[CentOS] replace x86 with x64 system and reuse existing LVM
nux at li.nux.ro
nux at li.nux.roMon Jan 10 02:17:38 UTC 2011
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Kai Schaetzl writes: > I want to replace an existing 32bit with a 64bit installation (Centos 5). > There's an existing LVM with lots of partitions. Most are used for Xen > guests. The system itself uses only one of them plus a separate /boot > partition that is not on LVM. > What's the best course of action here? Should I do the reinstall with > kickstart or better manually and reuse the existing filesystem? As I > understand once LVM gets loaded it should find the volumes by itself, but > will it be able to use the same naming scheme for instance? Or do I have > to do some additional stuff, anyway? > > Thanks, > > Kai Kai, Make sure you backup your config files and whatever else is important for you (especially /etc/xen and/or /etc/libvirt if the machine is mainly dom0) and reinstall from scratch. Install from CD/DVD and be _very_ careful with the partitions. If you get it right, all volumes should be preserved. I did this a couple of times without problems (and will do it again once Centos 6 is released :> ). -- Nux! www.nux.ro
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