When create internal system checkpoint snapshot, it will not works if guest has passthrough devices attached. It will report error: error: operation failed: Error -22 while writing VM With this patch, it will report erro: error: Requested operation is not valid: domain has assigned non-USB host devices Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=874418#c19 --- src/qemu/qemu_driver.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 5dc62b0..0fdee26 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -12902,6 +12902,9 @@ qemuDomainSnapshotCreateActiveInternal(virConnectPtr conn, } } + if (!qemuMigrationIsAllowed(driver, vm, vm->def, false, false)) + goto cleanup; + if (qemuDomainObjEnterMonitorAsync(driver, vm, QEMU_ASYNC_JOB_SNAPSHOT) < 0) { resume = false; -- 1.8.3.1