[PATCH 6/7] storage: Add startPool and stopPool for scsi backend

[Osier Yang <jyang@xxxxxxxxxx>]

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.
---
 src/storage/storage_backend_scsi.c | 64 ++++++++++++++++++++++++++++++++++++++
 1 file changed, 64 insertions(+)

diff --git a/src/storage/storage_backend_scsi.c b/src/storage/storage_backend_scsi.c
index 258c82e..0bb4e70 100644
--- a/src/storage/storage_backend_scsi.c
+++ b/src/storage/storage_backend_scsi.c
@@ -646,6 +646,36 @@ getAdapterName(virStoragePoolSourceAdapter adapter)
 }
 
 static int
+createVport(virStoragePoolSourceAdapter adapter)
+{
+    unsigned int parent_host;
+
+    if (adapter.type != VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST)
+        return 0;
+
+    /* This filters either HBA or already created vHBA */
+    if (virGetFCHostNameByWWN(NULL, adapter.data.fchost.wwnn,
+                              adapter.data.fchost.wwpn))
+        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
 virStorageBackendSCSICheckPool(virConnectPtr conn ATTRIBUTE_UNUSED,
                                virStoragePoolObjPtr pool,
                                bool *isActive)
@@ -707,10 +737,44 @@ 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;
+    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;
+}
 
 virStorageBackend virStorageBackendSCSI = {
     .type = VIR_STORAGE_POOL_SCSI,
 
     .checkPool = virStorageBackendSCSICheckPool,
     .refreshPool = virStorageBackendSCSIRefreshPool,
+    .startPool = virStorageBackendSCSIStartPool,
+    .stopPool = virStorageBackendSCSIStopPool,
 };
-- 
1.8.0.1

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