Re: [libvirt] [PATCH] qemu: Set domain def as updated and transient if changes

As qemu driver doesn't allow to make changes on persistent domain configuration via "attach/detach/update device",

and all the changes made on the running domain configuration should not be persistent across next boot (without the need of restarting libvirtd), so: 1) Set the running domain def as transient, and restore the domain configuration to original configuration when shutdown. 2) Set the running domain def as updated, and reset it as not updated when shutdown. Also for "live VCPU set", it doesn't change the persistent domain configuration, so, we also set the running domain def as updated and transient, and restore the original def when shutdown. @@ -6353,6 +6360,17 @@ qemudDomainSetVcpusFlags(virDomainPtr dom, unsigned int nvcpus, if (flags & VIR_DOMAIN_VCPU_CONFIG) ret = virDomainSaveConfig(driver->configDir, persistentDef); + if (flags & VIR_DOMAIN_VCPU_LIVE) { + /* Set running domain def as updated */ + if (ret == 0) { + vm->updated = 1; + + if (virDomainObjSetDefTransient(driver->caps, vm) < 0) + VIR_ERROR("Unable to set domain %s's running config as transient", + vm->def->name); + } + }