?t you wish guest A could map guest B?s real memory as a secondary address > space on command and then you can use A to dump as far and fast as you want w/o > perturbing anything at all in B - it?s already stopped etc.
A guest that runs DAT OFF (CMS and GCS) can do that. It's one of the things that ESA/XC architecture mode enables. Linux can't do it because it runs DAT ON. Look at the PERMIT function of the ADRSPACE macro. There are all sorts of ideas floating around on how make dumps go faster. Even z/OS asks these questions. The Linux kdump & friends is the way to go. For those z/VM 6.3 clients who haven't built their SA dump kernel, please do so. If you wait until you need it, it will be too late. Alan Altmark Senior Managing z/VM and Linux Consultant Lab Services System z Delivery Practice IBM Systems & Technology Group ibm.com/systems/services/labservices office: 607.429.3323 mobile; 607.321.7556 [email protected] 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 ---------------------------------------------------------------------- For more information on Linux on System z, visit http://wiki.linuxvm.org/
