* Jan Kiszka <jan.kis...@siemens.com> [2009-12-02 12:18]: > 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? >
Sure, can you remind me of the kvm-kmod build magic for building that branch? > Jan > > -- > Siemens AG, Corporate Technology, CT T DE IT 1 > Corporate Competence Center Embedded Linux -- Ryan Harper Software Engineer; Linux Technology Center IBM Corp., Austin, Tx ry...@us.ibm.com
