[PATCH v4 3/7] nbd/client-connection: improve error message of cancelled attempt

[Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>]

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
---
 nbd/client-connection.c | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/nbd/client-connection.c b/nbd/client-connection.c
index 722998c985..2bda42641d 100644
--- a/nbd/client-connection.c
+++ b/nbd/client-connection.c
@@ -351,8 +351,15 @@ nbd_co_establish_connection(NBDClientConnection *conn, NBDExportInfo *info,
             if (conn->err) {
                 error_propagate(errp, error_copy(conn->err));
             } else {
-                error_setg(errp,
-                           "Connection attempt cancelled by other operation");
+                /*
+                 * The only possible case here is cancelling by open_timer
+                 * during nbd_open(). So, the error message is for that case.
+                 * If we have more use cases, we can refactor
+                 * nbd_co_establish_connection_cancel() to take an additional
+                 * parameter cancel_reason, that would be passed than to the
+                 * caller of cancelled nbd_co_establish_connection().
+                 */
+                error_setg(errp, "Connection attempt cancelled by timeout");
             }
 
             return NULL;
-- 
2.31.1