The regular VM startup code first calls the setup of the disk backing chain as defined in the XML and then calls the function to load the rest of the backing chain from the image metadata. The hotplug code did it the other way around, thus causing a failure when attempting to attach a QCOW2 image via FD passing. Reorder the hotplug code to have the same order. Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=2193315 Signed-off-by: Peter Krempa <pkrempa(a)redhat.com&gt; --- src/qemu/qemu_hotplug.c | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c index 8c14540275..54b5a2c2c9 100644 --- a/src/qemu/qemu_hotplug.c +++ b/src/qemu/qemu_hotplug.c @@ -921,9 +921,6 @@ qemuDomainAttachDeviceDiskLiveInternal(virQEMUDriver *driver, if (virDomainDiskTranslateSourcePool(disk) < 0) goto cleanup; - if (qemuDomainDetermineDiskChain(driver, vm, disk, NULL) < 0) - goto cleanup; - for (i = 0; i < vm->def->ndisks; i++) { if (virDomainDiskDefCheckDuplicateInfo(vm->def->disks[i], disk) < 0) goto cleanup; @@ -1007,6 +1004,9 @@ qemuDomainAttachDeviceDiskLiveInternal(virQEMUDriver *driver, if (qemuDomainPrepareDiskSource(disk, priv, cfg) < 0) goto cleanup; + if (qemuDomainDetermineDiskChain(driver, vm, disk, NULL) < 0) + goto cleanup; + if (qemuHotplugAttachManagedPR(vm, disk->src, VIR_ASYNC_JOB_NONE) < 0) goto cleanup; -- 2.40.0