static int
qemuInitCgroup(virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
if (!cfg->privileged)
goto done;
if (!virCgroupAvailable())
goto done;
virCgroupFree(&priv->cgroup);
if (!vm->def->resource) {
virDomainResourceDefPtr res;
if (VIR_ALLOC(res) < 0)
goto cleanup;
if (VIR_STRDUP(res->partition, "/machine") < 0) {
VIR_FREE(res);
goto cleanup;
}
vm->def->resource = res;
}
if (vm->def->resource->partition[0] != '/') {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Resource partition '%s' must start with '/'"),
vm->def->resource->partition);
goto cleanup;
}
if (virCgroupNewMachine(vm->def->name,
"qemu",
cfg->privileged,
vm->def->uuid,
NULL,
vm->pid,
false,
vm->def->resource->partition,
cfg->cgroupControllers,
&priv->cgroup) < 0) {
if (virCgroupNewIgnoreError())
goto done;
goto cleanup;
}
done:
ret = 0;
cleanup:
virObjectUnref(cfg);
return ret;
}
static void virLXCDomainObjPrivateFree(void *data)
{
virLXCDomainObjPrivatePtr priv = data;
virCgroupFree(&priv->cgroup);
VIR_FREE(priv);
}
static void
qemuCgroupEmulatorAllNodesDataFree(qemuCgroupEmulatorAllNodesDataPtr data)
{
if (!data)
return;
virCgroupFree(&data->emulatorCgroup);
VIR_FREE(data->emulatorMemMask);
VIR_FREE(data);
}
int virLXCProcessStop(virLXCDriverPtr driver,
virDomainObjPtr vm,
virDomainShutoffReason reason)
{
virCgroupPtr group = NULL;
int rc;
VIR_DEBUG("Stopping VM name=%s pid=%d reason=%d",
vm->def->name, (int)vm->pid, (int)reason);
if (vm->pid <= 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("Invalid PID %d for container"), vm->pid);
return -1;
}
virSecurityManagerRestoreAllLabel(driver->securityManager,
vm->def, false);
virSecurityManagerReleaseLabel(driver->securityManager, vm->def);
/* Clear out dynamically assigned labels */
if (vm->def->nseclabels &&
vm->def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_DYNAMIC) {
VIR_FREE(vm->def->seclabels[0]->model);
VIR_FREE(vm->def->seclabels[0]->label);
VIR_FREE(vm->def->seclabels[0]->imagelabel);
}
if (virCgroupForDomain(driver->cgroup, vm->def->name, &group, 0) == 0) {
rc = virCgroupKillPainfully(group);
if (rc < 0) {
virReportSystemError(-rc, "%s",
_("Failed to kill container PIDs"));
rc = -1;
goto cleanup;
}
if (rc == 1) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Some container PIDs refused to die"));
rc = -1;
goto cleanup;
}
} else {
/* If cgroup doesn't exist, the VM pids must have already
* died and so we're just cleaning up stale state
*/
}
virLXCProcessCleanup(driver, vm, reason);
rc = 0;
cleanup:
virCgroupFree(&group);
return rc;
}
static int
testCgroupDetectMounts(const void *args)
{
int result = -1;
const char *file = args;
char *mounts = NULL;
char *parsed = NULL;
const char *actual;
virCgroupPtr group = NULL;
virBuffer buf = VIR_BUFFER_INITIALIZER;
size_t i;
if (virAsprintf(&mounts, "%s/vircgroupdata/%s.mounts",
abs_srcdir, file) < 0 ||
virAsprintf(&parsed, "%s/vircgroupdata/%s.parsed",
abs_srcdir, file) < 0 ||
VIR_ALLOC(group) < 0)
goto cleanup;
if (virCgroupDetectMountsFromFile(group, mounts, false) < 0)
goto cleanup;
for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) {
virBufferAsprintf(&buf, "%-12s %s\n",
virCgroupControllerTypeToString(i),
NULLSTR(group->controllers[i].mountPoint));
}
if (virBufferCheckError(&buf) < 0)
goto cleanup;
actual = virBufferCurrentContent(&buf);
if (virtTestCompareToFile(actual, parsed) < 0)
goto cleanup;
result = 0;
cleanup:
VIR_FREE(mounts);
VIR_FREE(parsed);
virCgroupFree(&group);
virBufferFreeAndReset(&buf);
return result;
}
static int virCgroupAppRoot(int privileged,
virCgroupPtr *group,
int create)
{
virCgroupPtr rootgrp = NULL;
int rc;
rc = virCgroupNew("/", &rootgrp);
if (rc != 0)
return rc;
if (privileged) {
rc = virCgroupNew("/libvirt", group);
} else {
char *rootname;
char *username;
username = virGetUserName(getuid());
if (!username) {
rc = -ENOMEM;
goto cleanup;
}
rc = virAsprintf(&rootname, "/libvirt-%s", username);
VIR_FREE(username);
if (rc < 0) {
rc = -ENOMEM;
goto cleanup;
}
rc = virCgroupNew(rootname, group);
VIR_FREE(rootname);
}
if (rc != 0)
goto cleanup;
rc = virCgroupMakeGroup(rootgrp, *group, create, VIR_CGROUP_NONE);
cleanup:
virCgroupFree(&rootgrp);
return rc;
}
int
qemuConnectCgroup(virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
qemuDomainObjPrivatePtr priv = vm->privateData;
int ret = -1;
if (!virQEMUDriverIsPrivileged(driver))
goto done;
if (!virCgroupAvailable())
goto done;
virCgroupFree(&priv->cgroup);
if (virCgroupNewDetectMachine(vm->def->name,
"qemu",
vm->def->id,
virQEMUDriverIsPrivileged(driver),
vm->pid,
cfg->cgroupControllers,
&priv->cgroup) < 0)
goto cleanup;
priv->machineName = virSystemdGetMachineNameByPID(vm->pid);
if (!priv->machineName)
virResetLastError();
qemuRestoreCgroupState(vm);
done:
ret = 0;
cleanup:
virObjectUnref(cfg);
return ret;
}
/**
* virLXCProcessStart:
* @conn: pointer to connection
* @driver: pointer to driver structure
* @vm: pointer to virtual machine structure
* @autoDestroy: mark the domain for auto destruction
* @reason: reason for switching vm to running state
*
* Starts a vm
*
* Returns 0 on success or -1 in case of error
*/
int virLXCProcessStart(virConnectPtr conn,
virLXCDriverPtr driver,
virDomainObjPtr vm,
unsigned int nfiles, int *files,
bool autoDestroy,
virDomainRunningReason reason)
{
int rc = -1, r;
size_t nttyFDs = 0;
int *ttyFDs = NULL;
size_t i;
char *logfile = NULL;
int logfd = -1;
size_t nveths = 0;
char **veths = NULL;
int handshakefds[2] = { -1, -1 };
off_t pos = -1;
char ebuf[1024];
char *timestamp;
virCommandPtr cmd = NULL;
virLXCDomainObjPrivatePtr priv = vm->privateData;
virCapsPtr caps = NULL;
virErrorPtr err = NULL;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
virCgroupPtr selfcgroup;
int status;
if (virCgroupNewSelf(&selfcgroup) < 0)
return -1;
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_CPUACCT)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'cpuacct' cgroups controller mount"));
return -1;
}
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_DEVICES)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'devices' cgroups controller mount"));
return -1;
}
if (!virCgroupHasController(selfcgroup,
VIR_CGROUP_CONTROLLER_MEMORY)) {
virCgroupFree(&selfcgroup);
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to find 'memory' cgroups controller mount"));
return -1;
}
virCgroupFree(&selfcgroup);
if (virFileMakePath(cfg->logDir) < 0) {
virReportSystemError(errno,
_("Cannot create log directory '%s'"),
cfg->logDir);
return -1;
}
if (!vm->def->resource) {
virDomainResourceDefPtr res;
if (VIR_ALLOC(res) < 0)
goto cleanup;
if (VIR_STRDUP(res->partition, "/machine") < 0) {
VIR_FREE(res);
goto cleanup;
}
vm->def->resource = res;
}
if (virAsprintf(&logfile, "%s/%s.log",
cfg->logDir, vm->def->name) < 0)
return -1;
if (!(caps = virLXCDriverGetCapabilities(driver, false)))
goto cleanup;
/* Do this up front, so any part of the startup process can add
* runtime state to vm->def that won't be persisted. This let's us
* report implicit runtime defaults in the XML, like vnc listen/socket
*/
VIR_DEBUG("Setting current domain def as transient");
if (virDomainObjSetDefTransient(caps, driver->xmlopt, vm, true) < 0)
goto cleanup;
/* Run an early hook to set-up missing devices */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_PREPARE, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto cleanup;
}
if (virLXCProcessEnsureRootFS(vm) < 0)
goto cleanup;
/* Must be run before security labelling */
VIR_DEBUG("Preparing host devices");
if (virLXCPrepareHostDevices(driver, vm->def) < 0)
goto cleanup;
/* Here we open all the PTYs we need on the host OS side.
* The LXC controller will open the guest OS side PTYs
* and forward I/O between them.
*/
nttyFDs = vm->def->nconsoles;
if (VIR_ALLOC_N(ttyFDs, nttyFDs) < 0)
goto cleanup;
for (i = 0; i < vm->def->nconsoles; i++)
ttyFDs[i] = -1;
/* If you are using a SecurityDriver with dynamic labelling,
then generate a security label for isolation */
VIR_DEBUG("Generating domain security label (if required)");
if (vm->def->nseclabels &&
vm->def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_DEFAULT)
vm->def->seclabels[0]->type = VIR_DOMAIN_SECLABEL_NONE;
if (virSecurityManagerGenLabel(driver->securityManager, vm->def) < 0) {
virDomainAuditSecurityLabel(vm, false);
goto cleanup;
}
virDomainAuditSecurityLabel(vm, true);
VIR_DEBUG("Setting domain security labels");
if (virSecurityManagerSetAllLabel(driver->securityManager,
vm->def, NULL) < 0)
goto cleanup;
for (i = 0; i < vm->def->nconsoles; i++) {
char *ttyPath;
if (vm->def->consoles[i]->source.type != VIR_DOMAIN_CHR_TYPE_PTY) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Only PTY console types are supported"));
goto cleanup;
}
if (virFileOpenTty(&ttyFDs[i], &ttyPath, 1) < 0) {
virReportSystemError(errno, "%s",
_("Failed to allocate tty"));
goto cleanup;
}
VIR_FREE(vm->def->consoles[i]->source.data.file.path);
vm->def->consoles[i]->source.data.file.path = ttyPath;
VIR_FREE(vm->def->consoles[i]->info.alias);
if (virAsprintf(&vm->def->consoles[i]->info.alias, "console%zu", i) < 0)
goto cleanup;
}
if (virLXCProcessSetupInterfaces(conn, vm->def, &nveths, &veths) < 0)
goto cleanup;
/* Save the configuration for the controller */
if (virDomainSaveConfig(cfg->stateDir, vm->def) < 0)
goto cleanup;
if ((logfd = open(logfile, O_WRONLY | O_APPEND | O_CREAT,
S_IRUSR|S_IWUSR)) < 0) {
virReportSystemError(errno,
_("Failed to open '%s'"),
logfile);
goto cleanup;
}
if (pipe(handshakefds) < 0) {
virReportSystemError(errno, "%s",
_("Unable to create pipe"));
goto cleanup;
}
if (!(cmd = virLXCProcessBuildControllerCmd(driver,
vm,
nveths, veths,
ttyFDs, nttyFDs,
files, nfiles,
handshakefds[1])))
goto cleanup;
virCommandSetOutputFD(cmd, &logfd);
virCommandSetErrorFD(cmd, &logfd);
/* now that we know it is about to start call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_START, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto cleanup;
}
/* Log timestamp */
if ((timestamp = virTimeStringNow()) == NULL)
goto cleanup;
if (safewrite(logfd, timestamp, strlen(timestamp)) < 0 ||
safewrite(logfd, START_POSTFIX, strlen(START_POSTFIX)) < 0) {
VIR_WARN("Unable to write timestamp to logfile: %s",
virStrerror(errno, ebuf, sizeof(ebuf)));
}
VIR_FREE(timestamp);
/* Log generated command line */
virCommandWriteArgLog(cmd, logfd);
if ((pos = lseek(logfd, 0, SEEK_END)) < 0)
VIR_WARN("Unable to seek to end of logfile: %s",
virStrerror(errno, ebuf, sizeof(ebuf)));
virCommandRawStatus(cmd);
if (virCommandRun(cmd, &status) < 0)
goto cleanup;
if (status != 0) {
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf,
sizeof(ebuf)) <= 0) {
if (WIFEXITED(status))
snprintf(ebuf, sizeof(ebuf), _("unexpected exit status %d"),
WEXITSTATUS(status));
else
snprintf(ebuf, sizeof(ebuf), "%s", _("terminated abnormally"));
}
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
goto cleanup;
}
if (VIR_CLOSE(handshakefds[1]) < 0) {
virReportSystemError(errno, "%s", _("could not close handshake fd"));
goto cleanup;
}
/* Connect to the controller as a client *first* because
* this will block until the child has written their
* pid file out to disk & created their cgroup */
if (!(priv->monitor = virLXCProcessConnectMonitor(driver, vm))) {
/* Intentionally overwrite the real monitor error message,
* since a better one is almost always found in the logs
*/
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf, sizeof(ebuf)) > 0) {
virResetLastError();
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
}
goto cleanup;
}
/* And get its pid */
if ((r = virPidFileRead(cfg->stateDir, vm->def->name, &vm->pid)) < 0) {
if (virLXCProcessReadLogOutput(vm, logfile, pos, ebuf, sizeof(ebuf)) > 0)
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), ebuf);
else
virReportSystemError(-r,
_("Failed to read pid file %s/%s.pid"),
cfg->stateDir, vm->def->name);
goto cleanup;
}
if (virCgroupNewDetectMachine(vm->def->name, "lxc", vm->pid,
vm->def->resource ?
vm->def->resource->partition :
NULL,
-1, &priv->cgroup) < 0)
goto error;
if (!priv->cgroup) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("No valid cgroup for machine %s"),
vm->def->name);
goto error;
}
priv->stopReason = VIR_DOMAIN_EVENT_STOPPED_FAILED;
priv->wantReboot = false;
vm->def->id = vm->pid;
virDomainObjSetState(vm, VIR_DOMAIN_RUNNING, reason);
priv->doneStopEvent = false;
if (virAtomicIntInc(&driver->nactive) == 1 && driver->inhibitCallback)
driver->inhibitCallback(true, driver->inhibitOpaque);
if (lxcContainerWaitForContinue(handshakefds[0]) < 0) {
char out[1024];
if (!(virLXCProcessReadLogOutput(vm, logfile, pos, out, 1024) < 0)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("guest failed to start: %s"), out);
}
goto error;
}
if (autoDestroy &&
virCloseCallbacksSet(driver->closeCallbacks, vm,
conn, lxcProcessAutoDestroy) < 0)
goto error;
if (virDomainObjSetDefTransient(caps, driver->xmlopt,
vm, false) < 0)
goto error;
/* Write domain status to disk.
*
* XXX: Earlier we wrote the plain "live" domain XML to this
* location for the benefit of libvirt_lxc. We're now overwriting
* it with the live status XML instead. This is a (currently
* harmless) inconsistency we should fix one day */
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0)
goto error;
/* finally we can call the 'started' hook script if any */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
int hookret;
hookret = virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_STARTED, VIR_HOOK_SUBOP_BEGIN,
NULL, xml, NULL);
VIR_FREE(xml);
/*
* If the script raised an error abort the launch
*/
if (hookret < 0)
goto error;
}
rc = 0;
cleanup:
if (rc != 0 && !err)
err = virSaveLastError();
virCommandFree(cmd);
if (VIR_CLOSE(logfd) < 0) {
virReportSystemError(errno, "%s", _("could not close logfile"));
rc = -1;
}
for (i = 0; i < nveths; i++) {
if (rc != 0 && veths[i])
ignore_value(virNetDevVethDelete(veths[i]));
VIR_FREE(veths[i]);
}
if (rc != 0) {
if (vm->newDef) {
virDomainDefFree(vm->newDef);
vm->newDef = NULL;
}
if (priv->monitor) {
virObjectUnref(priv->monitor);
priv->monitor = NULL;
}
virDomainConfVMNWFilterTeardown(vm);
virSecurityManagerRestoreAllLabel(driver->securityManager,
vm->def, false);
virSecurityManagerReleaseLabel(driver->securityManager, vm->def);
/* Clear out dynamically assigned labels */
if (vm->def->nseclabels &&
vm->def->seclabels[0]->type == VIR_DOMAIN_SECLABEL_DYNAMIC) {
VIR_FREE(vm->def->seclabels[0]->model);
VIR_FREE(vm->def->seclabels[0]->label);
VIR_FREE(vm->def->seclabels[0]->imagelabel);
}
}
for (i = 0; i < nttyFDs; i++)
VIR_FORCE_CLOSE(ttyFDs[i]);
VIR_FREE(ttyFDs);
VIR_FORCE_CLOSE(handshakefds[0]);
VIR_FORCE_CLOSE(handshakefds[1]);
VIR_FREE(logfile);
virObjectUnref(cfg);
virObjectUnref(caps);
if (err) {
virSetError(err);
virFreeError(err);
}
return rc;
error:
err = virSaveLastError();
virLXCProcessStop(driver, vm, VIR_DOMAIN_SHUTOFF_FAILED);
goto cleanup;
}
/**
* lxcSetContainerResources
* @def: pointer to virtual machine structure
*
* Creates a cgroup for the container, moves the task inside,
* and sets resource limits
*
* Returns 0 on success or -1 in case of error
*/
static int lxcSetContainerResources(virDomainDefPtr def)
{
virCgroupPtr driver;
virCgroupPtr cgroup;
int rc = -1;
int i;
struct cgroup_device_policy devices[] = {
{'c', LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_NULL},
{'c', LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_ZERO},
{'c', LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_FULL},
{'c', LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_RANDOM},
{'c', LXC_DEV_MAJ_MEMORY, LXC_DEV_MIN_URANDOM},
{'c', LXC_DEV_MAJ_TTY, LXC_DEV_MIN_TTY},
{'c', LXC_DEV_MAJ_TTY, LXC_DEV_MIN_PTMX},
{0, 0, 0}};
rc = virCgroupForDriver("lxc", &driver, 1, 0);
if (rc != 0) {
/* Skip all if no driver cgroup is configured */
if (rc == -ENXIO || rc == -ENOENT)
return 0;
virReportSystemError(-rc, "%s",
_("Unable to get cgroup for driver"));
return rc;
}
rc = virCgroupForDomain(driver, def->name, &cgroup, 1);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to create cgroup for domain %s"),
def->name);
goto cleanup;
}
if (def->blkio.weight) {
rc = virCgroupSetBlkioWeight(cgroup, def->blkio.weight);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set Blkio weight for domain %s"),
def->name);
goto cleanup;
}
}
if (def->cputune.shares) {
rc = virCgroupSetCpuShares(cgroup, def->cputune.shares);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set cpu shares for domain %s"),
def->name);
goto cleanup;
}
}
rc = virCgroupSetMemory(cgroup, def->mem.max_balloon);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set memory limit for domain %s"),
def->name);
goto cleanup;
}
if (def->mem.hard_limit) {
rc = virCgroupSetMemoryHardLimit(cgroup, def->mem.hard_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set memory hard limit for domain %s"),
def->name);
goto cleanup;
}
}
if (def->mem.soft_limit) {
rc = virCgroupSetMemorySoftLimit(cgroup, def->mem.soft_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set memory soft limit for domain %s"),
def->name);
goto cleanup;
}
}
if (def->mem.swap_hard_limit) {
rc = virCgroupSetMemSwapHardLimit(cgroup, def->mem.swap_hard_limit);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to set swap hard limit for domain %s"),
def->name);
goto cleanup;
}
}
rc = virCgroupDenyAllDevices(cgroup);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to deny devices for domain %s"),
def->name);
goto cleanup;
}
for (i = 0; devices[i].type != 0; i++) {
struct cgroup_device_policy *dev = &devices[i];
rc = virCgroupAllowDevice(cgroup,
dev->type,
dev->major,
dev->minor,
VIR_CGROUP_DEVICE_RWM);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to allow device %c:%d:%d for domain %s"),
dev->type, dev->major, dev->minor, def->name);
goto cleanup;
}
}
rc = virCgroupAllowDeviceMajor(cgroup, 'c', LXC_DEV_MAJ_PTY,
VIR_CGROUP_DEVICE_RWM);
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to allow PYT devices for domain %s"),
def->name);
goto cleanup;
}
rc = virCgroupAddTask(cgroup, getpid());
if (rc != 0) {
virReportSystemError(-rc,
_("Unable to add task %d to cgroup for domain %s"),
getpid(), def->name);
}
cleanup:
virCgroupFree(&driver);
virCgroupFree(&cgroup);
return rc;
}
int
qemuSetupCgroupForVcpu(virDomainObjPtr vm)
{
virCgroupPtr cgroup_vcpu = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDefPtr def = vm->def;
size_t i, j;
unsigned long long period = vm->def->cputune.period;
long long quota = vm->def->cputune.quota;
char *mem_mask = NULL;
virDomainNumatuneMemMode mem_mode;
if ((period || quota) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("cgroup cpu is required for scheduler tuning"));
return -1;
}
/*
* If CPU cgroup controller is not initialized here, then we need
* neither period nor quota settings. And if CPUSET controller is
* not initialized either, then there's nothing to do anyway.
*/
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET))
return 0;
/* We are trying to setup cgroups for CPU pinning, which can also be done
* with virProcessSetAffinity, thus the lack of cgroups is not fatal here.
*/
if (priv->cgroup == NULL)
return 0;
if (priv->nvcpupids == 0 || priv->vcpupids[0] == vm->pid) {
/* If we don't know VCPU<->PID mapping or all vcpu runs in the same
* thread, we cannot control each vcpu.
*/
return 0;
}
if (virDomainNumatuneGetMode(vm->def->numa, -1, &mem_mode) == 0 &&
mem_mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT &&
virDomainNumatuneMaybeFormatNodeset(vm->def->numa,
priv->autoNodeset,
&mem_mask, -1) < 0)
goto cleanup;
for (i = 0; i < priv->nvcpupids; i++) {
virCgroupFree(&cgroup_vcpu);
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, i,
true, &cgroup_vcpu) < 0)
goto cleanup;
/* move the thread for vcpu to sub dir */
if (virCgroupAddTask(cgroup_vcpu, priv->vcpupids[i]) < 0)
goto cleanup;
if (period || quota) {
if (qemuSetupCgroupVcpuBW(cgroup_vcpu, period, quota) < 0)
goto cleanup;
}
/* Set vcpupin in cgroup if vcpupin xml is provided */
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
virBitmapPtr cpumap = NULL;
if (mem_mask &&
virCgroupSetCpusetMems(cgroup_vcpu, mem_mask) < 0)
goto cleanup;
/* try to use the default cpu maps */
if (vm->def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
cpumap = priv->autoCpuset;
else
cpumap = vm->def->cpumask;
/* lookup a more specific pinning info */
for (j = 0; j < def->cputune.nvcpupin; j++) {
if (def->cputune.vcpupin[j]->id == i) {
cpumap = def->cputune.vcpupin[j]->cpumask;
break;
}
}
if (!cpumap)
continue;
if (qemuSetupCgroupCpusetCpus(cgroup_vcpu, cpumap) < 0)
goto cleanup;
}
}
virCgroupFree(&cgroup_vcpu);
VIR_FREE(mem_mask);
return 0;
cleanup:
if (cgroup_vcpu) {
virCgroupRemove(cgroup_vcpu);
virCgroupFree(&cgroup_vcpu);
}
VIR_FREE(mem_mask);
return -1;
}
static void
qemuRestoreCgroupState(virDomainObjPtr vm)
{
char *mem_mask = NULL;
char *nodeset = NULL;
int empty = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
size_t i = 0;
virBitmapPtr all_nodes;
virCgroupPtr cgroup_temp = NULL;
if (!(all_nodes = virNumaGetHostNodeset()))
goto error;
if (!(mem_mask = virBitmapFormat(all_nodes)))
goto error;
if ((empty = virCgroupHasEmptyTasks(priv->cgroup,
VIR_CGROUP_CONTROLLER_CPUSET)) <= 0)
goto error;
if (virCgroupSetCpusetMems(priv->cgroup, mem_mask) < 0)
goto error;
for (i = 0; i < priv->nvcpupids; i++) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_VCPU, i,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMemoryMigrate(cgroup_temp, true) < 0 ||
virCgroupGetCpusetMems(cgroup_temp, &nodeset) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset) < 0)
goto cleanup;
VIR_FREE(nodeset);
virCgroupFree(&cgroup_temp);
}
for (i = 0; i < vm->def->niothreadids; i++) {
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
vm->def->iothreadids[i]->iothread_id,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMemoryMigrate(cgroup_temp, true) < 0 ||
virCgroupGetCpusetMems(cgroup_temp, &nodeset) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset) < 0)
goto cleanup;
VIR_FREE(nodeset);
virCgroupFree(&cgroup_temp);
}
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
false, &cgroup_temp) < 0 ||
virCgroupSetCpusetMemoryMigrate(cgroup_temp, true) < 0 ||
virCgroupGetCpusetMems(cgroup_temp, &nodeset) < 0 ||
virCgroupSetCpusetMems(cgroup_temp, nodeset) < 0)
goto cleanup;
cleanup:
VIR_FREE(mem_mask);
VIR_FREE(nodeset);
virBitmapFree(all_nodes);
virCgroupFree(&cgroup_temp);
return;
error:
virResetLastError();
VIR_DEBUG("Couldn't restore cgroups to meaningful state");
goto cleanup;
}
int
qemuSetupCgroupForEmulator(virDomainObjPtr vm)
{
virBitmapPtr cpumask = NULL;
virCgroupPtr cgroup_emulator = NULL;
virDomainDefPtr def = vm->def;
qemuDomainObjPrivatePtr priv = vm->privateData;
unsigned long long period = vm->def->cputune.emulator_period;
long long quota = vm->def->cputune.emulator_quota;
if ((period || quota) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("cgroup cpu is required for scheduler tuning"));
return -1;
}
/*
* If CPU cgroup controller is not initialized here, then we need
* neither period nor quota settings. And if CPUSET controller is
* not initialized either, then there's nothing to do anyway.
*/
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET))
return 0;
if (priv->cgroup == NULL)
return 0; /* Not supported, so claim success */
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_EMULATOR, 0,
true, &cgroup_emulator) < 0)
goto cleanup;
if (virCgroupMoveTask(priv->cgroup, cgroup_emulator) < 0)
goto cleanup;
if (def->cputune.emulatorpin)
cpumask = def->cputune.emulatorpin;
else if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
cpumask = priv->autoCpuset;
else if (def->cpumask)
cpumask = def->cpumask;
if (cpumask) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET) &&
qemuSetupCgroupCpusetCpus(cgroup_emulator, cpumask) < 0)
goto cleanup;
}
if (period || quota) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU) &&
qemuSetupCgroupVcpuBW(cgroup_emulator, period,
quota) < 0)
goto cleanup;
}
virCgroupFree(&cgroup_emulator);
return 0;
cleanup:
if (cgroup_emulator) {
virCgroupRemove(cgroup_emulator);
virCgroupFree(&cgroup_emulator);
}
return -1;
}
static int
qemuInitCgroup(virQEMUDriverPtr driver,
virDomainObjPtr vm,
size_t nnicindexes,
int *nicindexes)
{
int ret = -1;
qemuDomainObjPrivatePtr priv = vm->privateData;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
if (!virQEMUDriverIsPrivileged(driver))
goto done;
if (!virCgroupAvailable())
goto done;
virCgroupFree(&priv->cgroup);
if (!vm->def->resource) {
virDomainResourceDefPtr res;
if (VIR_ALLOC(res) < 0)
goto cleanup;
if (VIR_STRDUP(res->partition, "/machine") < 0) {
VIR_FREE(res);
goto cleanup;
}
vm->def->resource = res;
}
if (vm->def->resource->partition[0] != '/') {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("Resource partition '%s' must start with '/'"),
vm->def->resource->partition);
goto cleanup;
}
/*
* We need to do this because of systemd-machined, because
* CreateMachine requires the name to be a valid hostname.
*/
priv->machineName = virSystemdMakeMachineName("qemu",
vm->def->id,
vm->def->name,
virQEMUDriverIsPrivileged(driver));
if (!priv->machineName)
goto cleanup;
if (virCgroupNewMachine(priv->machineName,
"qemu",
vm->def->uuid,
NULL,
vm->pid,
false,
nnicindexes, nicindexes,
vm->def->resource->partition,
cfg->cgroupControllers,
&priv->cgroup) < 0) {
if (virCgroupNewIgnoreError())
goto done;
goto cleanup;
}
done:
ret = 0;
cleanup:
virObjectUnref(cfg);
return ret;
}
int
qemuSetupCgroupForEmulator(virQEMUDriverPtr driver,
virDomainObjPtr vm,
virBitmapPtr nodemask)
{
virBitmapPtr cpumask = NULL;
virBitmapPtr cpumap = NULL;
virCgroupPtr cgroup_emulator = NULL;
virDomainDefPtr def = vm->def;
qemuDomainObjPrivatePtr priv = vm->privateData;
unsigned long long period = vm->def->cputune.emulator_period;
long long quota = vm->def->cputune.emulator_quota;
if ((period || quota) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("cgroup cpu is required for scheduler tuning"));
return -1;
}
if (priv->cgroup == NULL)
return 0; /* Not supported, so claim success */
if (virCgroupNewEmulator(priv->cgroup, true, &cgroup_emulator) < 0)
goto cleanup;
if (virCgroupMoveTask(priv->cgroup, cgroup_emulator) < 0)
goto cleanup;
if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO) {
if (!(cpumap = qemuPrepareCpumap(driver, nodemask)))
goto cleanup;
cpumask = cpumap;
} else if (def->cputune.emulatorpin) {
cpumask = def->cputune.emulatorpin->cpumask;
} else if (def->cpumask) {
cpumask = def->cpumask;
}
if (cpumask) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET) &&
qemuSetupCgroupEmulatorPin(cgroup_emulator, cpumask) < 0)
goto cleanup;
}
if (period || quota) {
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU) &&
qemuSetupCgroupVcpuBW(cgroup_emulator, period,
quota) < 0)
goto cleanup;
}
virCgroupFree(&cgroup_emulator);
virBitmapFree(cpumap);
return 0;
cleanup:
virBitmapFree(cpumap);
if (cgroup_emulator) {
virCgroupRemove(cgroup_emulator);
virCgroupFree(&cgroup_emulator);
}
return -1;
}
int
qemuSetupCgroupForVcpu(virDomainObjPtr vm)
{
virCgroupPtr cgroup_vcpu = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDefPtr def = vm->def;
size_t i, j;
unsigned long long period = vm->def->cputune.period;
long long quota = vm->def->cputune.quota;
if ((period || quota) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("cgroup cpu is required for scheduler tuning"));
return -1;
}
/* We are trying to setup cgroups for CPU pinning, which can also be done
* with virProcessInfoSetAffinity, thus the lack of cgroups is not fatal
* here.
*/
if (priv->cgroup == NULL)
return 0;
if (priv->nvcpupids == 0 || priv->vcpupids[0] == vm->pid) {
/* If we don't know VCPU<->PID mapping or all vcpu runs in the same
* thread, we cannot control each vcpu.
*/
VIR_WARN("Unable to get vcpus' pids.");
return 0;
}
for (i = 0; i < priv->nvcpupids; i++) {
if (virCgroupNewVcpu(priv->cgroup, i, true, &cgroup_vcpu) < 0)
goto cleanup;
/* move the thread for vcpu to sub dir */
if (virCgroupAddTask(cgroup_vcpu, priv->vcpupids[i]) < 0)
goto cleanup;
if (period || quota) {
if (qemuSetupCgroupVcpuBW(cgroup_vcpu, period, quota) < 0)
goto cleanup;
}
/* Set vcpupin in cgroup if vcpupin xml is provided */
if (virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET)) {
/* find the right CPU to pin, otherwise
* qemuSetupCgroupVcpuPin will fail. */
for (j = 0; j < def->cputune.nvcpupin; j++) {
if (def->cputune.vcpupin[j]->vcpuid != i)
continue;
if (qemuSetupCgroupVcpuPin(cgroup_vcpu,
def->cputune.vcpupin,
def->cputune.nvcpupin,
i) < 0)
goto cleanup;
break;
}
}
virCgroupFree(&cgroup_vcpu);
}
return 0;
cleanup:
if (cgroup_vcpu) {
virCgroupRemove(cgroup_vcpu);
virCgroupFree(&cgroup_vcpu);
}
return -1;
}
/**
* virLXCProcessCleanup:
* @driver: pointer to driver structure
* @vm: pointer to VM to clean up
* @reason: reason for switching the VM to shutoff state
*
* Cleanout resources associated with the now dead VM
*
*/
static void virLXCProcessCleanup(virLXCDriverPtr driver,
virDomainObjPtr vm,
virDomainShutoffReason reason)
{
size_t i;
virLXCDomainObjPrivatePtr priv = vm->privateData;
virNetDevVPortProfilePtr vport = NULL;
virLXCDriverConfigPtr cfg = virLXCDriverGetConfig(driver);
VIR_DEBUG("Stopping VM name=%s pid=%d reason=%d",
vm->def->name, (int)vm->pid, (int)reason);
/* now that we know it's stopped call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
/* we can't stop the operation even if the script raised an error */
virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_STOPPED, VIR_HOOK_SUBOP_END,
NULL, xml, NULL);
VIR_FREE(xml);
}
/* Stop autodestroy in case guest is restarted */
virCloseCallbacksUnset(driver->closeCallbacks, vm,
lxcProcessAutoDestroy);
if (priv->monitor) {
virLXCMonitorClose(priv->monitor);
virObjectUnref(priv->monitor);
priv->monitor = NULL;
}
virPidFileDelete(cfg->stateDir, vm->def->name);
virDomainDeleteConfig(cfg->stateDir, NULL, vm);
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, reason);
vm->pid = -1;
vm->def->id = -1;
if (virAtomicIntDecAndTest(&driver->nactive) && driver->inhibitCallback)
driver->inhibitCallback(false, driver->inhibitOpaque);
virLXCDomainReAttachHostDevices(driver, vm->def);
for (i = 0; i < vm->def->nnets; i++) {
virDomainNetDefPtr iface = vm->def->nets[i];
vport = virDomainNetGetActualVirtPortProfile(iface);
if (iface->ifname) {
if (vport &&
vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
ignore_value(virNetDevOpenvswitchRemovePort(
virDomainNetGetActualBridgeName(iface),
iface->ifname));
ignore_value(virNetDevVethDelete(iface->ifname));
}
networkReleaseActualDevice(vm->def, iface);
}
virDomainConfVMNWFilterTeardown(vm);
if (priv->cgroup) {
virCgroupRemove(priv->cgroup);
virCgroupFree(&priv->cgroup);
}
/* Get machined to terminate the machine as it may not have cleaned it
* properly. See https://bugs.freedesktop.org/show_bug.cgi?id=68370 for
* the bug we are working around here.
*/
virSystemdTerminateMachine(vm->def->name, "lxc", true);
/* The "release" hook cleans up additional resources */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
/* we can't stop the operation even if the script raised an error */
virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_RELEASE, VIR_HOOK_SUBOP_END,
NULL, xml, NULL);
VIR_FREE(xml);
}
if (vm->newDef) {
virDomainDefFree(vm->def);
vm->def = vm->newDef;
vm->def->id = -1;
vm->newDef = NULL;
}
virObjectUnref(cfg);
}
int
qemuSetupCgroupForIOThreads(virDomainObjPtr vm)
{
virCgroupPtr cgroup_iothread = NULL;
qemuDomainObjPrivatePtr priv = vm->privateData;
virDomainDefPtr def = vm->def;
size_t i;
unsigned long long period = vm->def->cputune.period;
long long quota = vm->def->cputune.quota;
char *mem_mask = NULL;
virDomainNumatuneMemMode mem_mode;
if ((period || quota) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU)) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("cgroup cpu is required for scheduler tuning"));
return -1;
}
/*
* If CPU cgroup controller is not initialized here, then we need
* neither period nor quota settings. And if CPUSET controller is
* not initialized either, then there's nothing to do anyway.
*/
if (!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPU) &&
!virCgroupHasController(priv->cgroup, VIR_CGROUP_CONTROLLER_CPUSET))
return 0;
/* We are trying to setup cgroups for CPU pinning, which can also be done
* with virProcessSetAffinity, thus the lack of cgroups is not fatal here.
*/
if (priv->cgroup == NULL)
return 0;
if (virDomainNumatuneGetMode(vm->def->numa, -1, &mem_mode) == 0 &&
mem_mode == VIR_DOMAIN_NUMATUNE_MEM_STRICT &&
virDomainNumatuneMaybeFormatNodeset(vm->def->numa,
priv->autoNodeset,
&mem_mask, -1) < 0)
goto cleanup;
for (i = 0; i < def->niothreadids; i++) {
/* IOThreads are numbered 1..n, although the array is 0..n-1,
* so we will account for that here
*/
if (virCgroupNewThread(priv->cgroup, VIR_CGROUP_THREAD_IOTHREAD,
def->iothreadids[i]->iothread_id,
true, &cgroup_iothread) < 0)
goto cleanup;
/* move the thread for iothread to sub dir */
if (virCgroupAddTask(cgroup_iothread,
def->iothreadids[i]->thread_id) < 0)
goto cleanup;
if (period || quota) {
if (qemuSetupCgroupVcpuBW(cgroup_iothread, period, quota) < 0)
goto cleanup;
}
/* Set iothreadpin in cgroup if iothreadpin xml is provided */
if (virCgroupHasController(priv->cgroup,
VIR_CGROUP_CONTROLLER_CPUSET)) {
virBitmapPtr cpumask = NULL;
if (mem_mask &&
virCgroupSetCpusetMems(cgroup_iothread, mem_mask) < 0)
goto cleanup;
if (def->iothreadids[i]->cpumask)
cpumask = def->iothreadids[i]->cpumask;
else if (def->placement_mode == VIR_DOMAIN_CPU_PLACEMENT_MODE_AUTO)
cpumask = priv->autoCpuset;
else
cpumask = def->cpumask;
if (cpumask &&
qemuSetupCgroupCpusetCpus(cgroup_iothread, cpumask) < 0)
goto cleanup;
}
virCgroupFree(&cgroup_iothread);
}
VIR_FREE(mem_mask);
return 0;
cleanup:
if (cgroup_iothread) {
virCgroupRemove(cgroup_iothread);
virCgroupFree(&cgroup_iothread);
}
VIR_FREE(mem_mask);
return -1;
}
/**
* virLXCProcessCleanup:
* @driver: pointer to driver structure
* @vm: pointer to VM to clean up
* @reason: reason for switching the VM to shutoff state
*
* Cleanout resources associated with the now dead VM
*
*/
static void virLXCProcessCleanup(virLXCDriverPtr driver,
virDomainObjPtr vm,
virDomainShutoffReason reason)
{
virCgroupPtr cgroup;
int i;
virLXCDomainObjPrivatePtr priv = vm->privateData;
virNetDevVPortProfilePtr vport = NULL;
VIR_DEBUG("Stopping VM name=%s pid=%d reason=%d",
vm->def->name, (int)vm->pid, (int)reason);
/* now that we know it's stopped call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
/* we can't stop the operation even if the script raised an error */
virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_STOPPED, VIR_HOOK_SUBOP_END,
NULL, xml, NULL);
VIR_FREE(xml);
}
/* Stop autodestroy in case guest is restarted */
virLXCProcessAutoDestroyRemove(driver, vm);
if (priv->monitor) {
virLXCMonitorClose(priv->monitor);
virObjectUnref(priv->monitor);
priv->monitor = NULL;
}
virPidFileDelete(driver->stateDir, vm->def->name);
virDomainDeleteConfig(driver->stateDir, NULL, vm);
virDomainObjSetState(vm, VIR_DOMAIN_SHUTOFF, reason);
vm->pid = -1;
vm->def->id = -1;
driver->nactive--;
if (!driver->nactive && driver->inhibitCallback)
driver->inhibitCallback(false, driver->inhibitOpaque);
virLXCDomainReAttachHostDevices(driver, vm->def);
for (i = 0 ; i < vm->def->nnets ; i++) {
virDomainNetDefPtr iface = vm->def->nets[i];
vport = virDomainNetGetActualVirtPortProfile(iface);
if (iface->ifname) {
ignore_value(virNetDevSetOnline(iface->ifname, false));
if (vport &&
vport->virtPortType == VIR_NETDEV_VPORT_PROFILE_OPENVSWITCH)
ignore_value(virNetDevOpenvswitchRemovePort(
virDomainNetGetActualBridgeName(iface),
iface->ifname));
ignore_value(virNetDevVethDelete(iface->ifname));
}
networkReleaseActualDevice(iface);
}
virDomainConfVMNWFilterTeardown(vm);
if (driver->cgroup &&
virCgroupForDomain(driver->cgroup, vm->def->name, &cgroup, 0) == 0) {
virCgroupRemove(cgroup);
virCgroupFree(&cgroup);
}
/* now that we know it's stopped call the hook if present */
if (virHookPresent(VIR_HOOK_DRIVER_LXC)) {
char *xml = virDomainDefFormat(vm->def, 0);
/* we can't stop the operation even if the script raised an error */
virHookCall(VIR_HOOK_DRIVER_LXC, vm->def->name,
VIR_HOOK_LXC_OP_RELEASE, VIR_HOOK_SUBOP_END,
NULL, xml, NULL);
VIR_FREE(xml);
}
if (vm->newDef) {
virDomainDefFree(vm->def);
vm->def = vm->newDef;
vm->def->id = -1;
vm->newDef = NULL;
}
}
