Improve reporting of layout for raid10.

[thirdparty/mdadm.git] / md_p.h

diff --git a/md_p.h b/md_p.h
index 0a0b38156fd38d3e5a6dc706fd7c8e9b0d9b8e42..a9f0204c754a4ab9ac12d02ff5e182910b45cca1 100644 (file)
--- a/md_p.h
+++ b/md_p.h
@@ -1,15 +1,15 @@
 /*
    md_p.h : physical layout of Linux RAID devices
           Copyright (C) 1996-98 Ingo Molnar, Gadi Oxman
-         
+
    This program is free software; you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation; either version 2, or (at your option)
    any later version.
-   
+
    You should have received a copy of the GNU General Public License
    (for example /usr/src/linux/COPYING); if not, write to the Free
-   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  
+   Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
 #ifndef _MD_P_H
@@ -80,7 +80,7 @@
 #define MD_DISK_REMOVED                3 /* disk is in sync with the raid set */
 
 #define        MD_DISK_WRITEMOSTLY     9 /* disk is "write-mostly" is RAID1 config.
-                                  * read requests will only be sent here in 
+                                  * read requests will only be sent here in
                                   * dire need
                                   */
 
@@ -147,7 +147,13 @@ typedef struct mdp_superblock_s {
        __u32 cp_events_hi;     /* 10 high-order of checkpoint update count   */
 #endif
        __u32 recovery_cp;      /* 11 recovery checkpoint sector count        */
-       __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 12];
+       /* There are only valid for minor_version > 90 */
+       __u64 reshape_position; /* 12,13 next address in array-space for reshape */
+       __u32 new_level;        /* 14 new level we are reshaping to           */
+       __u32 delta_disks;      /* 15 change in number of raid_disks          */
+       __u32 new_layout;       /* 16 new layout                              */
+       __u32 new_chunk;        /* 17 new chunk size (bytes)                  */
+       __u32 gstate_sreserved[MD_SB_GENERIC_STATE_WORDS - 18];
 
        /*
         * Personality information
@@ -184,5 +190,5 @@ static inline __u64 md_event(mdp_super_t *sb) {
        return (ev<<32)| sb->events_lo;
 }
 
-#endif 
+#endif