Re: [libvirt] [PATCH 3/5] DO NOT APPLY: Simple reproducer

https://bugzilla.redhat.com/show_bug.cgi?id=1623389 Steps to reproduce: 1) cat shmem.xml <shmem name='my_shmem0'> <model type='ivshmem-plain'/> <size unit='M'>4</size> <alias name='ua-123'/> </shmem> 2) virsh attach-device vm1 shmem.xml 3) virsh detach-device-alias vm1 ua-123; virsh detach-device vm1 shmem.xml 4) observe that the device is still in the domain: virsh dumpxml vm1 <shmem name='my_shmem0'> <model type='ivshmem-plain'/> <size unit='M'>4</size> <alias name='ua-123'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x0a' function='0x0'/> </shmem> 5) But qemu has the device no more: virsh detach-device-alias vm1 ua-123 error: Failed to detach device with alias ua-123 error: internal error: unable to execute QEMU command 'device_del': Device 'ua-123' not found This reproducer is to make sure that DELETE_DEVICE event arrives while monitor is unlocked. It is very hard to time qemu and libvirt so that the event comes exactly at the time when detach-device from 3) is doing the monitor call. Simulate this by unlocking monitor, waiting a few seconds and locking the monitor again. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt;