I can reproduce it too, enabling iothread hang qmp. (qemu process don't crash)
I have tested it with qemu 2.4 some weeks ago (before rc0, without any proxmox patches), and it was working fine. ----- Mail original ----- De: "Emmanuel Kasper" <e.kas...@proxmox.com> À: "pve-devel" <pve-devel@pve.proxmox.com> Envoyé: Mardi 28 Juillet 2015 15:26:07 Objet: [pve-devel] Regression with latest qemu and iothreads option ? Hi I am using kvm --version QEMU emulator version 2.3.92 I have noticed if you select the iothread option in the disk options of your KVM, KVM hangs in a very nasty way: the kvm processes starts, the qm manager reports the machine as running but actually it is not: it is not possible to attach a qm terminal or qm monitor, or vnc console, it seems the processes ignores the messages being sent over the qmp socket: qm config 100 | grep iothread virtio0: big1:vm-100-disk-1,cache=unsafe,backup=no,iothread=on,size=16G qm monitor 100 Entering Qemu Monitor for VM 100 - type 'help' for help qm> info blockdev ERROR: VM 100 qmp command 'human-monitor-command' failed - unable to connect to VM 100 qmp socket - timeout after 31 retries Emmanuel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel _______________________________________________ pve-devel mailing list pve-devel@pve.proxmox.com http://pve.proxmox.com/cgi-bin/mailman/listinfo/pve-devel