Hi list, I have been using xen for a while with success on the following environment: Hardware: Dell PowerEdge 2950 / 2GB Ram / Intel(R) Xeon(R) CPU / 800 GB RAID 5 System: Debian etch Xen packages: # dpkg -l | grep xen libc6-xen linux-image-2.6.18-6-xen-686 linux-modules-2.6.18-6-xen-686 xen-hypervisor-3.0.3-1-i386-pae xen-ioemu-3.0.3-1 xen-linux-system-2.6.18-6-xen-686 xen-tools xen-utils-3.0.3-1 xen-utils-common On this machine I have 4 VMs with about 250RAM each. Dom0 is configured to use only one CPU. Everything was working great until I try to specify 2 CPUs for one specific domU. The parameter I used is "vcpus = 2". The system starts with no problems, including that domU, but the hole machine reboots with absolute no messages from time to time. Today I removed the "vcpus = 2" from that specific dom0 and everything came back to normal. Somebody has any tip about that? Thanks a lot. Fábio Catunda. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
El Miércoles 28 Enero 2009, Fábio Catunda escribió:> Hi list,Hi,> On this machine I have 4 VMs with about 250RAM each. Dom0 is configured > to use only one CPU. > > Everything was working great until I try to specify 2 CPUs for one > specific domU. The parameter I used is "vcpus = 2". The system starts > with no problems, including that domU, but the hole machine reboots with > absolute no messages from time to time. Today I removed the "vcpus = 2" > from that specific dom0 and everything came back to normal. > > Somebody has any tip about that?You can try adding "noreboot" to /boot/grub/menu.lst, it''s a xen option, so you should put it after any other options in the kernel line corresponding to xen. Then reboot and start your domU with "vcpus = 2", if it crashes dom0 won''t reboot and you''ll be able to connect a monitor and (probably) see the cause of the crash.> Thanks a lot. > > Fábio Catunda.Hope it helps, -- Ricardo J. Barberis Senior SysAdmin - I+D Dattatec.com :: Soluciones de Web Hosting Su Hosting hecho Simple..! _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users
> You can try adding "noreboot" to /boot/grub/menu.lst, ...> Fabio, you might want to check into using netconsole. With netconsole > you can capture kernel messages over the network. ...Thanks everybody, I will try both solutions and if I find out something I''ll post here. With best regards, Fábio Catunda. _______________________________________________ Xen-users mailing list Xen-users@lists.xensource.com http://lists.xensource.com/xen-users