Ryan Harper wrote: > * Jan Kiszka <jan.kis...@siemens.com> [2009-12-02 12:07]: >> Ryan Harper wrote: >>> * Jan Kiszka <jan.kis...@siemens.com> [2009-12-02 09:28]: >>>> Hi, >>>> >>>> I'm facing stalled x86-64 guests after live migration when using kvm >>>> (share disk images). This does not happen with x86-32 guests or when >>>> disabling kvm. Both qemu and qemu-kvm git heads are affected (recent >>>> vmstate fixes applied). Running I/O load during the migration (e.g. a >>>> simple "ls -R /") seems to trigger it reliably. >>>> >>>> Can anyone confirm / comment on this? Do we fail to restore some magic >>>> state that only long mode cares about? >>> Just tested upstream qemu.git (with vmstate fixes) and I could migrate >>> RHEL 5.3 64-bit guest with your light io load over localhost. I'll try >>> remote hosts next. >> Hell, too many variables. It looks like the kernel modules have some if >> not the ultimate impact: kvm-mod-2.6.31.6b on my 2.6.27 host works fine, >> kvm-kmod stable-2.6.32 as well as master cause troubles. >> >> What is your host kernel and/or kvm module version? > > Stock 64-bit Ubuntu Karmic: > % uname -a > Linux symmetry 2.6.31-15-generic #50-Ubuntu SMP Tue Nov 10 14:53:52 UTC 2009 > x86_64 GNU/Linux > > % modinfo kvm > filename: > /lib/modules/2.6.31-15-generic/kernel/arch/x86/kvm/kvm.ko > license: GPL > author: Qumranet > srcversion: 82D6B673524596F9CF3E84C > depends: > vermagic: 2.6.31-15-generic SMP mod_unload modversions > parm: oos_shadow:bool > > % modinfo kvm-intel > filename: /lib/modules/2.6.31-15-generic/kernel/arch/x86/kvm/kvm-intel.ko > license: GPL > author: Qumranet > srcversion: 8FEA479DFCD7F174DA7864E > depends: kvm > vermagic: 2.6.31-15-generic SMP mod_unload modversions > parm: bypass_guest_pf:bool > parm: vpid:bool > parm: flexpriority:bool > parm: ept:bool > parm: emulate_invalid_guest_state:bool >
So far, so consistent. Could you try kvm-kmod-2.6.32-rc7 on top of that? Jan -- Siemens AG, Corporate Technology, CT T DE IT 1 Corporate Competence Center Embedded Linux
