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authorLinus Torvalds <torvalds@linux-foundation.org>2011-07-28 05:50:27 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-07-28 05:50:27 -0700
commit6140333d3656f62ac7e6a5af87e7fe92cfb8d655 (patch)
treed96f7ad2196b4383f5ca4396c956e24c82b2952c /include
parent6f56c218666b5c7eff354364357307d18c10058b (diff)
parent58c54fcca3bac5bf9290cfed31c76e4c4bfbabaf (diff)
Merge branch 'for-linus' of git://neil.brown.name/md
* 'for-linus' of git://neil.brown.name/md: (75 commits) md/raid10: handle further errors during fix_read_error better. md/raid10: Handle read errors during recovery better. md/raid10: simplify read error handling during recovery. md/raid10: record bad blocks due to write errors during resync/recovery. md/raid10: attempt to fix read errors during resync/check md/raid10: Handle write errors by updating badblock log. md/raid10: clear bad-block record when write succeeds. md/raid10: avoid writing to known bad blocks on known bad drives. md/raid10 record bad blocks as needed during recovery. md/raid10: avoid reading known bad blocks during resync/recovery. md/raid10 - avoid reading from known bad blocks - part 3 md/raid10: avoid reading from known bad blocks - part 2 md/raid10: avoid reading from known bad blocks - part 1 md/raid10: Split handle_read_error out from raid10d. md/raid10: simplify/reindent some loops. md/raid5: Clear bad blocks on successful write. md/raid5. Don't write to known bad block on doubtful devices. md/raid5: write errors should be recorded as bad blocks if possible. md/raid5: use bad-block log to improve handling of uncorrectable read errors. md/raid5: avoid reading from known bad blocks. ...
Diffstat (limited to 'include')
-rw-r--r--include/linux/raid/md_p.h14
1 files changed, 10 insertions, 4 deletions
diff --git a/include/linux/raid/md_p.h b/include/linux/raid/md_p.h
index 75cbf4f62fe8..9e65d9e20662 100644
--- a/include/linux/raid/md_p.h
+++ b/include/linux/raid/md_p.h
@@ -245,10 +245,16 @@ struct mdp_superblock_1 {
__u8 device_uuid[16]; /* user-space setable, ignored by kernel */
__u8 devflags; /* per-device flags. Only one defined...*/
#define WriteMostly1 1 /* mask for writemostly flag in above */
- __u8 pad2[64-57]; /* set to 0 when writing */
+ /* Bad block log. If there are any bad blocks the feature flag is set.
+ * If offset and size are non-zero, that space is reserved and available
+ */
+ __u8 bblog_shift; /* shift from sectors to block size */
+ __le16 bblog_size; /* number of sectors reserved for list */
+ __le32 bblog_offset; /* sector offset from superblock to bblog,
+ * signed - not unsigned */
/* array state information - 64 bytes */
- __le64 utime; /* 40 bits second, 24 btes microseconds */
+ __le64 utime; /* 40 bits second, 24 bits microseconds */
__le64 events; /* incremented when superblock updated */
__le64 resync_offset; /* data before this offset (from data_offset) known to be in sync */
__le32 sb_csum; /* checksum up to devs[max_dev] */
@@ -270,8 +276,8 @@ struct mdp_superblock_1 {
* must be honoured
*/
#define MD_FEATURE_RESHAPE_ACTIVE 4
+#define MD_FEATURE_BAD_BLOCKS 8 /* badblock list is not empty */
-#define MD_FEATURE_ALL (1|2|4)
+#define MD_FEATURE_ALL (1|2|4|8)
#endif
-