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libxl_domain.c
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libxl_domain.c
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/*
* libxl_domain.c: libxl domain object private state
*
* Copyright (C) 2011-2015 SUSE LINUX Products GmbH, Nuernberg, Germany.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Authors:
* Jim Fehlig <jfehlig@suse.com>
*/
#include <config.h>
#include <fcntl.h>
#include "libxl_domain.h"
#include "libxl_capabilities.h"
#include "viralloc.h"
#include "viratomic.h"
#include "virfile.h"
#include "virerror.h"
#include "virhook.h"
#include "virlog.h"
#include "virstring.h"
#include "virtime.h"
#include "locking/domain_lock.h"
#include "xen_common.h"
#include "network/bridge_driver.h"
#define VIR_FROM_THIS VIR_FROM_LIBXL
VIR_LOG_INIT("libxl.libxl_domain");
VIR_ENUM_IMPL(libxlDomainJob, LIBXL_JOB_LAST,
"none",
"query",
"destroy",
"modify",
);
static virClassPtr libxlDomainObjPrivateClass;
static void
libxlDomainObjPrivateDispose(void *obj);
static int
libxlDomainObjPrivateOnceInit(void)
{
if (!(libxlDomainObjPrivateClass = virClassNew(virClassForObjectLockable(),
"libxlDomainObjPrivate",
sizeof(libxlDomainObjPrivate),
libxlDomainObjPrivateDispose)))
return -1;
return 0;
}
VIR_ONCE_GLOBAL_INIT(libxlDomainObjPrivate)
static int
libxlDomainObjInitJob(libxlDomainObjPrivatePtr priv)
{
memset(&priv->job, 0, sizeof(priv->job));
if (virCondInit(&priv->job.cond) < 0)
return -1;
if (VIR_ALLOC(priv->job.current) < 0)
return -1;
return 0;
}
static void
libxlDomainObjResetJob(libxlDomainObjPrivatePtr priv)
{
struct libxlDomainJobObj *job = &priv->job;
job->active = LIBXL_JOB_NONE;
job->owner = 0;
}
static void
libxlDomainObjFreeJob(libxlDomainObjPrivatePtr priv)
{
ignore_value(virCondDestroy(&priv->job.cond));
VIR_FREE(priv->job.current);
}
/* Give up waiting for mutex after 30 seconds */
#define LIBXL_JOB_WAIT_TIME (1000ull * 30)
/*
* obj must be locked before calling, libxlDriverPrivatePtr must NOT be locked
*
* This must be called by anything that will change the VM state
* in any way
*
* Upon successful return, the object will have its ref count increased,
* successful calls must be followed by EndJob eventually
*/
int
libxlDomainObjBeginJob(libxlDriverPrivatePtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr obj,
enum libxlDomainJob job)
{
libxlDomainObjPrivatePtr priv = obj->privateData;
unsigned long long now;
unsigned long long then;
if (virTimeMillisNow(&now) < 0)
return -1;
then = now + LIBXL_JOB_WAIT_TIME;
while (priv->job.active) {
VIR_DEBUG("Wait normal job condition for starting job: %s",
libxlDomainJobTypeToString(job));
if (virCondWaitUntil(&priv->job.cond, &obj->parent.lock, then) < 0)
goto error;
}
libxlDomainObjResetJob(priv);
VIR_DEBUG("Starting job: %s", libxlDomainJobTypeToString(job));
priv->job.active = job;
priv->job.owner = virThreadSelfID();
priv->job.started = now;
priv->job.current->type = VIR_DOMAIN_JOB_UNBOUNDED;
return 0;
error:
VIR_WARN("Cannot start job (%s) for domain %s;"
" current job is (%s) owned by (%d)",
libxlDomainJobTypeToString(job),
obj->def->name,
libxlDomainJobTypeToString(priv->job.active),
priv->job.owner);
if (errno == ETIMEDOUT)
virReportError(VIR_ERR_OPERATION_TIMEOUT,
"%s", _("cannot acquire state change lock"));
else
virReportSystemError(errno,
"%s", _("cannot acquire job mutex"));
return -1;
}
/*
* obj must be locked before calling
*
* To be called after completing the work associated with the
* earlier libxlDomainBeginJob() call
*
* Returns true if the remaining reference count on obj is
* non-zero, false if the reference count has dropped to zero
* and obj is disposed.
*/
void
libxlDomainObjEndJob(libxlDriverPrivatePtr driver ATTRIBUTE_UNUSED,
virDomainObjPtr obj)
{
libxlDomainObjPrivatePtr priv = obj->privateData;
enum libxlDomainJob job = priv->job.active;
VIR_DEBUG("Stopping job: %s",
libxlDomainJobTypeToString(job));
libxlDomainObjResetJob(priv);
virCondSignal(&priv->job.cond);
}
int
libxlDomainJobUpdateTime(struct libxlDomainJobObj *job)
{
virDomainJobInfoPtr jobInfo = job->current;
unsigned long long now;
if (!job->started)
return 0;
if (virTimeMillisNow(&now) < 0)
return -1;
if (now < job->started) {
job->started = 0;
return 0;
}
jobInfo->timeElapsed = now - job->started;
return 0;
}
static void *
libxlDomainObjPrivateAlloc(void)
{
libxlDomainObjPrivatePtr priv;
if (libxlDomainObjPrivateInitialize() < 0)
return NULL;
if (!(priv = virObjectLockableNew(libxlDomainObjPrivateClass)))
return NULL;
if (!(priv->devs = virChrdevAlloc())) {
virObjectUnref(priv);
return NULL;
}
if (libxlDomainObjInitJob(priv) < 0) {
virChrdevFree(priv->devs);
virObjectUnref(priv);
return NULL;
}
return priv;
}
static void
libxlDomainObjPrivateDispose(void *obj)
{
libxlDomainObjPrivatePtr priv = obj;
libxlDomainObjFreeJob(priv);
virChrdevFree(priv->devs);
}
static void
libxlDomainObjPrivateFree(void *data)
{
libxlDomainObjPrivatePtr priv = data;
VIR_FREE(priv->lockState);
virObjectUnref(priv);
}
static int
libxlDomainObjPrivateXMLParse(xmlXPathContextPtr ctxt,
virDomainObjPtr vm,
virDomainDefParserConfigPtr config ATTRIBUTE_UNUSED)
{
libxlDomainObjPrivatePtr priv = vm->privateData;
priv->lockState = virXPathString("string(./lockstate)", ctxt);
return 0;
}
static int
libxlDomainObjPrivateXMLFormat(virBufferPtr buf,
virDomainObjPtr vm)
{
libxlDomainObjPrivatePtr priv = vm->privateData;
if (priv->lockState)
virBufferAsprintf(buf, "<lockstate>%s</lockstate>\n", priv->lockState);
return 0;
}
virDomainXMLPrivateDataCallbacks libxlDomainXMLPrivateDataCallbacks = {
.alloc = libxlDomainObjPrivateAlloc,
.free = libxlDomainObjPrivateFree,
.parse = libxlDomainObjPrivateXMLParse,
.format = libxlDomainObjPrivateXMLFormat,
};
static int
libxlDomainDeviceDefPostParse(virDomainDeviceDefPtr dev,
const virDomainDef *def,
virCapsPtr caps ATTRIBUTE_UNUSED,
unsigned int parseFlags ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED,
void *parseOpaque ATTRIBUTE_UNUSED)
{
if (dev->type == VIR_DOMAIN_DEVICE_CHR &&
dev->data.chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE &&
dev->data.chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_NONE &&
def->os.type != VIR_DOMAIN_OSTYPE_HVM)
dev->data.chr->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_XEN;
if (dev->type == VIR_DOMAIN_DEVICE_NET &&
(dev->data.net->type == VIR_DOMAIN_NET_TYPE_BRIDGE ||
dev->data.net->type == VIR_DOMAIN_NET_TYPE_ETHERNET ||
dev->data.net->type == VIR_DOMAIN_NET_TYPE_NETWORK)) {
if (dev->data.net->guestIP.nips > 1) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("multiple IP addresses not supported on device type %s"),
virDomainNetTypeToString(dev->data.net->type));
return -1;
}
}
if (dev->type == VIR_DOMAIN_DEVICE_HOSTDEV ||
(dev->type == VIR_DOMAIN_DEVICE_NET &&
dev->data.net->type == VIR_DOMAIN_NET_TYPE_HOSTDEV)) {
virDomainHostdevDefPtr hostdev;
virDomainHostdevSubsysPCIPtr pcisrc;
if (dev->type == VIR_DOMAIN_DEVICE_NET)
hostdev = &dev->data.net->data.hostdev.def;
else
hostdev = dev->data.hostdev;
pcisrc = &hostdev->source.subsys.u.pci;
/* forbid capabilities mode hostdev in this kind of hypervisor */
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_CAPABILITIES) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("hostdev mode 'capabilities' is not "
"supported in %s"),
virDomainVirtTypeToString(def->virtType));
return -1;
}
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI &&
pcisrc->backend == VIR_DOMAIN_HOSTDEV_PCI_BACKEND_DEFAULT)
pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN;
}
if (dev->type == VIR_DOMAIN_DEVICE_VIDEO && def->os.type == VIR_DOMAIN_OSTYPE_HVM) {
int dm_type = libxlDomainGetEmulatorType(def);
switch (dev->data.video->type) {
case VIR_DOMAIN_VIDEO_TYPE_VGA:
case VIR_DOMAIN_VIDEO_TYPE_XEN:
if (dev->data.video->vram == 0) {
if (dm_type == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN)
dev->data.video->vram = 16 * 1024;
else
dev->data.video->vram = 8 * 1024;
}
break;
case VIR_DOMAIN_VIDEO_TYPE_CIRRUS:
if (dev->data.video->vram == 0) {
if (dm_type == LIBXL_DEVICE_MODEL_VERSION_QEMU_XEN)
dev->data.video->vram = 8 * 1024;
else
dev->data.video->vram = 4 * 1024;
}
break;
case VIR_DOMAIN_VIDEO_TYPE_QXL:
if (dev->data.video->vram == 0)
dev->data.video->vram = 128 * 1024;
break;
}
}
/* for network-based disks, set 'qemu' as the default driver */
if (dev->type == VIR_DOMAIN_DEVICE_DISK) {
virDomainDiskDefPtr disk = dev->data.disk;
int actual_type = virStorageSourceGetActualType(disk->src);
if (actual_type == VIR_STORAGE_TYPE_NETWORK) {
if (!virDomainDiskGetDriver(disk) &&
virDomainDiskSetDriver(disk, "qemu") < 0)
return -1;
}
}
return 0;
}
static int
libxlDomainDefPostParse(virDomainDefPtr def,
virCapsPtr caps ATTRIBUTE_UNUSED,
unsigned int parseFlags ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED,
void *parseOpaque ATTRIBUTE_UNUSED)
{
/* Xen PV domains always have a PV console, so add one to the domain config
* via post-parse callback if not explicitly specified in the XML. */
if (def->os.type != VIR_DOMAIN_OSTYPE_HVM && def->nconsoles == 0) {
virDomainChrDefPtr chrdef;
if (!(chrdef = virDomainChrDefNew()))
return -1;
chrdef->source.type = VIR_DOMAIN_CHR_TYPE_PTY;
chrdef->deviceType = VIR_DOMAIN_CHR_DEVICE_TYPE_CONSOLE;
chrdef->target.port = 0;
chrdef->targetType = VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_XEN;
if (VIR_ALLOC_N(def->consoles, 1) < 0) {
virDomainChrDefFree(chrdef);
return -1;
}
def->nconsoles = 1;
def->consoles[0] = chrdef;
}
/* add implicit input devices */
if (xenDomainDefAddImplicitInputDevice(def) < 0)
return -1;
return 0;
}
virDomainDefParserConfig libxlDomainDefParserConfig = {
.macPrefix = { 0x00, 0x16, 0x3e },
.devicesPostParseCallback = libxlDomainDeviceDefPostParse,
.domainPostParseCallback = libxlDomainDefPostParse,
};
struct libxlShutdownThreadInfo
{
libxlDriverPrivatePtr driver;
libxl_event *event;
};
static void
libxlDomainShutdownThread(void *opaque)
{
struct libxlShutdownThreadInfo *shutdown_info = opaque;
virDomainObjPtr vm = NULL;
libxl_event *ev = shutdown_info->event;
libxlDriverPrivatePtr driver = shutdown_info->driver;
virObjectEventPtr dom_event = NULL;
libxl_shutdown_reason xl_reason = ev->u.domain_shutdown.shutdown_reason;
libxlDriverConfigPtr cfg;
cfg = libxlDriverConfigGet(driver);
vm = virDomainObjListFindByIDRef(driver->domains, ev->domid);
if (!vm) {
VIR_INFO("Received event for unknown domain ID %d", ev->domid);
goto cleanup;
}
if (libxlDomainObjBeginJob(driver, vm, LIBXL_JOB_MODIFY) < 0)
goto cleanup;
if (xl_reason == LIBXL_SHUTDOWN_REASON_POWEROFF) {
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF,
VIR_DOMAIN_SHUTOFF_SHUTDOWN);
dom_event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN);
switch ((virDomainLifecycleAction) vm->def->onPoweroff) {
case VIR_DOMAIN_LIFECYCLE_DESTROY:
goto destroy;
case VIR_DOMAIN_LIFECYCLE_RESTART:
case VIR_DOMAIN_LIFECYCLE_RESTART_RENAME:
goto restart;
case VIR_DOMAIN_LIFECYCLE_PRESERVE:
case VIR_DOMAIN_LIFECYCLE_LAST:
goto endjob;
}
} else if (xl_reason == LIBXL_SHUTDOWN_REASON_CRASH) {
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF,
VIR_DOMAIN_SHUTOFF_CRASHED);
dom_event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_CRASHED);
switch ((virDomainLifecycleCrashAction) vm->def->onCrash) {
case VIR_DOMAIN_LIFECYCLE_CRASH_DESTROY:
goto destroy;
case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART:
case VIR_DOMAIN_LIFECYCLE_CRASH_RESTART_RENAME:
goto restart;
case VIR_DOMAIN_LIFECYCLE_CRASH_PRESERVE:
case VIR_DOMAIN_LIFECYCLE_CRASH_LAST:
goto endjob;
case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_DESTROY:
libxlDomainAutoCoreDump(driver, vm);
goto destroy;
case VIR_DOMAIN_LIFECYCLE_CRASH_COREDUMP_RESTART:
libxlDomainAutoCoreDump(driver, vm);
goto restart;
}
} else if (xl_reason == LIBXL_SHUTDOWN_REASON_REBOOT) {
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF,
VIR_DOMAIN_SHUTOFF_SHUTDOWN);
dom_event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_STOPPED,
VIR_DOMAIN_EVENT_STOPPED_SHUTDOWN);
switch ((virDomainLifecycleAction) vm->def->onReboot) {
case VIR_DOMAIN_LIFECYCLE_DESTROY:
goto destroy;
case VIR_DOMAIN_LIFECYCLE_RESTART:
case VIR_DOMAIN_LIFECYCLE_RESTART_RENAME:
goto restart;
case VIR_DOMAIN_LIFECYCLE_PRESERVE:
case VIR_DOMAIN_LIFECYCLE_LAST:
goto endjob;
}
} else {
VIR_INFO("Unhandled shutdown_reason %d", xl_reason);
goto endjob;
}
destroy:
if (dom_event) {
libxlDomainEventQueue(driver, dom_event);
dom_event = NULL;
}
libxlDomainDestroyInternal(driver, vm);
libxlDomainCleanup(driver, vm);
if (!vm->persistent)
virDomainObjListRemove(driver->domains, vm);
goto endjob;
restart:
if (dom_event) {
libxlDomainEventQueue(driver, dom_event);
dom_event = NULL;
}
libxlDomainDestroyInternal(driver, vm);
libxlDomainCleanup(driver, vm);
if (libxlDomainStartNew(driver, vm, false) < 0) {
VIR_ERROR(_("Failed to restart VM '%s': %s"),
vm->def->name, virGetLastErrorMessage());
}
endjob:
libxlDomainObjEndJob(driver, vm);
cleanup:
virDomainObjEndAPI(&vm);
if (dom_event)
libxlDomainEventQueue(driver, dom_event);
libxl_event_free(cfg->ctx, ev);
VIR_FREE(shutdown_info);
virObjectUnref(cfg);
}
/*
* Handle previously registered domain event notification from libxenlight.
*/
void
libxlDomainEventHandler(void *data, VIR_LIBXL_EVENT_CONST libxl_event *event)
{
libxlDriverPrivatePtr driver = data;
libxl_shutdown_reason xl_reason = event->u.domain_shutdown.shutdown_reason;
struct libxlShutdownThreadInfo *shutdown_info = NULL;
virThread thread;
libxlDriverConfigPtr cfg;
if (event->type != LIBXL_EVENT_TYPE_DOMAIN_SHUTDOWN) {
VIR_INFO("Unhandled event type %d", event->type);
goto error;
}
/*
* Similar to the xl implementation, ignore SUSPEND. Any actions needed
* after calling libxl_domain_suspend() are handled by its callers.
*/
if (xl_reason == LIBXL_SHUTDOWN_REASON_SUSPEND)
goto error;
/*
* Start a thread to handle shutdown. We don't want to be tying up
* libxl's event machinery by doing a potentially lengthy shutdown.
*/
if (VIR_ALLOC(shutdown_info) < 0)
goto error;
shutdown_info->driver = driver;
shutdown_info->event = (libxl_event *)event;
if (virThreadCreate(&thread, false, libxlDomainShutdownThread,
shutdown_info) < 0) {
/*
* Not much we can do on error here except log it.
*/
VIR_ERROR(_("Failed to create thread to handle domain shutdown"));
goto error;
}
/*
* libxlShutdownThreadInfo and libxl_event are freed in shutdown thread
*/
return;
error:
cfg = libxlDriverConfigGet(driver);
/* Cast away any const */
libxl_event_free(cfg->ctx, (libxl_event *)event);
virObjectUnref(cfg);
VIR_FREE(shutdown_info);
}
void
libxlDomainEventQueue(libxlDriverPrivatePtr driver, virObjectEventPtr event)
{
virObjectEventStateQueue(driver->domainEventState, event);
}
char *
libxlDomainManagedSavePath(libxlDriverPrivatePtr driver, virDomainObjPtr vm)
{
char *ret;
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
ignore_value(virAsprintf(&ret, "%s/%s.save", cfg->saveDir, vm->def->name));
virObjectUnref(cfg);
return ret;
}
/*
* Open a saved image file and initialize domain definition from the header.
*
* Returns the opened fd on success, -1 on failure.
*/
int
libxlDomainSaveImageOpen(libxlDriverPrivatePtr driver,
libxlDriverConfigPtr cfg,
const char *from,
virDomainDefPtr *ret_def,
libxlSavefileHeaderPtr ret_hdr)
{
int fd;
virDomainDefPtr def = NULL;
libxlSavefileHeader hdr;
char *xml = NULL;
if ((fd = virFileOpenAs(from, O_RDONLY, 0, -1, -1, 0)) < 0) {
virReportSystemError(-fd,
_("Failed to open domain image file '%s'"), from);
goto error;
}
if (saferead(fd, &hdr, sizeof(hdr)) != sizeof(hdr)) {
virReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("failed to read libxl header"));
goto error;
}
if (memcmp(hdr.magic, LIBXL_SAVE_MAGIC, sizeof(hdr.magic))) {
virReportError(VIR_ERR_INVALID_ARG, "%s", _("image magic is incorrect"));
goto error;
}
if (hdr.version > LIBXL_SAVE_VERSION) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("image version is not supported (%d > %d)"),
hdr.version, LIBXL_SAVE_VERSION);
goto error;
}
if (hdr.xmlLen <= 0) {
virReportError(VIR_ERR_OPERATION_FAILED,
_("invalid XML length: %d"), hdr.xmlLen);
goto error;
}
if (VIR_ALLOC_N(xml, hdr.xmlLen) < 0)
goto error;
if (saferead(fd, xml, hdr.xmlLen) != hdr.xmlLen) {
virReportError(VIR_ERR_OPERATION_FAILED, "%s", _("failed to read XML"));
goto error;
}
if (!(def = virDomainDefParseString(xml, cfg->caps, driver->xmlopt, NULL,
VIR_DOMAIN_DEF_PARSE_INACTIVE |
VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE)))
goto error;
VIR_FREE(xml);
*ret_def = def;
*ret_hdr = hdr;
return fd;
error:
VIR_FREE(xml);
virDomainDefFree(def);
VIR_FORCE_CLOSE(fd);
return -1;
}
/*
* Internal domain destroy function.
*
* virDomainObjPtr must be locked on invocation
*/
int
libxlDomainDestroyInternal(libxlDriverPrivatePtr driver,
virDomainObjPtr vm)
{
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
int ret = -1;
/* Unlock virDomainObj during destroy, which can take considerable
* time on large memory domains.
*/
virObjectUnlock(vm);
ret = libxl_domain_destroy(cfg->ctx, vm->def->id, NULL);
virObjectLock(vm);
virObjectUnref(cfg);
return ret;
}
/*
* Cleanup function for domain that has reached shutoff state.
*
* virDomainObjPtr must be locked on invocation
*/
void
libxlDomainCleanup(libxlDriverPrivatePtr driver,
virDomainObjPtr vm)
{
libxlDomainObjPrivatePtr priv = vm->privateData;
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
int vnc_port;
char *file;
virHostdevManagerPtr hostdev_mgr = driver->hostdevMgr;
unsigned int hostdev_flags = VIR_HOSTDEV_SP_PCI;
#ifdef LIBXL_HAVE_PVUSB
hostdev_flags |= VIR_HOSTDEV_SP_USB;
#endif
/* now that we know it's stopped call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LIBXL)) {
char *xml = virDomainDefFormat(vm->def, cfg->caps, 0);
/* we can't stop the operation even if the script raised an error */
ignore_value(virHookCall(VIR_HOOK_DRIVER_LIBXL, vm->def->name,
VIR_HOOK_LIBXL_OP_STOPPED, VIR_HOOK_SUBOP_END,
NULL, xml, NULL));
VIR_FREE(xml);
}
virHostdevReAttachDomainDevices(hostdev_mgr, LIBXL_DRIVER_NAME,
vm->def, hostdev_flags, NULL);
VIR_FREE(priv->lockState);
if (virDomainLockProcessPause(driver->lockManager, vm, &priv->lockState) < 0)
VIR_WARN("Unable to release lease on %s", vm->def->name);
VIR_DEBUG("Preserving lock state '%s'", NULLSTR(priv->lockState));
vm->def->id = -1;
if (priv->deathW) {
libxl_evdisable_domain_death(cfg->ctx, priv->deathW);
priv->deathW = NULL;
}
if (virAtomicIntDecAndTest(&driver->nactive) && driver->inhibitCallback)
driver->inhibitCallback(false, driver->inhibitOpaque);
if ((vm->def->ngraphics == 1) &&
vm->def->graphics[0]->type == VIR_DOMAIN_GRAPHICS_TYPE_VNC &&
vm->def->graphics[0]->data.vnc.autoport) {
vnc_port = vm->def->graphics[0]->data.vnc.port;
if (vnc_port >= LIBXL_VNC_PORT_MIN) {
if (virPortAllocatorRelease(driver->reservedGraphicsPorts,
vnc_port) < 0)
VIR_DEBUG("Could not mark port %d as unused", vnc_port);
}
}
if ((vm->def->nnets)) {
size_t i;
for (i = 0; i < vm->def->nnets; i++) {
virDomainNetDefPtr net = vm->def->nets[i];
if (net->ifname &&
STRPREFIX(net->ifname, LIBXL_GENERATED_PREFIX_XEN))
VIR_FREE(net->ifname);
/* cleanup actual device */
virDomainNetRemoveHostdev(vm->def, net);
networkReleaseActualDevice(vm->def, net);
}
}
if (virAsprintf(&file, "%s/%s.xml", cfg->stateDir, vm->def->name) > 0) {
if (unlink(file) < 0 && errno != ENOENT && errno != ENOTDIR)
VIR_DEBUG("Failed to remove domain XML for %s", vm->def->name);
VIR_FREE(file);
}
/* The "release" hook cleans up additional resources */
if (virHookPresent(VIR_HOOK_DRIVER_LIBXL)) {
char *xml = virDomainDefFormat(vm->def, cfg->caps, 0);
/* we can't stop the operation even if the script raised an error */
ignore_value(virHookCall(VIR_HOOK_DRIVER_LIBXL, vm->def->name,
VIR_HOOK_LIBXL_OP_RELEASE, VIR_HOOK_SUBOP_END,
NULL, xml, NULL));
VIR_FREE(xml);
}
libxlLoggerCloseFile(cfg->logger, vm->def->id);
virDomainObjRemoveTransientDef(vm);
virObjectUnref(cfg);
}
/*
* Core dump domain to default dump path.
*
* virDomainObjPtr must be locked on invocation
*/
int
libxlDomainAutoCoreDump(libxlDriverPrivatePtr driver,
virDomainObjPtr vm)
{
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
time_t curtime = time(NULL);
char timestr[100];
struct tm time_info;
char *dumpfile = NULL;
int ret = -1;
localtime_r(&curtime, &time_info);
strftime(timestr, sizeof(timestr), "%Y-%m-%d-%H:%M:%S", &time_info);
if (virAsprintf(&dumpfile, "%s/%s-%s",
cfg->autoDumpDir,
vm->def->name,
timestr) < 0)
goto cleanup;
/* Unlock virDomainObj while dumping core */
virObjectUnlock(vm);
libxl_domain_core_dump(cfg->ctx, vm->def->id, dumpfile, NULL);
virObjectLock(vm);
ret = 0;
cleanup:
VIR_FREE(dumpfile);
virObjectUnref(cfg);
return ret;
}
int
libxlDomainSetVcpuAffinities(libxlDriverPrivatePtr driver, virDomainObjPtr vm)
{
libxlDriverConfigPtr cfg = libxlDriverConfigGet(driver);
virDomainVcpuDefPtr vcpu;
libxl_bitmap map;
virBitmapPtr cpumask = NULL;
size_t i;
int ret = -1;
libxl_bitmap_init(&map);
for (i = 0; i < virDomainDefGetVcpus(vm->def); ++i) {
vcpu = virDomainDefGetVcpu(vm->def, i);
if (!vcpu->online)
continue;
if (!(cpumask = vcpu->cpumask))
cpumask = vm->def->cpumask;
if (!cpumask)
continue;
if (virBitmapToData(cpumask, &map.map, (int *)&map.size) < 0)
goto cleanup;
if (libxl_set_vcpuaffinity(cfg->ctx, vm->def->id, i, &map) != 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Failed to pin vcpu '%zu' with libxenlight"), i);
goto cleanup;
}
libxl_bitmap_dispose(&map); /* Also returns to freshly-init'd state */
}
ret = 0;
cleanup:
libxl_bitmap_dispose(&map);
virObjectUnref(cfg);
return ret;
}
static int
libxlDomainFreeMem(libxl_ctx *ctx, libxl_domain_config *d_config)
{
uint32_t needed_mem;
uint32_t free_mem;
int tries = 3;
int wait_secs = 10;
if (libxl_domain_need_memory(ctx, &d_config->b_info, &needed_mem) < 0)
goto error;
do {
if (libxl_get_free_memory(ctx, &free_mem) < 0)
goto error;
if (free_mem >= needed_mem)
return 0;
if (libxl_set_memory_target(ctx, 0, free_mem - needed_mem,
/* relative */ 1, 0) < 0)
goto error;
if (libxl_wait_for_memory_target(ctx, 0, wait_secs) < 0)
goto error;
tries--;
} while (tries > 0);
error:
virReportError(VIR_ERR_OPERATION_FAILED, "%s",
_("Failed to balloon domain0 memory"));
return -1;
}
static int
libxlNetworkPrepareDevices(virDomainDefPtr def)
{
size_t i;
for (i = 0; i < def->nnets; i++) {
virDomainNetDefPtr net = def->nets[i];
int actualType;
/* If appropriate, grab a physical device from the configured
* network's pool of devices, or resolve bridge device name
* to the one defined in the network definition.
*/
if (networkAllocateActualDevice(def, net) < 0)
return -1;
actualType = virDomainNetGetActualType(net);
if (actualType == VIR_DOMAIN_NET_TYPE_HOSTDEV &&
net->type == VIR_DOMAIN_NET_TYPE_NETWORK) {
/* Each type='hostdev' network device must also have a
* corresponding entry in the hostdevs array. For netdevs
* that are hardcoded as type='hostdev', this is already
* done by the parser, but for those allocated from a
* network / determined at runtime, we need to do it
* separately.
*/
virDomainHostdevDefPtr hostdev = virDomainNetGetActualHostdev(net);
virDomainHostdevSubsysPCIPtr pcisrc = &hostdev->source.subsys.u.pci;
if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
pcisrc->backend = VIR_DOMAIN_HOSTDEV_PCI_BACKEND_XEN;
if (virDomainHostdevInsert(def, hostdev) < 0)
return -1;
}
}
return 0;
}
static void
libxlConsoleCallback(libxl_ctx *ctx, libxl_event *ev, void *for_callback)
{
virDomainObjPtr vm = for_callback;
size_t i;
virDomainChrDefPtr chr;
char *console = NULL;
int ret;
virObjectLock(vm);
for (i = 0; i < vm->def->nconsoles; i++) {
chr = vm->def->consoles[i];
if (i == 0 &&
chr->targetType == VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_SERIAL)
chr = vm->def->serials[0];
if (chr->source.type == VIR_DOMAIN_CHR_TYPE_PTY) {
libxl_console_type console_type;
console_type =
(chr->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_SERIAL ?
LIBXL_CONSOLE_TYPE_SERIAL : LIBXL_CONSOLE_TYPE_PV);
ret = libxl_console_get_tty(ctx, ev->domid,
chr->target.port, console_type,
&console);