X-Git-Url: http://git.ipfire.org/?a=blobdiff_plain;f=mdadm.h;h=b97cd51be8f8ece6f97cb338e8b0230ec1d8c8d3;hb=57632f4afb3588465454187ca6ab66ffb200b677;hp=dae73cce38b1cfc2f2b75d53d3d8ab7468dfa41a;hpb=2f6079dc96180335fdb56d0b89e462e903abbb50;p=thirdparty%2Fmdadm.git diff --git a/mdadm.h b/mdadm.h index dae73cce..b97cd51b 100644 --- a/mdadm.h +++ b/mdadm.h @@ -76,6 +76,7 @@ extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence)); #include "md_u.h" #include "md_p.h" #include "bitmap.h" +#include "msg.h" #include /* Redhat don't like to #include , and @@ -147,15 +148,31 @@ struct mdinfo { */ int reshape_active; unsigned long long reshape_progress; + unsigned long long resync_start; int new_level, delta_disks, new_layout, new_chunk; int errors; int cache_size; /* size of raid456 stripe cache*/ int mismatch_cnt; char text_version[50]; + int container_member; /* for assembling external-metatdata arrays + * This is to be used internally by metadata + * handler only */ + char sys_name[20]; struct mdinfo *devs; struct mdinfo *next; + + /* Device info for mdmon: */ + int state_fd; + #define DS_FAULTY 1 + #define DS_INSYNC 2 + #define DS_WRITE_MOSTLY 4 + #define DS_SPARE 8 + #define DS_BLOCKED 16 + #define DS_REMOVE 1024 + int prev_state, curr_state, next_state; + }; struct createinfo { @@ -268,12 +285,17 @@ struct mdstat_ent { char *pattern; /* U or up, _ for down */ int percent; /* -1 if no resync */ int resync; /* 1 if resync, 0 if recovery */ + int devcnt; + int raid_disks; + int chunk_size; + char * metadata_version; struct mdstat_ent *next; }; extern struct mdstat_ent *mdstat_read(int hold, int start); extern void free_mdstat(struct mdstat_ent *ms); extern void mdstat_wait(int seconds); +extern void mdstat_wait_fd(int fd, const sigset_t *sigmask); extern int mddev_busy(int devnum); struct map_ent { @@ -301,6 +323,7 @@ extern void map_add(struct map_ent **melp, #define GET_CACHE 16 #define GET_MISMATCH 32 #define GET_VERSION 64 +#define GET_DISKS 128 #define GET_DEVS 1024 /* gets role, major, minor */ #define GET_OFFSET 2048 @@ -311,6 +334,7 @@ extern void map_add(struct map_ent **melp, /* If fd >= 0, get the array it is open on, * else use devnum. >=0 -> major9. <0..... */ +extern int sysfs_open(int devnum, char *devname, char *attr); extern void sysfs_free(struct mdinfo *sra); extern struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options); extern int sysfs_set_str(struct mdinfo *sra, struct mdinfo *dev, @@ -321,7 +345,7 @@ extern int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev, char *name, unsigned long long *val); extern int sysfs_set_array(struct mdinfo *sra, struct mdinfo *info); -extern int sysfs_add_disk(struct mdinfo *sra, int fd, struct mdinfo *sd); +extern int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd); @@ -347,6 +371,8 @@ extern mapping_t r5layout[], pers[], modes[], faultylayout[]; extern char *map_dev(int major, int minor, int create); +struct active_array; +struct metadata_update; extern struct superswitch { void (*examine_super)(struct supertype *st, char *homehost); @@ -387,22 +413,64 @@ extern struct superswitch { struct mdinfo *(*container_content)(struct supertype *st); +/* for mdmon */ + int (*open_new)(struct supertype *c, struct active_array *a, + char *inst); + + /* Tell the metadata handler the current state of the array. + * This covers whether it is known to be consistent (no pending writes) + * when how far along a resync is known to have progressed + * (in a->resync_start). + * resync status is really irrelevant if the array is not consistent, + * but some metadata (DDF!) have a place to record the distinction. + */ + void (*set_array_state)(struct active_array *a, int consistent); + + /* When the state of a device might have changed, we call set_disk to + * tell the metadata what the current state is. + * Typically this happens on spare->in_sync and (spare|in_sync)->faulty + * transitions. + * set_disk might be called when the state of the particular disk has + * not in fact changed. + */ + void (*set_disk)(struct active_array *a, int n, int state); + void (*sync_metadata)(struct supertype *st); + void (*process_update)(struct supertype *st, + struct metadata_update *update); + + int major; - char *text_version; int swapuuid; /* true if uuid is bigending rather than hostendian */ int external; } super0, super1, super_ddf, super_ddf_bvd, super_ddf_svd, *superlist[]; +extern struct superswitch super_imsm, super_imsm_raid; + struct supertype { struct superswitch *ss; int minor_version; int max_devs; int container_dev; /* devnum of container */ - int container_member; /* numerical position in container */ void *sb; void *info; + + /* extra stuff used by mdmon */ + struct active_array *arrays; + int sock; /* listen to external programs */ + int mgr_pipe[2]; /* communicate between threads */ + int mon_pipe[2]; /* communicate between threads */ + int devnum; + char *devname; /* e.g. md0. This appears in metadata_verison: + * external:/md0/12 + */ + int devcnt; + char *device_name; /* e.g. /dev/md/whatever */ + + struct mdinfo *devs; + }; +extern struct supertype supertype_container_member; extern struct supertype *super_by_fd(int fd); extern struct supertype *guess_super(int fd); extern struct supertype *dup_super(struct supertype *st); @@ -520,6 +588,7 @@ extern int check_raid(int fd, char *name); extern int get_mdp_major(void); extern int dev_open(char *dev, int flags); +extern int open_dev_excl(int devnum); extern int is_standard(char *dev, int *nump); extern int parse_auto(char *str, char *msg, int config); @@ -565,9 +634,27 @@ extern int open_mddev_devnum(char *devname, int devnum, char *name, char *chosen_name, int parts); extern int open_container(int fd); +extern int mdmon_running(int devnum); +extern int signal_mdmon(int devnum); + extern char *devnum2devname(int num); extern int fd2devnum(int fd); +static inline int dev2major(int d) +{ + if (d >= 0) + return MD_MAJOR; + else + return get_mdp_major(); +} + +static inline int dev2minor(int d) +{ + if (d >= 0) + return d; + return (-1-d) << MdpMinorShift; +} + #define LEVEL_MULTIPATH (-4) #define LEVEL_LINEAR (-1) #define LEVEL_FAULTY (-5)