Re: How to detect completion of a paused VM migration on the destination?

On 1/21/20 3:28 PM, Milan Zamazal wrote: > Hi, > > when a normally running VM is migrated, libvirt sends > VIR_DOMAIN_EVENT_RESUMED_MIGRATED event on the destination once the > migration completes. I can see that when a paused VM is migrated, > libvirt sends VIR_DOMAIN_EVENT_SUSPENDED_PAUSED instead. > > Since there seems to be nothing migration specific about > VIR_DOMAIN_EVENT_SUSPENDED_PAUSED event, my question is: Is it safe to > assume on the destination that this event signals completion of the > incoming migration (unless VIR_DOMAIN_EVENT_RESUMED_MIGRATED is received > before)? Yes. This is the code that handles the finish phase of migration: https://libvirt.org/git/?p=libvirt.git;a=blob;f=src/qemu/qemu_migration.c... which can be read as the following pseudo code: if (postCopy) sendEvent(VIR_DOMAIN_EVENT_RESUMED_MIGRATED); if (domain.paused) sendEvent(VIR_DOMAIN_EVENT_SUSPENDED_PAUSED);