[libvirt] [PATCH v3 3/3] qemu: hot-unplug of watchdog
Michal Privoznik
mprivozn at redhat.com
Wed Sep 27 12:12:45 UTC 2017
https://bugzilla.redhat.com/show_bug.cgi?id=1447169
Signed-off-by: Michal Privoznik <mprivozn at redhat.com>
---
src/qemu/qemu_driver.c | 4 +-
src/qemu/qemu_hotplug.c | 67 ++++++++++++++++++++++
src/qemu/qemu_hotplug.h | 3 +
tests/qemuhotplugtest.c | 7 ++-
.../qemuhotplug-watchdog-full.xml | 4 ++
5 files changed, 83 insertions(+), 2 deletions(-)
create mode 100644 tests/qemuhotplugtestdevices/qemuhotplug-watchdog-full.xml
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index db8ad0b04..4c8e9297a 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -7747,12 +7747,14 @@ qemuDomainDetachDeviceLive(virDomainObjPtr vm,
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainDetachShmemDevice(driver, vm, dev->data.shmem);
break;
+ case VIR_DOMAIN_DEVICE_WATCHDOG:
+ ret = qemuDomainDetachWatchdog(driver, vm, dev->data.watchdog);
+ break;
case VIR_DOMAIN_DEVICE_FS:
case VIR_DOMAIN_DEVICE_INPUT:
case VIR_DOMAIN_DEVICE_SOUND:
case VIR_DOMAIN_DEVICE_VIDEO:
- case VIR_DOMAIN_DEVICE_WATCHDOG:
case VIR_DOMAIN_DEVICE_GRAPHICS:
case VIR_DOMAIN_DEVICE_HUB:
case VIR_DOMAIN_DEVICE_SMARTCARD:
diff --git a/src/qemu/qemu_hotplug.c b/src/qemu/qemu_hotplug.c
index 11afa7ec6..1d95b88c4 100644
--- a/src/qemu/qemu_hotplug.c
+++ b/src/qemu/qemu_hotplug.c
@@ -4337,6 +4337,25 @@ qemuDomainRemoveShmemDevice(virQEMUDriverPtr driver,
}
+static int
+qemuDomainRemoveWatchdog(virQEMUDriverPtr driver,
+ virDomainObjPtr vm,
+ virDomainWatchdogDefPtr watchdog)
+{
+ virObjectEventPtr event = NULL;
+
+ VIR_DEBUG("Removing watchdog %s from domain %p %s",
+ watchdog->info.alias, vm, vm->def->name);
+
+ event = virDomainEventDeviceRemovedNewFromObj(vm, watchdog->info.alias);
+ qemuDomainEventQueue(driver, event);
+ qemuDomainReleaseDeviceAddress(vm, &watchdog->info, NULL);
+ virDomainWatchdogDefFree(vm->def->watchdog);
+ vm->def->watchdog = NULL;
+ return 0;
+}
+
+
int
qemuDomainRemoveDevice(virQEMUDriverPtr driver,
virDomainObjPtr vm,
@@ -5053,6 +5072,54 @@ qemuDomainDetachShmemDevice(virQEMUDriverPtr driver,
}
+int
+qemuDomainDetachWatchdog(virQEMUDriverPtr driver,
+ virDomainObjPtr vm,
+ virDomainWatchdogDefPtr dev)
+{
+ int ret = -1;
+ virDomainWatchdogDefPtr watchdog = vm->def->watchdog;
+ qemuDomainObjPrivatePtr priv = vm->privateData;
+
+ /* While domains can have up to one watchdog, the one supplied by the user
+ * doesn't necessarily match the one domain has. Refuse to detach in such
+ * case. */
+ if (!(watchdog &&
+ watchdog->model == dev->model &&
+ watchdog->action == dev->action &&
+ virDomainDeviceInfoAddressIsEqual(&dev->info, &watchdog->info))) {
+ virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("watchdog device not present in domain configuration"));
+ return -1;
+ }
+
+ if (watchdog->model != VIR_DOMAIN_WATCHDOG_MODEL_I6300ESB) {
+ virReportError(VIR_ERR_OPERATION_UNSUPPORTED,
+ _("hotunplug of watchdog of model %s is not supported"),
+ virDomainWatchdogModelTypeToString(watchdog->model));
+ return -1;
+ }
+
+ qemuDomainMarkDeviceForRemoval(vm, &watchdog->info);
+ qemuDomainObjEnterMonitor(driver, vm);
+
+ ret = qemuMonitorDelDevice(priv->mon, watchdog->info.alias);
+
+ if (qemuDomainObjExitMonitor(driver, vm) < 0)
+ ret = -1;
+
+ if (ret == 0) {
+ if ((ret = qemuDomainWaitForDeviceRemoval(vm)) == 1) {
+ qemuDomainReleaseDeviceAddress(vm, &watchdog->info, NULL);
+ ret = qemuDomainRemoveWatchdog(driver, vm, watchdog);
+ }
+ }
+ qemuDomainResetDeviceRemoval(vm);
+
+ return ret;
+}
+
+
int
qemuDomainDetachNetDevice(virQEMUDriverPtr driver,
virDomainObjPtr vm,
diff --git a/src/qemu/qemu_hotplug.h b/src/qemu/qemu_hotplug.h
index a9dfd8f7a..3455832d6 100644
--- a/src/qemu/qemu_hotplug.h
+++ b/src/qemu/qemu_hotplug.h
@@ -122,6 +122,9 @@ int qemuDomainDetachHostDevice(virQEMUDriverPtr driver,
int qemuDomainDetachShmemDevice(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainShmemDefPtr dev);
+int qemuDomainDetachWatchdog(virQEMUDriverPtr driver,
+ virDomainObjPtr vm,
+ virDomainWatchdogDefPtr watchdog);
int qemuDomainAttachLease(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virDomainLeaseDefPtr lease);
diff --git a/tests/qemuhotplugtest.c b/tests/qemuhotplugtest.c
index b02ae8034..df28a7fbd 100644
--- a/tests/qemuhotplugtest.c
+++ b/tests/qemuhotplugtest.c
@@ -155,6 +155,9 @@ testQemuHotplugDetach(virDomainObjPtr vm,
case VIR_DOMAIN_DEVICE_SHMEM:
ret = qemuDomainDetachShmemDevice(&driver, vm, dev->data.shmem);
break;
+ case VIR_DOMAIN_DEVICE_WATCHDOG:
+ ret = qemuDomainDetachWatchdog(&driver, vm, dev->data.watchdog);
+ break;
default:
VIR_TEST_VERBOSE("device type '%s' cannot be detached\n",
virDomainDeviceTypeToString(dev->type));
@@ -818,9 +821,11 @@ mymain(void)
"human-monitor-command", HMP("OK\\r\\n"),
"device_add", QMP_OK);
- DO_TEST_ATTACH("base-live", "watchdog", false, false,
+ DO_TEST_ATTACH("base-live", "watchdog", false, true,
"watchdog-set-action", QMP_OK,
"device_add", QMP_OK);
+ DO_TEST_DETACH("base-live", "watchdog-full", false, false,
+ "device_del", QMP_OK);
#define DO_TEST_CPU_GROUP(prefix, vcpus, modernhp, expectfail) \
do { \
diff --git a/tests/qemuhotplugtestdevices/qemuhotplug-watchdog-full.xml b/tests/qemuhotplugtestdevices/qemuhotplug-watchdog-full.xml
new file mode 100644
index 000000000..68bbfa87c
--- /dev/null
+++ b/tests/qemuhotplugtestdevices/qemuhotplug-watchdog-full.xml
@@ -0,0 +1,4 @@
+<watchdog model='i6300esb' action='poweroff'>
+ <alias name='watchdog0'/>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/>
+</watchdog>
--
2.13.5
More information about the libvir-list
mailing list