Hello, I find that QEMU supports to set boot(QMP command "boot_set") order online, namely the virtual machine can be reboot in appointed order, but libvirt had no corresponding interface. So, I want to know if libvirt intend to support to set boot order online. If the answer is yes, I'll try to apply the patch. If no, why?

-----Original Message----- From: Jiri Denemark [mailto:jdenemar@redhat.com] Sent: Monday, March 03, 2014 9:31 PM To: Daniel P. Berrange Cc: Wangyufei (James); libvir-list(a)redhat.com; Moyuxiang; Zhaoyanbin (A) Subject: Re: [libvirt] [Question] Will we support to set boot order online? On Mon, Mar 03, 2014 at 09:58:40 +0000, Daniel Berrange wrote: > On Mon, Mar 03, 2014 at 08:22:13AM +0000, Wangyufei (James) wrote: > > Hello, > > I find that QEMU supports to set boot(QMP command "boot_set") order > > online, namely the virtual machine can be reboot in appointed order, > > but libvirt had no corresponding interface. So, I want to know if libvirt > > intend to support to set boot order online. If the answer is yes, I'll > > try to apply the patch. If no, why? > > AFAIK, no one has looked at this. > > NB, this will only work for guests actually using the old style boot > order. Any guests using per-device boot indexes for ordering won't > work with this command. Hmm, looks like it's quite useless because libvirt uses per-device boot indexes whenever it is possible even if the domain XML used the old way of specifying boot order. Thus, it's very likely any domain running in a QEMU which is not ancient will be using per-device boot order. Jirka