Support adding a spare to a degraded array.

[thirdparty/mdadm.git] / mdmon.h

diff --git a/mdmon.h b/mdmon.h
index 3886b09eaaf10d65c548c69c41fb2d21083167f4..11320ef6994dc65bcd7cb701a77b939d719f23b4 100644 (file)
--- a/mdmon.h
+++ b/mdmon.h
@@ -11,28 +11,46 @@ struct active_array {
        struct active_array *next, *replaces;
 
        int action_fd;
-       int sync_pos_fd;
        int resync_start_fd;
 
        enum array_state prev_state, curr_state, next_state;
        enum sync_action prev_action, curr_action, next_action;
 
+       int check_degraded; /* flag set by mon, read by manage */
+
        int devnum;
 
-       unsigned long long sync_pos;
        unsigned long long resync_start;
 };
 
-
+/*
+ * Metadata updates are handled by the monitor thread,
+ * as it has exclusive access to the metadata.
+ * When the manager want to updates metadata, either
+ * for it's own reason (e.g. committing a spare) or
+ * on behalf of mdadm, it creates a metadata_update
+ * structure and queues it to the monitor.
+ * Updates are created and processed by code under the
+ * superswitch.  All common code sees them as opaque
+ * blobs.
+ */
+struct metadata_update {
+       int     len;
+       char    *buf;
+       void    *space; /* allocated space that monitor will use */
+       struct metadata_update *next;
+};
+extern struct metadata_update *update_queue, *update_queue_handled;
 
 #define MD_MAJOR 9
 
 extern struct active_array *container;
-extern struct active_array *array_list;
 extern struct active_array *discard_this;
 extern struct active_array *pending_discard;
+extern struct md_generic_cmd *active_cmd;
 
 
+void remove_pidfile(char *devname);
 void do_monitor(struct supertype *container);
 void do_manager(struct supertype *container);
 
@@ -41,3 +59,5 @@ int read_dev_state(int fd);
 struct mdstat_ent *mdstat_read(int hold, int start);
 
 extern struct superswitch super_ddf, super_ddf_bvd, super_ddf_svd;
+
+extern int exit_now, manager_ready;