On Mon, Jul 18, 2011 at 2:32 PM, Joshua Penix <[email protected]> wrote: > On Jul 18, 2011, at 11:16 AM, Derek J. Balling wrote: > >> Has anyone here done an ESX->XenServer migration before? Tips? Tricks? >> Gotchas? Tools that you used that you said "Holy crap that made everything >> easy!"?
I have some old VMware images that I need to move over. Citrix has tools for converting a VMware image to a Xen image; I've only used it on vendor's images, and it worked once and failed once. I plan on simply rebuilding those service on new images. > The biggest gotcha is that XenServer wants Linux guests to be > paravirtualized, which means that you have to prepare a compatible kernel > prior to the migration. Depending on your Linux distributions, this may > already be in place or may just be a quick package install away. We use Ubuntu and build our own templates. With every version of Ubuntu and/or Xen we need to tweak the template creation process a bit, but it isn't that fiddly. (Xen 5.6 fp1 makes a few grub related fixes unnecessary, for example.) All the Ubuntu images are paravirtualized but I've run them in HVM mode too (and have needed to convert a PVM to HVM and back when an update goes wrong and I need to boot the VM off a recovery disk or whatever). We have a few FreeBSD VMs too but haven't tried to paravirtualize them. They use up slightly more resources than a PVM Linux image does, but not too much so and we have had no problems with stability. Of course we can't use live-migration on non-PVM images. -- Perfection is just a word I use occasionally with mustard. --Atom Powers-- _______________________________________________ Tech mailing list [email protected] https://lists.lopsa.org/cgi-bin/mailman/listinfo/tech This list provided by the League of Professional System Administrators http://lopsa.org/
