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qemu: setvcpus: Simplify altering the persistent config
Do this by adding a helper function to get the persistent domain config. This should be useful for other functions that may eventually want to alter the persistent domain config (attach/detach device). Also make similar changes to the test drivers setvcpus command. A caveat is that the function will return the running config for a transient domain, rather than error. This simplifies callers, as long as they use other methods to ensure the guest is persistent.
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@ -1007,6 +1007,27 @@ out:
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return ret;
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}
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/*
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* Return the persistent domain configuration. If domain is transient,
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* return the running config.
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*
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* @param caps pointer to capabilities info
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* @param domain domain object pointer
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* @return NULL on error, virDOmainDefPtr on success
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*/
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virDomainDefPtr
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virDomainObjGetPersistentDef(virCapsPtr caps,
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virDomainObjPtr domain)
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{
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if (virDomainObjSetDefTransient(caps, domain) < 0)
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return NULL;
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if (domain->newDef)
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return domain->newDef;
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else
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return domain->def;
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}
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/*
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* The caller must hold a lock on the driver owning 'doms',
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* and must also have locked 'dom', to ensure no one else
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@ -1094,6 +1094,9 @@ void virDomainObjAssignDef(virDomainObjPtr domain,
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bool live);
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int virDomainObjSetDefTransient(virCapsPtr caps,
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virDomainObjPtr domain);
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virDomainDefPtr
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virDomainObjGetPersistentDef(virCapsPtr caps,
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virDomainObjPtr domain);
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void virDomainRemoveInactive(virDomainObjListPtr doms,
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virDomainObjPtr dom);
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@ -226,6 +226,7 @@ virDomainNetDefFree;
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virDomainNetTypeToString;
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virDomainObjAssignDef;
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virDomainObjSetDefTransient;
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virDomainObjGetPersistentDef;
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virDomainObjIsDuplicate;
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virDomainObjListDeinit;
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virDomainObjListGetActiveIDs;
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@ -6264,7 +6264,7 @@ qemudDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
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{
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struct qemud_driver *driver = dom->conn->privateData;
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virDomainObjPtr vm;
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virDomainDefPtr def;
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virDomainDefPtr persistentDef;
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const char * type;
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int max;
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int ret = -1;
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@ -6309,6 +6309,12 @@ qemudDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
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goto endjob;
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}
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if (!vm->persistent && (flags & VIR_DOMAIN_VCPU_CONFIG)) {
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qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
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_("cannot change persistent config of a transient domain"));
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goto endjob;
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}
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if (!(type = virDomainVirtTypeToString(vm->def->virtType))) {
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qemuReportError(VIR_ERR_INTERNAL_ERROR,
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_("unknown virt type in domain definition '%d'"),
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@ -6333,36 +6339,19 @@ qemudDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
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goto endjob;
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}
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if (!(persistentDef = virDomainObjGetPersistentDef(driver->caps, vm)))
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goto endjob;
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switch (flags) {
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case VIR_DOMAIN_VCPU_MAXIMUM | VIR_DOMAIN_VCPU_CONFIG:
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def = vm->def;
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if (virDomainObjIsActive(vm)) {
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if (vm->newDef)
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def = vm->newDef;
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else{
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qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
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_("no persistent state"));
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goto endjob;
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}
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}
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def->maxvcpus = nvcpus;
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if (nvcpus < vm->newDef->vcpus)
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def->vcpus = nvcpus;
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persistentDef->maxvcpus = nvcpus;
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if (nvcpus < persistentDef->vcpus)
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persistentDef->vcpus = nvcpus;
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ret = 0;
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break;
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case VIR_DOMAIN_VCPU_CONFIG:
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def = vm->def;
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if (virDomainObjIsActive(vm)) {
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if (vm->newDef)
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def = vm->newDef;
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else {
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qemuReportError(VIR_ERR_OPERATION_INVALID, "%s",
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_("no persistent state"));
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goto endjob;
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}
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}
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def->vcpus = nvcpus;
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persistentDef->vcpus = nvcpus;
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ret = 0;
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break;
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@ -6372,8 +6361,9 @@ qemudDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus,
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case VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG:
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ret = qemudDomainHotplugVcpus(vm, nvcpus);
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if (ret == 0 && vm->newDef)
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vm->newDef->vcpus = nvcpus;
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if (ret == 0) {
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persistentDef->vcpus = nvcpus;
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}
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break;
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}
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@ -2095,7 +2095,7 @@ testDomainSetVcpusFlags(virDomainPtr domain, unsigned int nrCpus,
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{
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testConnPtr privconn = domain->conn->privateData;
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virDomainObjPtr privdom = NULL;
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virDomainDefPtr def;
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virDomainDefPtr persistentDef;
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int ret = -1, maxvcpus;
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virCheckFlags(VIR_DOMAIN_VCPU_LIVE |
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@ -2145,36 +2145,20 @@ testDomainSetVcpusFlags(virDomainPtr domain, unsigned int nrCpus,
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goto cleanup;
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}
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if (!(persistentDef = virDomainObjGetPersistentDef(privconn->caps,
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privdom)))
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goto cleanup;
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switch (flags) {
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case VIR_DOMAIN_VCPU_MAXIMUM | VIR_DOMAIN_VCPU_CONFIG:
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def = privdom->def;
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if (virDomainObjIsActive(privdom)) {
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if (privdom->newDef)
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def = privdom->newDef;
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else {
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testError(VIR_ERR_OPERATION_INVALID, "%s",
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_("no persistent state"));
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goto cleanup;
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}
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}
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def->maxvcpus = nrCpus;
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if (nrCpus < def->vcpus)
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def->vcpus = nrCpus;
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persistentDef->maxvcpus = nrCpus;
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if (nrCpus < persistentDef->vcpus)
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persistentDef->vcpus = nrCpus;
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ret = 0;
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break;
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case VIR_DOMAIN_VCPU_CONFIG:
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def = privdom->def;
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if (virDomainObjIsActive(privdom)) {
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if (privdom->newDef)
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def = privdom->newDef;
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else {
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testError(VIR_ERR_OPERATION_INVALID, "%s",
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_("no persistent state"));
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goto cleanup;
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}
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}
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def->vcpus = nrCpus;
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persistentDef->vcpus = nrCpus;
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ret = 0;
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break;
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@ -2184,8 +2168,9 @@ testDomainSetVcpusFlags(virDomainPtr domain, unsigned int nrCpus,
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case VIR_DOMAIN_VCPU_LIVE | VIR_DOMAIN_VCPU_CONFIG:
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ret = testDomainUpdateVCPUs(domain->conn, privdom, nrCpus, 0);
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if (ret == 0 && privdom->newDef)
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privdom->newDef->vcpus = nrCpus;
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if (ret == 0) {
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persistentDef->vcpus = nrCpus;
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}
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break;
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}
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