6:59 a.m.
Currently supports only renaming inactive domains without snapshots.
Signed-off-by: Tomas Meszaros <exo(a)tty.sk>
---
src/qemu/qemu_driver.c | 172 +++++++++++++++++++++++++++++++++++++++++++++++++
1 file changed, 172 insertions(+)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index b9278f8..3ff04fe 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -19835,6 +19835,177 @@ qemuDomainSetUserPassword(virDomainPtr dom,
}
+static int qemuDomainRename(virDomainPtr dom,
+ const char *new_name)
+{
+ virQEMUDriverPtr driver = dom->conn->privateData;
+ virQEMUDriverConfigPtr cfg = NULL;
+ virDomainObjPtr vm;
+ virObjectEventPtr event = NULL;
+ int ret = -1;
+ int logfile = -1;
+ size_t i;
+ char ebuf[1024];
+ char *timestamp;
+ char *rename_log_msg = NULL;
+ char *new_dom_name = NULL;
+ char *old_dom_name = NULL;
+ char *old_dom_cfg_file = NULL;
+ char *new_guest_path = NULL;
+ char *old_guest_path = NULL;
+ virDomainChrDefPtr agent = NULL;
+
+ if (VIR_STRDUP(new_dom_name, new_name) < 0)
+ goto cleanup;
+
+ if (!(vm = qemuDomObjFromDomain(dom)))
+ goto cleanup;
+
+ if (virDomainRenameEnsureACL(dom->conn, vm->def) < 0)
+ goto cleanup;
+
+ cfg = virQEMUDriverGetConfig(driver);
+
+ if (qemuDomainObjBeginJob(driver, vm, QEMU_JOB_MODIFY) < 0)
+ goto cleanup;
+
+ if (virDomainObjIsActive(vm)) {
+ virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("cannot rename active domain"));
+ goto endjob;
+ }
+
+ if (!vm->persistent) {
+ virReportError(VIR_ERR_OPERATION_INVALID, "%s",
+ _("cannot rename a transient domain"));
+ goto endjob;
+ }
+
+ if (virDomainObjGetState(vm, NULL) != VIR_DOMAIN_SHUTOFF) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("domain has to be shutoff before
renaming"));
+ goto endjob;
+ }
+
+ if (virDomainSnapshotObjListNum(vm->snapshots, NULL, 0) > 0) {
+ virReportError(VIR_ERR_OPERATION_INVALID,
+ "%s", _("cannot rename domain with
snapshots"));
+ goto endjob;
+ }
+
+ if (virAsprintf(&rename_log_msg, ": domain %s has been renamed to
%s\n",
+ vm->def->name, new_name) < 0) {
+ goto endjob;
+ }
+
+ if (!(old_dom_cfg_file = virDomainConfigFile(cfg->configDir,
+ vm->def->name))) {
+ goto endjob;
+ }
+
+ if (virDomainObjListRenameAddNew(driver->domains, vm, new_name) < 0)
+ goto endjob;
+
+ if ((logfile = qemuDomainCreateLog(driver, vm, true)) < 0)
+ goto rollback;
+
+ /* Switch name in domain definition. */
+ old_dom_name = vm->def->name;
+ vm->def->name = new_dom_name;
+ new_dom_name = NULL;
+
+ /* Change guest agent path. */
+ for (i = 0; i < vm->def->nchannels; i++) {
+ virDomainChrDefPtr channel = vm->def->channels[i];
+ if (channel->deviceType == VIR_DOMAIN_CHR_DEVICE_TYPE_CHANNEL &&
+ channel->targetType == VIR_DOMAIN_CHR_CHANNEL_TARGET_TYPE_VIRTIO
&&
+ channel->source.data.file.path &&
+ channel->target.name) {
+
+ if (virAsprintf(&new_guest_path, "%s/%s.%s",
+ cfg->channelTargetDir,
+ new_name, channel->target.name) < 0)
+ goto rollback;
+
+ old_guest_path = channel->source.data.file.path;
+ channel->source.data.file.path = new_guest_path;
+ new_guest_path = NULL;
+ agent = channel;
+ break;
+ }
+ }
+
+
+ if (virDomainSaveConfig(cfg->configDir, vm->def) < 0)
+ goto rollback;
+
+ if (virFileExists(old_dom_cfg_file) &&
+ unlink(old_dom_cfg_file) < 0) {
+ virReportSystemError(errno,
+ _("cannot remove old domain config file %s"),
+ old_dom_cfg_file);
+ goto rollback;
+ }
+
+ /* Remove old domain name from table. */
+ virDomainObjListRenameRemove(driver->domains, old_dom_name);
+
+ event = virDomainEventLifecycleNewFromObj(vm,
+ VIR_DOMAIN_EVENT_DEFINED,
+ VIR_DOMAIN_EVENT_DEFINED_RENAMED);
+
+ /* Write message to the log. */
+ if ((timestamp = virTimeStringNow()) != NULL) {
+ if (safewrite(logfile, timestamp, strlen(timestamp)) < 0 ||
+ safewrite(logfile, rename_log_msg,
+ strlen(rename_log_msg)) < 0) {
+ VIR_WARN("Unable to write timestamp to logfile: %s",
+ virStrerror(errno, ebuf, sizeof(ebuf)));
+ }
+ VIR_FREE(timestamp);
+ }
+
+ /* Success, domain has been renamed. */
+ ret = 0;
+
+ endjob:
+ qemuDomainObjEndJob(driver, vm);
+
+ cleanup:
+ if (VIR_CLOSE(logfile) < 0) {
+ VIR_WARN("Unable to close logfile: %s",
+ virStrerror(errno, ebuf, sizeof(ebuf)));
+ }
+ virDomainObjEndAPI(&vm);
+ VIR_FREE(old_dom_cfg_file);
+ VIR_FREE(old_dom_name);
+ VIR_FREE(new_dom_name);
+ VIR_FREE(rename_log_msg);
+ VIR_FREE(new_guest_path);
+ VIR_FREE(old_guest_path);
+ if (event)
+ qemuDomainEventQueue(driver, event);
+ virObjectUnref(cfg);
+ return ret;
+
+
+ rollback:
+ if (old_dom_name) {
+ new_dom_name = vm->def->name;
+ vm->def->name = old_dom_name;
+ old_dom_name = NULL;
+ }
+
+ if (agent) {
+ new_guest_path = agent->source.data.file.path;
+ agent->source.data.file.path = old_guest_path;
+ old_guest_path = NULL;
+ }
+
+ virDomainObjListRenameRemove(driver->domains, new_name);
+ goto endjob;
+}
+
static virHypervisorDriver qemuHypervisorDriver = {
.name = QEMU_DRIVER_NAME,
.connectOpen = qemuConnectOpen, /* 0.2.0 */
@@ -20042,6 +20213,7 @@ static virHypervisorDriver qemuHypervisorDriver = {
.domainGetFSInfo = qemuDomainGetFSInfo, /* 1.2.11 */
.domainInterfaceAddresses = qemuDomainInterfaceAddresses, /* 1.2.14 */
.domainSetUserPassword = qemuDomainSetUserPassword, /* 1.2.16 */
+ .domainRename = qemuDomainRename, /* 1.2.19 */
};
--
2.1.0