diff options
Diffstat (limited to 'mdadm.h')
-rw-r--r-- | mdadm.h | 56 |
1 files changed, 56 insertions, 0 deletions
@@ -178,6 +178,54 @@ extern struct mdstat_ent *mdstat_read(int hold, int start); extern void free_mdstat(struct mdstat_ent *ms); extern void mdstat_wait(int seconds); +/* Data structure for holding info read from sysfs */ +struct sysdev { + char name[20]; + int role; + int major, minor; + unsigned long long offset, size; + int state; + int errors; + struct sysdev *next; +}; +struct sysarray { + char name[20]; + struct sysdev *devs; + int chunk; + unsigned long long component_size; + int layout; + int level; + int spares; +}; +/* various details can be requested */ +#define GET_LEVEL 1 +#define GET_LAYOUT 2 +#define GET_COMPONENT 4 +#define GET_CHUNK 8 + +#define GET_DEVS 1024 /* gets role, major, minor */ +#define GET_OFFSET 2048 +#define GET_SIZE 4096 +#define GET_STATE 8192 +#define GET_ERROR 16384 + +/* If fd >= 0, get the array it is open on, + * else use devnum. >=0 -> major9. <0..... + */ +extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options); +extern int sysfs_set_str(struct sysarray *sra, struct sysdev *dev, + char *name, char *val); +extern int sysfs_set_num(struct sysarray *sra, struct sysdev *dev, + char *name, unsigned long long val); +extern int sysfs_get_ll(struct sysarray *sra, struct sysdev *dev, + char *name, unsigned long long *val); + + +extern int save_stripes(int *source, unsigned long long *offsets, + int raid_disks, int chunk_size, int level, int layout, + int nwrites, int *dest, + unsigned long long start, unsigned long long length); + #ifndef Sendmail #define Sendmail "/usr/lib/sendmail -t" #endif @@ -251,6 +299,9 @@ extern int Manage_subdevs(char *devname, int fd, mddev_dev_t devlist, int verbose); extern int Grow_Add_device(char *devname, int fd, char *newdev); extern int Grow_addbitmap(char *devname, int fd, char *file, int chunk, int delay, int write_behind, int force); +extern int Grow_reshape(char *devname, int fd, int quiet, + long long size, + int level, int layout, int chunksize, int raid_disks); extern int Assemble(struct supertype *st, char *mddev, int mdfd, @@ -367,3 +418,8 @@ extern int open_mddev(char *dev, int autof); #define makedev(M,m) (((M)<<8) | (m)) #endif +/* for raid5 */ +#define ALGORITHM_LEFT_ASYMMETRIC 0 +#define ALGORITHM_RIGHT_ASYMMETRIC 1 +#define ALGORITHM_LEFT_SYMMETRIC 2 +#define ALGORITHM_RIGHT_SYMMETRIC 3 |