add a new "recovery mode" field to ctdb.

while recovery is in progress  the daemon will discard all CTDB_REQ_CALL 
and rely on clients retransmitting them

add new controls to get/set the recovery mode

(This used to be ctdb commit 41458a61577885ac49150f830e92e93e634c5411)

2 files changed, 16 insertions, 1 deletions

diff --git a/ctdb/include/ctdb.h b/ctdb/include/ctdb.h
index f7eb16b75e..aa2f31fa34 100644
--- a/ctdb/include/ctdb.h
+++ b/ctdb/include/ctdb.h
@@ -276,4 +276,16 @@ int ctdb_cleardb(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_c
  */
 int ctdb_pulldb(struct ctdb_context *ctdb, uint32_t destnode, TALLOC_CTX *mem_ctx, uint32_t dbid, uint32_t from_vnn);
 
+
+#define CTDB_RECOVERY_NORMAL		0
+#define CTDB_RECOVERY_ACTIVE		1
+/*
+  get the recovery mode of a remote node
+ */
+int ctdb_getrecmode(struct ctdb_context *ctdb, uint32_t destnode, uint32_t *recmode);
+/*
+  set the recovery mode of a remote node
+ */
+int ctdb_setrecmode(struct ctdb_context *ctdb, uint32_t destnode, uint32_t recmode);
+
 #endif
diff --git a/ctdb/include/ctdb_private.h b/ctdb/include/ctdb_private.h
index ce47f9948d..73de824f33 100644
--- a/ctdb/include/ctdb_private.h
+++ b/ctdb/include/ctdb_private.h
@@ -173,6 +173,7 @@ struct ctdb_vnn_map {
 /* main state of the ctdb daemon */
 struct ctdb_context {
 	struct event_context *ev;
+	uint32_t recovery_mode;
 	struct ctdb_address address;
 	const char *name;
 	const char *db_directory;
@@ -258,7 +259,9 @@ enum ctdb_controls {CTDB_CONTROL_PROCESS_EXISTS,
 		    CTDB_CONTROL_GET_KEYS,
 		    CTDB_CONTROL_SET_DMASTER,
 		    CTDB_CONTROL_CLEAR_DB,
-		    CTDB_CONTROL_PULL_DB};
+		    CTDB_CONTROL_PULL_DB,
+		    CTDB_CONTROL_GET_RECMODE,
+		    CTDB_CONTROL_SET_RECMODE};
 
 enum call_state {CTDB_CALL_WAIT, CTDB_CALL_DONE, CTDB_CALL_ERROR};