Re: [libvirt] [Qemu-devel] [PATCH RFC 0/4] Allow hibernation on guests

[adding qemu-devel] On 01/26/2012 07:46 AM, Daniel P. Berrange wrote: >> One thing, that you'll probably notice is this >> 'set-support-level' command. Basically, it tells GA what qemu version >> is it running on. Ideally, this should be done as soon as >> GA starts up. However, that cannot be determined from outside >> world as GA doesn't emit any events yet. >> Ideally^2 this command should be left out as it should be qemu >> who tells its own agent this kind of information. >> Anyway, I was going to call this command in qemuProcess{Startup, >> Reconnect,Attach}, but it won't work. We need to un-pause guest CPUs >> so guest can boot and start GA, but that implies returning from qemuProcess*. >> >> So I am setting this just before 'guest-suspend' command, as >> there is one more thing about GA. It is unable to remember anything >> upon its restart (GA process). Which has BTW show flaw >> in our current code with FS freeze& thaw. If we freeze guest >> FS, and somebody restart GA, the simple FS Thaw will not succeed as >> GA thinks FS are not frozen. But that's a different cup of tea.