Josh Kelley wrote: > Actually, I was able to get CentOS running under Xen (as host and > guest) without too much effort. Unfortunately, I didn't take very > good notes... No custom repository or newer gcc or other recompiling > is needed. A patched kernel is needed, but Xen automates that for > you; see Xen's docs for details. > > Xen's web site provides a binary download of Xen 2.0.7, which works > without any problems, although their precompiled kernel (based off of > a stock 2.6.x kernel) contains relatively few modules. You can also > recompile 2.0.7 from source to add kernel modules. Getting Xen 2.x to > work with CentOS's customized kernel, or getting Fedora's newer > version of Xen to work, could be quite a bit more effort. > > Since you haven't updated glibc, you'll want to mv /lib/tls > /lib/tls.disabled on both host and guest OSes to improve performance. > Installing the guest OS can be a bit trickier; you can do a CD-based > install (reboot the host off of the CD then install CentOS to an blank > partition that will be used as the guest), or you can use rpmstrap or > yum --installroot. See > http://mark.foster.cc/wiki/index.php/Centos-4_on_Xen for details on > the latter two options. > > Feel free to contact me if you have any more questions. Hope this helps. > > Josh Kelley I'm using Centos as my host and guest operating systems. The big thing that didn't work out of the box for me was firewalling so I compiled my own Xen kernel (only minor heavy lifting required) http://www.pendragon.org/mywiki/Xen If TLS is absolutely required glibc would have to be recompiled with the appropriate flag: -mno-tls-direct-seg-refs http://wiki.xensource.com/xenwiki/XenSpecificGlibc You can also install guests using something like: mount /dev/vg00/xen00 /mnt/tmp yum --installroot=/mnt/tmp -y groupinstall base umount /mnt/tmp You will likely want to create a local repository out of the install media first though instead of installing all the rpms off of the 'net each time. -Mike