tags 639867 + moreinfo unreproducible > > KVM/Qemu gets unstable when a blockdevice is removed when the vm is not > > running. > > - connect nbd device to nbd-server > > - start windows xp in vm > > - stop windows xp > > - disconnect nbd device > > - reconnect nbd-device > > - restart vm > > now you'll see hangups and for example vnc-sessions displaying the virtual > > display but totally ignoring e.g. keypresses > > I'm not sure this makes any sense at all. You reconnect a device > while some application is not running, you start that application > and it starts behaving badly. If that's really the case, the bug > is in the device not the application.
I did some more testing and found that the windows xp session also crashes occasionally when I do not fiddle with the nbd-server behind it. > Note that nbd in linux is single-threaded, ie, it can't handle > multiple concurrent requests, and linux nbd client can't submit > multiple requests too, so it may be quite slow - like "old good" > IDE without command queuing support. That is somewhat true: the current version also seems to send a couple of requests without waiting explicit for the reply. -- To UNSUBSCRIBE, email to [email protected] with a subject of "unsubscribe". Trouble? Contact [email protected]
