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;
}
int virLXCCgroupSetup(virDomainDefPtr def)
{
virCgroupPtr driver = NULL;
virCgroupPtr cgroup = NULL;
int rc = -1;
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 (virLXCCgroupSetupCpuTune(def, cgroup) < 0)
goto cleanup;
if (virLXCCgroupSetupBlkioTune(def, cgroup) < 0)
goto cleanup;
if (virLXCCgroupSetupMemTune(def, cgroup) < 0)
goto cleanup;
if (virLXCCgroupSetupDeviceACL(def, cgroup) < 0)
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(&cgroup);
virCgroupFree(&driver);
return rc;
}
/**
* 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;
}
/**
* 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;
}
}
