diff options
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/bitmap.h | 11 | ||||
| -rw-r--r-- | include/linux/raid/md.h | 5 | ||||
| -rw-r--r-- | include/linux/raid/md_k.h | 40 | ||||
| -rw-r--r-- | include/linux/raid/raid1.h | 4 | ||||
| -rw-r--r-- | include/linux/raid/raid5.h | 2 |
5 files changed, 52 insertions, 10 deletions
diff --git a/include/linux/raid/bitmap.h b/include/linux/raid/bitmap.h index 9de99198caf..899437802ae 100644 --- a/include/linux/raid/bitmap.h +++ b/include/linux/raid/bitmap.h @@ -6,7 +6,13 @@ #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_MINOR 39 /* @@ -133,7 +139,8 @@ typedef __u16 bitmap_counter_t; /* use these for bitmap->flags and bitmap->sb->state bit-fields */ enum bitmap_state { BITMAP_ACTIVE = 0x001, /* the bitmap is in use */ - BITMAP_STALE = 0x002 /* the bitmap file is out of date or had -EIO */ + BITMAP_STALE = 0x002, /* the bitmap file is out of date or had -EIO */ + BITMAP_HOSTENDIAN = 0x8000, }; /* the superblock at the front of the bitmap file -- little endian */ diff --git a/include/linux/raid/md.h b/include/linux/raid/md.h index ffa316ce4dc..13e7c4b6236 100644 --- a/include/linux/raid/md.h +++ b/include/linux/raid/md.h @@ -66,8 +66,10 @@ * and major_version/minor_version accordingly * >=2 means that Internal bitmaps are supported by setting MD_SB_BITMAP_PRESENT * in the super status byte + * >=3 means that bitmap superblock version 4 is supported, which uses + * little-ending representation rather than host-endian */ -#define MD_PATCHLEVEL_VERSION 2 +#define MD_PATCHLEVEL_VERSION 3 extern int register_md_personality (int p_num, mdk_personality_t *p); extern int unregister_md_personality (int p_num); @@ -87,6 +89,7 @@ extern void md_print_devices (void); extern void md_super_write(mddev_t *mddev, mdk_rdev_t *rdev, sector_t sector, int size, struct page *page); +extern void md_super_wait(mddev_t *mddev); extern int sync_page_io(struct block_device *bdev, sector_t sector, int size, struct page *page, int rw); diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index ebce949b144..46629a275ba 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -105,6 +105,8 @@ struct mdk_rdev_s int sb_size; /* bytes in the superblock */ int preferred_minor; /* autorun support */ + struct kobject kobj; + /* A device can be in one of three states based on two flags: * Not working: faulty==1 in_sync==0 * Fully working: faulty==0 in_sync==1 @@ -115,11 +117,12 @@ struct mdk_rdev_s * It can never have faulty==1, in_sync==1 * This reduces the burden of testing multiple flags in many cases */ - int faulty; /* if faulty do not issue IO requests */ - int in_sync; /* device is a full member of the array */ - unsigned long flags; /* Should include faulty and in_sync here. */ + unsigned long flags; +#define Faulty 1 /* device is known to have a fault */ +#define In_sync 2 /* device is in_sync with rest of array */ #define WriteMostly 4 /* Avoid reading if at all possible */ +#define BarriersNotsupp 5 /* BIO_RW_BARRIER is not supported */ int desc_nr; /* descriptor index in the superblock */ int raid_disk; /* role of device in array */ @@ -132,6 +135,9 @@ struct mdk_rdev_s * only maintained for arrays that * support hot removal */ + atomic_t read_errors; /* number of consecutive read errors that + * we have tried to ignore. + */ }; typedef struct mdk_personality_s mdk_personality_t; @@ -148,6 +154,8 @@ struct mddev_s struct gendisk *gendisk; + struct kobject kobj; + /* Superblock information */ int major_version, minor_version, @@ -171,6 +179,10 @@ struct mddev_s sector_t resync_mark_cnt;/* blocks written at resync_mark */ sector_t resync_max_sectors; /* may be set by personality */ + + sector_t resync_mismatches; /* count of sectors where + * parity/replica mismatch found + */ /* recovery/resync flags * NEEDED: we might need to start a resync/recover * RUNNING: a thread is running, or about to be started @@ -178,6 +190,8 @@ struct mddev_s * ERR: and IO error was detected - abort the resync/recovery * INTR: someone requested a (clean) early abort. * DONE: thread is done and is waiting to be reaped + * REQUEST: user-space has requested a sync (used with SYNC) + * CHECK: user-space request for for check-only, no repair */ #define MD_RECOVERY_RUNNING 0 #define MD_RECOVERY_SYNC 1 @@ -185,6 +199,8 @@ struct mddev_s #define MD_RECOVERY_INTR 3 #define MD_RECOVERY_DONE 4 #define MD_RECOVERY_NEEDED 5 +#define MD_RECOVERY_REQUESTED 6 +#define MD_RECOVERY_CHECK 7 unsigned long recovery; int in_sync; /* know to not need resync */ @@ -195,6 +211,13 @@ struct mddev_s int degraded; /* whether md should consider * adding a spare */ + int barriers_work; /* initialised to true, cleared as soon + * as a barrier request to slave + * fails. Only supported + */ + struct bio *biolist; /* bios that need to be retried + * because BIO_RW_BARRIER is not supported + */ atomic_t recovery_active; /* blocks scheduled, but not written */ wait_queue_head_t recovery_wait; @@ -232,7 +255,7 @@ struct mddev_s static inline void rdev_dec_pending(mdk_rdev_t *rdev, mddev_t *mddev) { - int faulty = rdev->faulty; + int faulty = test_bit(Faulty, &rdev->flags); if (atomic_dec_and_test(&rdev->nr_pending) && faulty) set_bit(MD_RECOVERY_NEEDED, &mddev->recovery); } @@ -270,6 +293,13 @@ struct mdk_personality_s }; +struct md_sysfs_entry { + struct attribute attr; + ssize_t (*show)(mddev_t *, char *); + ssize_t (*store)(mddev_t *, const char *, size_t); +}; + + static inline char * mdname (mddev_t * mddev) { return mddev->gendisk ? mddev->gendisk->disk_name : "mdX"; @@ -304,10 +334,8 @@ typedef struct mdk_thread_s { mddev_t *mddev; wait_queue_head_t wqueue; unsigned long flags; - struct completion *event; struct task_struct *tsk; unsigned long timeout; - const char *name; } mdk_thread_t; #define THREAD_WAKEUP 0 diff --git a/include/linux/raid/raid1.h b/include/linux/raid/raid1.h index 60e19b66754..292b98f2b40 100644 --- a/include/linux/raid/raid1.h +++ b/include/linux/raid/raid1.h @@ -110,7 +110,9 @@ struct r1bio_s { #define R1BIO_Uptodate 0 #define R1BIO_IsSync 1 #define R1BIO_Degraded 2 -#define R1BIO_BehindIO 3 +#define R1BIO_BehindIO 3 +#define R1BIO_Barrier 4 +#define R1BIO_BarrierRetry 5 /* For write-behind requests, we call bi_end_io when * the last non-write-behind device completes, providing * any write was successful. Otherwise we call when diff --git a/include/linux/raid/raid5.h b/include/linux/raid/raid5.h index 176fc653c28..f025ba6fb14 100644 --- a/include/linux/raid/raid5.h +++ b/include/linux/raid/raid5.h @@ -154,6 +154,8 @@ struct stripe_head { #define R5_Wantwrite 5 #define R5_Syncio 6 /* this io need to be accounted as resync io */ #define R5_Overlap 7 /* There is a pending overlapping request on this block */ +#define R5_ReadError 8 /* seen a read error here recently */ +#define R5_ReWrite 9 /* have tried to over-write the readerror */ /* * Write method |