diff options
| author | Neil Brown <neilb@cse.unsw.edu.au> | 2004-11-10 21:49:10 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@ppc970.osdl.org> | 2004-11-10 21:49:10 -0800 |
| commit | f5711563c37aa28daf75bf2ba99fbea2d5d52f1e (patch) | |
| tree | 33362b71875ae8cd88c8f8add8a857bb369dd9a9 /include/linux/raid | |
| parent | 854d7a6fa60eaa67ef26fb0559b01a2cfb2fbcae (diff) | |
[PATCH] md: "Faulty" personality
The 'faulty' personality provides a layer over any block device in which
errors may be synthesised.
A variety of errors are possible including transient and persistent read
and write errors, and read errors that persist until the next write.
There error mode can be changed on a live array.
Accessing this personality requires mdadm 2.8.0 or later.
Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/raid')
| -rw-r--r-- | include/linux/raid/md_k.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/linux/raid/md_k.h b/include/linux/raid/md_k.h index 945346ec2c10..c9a0d4013be7 100644 --- a/include/linux/raid/md_k.h +++ b/include/linux/raid/md_k.h @@ -25,10 +25,12 @@ #define MULTIPATH 7UL #define RAID6 8UL #define RAID10 9UL -#define MAX_PERSONALITY 10UL +#define FAULTY 10UL +#define MAX_PERSONALITY 11UL #define LEVEL_MULTIPATH (-4) #define LEVEL_LINEAR (-1) +#define LEVEL_FAULTY (-5) #define MaxSector (~(sector_t)0) #define MD_THREAD_NAME_MAX 14 @@ -36,6 +38,7 @@ static inline int pers_to_level (int pers) { switch (pers) { + case FAULTY: return LEVEL_FAULTY; case MULTIPATH: return LEVEL_MULTIPATH; case HSM: return -3; case TRANSLUCENT: return -2; @@ -53,6 +56,7 @@ static inline int pers_to_level (int pers) static inline int level_to_pers (int level) { switch (level) { + case LEVEL_FAULTY: return FAULTY; case LEVEL_MULTIPATH: return MULTIPATH; case -3: return HSM; case -2: return TRANSLUCENT; @@ -290,6 +294,7 @@ struct mdk_personality_s int (*sync_request)(mddev_t *mddev, sector_t sector_nr, int go_faster); int (*resize) (mddev_t *mddev, sector_t sectors); int (*reshape) (mddev_t *mddev, int raid_disks); + int (*reconfig) (mddev_t *mddev, int layout, int chunk_size); }; |