We're also seeing this hang-on-reboot problem when running linux- image-2.6.32-53-server and linux-image-2.6.32-50-server kernels in a Xen guest... but in our case our Xen hypervisor is v4.0.
For what it's worth, I found this related discussion thread: http://discussions.citrix.com/topic/332737-ubuntu-1004-on-xenserver-602-hangs-on-reboot-100-cpu/ -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1199987 Title: 2.6.32-49 kernel hangs during reboot under XenServer 6.0 PV guest Status in “linux” package in Ubuntu: Confirmed Bug description: Kernel 2.6.32-49 hangs at reboot (though not halt) when run under a Xen PV guest. Our hypervisor is XenServer 6.0 with all the latest patches. If we revert to 2.6.32-48, the problem goes away and reboots are successful. This suggests a regression introduced in -49, possibly this patch (though I am not certain): * kernel/sys.c: call disable_nonboot_cpus() in kernel_restart() - LP: #1193044 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1199987/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
