Hi, thank's for this update. Here comes some feedback. It is a very good source for info in this matter, and explains a lot of stuff you need to know. I have read the previous ones and tried to implement it. It was however tricky, most due to that reality changes (like: oops, we need more space on /opt ) and it is a couple of lines of code to make work and maintain. The bind mount is a source of failure, or not ? What happens if it does not work for some reason ? I guess the original mountpoint takes effect, and that one can be at a read-only disk. When was that one updated last ? And we have duplicate storing here ? My prime concern here was /etc, I wanted that one on a separate minidisk to be safe. I saw last in the pdf you have one guy,Carlos Ordonez, always asking: isn't there a simpler way to do this ? I like that guy :) About creating clones, we have made another approach. Every server configures the network/ip itself at every boot, and at first boot there is a script cleaning out old logs and other stuff remaining from setting the clonebase up. So we don't prepare a clone, just clone any server and it will fix itself at first boot. (Well, normally we clone from one clonebase, that makes it safer and you need the clonebase shutdown, but we can always clone any server that is shutdown) To have this working in SLES10 : We set a number of FKeys in the VM profile to for example: IPNR=1.2.3.4 and MASK=255.255.255.0 and GATEWAY=1.2.3.0 and so on. Then we get these values via vmcp in /etc/init.d/boot.local, and sets the ipconfig values. And whatever you need or want to set here. This also makes it easy to move servers around in different network(security)zones, just change in the VMprofile and reboot.
Cordialement / Vriendelijke Groeten / Best Regards / Med Vänliga Hälsningar Tore Agblad Volvo Information Technology Infrastructure Mainframe Design & Development SE-405 08, Gothenburg Sweden E-mail: tore.agb...@volvo.com http://www.volvo.com/volvoit/global/en-gb/ ________________________________________ From: Linux on 390 Port [linux-...@vm.marist.edu] On Behalf Of Michael MacIsaac [mike...@us.ibm.com] Sent: Wednesday, July 01, 2009 17:58 To: LINUX-390@VM.MARIST.EDU Subject: Updated paper available - "Sharing and maintaining SLES 10 SP2 Linux under z/VM" Hello everyone, I am please to announce an updated paper "Sharing and maintaining SLES 10 SP2 Linux under z/VM", and an associated tar file with scripts and configuration files. The paper is available on the Web at: http://linuxvm.org/present/misc/ro-root-S10.pdf The tar file is available at: http://linuxvm.org/present/misc/ro-root-S10.tgz The other authors are Steve Womer, Rick Troth and Kyle Black. This is an update to the IBM Redpaper published in 2/08 with a similar title. The updates in this paper are as follow: -) Based on z/VM 5.4 (previously 5.3) -) Based on SLES 10 SP2 (previously SLES 10) -) Linux scripts and z/VM REXX EXECs added/updated -) Linux script to create read-only system now named mnt2rogld.sh -) Disk space of each Linux system increased -) /var/lib/rpm/ is bind-mounted read-only over read-write /var/ file system -) More detailed section on maintaining Linux There is a counterpart paper based on RHEL coming in hopefully about a month. Watch this space. Thanks to many people who made this possible - just to name a few: Brian France, Dom Depasquale, Carlos Ordonez, Brad Hinson, Mark Post, David Boyes, Ernie Horn, Steve Shultz and Hongjie Yang. We had hoped to also add a section on DCSSs and NSSs but ran out of time. Maybe it can still be added. Enjoy! Feedback is welcome. "Mike MacIsaac" <mike...@us.ibm.com> (845) 433-7061 ---------------------------------------------------------------------- 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 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
