[libvirt] [PATCH v2 4/4] storage: Fetch a unique key for vHBA/NPIV LUNs

[John Ferlan]

https://bugzilla.redhat.com/show_bug.cgi?id=1657468

Commit be1bb6c95 changed the way volumes were stored from a forward
linked list to a hash table. In doing so, it required that each vol
object would have 3 unique values as keys into tables - key, name,
and path. Due to how vHBA/NPIV LUNs are created/used this resulted
in a failure to utilize all the LUN's found during processing.

During virStorageBackendSCSINewLun processing fetch the key (or
serial value) for NPIV LUN's using virStorageFileGetNPIVKey which
will formulate a more unique key based on the serial value and
the port for the LUN.

Signed-off-by: John Ferlan <jferlan at redhat.com>
---
 src/storage/storage_util.c | 13 ++++++++++---
 1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/src/storage/storage_util.c b/src/storage/storage_util.c
index aa1af434de..089eca01bf 100644
--- a/src/storage/storage_util.c
+++ b/src/storage/storage_util.c
@@ -3756,12 +3756,16 @@ virStorageBackendRefreshLocal(virStoragePoolObjPtr pool)
 
 
 static char *
-virStorageBackendSCSISerial(const char *dev)
+virStorageBackendSCSISerial(const char *dev,
+                            bool isNPIV)
 {
     int rc;
     char *serial = NULL;
 
-    rc = virStorageFileGetSCSIKey(dev, &serial);
+    if (isNPIV)
+        rc = virStorageFileGetNPIVKey(dev, &serial);
+    else
+        rc = virStorageFileGetSCSIKey(dev, &serial);
     if (rc == 0 && serial)
         return serial;
 
@@ -3859,7 +3863,10 @@ virStorageBackendSCSINewLun(virStoragePoolObjPtr pool,
                                                  VIR_STORAGE_VOL_READ_NOERROR)) < 0)
         goto cleanup;
 
-    if (!(vol->key = virStorageBackendSCSISerial(vol->target.path)))
+    vol->key = virStorageBackendSCSISerial(vol->target.path,
+                                           (def->source.adapter.type ==
+                                            VIR_STORAGE_ADAPTER_TYPE_FC_HOST));
+    if (!vol->key)
         goto cleanup;
 
     def->capacity += vol->target.capacity;
-- 
2.20.1