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qemu: implement the new flags for setting memory parameters

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* src/qemu/qemu_driver.c: update qemuDomainSetMemoryParameters to
  look at the flag parameter and depending on it save the config
  or the live amount
This commit is contained in:
Hu Tao 2011-05-27 15:47:41 +08:00 committed by Daniel Veillard
parent 7639d1ef31
commit 4b997daaf5
1 changed files with 77 additions and 29 deletions
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62
src/qemu/qemu_driver.c
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@ -4860,20 +4860,20 @@ cleanup:
static int qemuDomainSetMemoryParameters(virDomainPtr dom,
virMemoryParameterPtr params,
int nparams,
unsigned int flags ATTRIBUTE_UNUSED)
unsigned int flags)
{
struct qemud_driver *driver = dom->conn->privateData;
int i;
virDomainDefPtr persistentDef = NULL;
virCgroupPtr group = NULL;
virDomainObjPtr vm = NULL;
int ret = -1;
bool isActive;
virCheckFlags(VIR_DOMAIN_MEMORY_PARAM_LIVE |
VIR_DOMAIN_MEMORY_PARAM_CONFIG, -1);
qemuDriverLock(driver);
if (!qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_MEMORY)) {
qemuReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup memory controller is not mounted"));
goto cleanup;
}
vm = virDomainFindByUUID(&driver->domains, dom->uuid);
@ -4883,17 +4883,44 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
goto cleanup;
}
if (!virDomainObjIsActive(vm)) {
isActive = virDomainObjIsActive(vm);
if (flags == VIR_DOMAIN_MEMORY_PARAM_CURRENT) {
if (isActive)
flags = VIR_DOMAIN_MEMORY_PARAM_LIVE;
else
flags = VIR_DOMAIN_MEMORY_PARAM_CONFIG;
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_LIVE) {
if (!isActive) {
qemuReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("domain is not running"));
goto cleanup;
}
if (!qemuCgroupControllerActive(driver, VIR_CGROUP_CONTROLLER_MEMORY)) {
qemuReportError(VIR_ERR_OPERATION_INVALID,
"%s", _("cgroup memory controller is not mounted"));
goto cleanup;
}
if (virCgroupForDomain(driver->cgroup, vm->def->name, &group, 0) != 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot find cgroup for domain %s"), vm->def->name);
goto cleanup;
}
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_CONFIG) {
if (!vm->persistent) {
qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
_("cannot change persistent config of a transient domain"));
goto cleanup;
}
if (!(persistentDef = virDomainObjGetPersistentDef(driver->caps, vm)))
goto cleanup;
}
ret = 0;
for (i = 0; i < nparams; i++) {
@ -4908,12 +4935,18 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
continue;
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_LIVE) {
rc = virCgroupSetMemoryHardLimit(group, params[i].value.ul);
if (rc != 0) {
virReportSystemError(-rc, "%s",
_("unable to set memory hard_limit tunable"));
ret = -1;
}
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_CONFIG) {
persistentDef->mem.hard_limit = params[i].value.ul;
}
} else if (STREQ(param->field, VIR_DOMAIN_MEMORY_SOFT_LIMIT)) {
int rc;
if (param->type != VIR_DOMAIN_MEMORY_PARAM_ULLONG) {
@ -4923,12 +4956,18 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
continue;
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_LIVE) {
rc = virCgroupSetMemorySoftLimit(group, params[i].value.ul);
if (rc != 0) {
virReportSystemError(-rc, "%s",
_("unable to set memory soft_limit tunable"));
ret = -1;
}
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_CONFIG) {
persistentDef->mem.soft_limit = params[i].value.ul;
}
} else if (STREQ(param->field, VIR_DOMAIN_MEMORY_SWAP_HARD_LIMIT)) {
int rc;
if (param->type != VIR_DOMAIN_MEMORY_PARAM_ULLONG) {
@ -4938,12 +4977,17 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
continue;
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_LIVE) {
rc = virCgroupSetMemSwapHardLimit(group, params[i].value.ul);
if (rc != 0) {
virReportSystemError(-rc, "%s",
_("unable to set swap_hard_limit tunable"));
ret = -1;
}
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_CONFIG) {
persistentDef->mem.swap_hard_limit = params[i].value.ul;
}
} else if (STREQ(param->field, VIR_DOMAIN_MEMORY_MIN_GUARANTEE)) {
qemuReportError(VIR_ERR_INVALID_ARG,
_("Memory tunable `%s' not implemented"), param->field);
@ -4955,6 +4999,10 @@ static int qemuDomainSetMemoryParameters(virDomainPtr dom,
}
}
if (flags & VIR_DOMAIN_MEMORY_PARAM_CONFIG) {
ret = virDomainSaveConfig(driver->configDir, persistentDef);
}
cleanup:
virCgroupFree(&group);
if (vm)