Hi, There is a little difference between the output of domxml-to-native and the actual commandline. No matter qemu is in control or readline mode, domxml-to-native always converts it to readline mode. That is because the parameter "monitor_json" for qemuBuildCommandLine() is always set to false in qemuDomainXMLToNative(). Here is the patch, please comment! Signed-off-by: tangchen <tangchen@cn.fujitsu.com> --- src/qemu/qemu_driver.c | 7 ++++++- 1 files changed, 6 insertions(+), 1 deletions(-) diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 2e6f3e4..a564afb 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -4480,6 +4480,7 @@ static char *qemuDomainXMLToNative(virConnectPtr conn, virDomainDefPtr def = NULL; virDomainChrSourceDef monConfig; virBitmapPtr qemuCaps = NULL; + bool monitor_json = false; virCommandPtr cmd = NULL; char *ret = NULL; int i; @@ -4577,11 +4578,15 @@ static char *qemuDomainXMLToNative(virConnectPtr conn, &qemuCaps) < 0) goto cleanup; +#ifdef HAVE_YAJL + monitor_json = qemuCapsGet(qemuCaps, QEMU_CAPS_MONITOR_JSON); +#endif + if (qemuProcessPrepareMonitorChr(driver, &monConfig, def->name) < 0) goto cleanup; if (!(cmd = qemuBuildCommandLine(conn, driver, def, - &monConfig, false, qemuCaps, + &monConfig, monitor_json, qemuCaps, NULL, -1, NULL, VIR_VM_OP_NO_OP))) goto cleanup; -- 1.7.3.1 -- Best Regards, Tang chen