[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-users] Ubuntu 8.04 DomU crash
Thiago Camargo Martins Cordeiro wrote: > The easy/fast way that I know to stabilize Ubuntu under Xen is: > echo "deb http://ftp.br.debian.org/debian lenny main" >> > /etc/apt/sources.list > aptitude update > aptitude install linux-image-2.6.26-2-xen-686 > And configure the Debian Linux kernel within your domU... > OpenSUSE kernel its great too, but it isn't a debianified package. I just wanted to follow up and document what I ended up doing, for anyone else who runs into it. I tried the suggestion above, but I became worried when it wanted to update libc and warned about a bunch of other packages it thought should be updated but wasn't going to update. having been burned by libc mismatches in the past, I decided not to perform the update from within the DomU, and instead pursue manually updating the kernel that Xen uses to launch the DomU (but which is stored within the Dom0). I manually downloaded the kernel and modules packages within the Dom0, and took them apart with ar and tar. I placed the kernel where it would be accessible to xm create in the Dom0, then copied the kernel AND the modules folder over to their proper locations within the DomU. I updated the initramfs with update-initramfs -c, and copied the resulting ramdisk filesystem back to the Dom0 (where xen launches it from). Then, I changed my DomU config file to point to the new kernel and initrd files, and stopped and restarted the DomU. It seems to be working well, and I haven't had a crash in a few days. As far as why I'm not using pygrub or pvgrub to launch the DomU, I had heard (perhaps erroneously) from other users that this was a security risk -- that storing the kernel where it is potentially writable from within the DomU was a bit of a violation of the virtualization principle, since it is code that the Dom0 sort of runs. I know some Xen VPS ISPs won't allow you to supply your own kernel for security reasons. This could be a whole different discussion if anyone wanted to reflect on it. Anyway, thanks to all for the assistance, and I hope this info helps others. I wish Ubuntu 8.04 had a Xen-stable kernel right out of the box, as it would save a lot of trouble. Actually, first-class Xen support from later Ubuntu releases would be even better. -- Chris 'Xenon' Hanson, omo sanza lettere Xenon AlphaPixel.com PixelSense Landsat processing now available! http://www.alphapixel.com/demos/ "There is no Truth. There is only Perception. To Perceive is to Exist." - Xen _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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