If I open two session in a migration operation, how does the qemu know which one should be accepted? I saw there was a ram_list to check, but no id of the guest.
2014-07-02 17:59 GMT-04:00 Eric Blake <ebl...@redhat.com>: > On 07/02/2014 01:20 PM, Gary Jordan wrote: > > Does Qemu have a VM id allocated for each VM? I did not find this Id in > > qemu. HOW deos qemu identify each VM, using thread Id or some other > > identifiers? > > Each qemu process manages exactly one VM, so qemu doesn't care what id a > guest has. Higher-level management software, such as libvirt, has > notions of a VM name and UUID (both of which can be specified on the > command line parameters given to qemu, and the UUID can even be > propagated to the guest, such as by SMBIOS readable by dmidecode in the > guest), as well as a VM id (in libvirt's case, a sequentially increasing > number for each VM that libvirt spawns a qemu process for). But that's > getting outside the realm of qemu, since qemu doesn't care what name or > uuid you picked, only whether you have access to the monitor of the qemu > process. > > -- > Eric Blake eblake redhat com +1-919-301-3266 > Libvirt virtualization library http://libvirt.org > >
