Allow data-offset to be specified per-device for create

[thirdparty/mdadm.git] / mdadm.h

diff --git a/mdadm.h b/mdadm.h
index 457cc5831e2f7f2c845400a6ef14c18a8da12235..e142c502d8d0f1d264c40d920b5f6e94644a8ac3 100644 (file)
--- a/mdadm.h
+++ b/mdadm.h
@@ -433,6 +433,7 @@ struct mddev_dev {
                                 */
        char writemostly;       /* 1 for 'set writemostly', 2 for 'clear writemostly' */
        char used;              /* set when used */
+       long long data_offset;
        struct mddev_dev *next;
 };
 
@@ -742,7 +743,8 @@ extern struct superswitch {
         * when hot-adding a spare.
         */
        int (*add_to_super)(struct supertype *st, mdu_disk_info_t *dinfo,
-                           int fd, char *devname);
+                           int fd, char *devname,
+                           unsigned long long data_offset);
        /* update the metadata to delete a device,
         * when hot-removing.
         */
@@ -1479,5 +1481,7 @@ char *xstrdup(const char *str);
  * a value for 'invalid'.  Use '1'.
  */
 #define INVALID_SECTORS 1
+/* And another special number needed for --data_offset=variable */
+#define VARIABLE_OFFSET 3
 
 extern int __offroot;