/**
* gvir_storage_pool_create_volume:
* @pool: the storage pool in which to create the volume
* @conf: the configuration for the new volume
* @err: Place-holder for possible errors
*
* Returns: (transfer full): the newly created volume. The returned object
* should be unreffed with g_object_unref() when no longer needed.
*/
GVirStorageVol *gvir_storage_pool_create_volume
(GVirStoragePool *pool,
GVirConfigStorageVol *conf,
GError **err)
{
const gchar *xml;
virStorageVolPtr handle;
GVirStoragePoolPrivate *priv;
g_return_val_if_fail(GVIR_IS_STORAGE_POOL(pool), NULL);
g_return_val_if_fail(GVIR_CONFIG_IS_STORAGE_VOL(conf), NULL);
g_return_val_if_fail(err == NULL || *err == NULL, NULL);
xml = gvir_config_object_to_xml(GVIR_CONFIG_OBJECT(conf));
g_return_val_if_fail(xml != NULL, NULL);
priv = pool->priv;
if (!(handle = virStorageVolCreateXML(priv->handle, xml, 0))) {
gvir_set_error_literal(err, GVIR_STORAGE_POOL_ERROR,
0,
"Failed to create volume");
return NULL;
}
GVirStorageVol *volume;
const char *name;
volume = GVIR_STORAGE_VOL(g_object_new(GVIR_TYPE_STORAGE_VOL,
"handle", handle,
"pool", pool,
NULL));
name = gvir_storage_vol_get_name(volume);
if (name == NULL) {
g_object_unref(G_OBJECT(volume));
return NULL;
}
g_mutex_lock(priv->lock);
if (priv->volumes != NULL) {
g_hash_table_insert(priv->volumes, g_strdup(name), volume);
} else {
g_warn_if_reached();
g_object_unref(G_OBJECT(volume));
g_mutex_unlock(priv->lock);
return NULL;
}
g_mutex_unlock(priv->lock);
return g_object_ref(volume);
}
static bool
cmdVolCreate(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
const char *from = NULL;
bool ret = true;
char *buffer;
if (!vshConnectionUsability(ctl, ctl->conn))
return false;
if (!(pool = vshCommandOptPoolBy(ctl, cmd, "pool", NULL,
VSH_BYNAME)))
return false;
if (vshCommandOptString(cmd, "file", &from) <= 0) {
virStoragePoolFree(pool);
return false;
}
if (virFileReadAll(from, VIRSH_MAX_XML_FILE, &buffer) < 0) {
virshReportError(ctl);
virStoragePoolFree(pool);
return false;
}
vol = virStorageVolCreateXML(pool, buffer, 0);
VIR_FREE(buffer);
virStoragePoolFree(pool);
if (vol != NULL) {
vshPrint(ctl, _("Vol %s created from %s\n"),
virStorageVolGetName(vol), from);
virStorageVolFree(vol);
} else {
vshError(ctl, _("Failed to create vol from %s"), from);
ret = false;
}
return ret;
}
Result StorageVolControlThread::createStorageVol()
{
Result result;
result.name = QString("%1_%2").arg(task.srcConName).arg(currPoolName);
QString path = task.args.path;
QByteArray xmlData;
QFile f;
f.setFileName(path);
if ( !f.open(QIODevice::ReadOnly) ) {
QString msg = QString("File \"%1\"\nnot opened.").arg(path);
emit errorMsg( msg, number );
result.result = false;
result.err = msg;
return result;
};
xmlData = f.readAll();
f.close();
if (currStoragePool!=NULL) {
virStoragePoolFree(currStoragePool);
currStoragePool = NULL;
};
currStoragePool = virStoragePoolLookupByName(
*task.srcConnPtr, currPoolName.toUtf8().data());
virStorageVolPtr storageVol = virStorageVolCreateXML(
currStoragePool, xmlData.data(), VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA);
if ( storageVol==NULL ) {
result.err = sendConnErrors();
result.result = false;
return result;
};
QString name = QString().fromUtf8( virStorageVolGetName(storageVol) );
result.msg.append(
QString("'<b>%1</b>' StorageVol from\n\"%2\"\nis created.")
.arg(name).arg(path));
virStorageVolFree(storageVol);
result.result = true;
return result;
}
static bool
cmdVolCreate(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
const char *from = NULL;
bool ret = false;
unsigned int flags = 0;
char *buffer = NULL;
if (vshCommandOptBool(cmd, "prealloc-metadata"))
flags |= VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA;
if (!(pool = vshCommandOptPool(ctl, cmd, "pool", NULL)))
return false;
if (vshCommandOptStringReq(ctl, cmd, "file", &from) < 0)
goto cleanup;
if (virFileReadAll(from, VSH_MAX_XML_FILE, &buffer) < 0) {
vshSaveLibvirtError();
goto cleanup;
}
if ((vol = virStorageVolCreateXML(pool, buffer, flags))) {
vshPrint(ctl, _("Vol %s created from %s\n"),
virStorageVolGetName(vol), from);
virStorageVolFree(vol);
ret = true;
} else {
vshError(ctl, _("Failed to create vol from %s"), from);
}
cleanup:
VIR_FREE(buffer);
virStoragePoolFree(pool);
return ret;
}
static bool
cmdVolCreateAs(vshControl *ctl, const vshCmd *cmd)
{
virStoragePoolPtr pool;
virStorageVolPtr vol;
char *xml;
const char *name, *capacityStr = NULL, *allocationStr = NULL, *format = NULL;
const char *snapshotStrVol = NULL, *snapshotStrFormat = NULL;
unsigned long long capacity, allocation = 0;
virBuffer buf = VIR_BUFFER_INITIALIZER;
if (!vshConnectionUsability(ctl, ctl->conn))
return false;
if (!(pool = vshCommandOptPoolBy(ctl, cmd, "pool", NULL,
VSH_BYNAME)))
return false;
if (vshCommandOptString(cmd, "name", &name) <= 0)
goto cleanup;
if (vshCommandOptString(cmd, "capacity", &capacityStr) <= 0)
goto cleanup;
if (vshVolSize(capacityStr, &capacity) < 0) {
vshError(ctl, _("Malformed size %s"), capacityStr);
goto cleanup;
}
if (vshCommandOptString(cmd, "allocation", &allocationStr) > 0 &&
vshVolSize(allocationStr, &allocation) < 0) {
vshError(ctl, _("Malformed size %s"), allocationStr);
goto cleanup;
}
if (vshCommandOptString(cmd, "format", &format) < 0 ||
vshCommandOptString(cmd, "backing-vol", &snapshotStrVol) < 0 ||
vshCommandOptString(cmd, "backing-vol-format",
&snapshotStrFormat) < 0) {
vshError(ctl, "%s", _("missing argument"));
goto cleanup;
}
virBufferAddLit(&buf, "<volume>\n");
virBufferAsprintf(&buf, " <name>%s</name>\n", name);
virBufferAsprintf(&buf, " <capacity>%llu</capacity>\n", capacity);
if (allocationStr)
virBufferAsprintf(&buf, " <allocation>%llu</allocation>\n", allocation);
if (format) {
virBufferAddLit(&buf, " <target>\n");
virBufferAsprintf(&buf, " <format type='%s'/>\n",format);
virBufferAddLit(&buf, " </target>\n");
}
/* Convert the snapshot parameters into backingStore XML */
if (snapshotStrVol) {
/* Lookup snapshot backing volume. Try the backing-vol
* parameter as a name */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as name\n",
cmd->def->name, snapshotStrVol);
virStorageVolPtr snapVol = virStorageVolLookupByName(pool, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as name\n",
cmd->def->name, snapshotStrVol);
if (snapVol == NULL) {
/* Snapshot backing volume not found by name. Try the
* backing-vol parameter as a key */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as key\n",
cmd->def->name, snapshotStrVol);
snapVol = virStorageVolLookupByKey(ctl->conn, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as key\n",
cmd->def->name, snapshotStrVol);
}
if (snapVol == NULL) {
/* Snapshot backing volume not found by key. Try the
* backing-vol parameter as a path */
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Look up backing store volume '%s' as path\n",
cmd->def->name, snapshotStrVol);
snapVol = virStorageVolLookupByPath(ctl->conn, snapshotStrVol);
if (snapVol)
vshDebug(ctl, VSH_ERR_DEBUG,
"%s: Backing store volume found using '%s' as path\n",
cmd->def->name, snapshotStrVol);
}
if (snapVol == NULL) {
vshError(ctl, _("failed to get vol '%s'"), snapshotStrVol);
goto cleanup;
}
char *snapshotStrVolPath;
if ((snapshotStrVolPath = virStorageVolGetPath(snapVol)) == NULL) {
virStorageVolFree(snapVol);
goto cleanup;
}
/* Create XML for the backing store */
virBufferAddLit(&buf, " <backingStore>\n");
virBufferAsprintf(&buf, " <path>%s</path>\n",snapshotStrVolPath);
if (snapshotStrFormat)
virBufferAsprintf(&buf, " <format type='%s'/>\n",snapshotStrFormat);
virBufferAddLit(&buf, " </backingStore>\n");
/* Cleanup snapshot allocations */
VIR_FREE(snapshotStrVolPath);
virStorageVolFree(snapVol);
}
virBufferAddLit(&buf, "</volume>\n");
if (virBufferError(&buf)) {
vshPrint(ctl, "%s", _("Failed to allocate XML buffer"));
goto cleanup;
}
xml = virBufferContentAndReset(&buf);
vol = virStorageVolCreateXML(pool, xml, 0);
VIR_FREE(xml);
virStoragePoolFree(pool);
if (vol != NULL) {
vshPrint(ctl, _("Vol %s created\n"), name);
virStorageVolFree(vol);
return true;
} else {
vshError(ctl, _("Failed to create vol %s"), name);
return false;
}
cleanup:
virBufferFreeAndReset(&buf);
virStoragePoolFree(pool);
return false;
}