X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=md_p.h;h=358a28ce3fcff3be791712848c41402d835e79cd;hb=9cd39f015558dba82c293a4433b481b921ceec87;hp=0d691fbc987dc3bd9a0845a8c63d7af40cd925c7;hpb=cc1799c3ddc99454903a8591bb27f30505bcd2dc;p=thirdparty%2Fmdadm.git

diff --git a/md_p.h b/md_p.h
index 0d691fbc..358a28ce 100644
--- a/md_p.h
+++ b/md_p.h
@@ -89,6 +89,7 @@
 				   * read requests will only be sent here in
 				   * dire need
 				   */
+#define	MD_DISK_FAILFAST	10 /* Fewer retries, more failures */
 
 #define MD_DISK_REPLACEMENT	17
 #define MD_DISK_JOURNAL		18 /* disk is used as the write journal in RAID-5/6 */
@@ -266,4 +267,29 @@ struct r5l_meta_block {
 #define R5LOG_VERSION 0x1
 #define R5LOG_MAGIC 0x6433c509
 
+struct ppl_header_entry {
+	__u64 data_sector;	/* raid sector of the new data */
+	__u32 pp_size;		/* length of partial parity */
+	__u32 data_size;	/* length of data */
+	__u32 parity_disk;	/* member disk containing parity */
+	__u32 checksum;		/* checksum of this entry's partial parity */
+} __attribute__ ((__packed__));
+
+#define PPL_HEADER_SIZE 4096
+#define PPL_HDR_RESERVED 512
+#define PPL_HDR_ENTRY_SPACE \
+	(PPL_HEADER_SIZE - PPL_HDR_RESERVED - 4 * sizeof(__u32) - sizeof(__u64))
+#define PPL_HDR_MAX_ENTRIES \
+	(PPL_HDR_ENTRY_SPACE / sizeof(struct ppl_header_entry))
+
+struct ppl_header {
+	__u8 reserved[PPL_HDR_RESERVED];/* reserved space, fill with 0xff */
+	__u32 signature;		/* signature (family number of volume) */
+	__u32 padding;			/* zero pad */
+	__u64 generation;		/* generation number of the header */
+	__u32 entries_count;		/* number of entries in entry array */
+	__u32 checksum;			/* checksum of the header */
+	struct ppl_header_entry entries[PPL_HDR_MAX_ENTRIES];
+} __attribute__ ((__packed__));
+
 #endif