Create arrays via metadata-update

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index 08b78689b1c410120e3bde3427f09b2669b20cd6..5e2cfe41c1fc3eeb493c7c65c642dba000f5a3fe 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -542,6 +542,8 @@ extern struct superswitch {
        void (*sync_metadata)(struct supertype *st);
        void (*process_update)(struct supertype *st,
                               struct metadata_update *update);
+       void (*prepare_update)(struct supertype *st,
+                              struct metadata_update *update);
 
        /* activate_spare will check if the array is degraded and, if it
         * is, try to find some spare space in the container.
@@ -559,6 +561,13 @@ extern struct superswitch {
 
 extern struct superswitch super_imsm;
 
+struct metadata_update {
+       int     len;
+       char    *buf;
+       void    *space; /* allocated space that monitor will use */
+       struct metadata_update *next;
+};
+
 /* A supertype holds a particular collection of metadata.
  * It identifies the metadata type by the superswitch, and the particular
  * sub-version of that metadata type.
@@ -579,6 +588,9 @@ struct supertype {
        void *sb;
        void *info;
 
+       struct metadata_update *updates;
+       struct metadata_update **update_tail;
+
        /* extra stuff used by mdmon */
        struct active_array *arrays;
        int sock; /* listen to external programs */
@@ -738,6 +750,8 @@ extern unsigned long long get_component_size(int fd);
 extern void remove_partitions(int fd);
 extern unsigned long long calc_array_size(int level, int raid_disks, int layout,
                                   int chunksize, unsigned long long devsize);
+extern int flush_metadata_updates(struct supertype *st);
+extern void append_metadata_update(struct supertype *st, void *buf, int len);
 
 
 extern char *human_size(long long bytes);