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SetVcpus and DomainGetMaxVcpus for QEmu

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*  src/qemu_conf.c src/qemu_conf.h src/qemu_driver.c: another patch
   from Cole Robinson adding SetVcpus and DomainGetMaxVcpus for QEmu
Daniel
This commit is contained in:
Daniel Veillard 2008-05-07 16:16:44 +00:00
parent 0feb4c9552
commit da6316f20e
4 changed files with 100 additions and 22 deletions
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5
ChangeLog
View File

@ -1,3 +1,8 @@
Wed May 7 18:12:11 CEST 2008 Daniel Veillard <veillard@redhat.com>
* src/qemu_conf.c src/qemu_conf.h src/qemu_driver.c: another patch
from Cole Robinson adding SetVcpus and DomainGetMaxVcpus for QEmu
Wed May 7 16:42:59 CEST 2008 Daniel Veillard <veillard@redhat.com>
* tests/qemuxml2argvdata/qemuxml2argv-sound.args

37
src/qemu_conf.c
View File

@ -554,6 +554,21 @@ int qemudExtractVersion(virConnectPtr conn,
return 0;
}
/* Converts def->virtType to applicable string type
* @param type integer virt type
* @return string type on success, NULL on fail
*/
const char * qemudVirtTypeToString(int type) {
switch (type) {
case QEMUD_VIRT_QEMU:
return "qemu";
case QEMUD_VIRT_KQEMU:
return "kqemu";
case QEMUD_VIRT_KVM:
return "kvm";
}
return NULL;
}
/* Parse the XML definition for a disk
* @param disk pre-allocated & zero'd disk record
@ -1751,9 +1766,12 @@ static struct qemud_vm_def *qemudParseXML(virConnectPtr conn,
obj = xmlXPathEval(BAD_CAST "string(/domain/devices/emulator[1])", ctxt);
if ((obj == NULL) || (obj->type != XPATH_STRING) ||
(obj->stringval == NULL) || (obj->stringval[0] == 0)) {
const char *type = (def->virtType == QEMUD_VIRT_QEMU ? "qemu" :
def->virtType == QEMUD_VIRT_KQEMU ? "kqemu":
"kvm");
const char *type = qemudVirtTypeToString(def->virtType);
if (!type) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
"%s", _("unknown virt type"));
goto error;
}
const char *emulator = virCapabilitiesDefaultGuestEmulator(driver->caps,
def->os.type,
def->os.arch,
@ -3607,18 +3625,7 @@ char *qemudGenerateXML(virConnectPtr conn,
const char *type = NULL;
int n;
switch (def->virtType) {
case QEMUD_VIRT_QEMU:
type = "qemu";
break;
case QEMUD_VIRT_KQEMU:
type = "kqemu";
break;
case QEMUD_VIRT_KVM:
type = "kvm";
break;
}
if (!type) {
if (!(type = qemudVirtTypeToString(def->virtType))) {
qemudReportError(conn, NULL, NULL, VIR_ERR_INTERNAL_ERROR,
_("unexpected domain type %d"), def->virtType);
goto cleanup;

1
src/qemu_conf.h
View File

@ -503,6 +503,7 @@ char * qemudGenerateNetworkXML (virConnectPtr conn,
struct qemud_network *network,
struct qemud_network_def *def);
const char *qemudVirtTypeToString (int type);
#endif /* WITH_QEMU */

79
src/qemu_driver.c
View File

@ -113,6 +113,8 @@ static int qemudShutdownNetworkDaemon(virConnectPtr conn,
struct qemud_driver *driver,
struct qemud_network *network);
static int qemudDomainGetMaxVcpus(virDomainPtr dom);
static struct qemud_driver *qemu_driver = NULL;
@ -1563,21 +1565,23 @@ static const char *qemudGetType(virConnectPtr conn ATTRIBUTE_UNUSED) {
return "QEMU";
}
static int qemudGetMaxVCPUs(virConnectPtr conn ATTRIBUTE_UNUSED,
const char *type) {
static int qemudGetMaxVCPUs(virConnectPtr conn, const char *type) {
if (!type)
return 16;
if (!strcmp(type, "qemu"))
if (STRCASEEQ(type, "qemu"))
return 16;
/* XXX future KVM will support SMP. Need to probe
kernel to figure out KVM module version i guess */
if (!strcmp(type, "kvm"))
if (STRCASEEQ(type, "kvm"))
return 1;
if (!strcmp(type, "kqemu"))
if (STRCASEEQ(type, "kqemu"))
return 1;
qemudReportError(conn, NULL, NULL, VIR_ERR_INVALID_ARG,
_("unknown type '%s'"), type);
return -1;
}
@ -2161,6 +2165,67 @@ static int qemudDomainSave(virDomainPtr dom,
}
static int qemudDomainSetVcpus(virDomainPtr dom, unsigned int nvcpus) {
const struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
int max;
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
_("no domain with matching uuid '%s'"), dom->uuid);
return -1;
}
if (qemudIsActiveVM(vm)) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "%s",
_("cannot change vcpu count of an active domain"));
return -1;
}
if ((max = qemudDomainGetMaxVcpus(dom)) < 0) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR, "%s",
_("could not determine max vcpus for the domain"));
return -1;
}
if (nvcpus > max) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_ARG,
_("requested vcpus is greater than max allowable"
" vcpus for the domain: %d > %d"), nvcpus, max);
return -1;
}
vm->def->vcpus = nvcpus;
return 0;
}
static int qemudDomainGetMaxVcpus(virDomainPtr dom) {
struct qemud_driver *driver = (struct qemud_driver *)dom->conn->privateData;
struct qemud_vm *vm = qemudFindVMByUUID(driver, dom->uuid);
const char *type;
int ret;
if (!vm) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INVALID_DOMAIN,
_("no domain with matching uuid '%s'"), dom->uuid);
return -1;
}
if (!(type = qemudVirtTypeToString(vm->def->virtType))) {
qemudReportError(dom->conn, dom, NULL, VIR_ERR_INTERNAL_ERROR,
_("unknown virt type in domain definition '%d'"),
vm->def->virtType);
return -1;
}
if ((ret = qemudGetMaxVCPUs(dom->conn, type)) < 0) {
return -1;
}
return ret;
}
static int qemudDomainRestore(virConnectPtr conn,
const char *path) {
struct qemud_driver *driver = (struct qemud_driver *)conn->privateData;
@ -3081,10 +3146,10 @@ static virDriver qemuDriver = {
qemudDomainSave, /* domainSave */
qemudDomainRestore, /* domainRestore */
NULL, /* domainCoreDump */
NULL, /* domainSetVcpus */
qemudDomainSetVcpus, /* domainSetVcpus */
NULL, /* domainPinVcpu */
NULL, /* domainGetVcpus */
NULL, /* domainGetMaxVcpus */
qemudDomainGetMaxVcpus, /* domainGetMaxVcpus */
qemudDomainDumpXML, /* domainDumpXML */
qemudListDefinedDomains, /* listDomains */
qemudNumDefinedDomains, /* numOfDomains */