Re: [libvirt] [PATCH] qemu: Check for ejected media during startup and migration

On 09/13/2011 10:14 AM, Michal Privoznik wrote: > If the daemon is restarted so we reconnect to monitor, cdrom media > can be ejected. In that case we don't want to show it in domain xml, > or require it on migration destination. > > To check for disk status use 'info block' monitor command. Yuck - this is still polling-based (we have to ask qemu every time we want to dumpxml). Whatever happened to the proposal of having interrupt-based cdrom events, where qemu sends an event any time the virtual tray changes state (whether by monitor command or guest-initiated), and libvirt monitors those events to update its internal state at that time, so that libvirt's internal state is always accurate?