[libvirt] [PATCH 1/2] storage: Fix autostart of pool with "fc_host" type adapter

[Osier Yang]

The "checkPool" is a bit different for pool with "fc_host"
type source adapter, since the vHBA it's based on might be
not created yet (it's created by "startPool", which is
involked after "checkPool" in storageDriverAutostart). So it
should not fail, otherwise the "autostart" of the pool will
fail either.

The problem is easy to reproduce:
    * Enable "autostart" for the pool
    * Restart libvirtd service
    * Check the pool's state
---
 src/storage/storage_backend_scsi.c | 14 ++++++++++++--
 1 file changed, 12 insertions(+), 2 deletions(-)

diff --git a/src/storage/storage_backend_scsi.c b/src/storage/storage_backend_scsi.c
index 6f86ffc..93039c1 100644
--- a/src/storage/storage_backend_scsi.c
+++ b/src/storage/storage_backend_scsi.c
@@ -702,8 +702,18 @@ virStorageBackendSCSICheckPool(virConnectPtr conn ATTRIBUTE_UNUSED,
 
     *isActive = false;
 
-    if (!(name = getAdapterName(pool->def->source.adapter)))
-        return -1;
+    if (!(name = getAdapterName(pool->def->source.adapter))) {
+        /* It's normal for the pool with "fc_host" type source
+         * adapter fails to get the adapter name, since the vHBA
+         * the adapter based on might be not created yet.
+         */
+        if (pool->def->source.adapter.type ==
+            VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_FC_HOST) {
+            return 0;
+        } else {
+            return -1;
+        }
+    }
 
     if (getHostNumber(name, &host) < 0)
         goto cleanup;
-- 
1.8.1.4