storage: Add startPool and stopPool for scsi backend

startPool creates the vHBA if it's not existed yet, stopPool destroys
the vHBA. Also to support autostart, checkPool will creates the vHBA
if it's not existed yet.

diff --git a/src/storage/storage_backend_scsi.c b/src/storage/storage_backend_scsi.c
index 275458b32f5c0a7b6b4a6ef95b725c4517379275..d72c1533548e7c075f2ae23dc945cf9ba8c14d3c 100644 (file)
--- a/src/storage/storage_backend_scsi.c
+++ b/src/storage/storage_backend_scsi.c
@@ -644,6 +644,62 @@ getAdapterName(virStoragePoolSourceAdapter adapter)
     return name;
 }
 
+static int
+createVport(virStoragePoolSourceAdapter adapter)
+{
+    unsigned int parent_host;
+    char *name = NULL;
+
+    if (adapter.type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
+        return 0;
+
+    /* This filters either HBA or already created vHBA */
+    if ((name = virGetFCHostNameByWWN(NULL, adapter.data.fchost.wwnn,
+                                      adapter.data.fchost.wwpn))) {
+        VIR_FREE(name);
+        return 0;
+    }
+
+    if (!adapter.data.fchost.parent) {
+        virReportError(VIR_ERR_XML_ERROR, "%s",
+                       _("'parent' for vHBA must be specified"));
+        return -1;
+    }
+
+    if (getHostNumber(adapter.data.fchost.parent, &parent_host) < 0)
+        return -1;
+
+    if (virManageVport(parent_host, adapter.data.fchost.wwnn,
+                       adapter.data.fchost.wwpn, VPORT_CREATE) < 0)
+        return -1;
+
+    virFileWaitForDevices();
+    return 0;
+}
+
+static int
+deleteVport(virStoragePoolSourceAdapter adapter)
+{
+    unsigned int parent_host;
+
+    if (adapter.type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
+        return 0;
+
+    if (!(virGetFCHostNameByWWN(NULL, adapter.data.fchost.wwnn,
+                                adapter.data.fchost.wwpn)))
+        return -1;
+
+    if (getHostNumber(adapter.data.fchost.parent, &parent_host) < 0)
+        return -1;
+
+    if (virManageVport(parent_host, adapter.data.fchost.wwnn,
+                       adapter.data.fchost.wwpn, VPORT_DELETE) < 0)
+        return -1;
+
+    return 0;
+}
+
+
 static int
 virStorageBackendSCSICheckPool(virConnectPtr conn ATTRIBUTE_UNUSED,
                                virStoragePoolObjPtr pool,
@@ -706,10 +762,27 @@ out:
     return ret;
 }
 
+static int
+virStorageBackendSCSIStartPool(virConnectPtr conn ATTRIBUTE_UNUSED,
+                               virStoragePoolObjPtr pool)
+{
+    virStoragePoolSourceAdapter adapter = pool->def->source.adapter;
+    return createVport(adapter);
+}
+
+static int
+virStorageBackendSCSIStopPool(virConnectPtr conn ATTRIBUTE_UNUSED,
+                              virStoragePoolObjPtr pool)
+{
+    virStoragePoolSourceAdapter adapter = pool->def->source.adapter;
+    return deleteVport(adapter);
+}
 
 virStorageBackend virStorageBackendSCSI = {
     .type = VIR_STORAGE_POOL_SCSI,
 
     .checkPool = virStorageBackendSCSICheckPool,
     .refreshPool = virStorageBackendSCSIRefreshPool,
+    .startPool = virStorageBackendSCSIStartPool,
+    .stopPool = virStorageBackendSCSIStopPool,
 };