Dumb question: Is live guest relocation of a z/Linux guest effectively a reboot of that guest, or does it transfer all the baggage that has accumulated over the life of the guest?
On 28 May 2015 at 23:48, Mike Walter <mike.wal...@aon.com> wrote: > Enter the Wayback Machine for trip to 1996 by visiting: > > > http://listserv.uark.edu/cgi-bin/wa?A2=ind9610&L=IBMVM&P=R1016&1=IBMVM&9=A&I=-3&J=on&X=D2B166CA66E8CA0104&Y=Mike.Walter%40aon.com&d=No+Match%3BMatch%3BMatches&z=4 > > (watch out for URL line breaks of that link). > > That post was written before Linux ran on any IBM mainframes, and it > addresses some CMS application issues, but some parts (e.g. 'other > systems', and accumulated changes affecting the next IPL) still apply. > While you're there, search for other posts on that thread... interesting > and enlightening reading. > > While z/VM can shutdown and restart at astonishingly speed (well under 10 > minutes), large Linux servers can take much longer -- making the business > case for more frequent IPLs a more difficult decision. But one must > balance weekly IPLs against the potential for the extended recovery time > which may (place your bets) be required to recover from those changes which > have accumulated since the last IPL, and may detrimentally affect the next > IPL. Provide your management with as many facts as you can find, and your > advice, then let them make a decision -- that's why they get paid the big > bucks, right? > > Mike Walter > Aon Service Corporation > The opinions expressed herein are mine alone, not necessarily those of my > employer. > > ------------------------------ > In response to: > > ------------------------------ > > > > Date: Wed, 27 May 2015 14:33:41 +0000 > > From: "Will, Chris" <cw...@bcbsm.com<mailto:cw...@bcbsm.com>> > > Subject: Are weekly z/VM IPLs necessary? > > > > We have gotten in the habit of IPLing our z/VM and zLinux guests every = > > Sunday during our standalone window. With the window shrinking and the = > > need for 24/7 availability is it really necessary to IPL every week? If = > > not what potential problems could we run into by not doing the IPL (memory > = > > leaks, logs filling etc.). This is in comparison to the Intel side of the > = > > shop (Red Hat, Windows) where they go months between IPLs. The only = > > benefit I see is the opportunity to recycle WMB execution groups. > > > > Chris Will > > > > > > > > The information contained in this communication is highly confidential and > = > > is intended solely for the use of the individual(s) to whom this = > > communication is directed. If you are not the intended recipient, you are = > > hereby notified that any viewing, copying, disclosure or distribution of = > > this information is prohibited. Please notify the sender, by electronic = > > mail or telephone, of any unintended receipt and delete the original = > > message without making any copies. > > =20 > > Blue Cross Blue Shield of Michigan and Blue Care Network of Michigan are = > > nonprofit corporations and independent licensees of the Blue Cross and = > > Blue Shield Association. > > > > > > > > ---------------------------------------------------------------------- > For LINUX-390 subscribe / signoff / archive access instructions, > send email to lists...@vm.marist.edu 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/ > ---------------------------------------------------------------------- For LINUX-390 subscribe / signoff / archive access instructions, send email to lists...@vm.marist.edu 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/
