[libvirt] [PATCHv2] iscsi: do not fail to stop a stopped pool

[Ján Tomko]

Just as we allow stopping filesystem pools when they were unmounted
externally, do not fail to stop an iscsi pool when someone else
closed the session externally.

Reported at:
https://bugzilla.redhat.com/show_bug.cgi?id=1171984
---
v2: Do not report errors when returning success (use probe=true)
    refrain from making controversial claims in the commit message

 src/storage/storage_backend_iscsi.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/src/storage/storage_backend_iscsi.c b/src/storage/storage_backend_iscsi.c
index 197d333..9e2d01e 100644
--- a/src/storage/storage_backend_iscsi.c
+++ b/src/storage/storage_backend_iscsi.c
@@ -449,8 +449,13 @@ virStorageBackendISCSIStopPool(virConnectPtr conn ATTRIBUTE_UNUSED,
                                virStoragePoolObjPtr pool)
 {
     char *portal;
+    char *session;
     int ret = -1;
 
+    if ((session = virStorageBackendISCSISession(pool, true)) == NULL)
+        return 0;
+    VIR_FREE(session);
+
     if ((portal = virStorageBackendISCSIPortal(&pool->def->source)) == NULL)
         return -1;
 
-- 
2.0.5