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Add support for SUSPEND_DISK event

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This patch adds support for SUSPEND_DISK event; both lifecycle and
separated.  The support is added for QEMU, machines are changed to
PMSUSPENDED, but as QEMU sends SHUTDOWN afterwards, the state changes
to shut-off.  This and much more needs to be done in order for libvirt
to work with transient devices, wake-ups etc.  This patch is not
aiming for that functionality.
This commit is contained in:
Martin Kletzander 2012-10-12 21:13:39 +02:00
parent a9e3b4f78e
commit 7ba5defb5a
16 changed files with 281 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

25
daemon/remote.c
View File

@ -608,6 +608,30 @@ remoteRelayDomainEventBalloonChange(virConnectPtr conn ATTRIBUTE_UNUSED,
}
static int remoteRelayDomainEventPMSuspendDisk(virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom,
int reason ATTRIBUTE_UNUSED,
void *opaque) {
virNetServerClientPtr client = opaque;
remote_domain_event_pmsuspend_disk_msg data;
if (!client)
return -1;
VIR_DEBUG("Relaying domain %s %d system pmsuspend-disk", dom->name, dom->id);
/* build return data */
memset(&data, 0, sizeof(data));
make_nonnull_domain(&data.dom, dom);
remoteDispatchDomainEventSend(client, remoteProgram,
REMOTE_PROC_DOMAIN_EVENT_PMSUSPEND_DISK,
(xdrproc_t)xdr_remote_domain_event_pmsuspend_disk_msg, &data);
return 0;
}
static virConnectDomainEventGenericCallback domainEventCallbacks[] = {
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventLifecycle),
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventReboot),
@ -623,6 +647,7 @@ static virConnectDomainEventGenericCallback domainEventCallbacks[] = {
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventPMWakeup),
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventPMSuspend),
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventBalloonChange),
VIR_DOMAIN_EVENT_CALLBACK(remoteRelayDomainEventPMSuspendDisk),
};
verify(ARRAY_CARDINALITY(domainEventCallbacks) == VIR_DOMAIN_EVENT_ID_LAST);

22
examples/domain-events/events-c/event-test.c
View File

@ -201,6 +201,9 @@ static const char *eventDetailToString(int event, int detail) {
case VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY:
ret = "Memory";
break;
case VIR_DOMAIN_EVENT_PMSUSPENDED_DISK:
ret = "Disk";
break;
}
break;
}
@ -402,6 +405,16 @@ static int myDomainEventPMSuspendCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
return 0;
}
static int myDomainEventPMSuspendDiskCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom,
int reason ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
printf("%s EVENT: Domain %s(%d) system pmsuspend-disk\n",
__func__, virDomainGetName(dom), virDomainGetID(dom));
return 0;
}
static void myFreeFunc(void *opaque)
{
char *str = opaque;
@ -440,6 +453,7 @@ int main(int argc, char **argv)
int callback11ret = -1;
int callback12ret = -1;
int callback13ret = -1;
int callback14ret = -1;
struct sigaction action_stop;
memset(&action_stop, 0, sizeof(action_stop));
@ -533,6 +547,11 @@ int main(int argc, char **argv)
VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE,
VIR_DOMAIN_EVENT_CALLBACK(myDomainEventBalloonChangeCallback),
strdup("callback balloonchange"), myFreeFunc);
callback14ret = virConnectDomainEventRegisterAny(dconn,
NULL,
VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK,
VIR_DOMAIN_EVENT_CALLBACK(myDomainEventPMSuspendDiskCallback),
strdup("pmsuspend-disk"), myFreeFunc);
if ((callback1ret != -1) &&
(callback2ret != -1) &&
(callback3ret != -1) &&
@ -544,7 +563,8 @@ int main(int argc, char **argv)
(callback10ret != -1) &&
(callback11ret != -1) &&
(callback12ret != -1) &&
(callback13ret != -1)) {
(callback13ret != -1) &&
(callback14ret != -1)) {
if (virConnectSetKeepAlive(dconn, 5, 3) < 0) {
virErrorPtr err = virGetLastError();
fprintf(stderr, "Failed to start keepalive protocol: %s\n",

3
examples/domain-events/events-python/event-test.py
View File

@ -449,7 +449,7 @@ def detailToString(event, detail):
( "Unpaused", "Migrated", "Snapshot" ),
( "Shutdown", "Destroyed", "Crashed", "Migrated", "Saved", "Failed", "Snapshot"),
( "Finished", ),
( "Memory", )
( "Memory", "Disk" )
)
return eventStrings[event][detail]
@ -554,6 +554,7 @@ def main():
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_PMWAKEUP, myDomainEventPMWakeupCallback, None)
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_PMSUSPEND, myDomainEventPMSuspendCallback, None)
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE, myDomainEventBalloonChangeCallback, None)
vc.domainEventRegisterAny(None, libvirt.VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK, myDomainEventPMSuspendDiskCallback, None)
vc.setKeepAlive(5, 3)

29
include/libvirt/libvirt.h.in
View File

@ -225,6 +225,14 @@ typedef enum {
#endif
} virDomainPMSuspendedReason;
typedef enum {
VIR_DOMAIN_PMSUSPENDED_DISK_UNKNOWN = 0,
#ifdef VIR_ENUM_SENTINELS
VIR_DOMAIN_PMSUSPENDED_DISK_LAST
#endif
} virDomainPMSuspendedDiskReason;
/**
* virDomainControlState:
*
@ -3114,6 +3122,7 @@ typedef enum {
*/
typedef enum {
VIR_DOMAIN_EVENT_PMSUSPENDED_MEMORY = 0, /* Guest was PM suspended to memory */
VIR_DOMAIN_EVENT_PMSUSPENDED_DISK = 1, /* Guest was PM suspended to disk */
#ifdef VIR_ENUM_SENTINELS
VIR_DOMAIN_EVENT_PMSUSPENDED_LAST
@ -4163,6 +4172,25 @@ typedef void (*virConnectDomainEventBalloonChangeCallback)(virConnectPtr conn,
unsigned long long actual,
void *opaque);
/**
* virConnectDomainEventPMSuspendDiskCallback:
* @conn: connection object
* @dom: domain on which the event occurred
* @reason: reason why the callback was called, unused currently,
* always passes 0
* @opaque: application specified data
*
* This callback occurs when the guest is suspended to disk.
*
* The callback signature to use when registering for an event of type
* VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK with virConnectDomainEventRegisterAny()
*/
typedef void (*virConnectDomainEventPMSuspendDiskCallback)(virConnectPtr conn,
virDomainPtr dom,
int reason,
void *opaque);
/**
* VIR_DOMAIN_EVENT_CALLBACK:
*
@ -4187,6 +4215,7 @@ typedef enum {
VIR_DOMAIN_EVENT_ID_PMWAKEUP = 11, /* virConnectDomainEventPMWakeupCallback */
VIR_DOMAIN_EVENT_ID_PMSUSPEND = 12, /* virConnectDomainEventPMSuspendCallback */
VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE = 13, /* virConnectDomainEventBalloonChangeCallback */
VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK = 14, /* virConnectDomainEventPMSuspendDiskCallback */
#ifdef VIR_ENUM_SENTINELS
/*

9
python/libvirt-override-virConnect.py
View File

@ -170,6 +170,15 @@
cb(self, virDomain(self, _obj=dom), actual, opaque)
return 0
def _dispatchDomainEventPMSuspendDiskCallback(self, dom, reason, cbData):
"""Dispatches event to python user domain pmsuspend-disk event callbacks
"""
cb = cbData["cb"]
opaque = cbData["opaque"]
cb(self, virDomain(self, _obj=dom), reason, opaque)
return 0;
def domainEventDeregisterAny(self, callbackID):
"""Removes a Domain Event Callback. De-registering for a
domain callback will disable delivery of this event type """

50
python/libvirt-override.c
View File

@ -5812,6 +5812,53 @@ libvirt_virConnectDomainEventBalloonChangeCallback(virConnectPtr conn ATTRIBUTE_
return ret;
}
static int
libvirt_virConnectDomainEventPMSuspendDiskCallback(virConnectPtr conn ATTRIBUTE_UNUSED,
virDomainPtr dom,
int reason,
void *opaque)
{
PyObject *pyobj_cbData = (PyObject*)opaque;
PyObject *pyobj_dom;
PyObject *pyobj_ret;
PyObject *pyobj_conn;
PyObject *dictKey;
int ret = -1;
LIBVIRT_ENSURE_THREAD_STATE;
/* Create a python instance of this virDomainPtr */
virDomainRef(dom);
pyobj_dom = libvirt_virDomainPtrWrap(dom);
Py_INCREF(pyobj_cbData);
dictKey = libvirt_constcharPtrWrap("conn");
pyobj_conn = PyDict_GetItem(pyobj_cbData, dictKey);
Py_DECREF(dictKey);
/* Call the Callback Dispatcher */
pyobj_ret = PyObject_CallMethod(pyobj_conn,
(char*)"_dispatchDomainEventPMSuspendDiskCallback",
(char*)"OiO",
pyobj_dom,
reason,
pyobj_cbData);
Py_DECREF(pyobj_cbData);
Py_DECREF(pyobj_dom);
if(!pyobj_ret) {
DEBUG("%s - ret:%p\n", __FUNCTION__, pyobj_ret);
PyErr_Print();
} else {
Py_DECREF(pyobj_ret);
ret = 0;
}
LIBVIRT_RELEASE_THREAD_STATE;
return ret;
}
static PyObject *
libvirt_virConnectDomainEventRegisterAny(ATTRIBUTE_UNUSED PyObject * self,
PyObject * args)
@ -5884,6 +5931,9 @@ libvirt_virConnectDomainEventRegisterAny(ATTRIBUTE_UNUSED PyObject * self,
case VIR_DOMAIN_EVENT_ID_BALLOON_CHANGE:
cb = VIR_DOMAIN_EVENT_CALLBACK(libvirt_virConnectDomainEventBalloonChangeCallback);
break;
case VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK:
cb = VIR_DOMAIN_EVENT_CALLBACK(libvirt_virConnectDomainEventPMSuspendDiskCallback);
break;
}
if (!cb) {

30
src/conf/domain_event.c
View File

@ -1,7 +1,7 @@
/*
* domain_event.c: domain event queue processing helpers
*
* Copyright (C) 2010-2011 Red Hat, Inc.
* Copyright (C) 2010-2012 Red Hat, Inc.
* Copyright (C) 2008 VirtualIron
*
* This library is free software; you can redistribute it and/or
@ -1125,6 +1125,30 @@ virDomainEventPMSuspendNewFromDom(virDomainPtr dom)
return virDomainEventPMSuspendNew(dom->id, dom->name, dom->uuid);
}
static virDomainEventPtr
virDomainEventPMSuspendDiskNew(int id, const char *name,
unsigned char *uuid)
{
virDomainEventPtr ev =
virDomainEventNewInternal(VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK,
id, name, uuid);
return ev;
}
virDomainEventPtr
virDomainEventPMSuspendDiskNewFromObj(virDomainObjPtr obj)
{
return virDomainEventPMSuspendDiskNew(obj->def->id,
obj->def->name,
obj->def->uuid);
}
virDomainEventPtr
virDomainEventPMSuspendDiskNewFromDom(virDomainPtr dom)
{
return virDomainEventPMSuspendDiskNew(dom->id, dom->name, dom->uuid);
}
virDomainEventPtr virDomainEventBalloonChangeNewFromDom(virDomainPtr dom,
unsigned long long actual)
{
@ -1294,6 +1318,10 @@ virDomainEventDispatchDefaultFunc(virConnectPtr conn,
cbopaque);
break;
case VIR_DOMAIN_EVENT_ID_PMSUSPEND_DISK:
((virConnectDomainEventPMSuspendDiskCallback)cb)(conn, dom, 0, cbopaque);
break;
default:
VIR_WARN("Unexpected event ID %d", event->eventID);
break;

4
src/conf/domain_event.h
View File

@ -1,6 +1,7 @@
/*
* domain_event.h: domain event queue processing helpers
*
* Copyright (C) 2012 Red Hat, Inc.
* Copyright (C) 2008 VirtualIron
*
* This library is free software; you can redistribute it and/or
@ -128,6 +129,9 @@ virDomainEventPtr virDomainEventPMSuspendNewFromDom(virDomainPtr dom);
virDomainEventPtr virDomainEventBalloonChangeNewFromDom(virDomainPtr dom, unsigned long long actual);
virDomainEventPtr virDomainEventBalloonChangeNewFromObj(virDomainObjPtr obj, unsigned long long actual);
virDomainEventPtr virDomainEventPMSuspendDiskNewFromObj(virDomainObjPtr obj);
virDomainEventPtr virDomainEventPMSuspendDiskNewFromDom(virDomainPtr dom);
void virDomainEventFree(virDomainEventPtr event);
void virDomainEventStateFree(virDomainEventStatePtr state);

2
src/libvirt_private.syms
View File

@ -587,6 +587,8 @@ virDomainEventStateRegisterID;
virDomainEventStateFree;
virDomainEventStateNew;
virDomainEventStateQueue;
virDomainEventPMSuspendDiskNewFromDom;
virDomainEventPMSuspendDiskNewFromObj;
virDomainEventTrayChangeNewFromDom;
virDomainEventTrayChangeNewFromObj;
virDomainEventWatchdogNewFromDom;

10
src/qemu/qemu_monitor.c
View File

@ -1111,6 +1111,16 @@ int qemuMonitorEmitPMSuspend(qemuMonitorPtr mon)
return ret;
}
int qemuMonitorEmitPMSuspendDisk(qemuMonitorPtr mon)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
QEMU_MONITOR_CALLBACK(mon, ret, domainPMSuspendDisk, mon->vm);
return ret;
}
int qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
const char *diskAlias,
int type,

3
src/qemu/qemu_monitor.h
View File

@ -136,6 +136,8 @@ struct _qemuMonitorCallbacks {
int (*domainBalloonChange)(qemuMonitorPtr mon,
virDomainObjPtr vm,
unsigned long long actual);
int (*domainPMSuspendDisk)(qemuMonitorPtr mon,
virDomainObjPtr vm);
};
char *qemuMonitorEscapeArg(const char *in);
@ -213,6 +215,7 @@ int qemuMonitorEmitBlockJob(qemuMonitorPtr mon,
int status);
int qemuMonitorEmitBalloonChange(qemuMonitorPtr mon,
unsigned long long actual);
int qemuMonitorEmitPMSuspendDisk(qemuMonitorPtr mon);
int qemuMonitorStartCPUs(qemuMonitorPtr mon,
virConnectPtr conn);

9
src/qemu/qemu_monitor_json.c
View File

@ -70,6 +70,7 @@ static void qemuMonitorJSONHandlePMSuspend(qemuMonitorPtr mon, virJSONValuePtr d
static void qemuMonitorJSONHandleBlockJobCompleted(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleBlockJobCanceled(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandleBalloonChange(qemuMonitorPtr mon, virJSONValuePtr data);
static void qemuMonitorJSONHandlePMSuspendDisk(qemuMonitorPtr mon, virJSONValuePtr data);
typedef struct {
const char *type;
@ -91,6 +92,7 @@ static qemuEventHandler eventHandlers[] = {
{ "SPICE_INITIALIZED", qemuMonitorJSONHandleSPICEInitialize, },
{ "STOP", qemuMonitorJSONHandleStop, },
{ "SUSPEND", qemuMonitorJSONHandlePMSuspend, },
{ "SUSPEND_DISK", qemuMonitorJSONHandlePMSuspendDisk, },
{ "VNC_CONNECTED", qemuMonitorJSONHandleVNCConnect, },
{ "VNC_DISCONNECTED", qemuMonitorJSONHandleVNCDisconnect, },
{ "VNC_INITIALIZED", qemuMonitorJSONHandleVNCInitialize, },
@ -891,6 +893,13 @@ qemuMonitorJSONHandleBalloonChange(qemuMonitorPtr mon,
qemuMonitorEmitBalloonChange(mon, actual);
}
static void
qemuMonitorJSONHandlePMSuspendDisk(qemuMonitorPtr mon,
virJSONValuePtr data ATTRIBUTE_UNUSED)
{
qemuMonitorEmitPMSuspendDisk(mon);
}
int
qemuMonitorJSONHumanCommandWithFd(qemuMonitorPtr mon,
const char *cmd_str,

47
src/qemu/qemu_process.c
View File

@ -1178,6 +1178,52 @@ qemuProcessHandleBalloonChange(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
return 0;
}
static int
qemuProcessHandlePMSuspendDisk(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
virDomainObjPtr vm)
{
struct qemud_driver *driver = qemu_driver;
virDomainEventPtr event = NULL;
virDomainEventPtr lifecycleEvent = NULL;
virDomainObjLock(vm);
event = virDomainEventPMSuspendDiskNewFromObj(vm);
if (virDomainObjGetState(vm, NULL) == VIR_DOMAIN_RUNNING) {
qemuDomainObjPrivatePtr priv = vm->privateData;
VIR_DEBUG("Transitioned guest %s to pmsuspended state due to "
"QMP suspend_disk event", vm->def->name);
virDomainObjSetState(vm, VIR_DOMAIN_PMSUSPENDED,
VIR_DOMAIN_PMSUSPENDED_UNKNOWN);
lifecycleEvent =
virDomainEventNewFromObj(vm,
VIR_DOMAIN_EVENT_PMSUSPENDED,
VIR_DOMAIN_EVENT_PMSUSPENDED_DISK);
if (virDomainSaveStatus(driver->caps, driver->stateDir, vm) < 0) {
VIR_WARN("Unable to save status on vm %s after suspend event",
vm->def->name);
}
if (priv->agent)
qemuAgentNotifyEvent(priv->agent, QEMU_AGENT_EVENT_SUSPEND);
}
virDomainObjUnlock(vm);
if (event || lifecycleEvent) {
qemuDriverLock(driver);
if (event)
qemuDomainEventQueue(driver, event);
if (lifecycleEvent)
qemuDomainEventQueue(driver, lifecycleEvent);
qemuDriverUnlock(driver);
}
return 0;
}
static qemuMonitorCallbacks monitorCallbacks = {
.destroy = qemuProcessHandleMonitorDestroy,
@ -1196,6 +1242,7 @@ static qemuMonitorCallbacks monitorCallbacks = {
.domainPMWakeup = qemuProcessHandlePMWakeup,
.domainPMSuspend = qemuProcessHandlePMSuspend,
.domainBalloonChange = qemuProcessHandleBalloonChange,
.domainPMSuspendDisk = qemuProcessHandlePMSuspendDisk,
};
static int

31
src/remote/remote_driver.c
View File

@ -253,6 +253,10 @@ static void
remoteDomainBuildEventBalloonChange(virNetClientProgramPtr prog,
virNetClientPtr client,
void *evdata, void *opaque);
static void
remoteDomainBuildEventPMSuspendDisk(virNetClientProgramPtr prog,
virNetClientPtr client,
void *evdata, void *opaque);
static virNetClientProgramEvent remoteDomainEvents[] = {
{ REMOTE_PROC_DOMAIN_EVENT_RTC_CHANGE,
@ -311,6 +315,10 @@ static virNetClientProgramEvent remoteDomainEvents[] = {
remoteDomainBuildEventBalloonChange,
sizeof(remote_domain_event_balloon_change_msg),
(xdrproc_t)xdr_remote_domain_event_balloon_change_msg },
{ REMOTE_PROC_DOMAIN_EVENT_PMSUSPEND_DISK,
remoteDomainBuildEventPMSuspendDisk,
sizeof(remote_domain_event_pmsuspend_disk_msg),
(xdrproc_t)xdr_remote_domain_event_pmsuspend_disk_msg },
};
enum virDrvOpenRemoteFlags {
@ -4575,6 +4583,29 @@ remoteDomainBuildEventBalloonChange(virNetClientProgramPtr prog ATTRIBUTE_UNUSED
}
static void
remoteDomainBuildEventPMSuspendDisk(virNetClientProgramPtr prog ATTRIBUTE_UNUSED,
virNetClientPtr client ATTRIBUTE_UNUSED,
void *evdata, void *opaque)
{
virConnectPtr conn = opaque;
struct private_data *priv = conn->privateData;
remote_domain_event_pmsuspend_disk_msg *msg = evdata;
virDomainPtr dom;
virDomainEventPtr event = NULL;
dom = get_nonnull_domain(conn, msg->dom);
if (!dom)
return;
event = virDomainEventPMSuspendDiskNewFromDom(dom);
virDomainFree(dom);
remoteDomainEventQueue(priv, event);
}
static virDrvOpenStatus ATTRIBUTE_NONNULL (1)
remoteSecretOpen(virConnectPtr conn, virConnectAuthPtr auth,
unsigned int flags)

7
src/remote/remote_protocol.x
View File

@ -2259,6 +2259,10 @@ struct remote_domain_event_balloon_change_msg {
unsigned hyper actual;
};
struct remote_domain_event_pmsuspend_disk_msg {
remote_nonnull_domain dom;
};
struct remote_domain_managed_save_args {
remote_nonnull_domain dom;
unsigned int flags;
@ -3008,7 +3012,8 @@ enum remote_procedure {
REMOTE_PROC_NODE_GET_MEMORY_PARAMETERS = 289, /* skipgen skipgen */
REMOTE_PROC_DOMAIN_BLOCK_COMMIT = 290, /* autogen autogen */
REMOTE_PROC_NETWORK_UPDATE = 291 /* autogen autogen priority:high */
REMOTE_PROC_NETWORK_UPDATE = 291, /* autogen autogen priority:high */
REMOTE_PROC_DOMAIN_EVENT_PMSUSPEND_DISK = 292 /* autogen autogen */
/*
* Notice how the entries are grouped in sets of 10 ?

4
src/remote_protocol-structs
View File

@ -1718,6 +1718,9 @@ struct remote_domain_event_balloon_change_msg {
remote_nonnull_domain dom;
uint64_t actual;
};
struct remote_domain_event_pmsuspend_disk_msg {
remote_nonnull_domain dom;
};
struct remote_domain_managed_save_args {
remote_nonnull_domain dom;
u_int flags;
@ -2415,4 +2418,5 @@ enum remote_procedure {
REMOTE_PROC_NODE_GET_MEMORY_PARAMETERS = 289,
REMOTE_PROC_DOMAIN_BLOCK_COMMIT = 290,
REMOTE_PROC_NETWORK_UPDATE = 291,
REMOTE_PROC_DOMAIN_EVENT_PMSUSPEND_DISK = 292,
};