X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=bitmap.h;h=7b1f80f2e8f64a80ddf298e936d579e813d6cf36;hb=975898395951835f5a8051441af21cc995921f8c;hp=02a4e97acabc507e7f75697e39116589435e67bd;hpb=dfd4d8ee426fb71a369f494f95fe95b114a33c7c;p=thirdparty%2Fmdadm.git

diff --git a/bitmap.h b/bitmap.h
index 02a4e97a..7b1f80f2 100644
--- a/bitmap.h
+++ b/bitmap.h
@@ -6,7 +6,14 @@
 #ifndef BITMAP_H
 #define BITMAP_H 1
 
-#define BITMAP_MAJOR 3
+#define BITMAP_MAJOR_LO 3
+/* version 4 insists the bitmap is in little-endian order
+ * with version 3, it is host-endian which is non-portable
+ */
+#define BITMAP_MAJOR_HI 4
+#define	BITMAP_MAJOR_HOSTENDIAN 3
+#define	BITMAP_MAJOR_CLUSTERED 5
+
 #define BITMAP_MINOR 39
 
 /*
@@ -39,7 +46,7 @@
  *
  * The counter counts pending write requests, plus the on-disk bit.
  * When the counter is '1' and the resync bits are clear, the on-disk
- * bit can be cleared aswell, thus setting the counter to 0.
+ * bit can be cleared as well, thus setting the counter to 0.
  * When we set a bit, or in the counter (to start a write), if the fields is
  * 0, we first set the disk bit and set the counter to 1.
  *
@@ -148,15 +155,18 @@ typedef struct bitmap_super_s {
 	__u32 chunksize;    /* 52  the bitmap chunk size in bytes */
 	__u32 daemon_sleep; /* 56  seconds between disk flushes */
 	__u32 write_behind; /* 60  number of outstanding write-behind writes */
-
-	__u8  pad[256 - 64]; /* set to zero */
+	__u32 sectors_reserved; /* 64 number of 512-byte sectors that are
+				 * reserved for the bitmap. */
+	__u32 nodes;        /* 68 the maximum number of nodes in cluster. */
+	__u8 cluster_name[64]; /* 72 cluster name to which this md belongs */
+	__u8  pad[256 - 136]; /* set to zero */
 } bitmap_super_t;
 
 /* notes:
  * (1) This event counter is updated before the eventcounter in the md superblock
  *    When a bitmap is loaded, it is only accepted if this event counter is equal
  *    to, or one greater than, the event counter in the superblock.
- * (2) This event counter is updated when the other one is *if*and*only*if* the 
+ * (2) This event counter is updated when the other one is *if*and*only*if* the
  *    array is not degraded.  As bits are not cleared when the array is degraded,
  *    this represents the last time that any bits were cleared.
  *    If a device is being added that has an event count with this value or
@@ -175,13 +185,13 @@ struct bitmap_page {
 	 */
 	char *map;
 	/*
-	 * in emergencies (when map cannot be alloced), hijack the map
+	 * in emergencies (when map cannot be allocated), hijack the map
 	 * pointer and use it as two counters itself
 	 */
 	unsigned int hijacked;
 	/*
 	 * count of dirty bits on the page
-	 */ 
+	 */
 	int count;
 };