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We block resuming VMs in MIGRATION_SOURCE status. For good reasons, VMs are paused in the final stages of migrations and we don't want to mess with this and generally VMs states during migrations. But it also means that if a VM gets temporarily stopped due to an I/O error while waiting for migration, it cannot be resumed if the storage problem disappears while still waiting for the migration. If the VM is waiting on ongoingMigrations semaphore then it may keep it paused unnecessarily for long time. We can improve this situation by checking whether the VM in MIGRATION_SOURCE status is paused on I/O error and resuming it in such a case. libvirt prevents migrating such VMs and we can be sure that we don't interfere with a running migration when resuming such a VM. We make the check by asking libvirt directly, to be completely sure about the VM status. Change-Id: I432f51b1d7490d1cdc0d8ea484a96eb74d5da084 Bug-Url: https://bugzilla.redhat.com/2010478 Signed-off-by: Milan Zamazal <mzamazal@redhat.com>