I don't like to have / on LVM. It makes things very difficult if you have problems with the guest, like forgetting the root password, running mkinitrd without zipl, and so on. I usually create LV for home, var, opt and usr, and leave all the other (etc, bin, boot and so on) on "physical" disk. Those dirs don't grow a lot, so they can be left out of a LV. If your users don't use the home partition, it could be left as well.
If you have multiple disks on the guest, and all the guests are clones, solving a "forgotten root password" problem will be much more trouble than leaving /etc out of a LV. Once I was talking about this with a friend, and he said I was being overcautious. In the same minute, he runs mkinitrd && reboot. I looked at that and said: "now, have a good time solving this mess..." He took almost an hour to run the installer, get to the shell, activate all disks, mount the LVM, chroot into it and run zipl. All linuxes were clones, so they had the same lv and vg names... Now he doesn't uses LVM for / and I think he is happy... Mauro http://mauro.limeiratem.com - registered Linux User: 294521 Scripture is both history, and a love letter from God. 2014-07-06 23:01 GMT-03:00 Chuck Tribolet <trib...@us.ibm.com>: > Setting up LVM during install is there in SuSE and RedHat, but the > incantation varies between the two, and from release to release (RHEL7 is > very different from RHEL6). > > If you are going to clone it, and it tries to default to names that > include the computer name, change the names to NOT include the computer > name. > > The general flow of the incantations is: > > Create /boot as non-LVM. I make it 512M which leaves me some back-pocket > space to figure out what happened when the user's fill / to 100%. > Create PVs > Create VG from PVs. > Create LV for Swap > Create LV for / > Done > > > > Chuck Tribolet > trib...@us.ibm.com (IBM business) > trib...@garlic.com (Personal) > http://www.almaden.ibm.com/cs/people/triblet > > > > From: Cameron Seay <cws...@gmail.com> > To: LINUX-390@vm.marist.edu, > Date: 07/06/2014 04:40 PM > Subject: Re: Adding DASD to a partition > Sent by: Linux on 390 Port <LINUX-390@vm.marist.edu> > > > > Yeahhhhhh... I figured I could not get around LVM. On x86 LVM is done > during the install. I have not figured out a way to do it during install > with Linux on z. Well, I gotta do it sooner or later. Thanks, Rich. > > > On Sun, Jul 6, 2014 at 3:40 PM, Rich Smrcina <r...@velocitysoftware.com> > wrote: > > > The only way to do that is LVM (or something similar). > > > > > > On 07/06/2014 03:16 PM, Cameron Seay wrote: > > > >> Can I add a DASD volume to an existing partition? I am using MOD-9s, > and > >> for example I would like to add one or more to the /opt partition. Or > >> would it just be better to use LVM? > >> > >> Thanks > >> > >> ---------------------------------------------------------------------- > >> 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/ > >> > >> > >> > > > > -- > > > > Richard Smrcina > > Sr. Systems Engineer > > > > Velocity Software Inc. > > Main: (650) 964-8867 > > Main: (877) 964-8867 > > r...@velocitysoftware.com <mailto://r...@velocitysoftware.com> > > ------------------------------------------------------------ > > ---------------------------- > > Signature > > <http://www.velocitysoftware.com/> > > *Follow us:* > > facebook < > http://www.facebook.com/pages/Velocity-Software/356098274460840> > > LinkedIn > > <http://www.linkedin.com/company/1798379?trk=tyah> twitter > > <https://twitter.com/VelocitySoftw> Xing > > <https://www.xing.com/companies/velocitysoftwaregmbh> > > > > ---------------------------------------------------------------------- > > 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/ > > > > > > -- > Cameron Seay, Ph.D. > Department of Computer Systems Technology > School of Technology > NC A & T State University > Greensboro, NC > 336 334 7717 x2251 > > ---------------------------------------------------------------------- > 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/ > ---------------------------------------------------------------------- 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/
