X-Git-Url: http://git.ipfire.org/?p=thirdparty%2Fmdadm.git;a=blobdiff_plain;f=mdadm.h;h=f7fd53e5cde6be193733c8e39a0a86aa709e1d69;hp=ba9174ea8da6e673db277cf3cad4fe072bdfb090;hb=e8a70c89585ddca2bcb4160808f64506c64df13b;hpb=f94d52f43ea70665f0293de0fe8940d64931e893 diff --git a/mdadm.h b/mdadm.h index ba9174ea..f7fd53e5 100644 --- a/mdadm.h +++ b/mdadm.h @@ -149,6 +149,7 @@ struct mdinfo { int reshape_active; unsigned long long reshape_progress; unsigned long long resync_start; + unsigned long safe_mode_delay; /* ms delay to mark clean */ int new_level, delta_disks, new_layout, new_chunk; int errors; int cache_size; /* size of raid456 stripe cache*/ @@ -171,6 +172,7 @@ struct mdinfo { #define DS_SPARE 8 #define DS_BLOCKED 16 #define DS_REMOVE 1024 + #define DS_UNBLOCK 2048 int prev_state, curr_state, next_state; }; @@ -222,6 +224,7 @@ enum special_options { AutoHomeHost, Symlinks, AutoDetect, + Waitclean, }; /* structures read from config file */ @@ -256,6 +259,13 @@ typedef struct mddev_ident_s { char *bitmap_file; int bitmap_fd; + char *container; /* /dev/whatever name of container, or + * uuid of container. You would expect + * this to be the 'devname' or UUID + * of some other entry. + */ + char *member; /* subarray within a container */ + struct mddev_ident_s *next; } *mddev_ident_t; @@ -265,9 +275,11 @@ typedef struct mddev_dev_s { char disposition; /* 'a' for add, 'r' for remove, 'f' for fail. * Not set for names read from .config */ - char writemostly; + char writemostly; /* 1 for 'set writemostly', 2 for 'clear writemostly' */ char re_add; char used; /* set when used */ + struct mdinfo *content; /* If devname is a container, this might list + * the remaining member arrays. */ struct mddev_dev_s *next; } *mddev_dev_t; @@ -303,17 +315,22 @@ struct map_ent { int devnum; char metadata[20]; int uuid[4]; + int bad; char *path; }; extern int map_update(struct map_ent **mpp, int devnum, char *metadata, int uuid[4], char *path); extern struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4]); +extern struct map_ent *map_by_devnum(struct map_ent **map, int devnum); +extern struct map_ent *map_by_name(struct map_ent **map, char *name); extern void map_read(struct map_ent **melp); extern int map_write(struct map_ent *mel); extern void map_delete(struct map_ent **mapp, int devnum); extern void map_free(struct map_ent *map); extern void map_add(struct map_ent **melp, int devnum, char *metadata, int uuid[4], char *path); +extern int map_lock(struct map_ent **melp); +extern void map_unlock(struct map_ent **melp); /* various details can be requested */ #define GET_LEVEL 1 @@ -324,6 +341,8 @@ extern void map_add(struct map_ent **melp, #define GET_MISMATCH 32 #define GET_VERSION 64 #define GET_DISKS 128 +#define GET_DEGRADED 256 +#define GET_SAFEMODE 512 #define GET_DEVS 1024 /* gets role, major, minor */ #define GET_OFFSET 2048 @@ -335,20 +354,24 @@ extern void map_add(struct map_ent **melp, * else use devnum. >=0 -> major9. <0..... */ extern int sysfs_open(int devnum, char *devname, char *attr); +extern void sysfs_init(struct mdinfo *mdi, int fd, int devnum); extern void sysfs_free(struct mdinfo *sra); extern struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options); +extern int sysfs_attr_match(const char *attr, const char *str); +extern int sysfs_match_word(const char *word, char **list); extern int sysfs_set_str(struct mdinfo *sra, struct mdinfo *dev, char *name, char *val); extern int sysfs_set_num(struct mdinfo *sra, struct mdinfo *dev, char *name, unsigned long long val); +extern int sysfs_uevent(struct mdinfo *sra, char *event); 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_set_safemode(struct mdinfo *sra, unsigned long ms); +extern int sysfs_set_array(struct mdinfo *info, int vers); extern int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd); -extern int sysfs_disk_to_sg(int fd); extern int sysfs_disk_to_scsi_id(int fd, __u32 *id); extern int sysfs_unique_holder(int devnum, long rdev); +extern int load_sys(char *path, char *buf); extern int save_stripes(int *source, unsigned long long *offsets, @@ -438,8 +461,7 @@ extern struct superswitch { void (*getinfo_super)(struct supertype *st, struct mdinfo *info); /* Check if the given metadata is flagged as belonging to "this" - * host. For arrays that don't determine a minor-number, this - * can always be true (??) + * host. 0 for 'no', 1 for 'yes', -1 for "Don't record homehost" */ int (*match_home)(struct supertype *st, char *homehost); @@ -514,7 +536,8 @@ extern struct superswitch { int (*validate_geometry)(struct supertype *st, int level, int layout, int raiddisks, int chunk, unsigned long long size, - char *subdev, unsigned long long *freesize); + char *subdev, unsigned long long *freesize, + int verbose); struct mdinfo *(*container_content)(struct supertype *st); @@ -524,12 +547,16 @@ extern struct superswitch { /* 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 + * and 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. + * If 'consistent' is '2', then the array can mark it dirty if a + * resync/recovery/whatever is required, or leave it clean if not. + * Return value is 0 dirty (not consistent) and 1 if clean. + * it is only really important if consistent is passed in as '2'. */ - void (*set_array_state)(struct active_array *a, int consistent); + int (*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. @@ -542,6 +569,8 @@ extern struct superswitch { void (*sync_metadata)(struct supertype *st); void (*process_update)(struct supertype *st, struct metadata_update *update); + void (*prepare_update)(struct supertype *st, + struct metadata_update *update); /* activate_spare will check if the array is degraded and, if it * is, try to find some spare space in the container. @@ -559,12 +588,25 @@ extern struct superswitch { extern struct superswitch super_imsm; +struct metadata_update { + int len; + char *buf; + void *space; /* allocated space that monitor will use */ + struct metadata_update *next; +}; + /* A supertype holds a particular collection of metadata. * It identifies the metadata type by the superswitch, and the particular * sub-version of that metadata type. * metadata read in or created is stored in 'sb' and 'info'. * There are also fields used by mdmon to track containers. * + * A supertype may refer to: + * Just an array, possibly in a container + * A container, not identifying any particular array + * Info read from just one device, not yet fully describing the array/container. + * + * * A supertype is created by: * super_by_fd * guess_super @@ -578,18 +620,20 @@ struct supertype { char subarray[32]; /* name of array inside container */ void *sb; void *info; + int loaded_container; /* Set if load_super found a container, + * not just one device */ + + struct metadata_update *updates; + struct metadata_update **update_tail; /* 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; @@ -601,6 +645,7 @@ extern struct supertype *dup_super(struct supertype *st); extern int get_dev_size(int fd, char *dname, unsigned long long *sizep); extern void get_one_disk(int mdfd, mdu_array_info_t *ainf, mdu_disk_info_t *disk); +void wait_for(char *dev); #if __GNUC__ < 3 struct stat64; @@ -656,25 +701,25 @@ extern int Grow_restart(struct supertype *st, struct mdinfo *info, int *fdlist, int cnt, char *backup_file); -extern int Assemble(struct supertype *st, char *mddev, int mdfd, +extern int Assemble(struct supertype *st, char *mddev, mddev_ident_t ident, mddev_dev_t devlist, char *backup_file, int readonly, int runstop, char *update, char *homehost, int verbose, int force); -extern int Build(char *mddev, int mdfd, int chunk, int level, int layout, - int raiddisks, - mddev_dev_t devlist, int assume_clean, - char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose); +extern int Build(char *mddev, int chunk, int level, int layout, + int raiddisks, mddev_dev_t devlist, int assume_clean, + char *bitmap_file, int bitmap_chunk, int write_behind, + int delay, int verbose, int autof); -extern int Create(struct supertype *st, char *mddev, int mdfd, +extern int Create(struct supertype *st, char *mddev, int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks, char *name, char *homehost, int *uuid, int subdevs, mddev_dev_t devlist, int runstop, int verbose, int force, int assume_clean, - char *bitmap_file, int bitmap_chunk, int write_behind, int delay); + char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int autof); extern int Detail(char *dev, int brief, int export, int test, char *homehost); extern int Query(char *dev); @@ -687,11 +732,13 @@ extern int Monitor(mddev_dev_t devlist, extern int Kill(char *dev, int force, int quiet, int noexcl); extern int Wait(char *dev); +extern int WaitClean(char *dev, int verbose); extern int Incremental(char *devname, int verbose, int runstop, struct supertype *st, char *homehost, int autof); extern int Incremental_container(struct supertype *st, char *devname, - int verbose, int runstop, int autof); + int verbose, int runstop, int autof, + int trustworthy); extern void RebuildMap(void); extern int IncrementalScan(int verbose); @@ -702,6 +749,7 @@ extern int CreateBitmap(char *filename, int force, char uuid[16], int major); extern int ExamineBitmap(char *filename, int brief, struct supertype *st); extern int bitmap_update_uuid(int fd, int *uuid, int swap); +extern unsigned long bitmap_sectors(struct bitmap_super_s *bsb); extern int md_get_version(int fd); extern int get_linux_version(void); @@ -712,8 +760,10 @@ 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(int devnum); extern int open_dev_excl(int devnum); extern int is_standard(char *dev, int *nump); +extern int same_dev(char *one, char *two); extern int parse_auto(char *str, char *msg, int config); extern mddev_ident_t conf_get_ident(char *dev); @@ -730,8 +780,11 @@ extern char *conf_word(FILE *file, int allow_key); extern void free_line(char *line); extern int match_oneof(char *devices, char *devname); extern void uuid_from_super(int uuid[4], mdp_super_t *super); +extern const int uuid_match_any[4]; extern int same_uuid(int a[4], int b[4], int swapuuid); extern void copy_uuid(void *a, int b[4], int swapuuid); +extern char *fname_from_uuid(struct supertype *st, + struct mdinfo *info, char *buf, char sep); extern unsigned long calc_csum(void *super, int bytes); extern int enough(int level, int raid_disks, int layout, int clean, char *avail, int avail_disks); @@ -740,10 +793,19 @@ extern unsigned long long get_component_size(int fd); extern void remove_partitions(int fd); extern unsigned long long calc_array_size(int level, int raid_disks, int layout, int chunksize, unsigned long long devsize); +extern int flush_metadata_updates(struct supertype *st); +extern void append_metadata_update(struct supertype *st, void *buf, int len); +extern int assemble_container_content(struct supertype *st, int mdfd, + struct mdinfo *content, int runstop, + char *chosen_name, int verbose); +extern int add_disk(int mdfd, struct supertype *st, + struct mdinfo *sra, struct mdinfo *info); +extern int set_array_info(int mdfd, struct supertype *st, struct mdinfo *info); extern char *human_size(long long bytes); -char *human_size_brief(long long bytes); +extern char *human_size_brief(long long bytes); +extern void print_r10_layout(int layout); #define NoMdDev (1<<23) extern int find_free_devnum(int use_partitions); @@ -753,15 +815,23 @@ extern char *get_md_name(int dev); extern char DefaultConfFile[]; -extern int open_mddev(char *dev, int autof); -extern int open_mddev_devnum(char *devname, int devnum, char *name, - char *chosen_name, int parts); +extern int create_mddev(char *dev, char *name, int autof, int trustworthy, + char *chosen); +/* values for 'trustworthy' */ +#define LOCAL 1 +#define FOREIGN 2 +#define METADATA 3 +extern int open_mddev(char *dev, int report_errors); extern int open_container(int fd); extern int mdmon_running(int devnum); extern int signal_mdmon(int devnum); +extern int check_env(char *name); +extern int start_mdmon(int devnum); extern char *devnum2devname(int num); +extern int devname2devnum(char *name); +extern int stat2devnum(struct stat *st); extern int fd2devnum(int fd); static inline int dev2major(int d) @@ -779,6 +849,31 @@ static inline int dev2minor(int d) return (-1-d) << MdpMinorShift; } +static inline int ROUND_UP(int a, int base) +{ + return ((a+base-1)/base)*base; +} + +static inline int is_subarray(char *vers) +{ + /* The version string for a 'subarray' (an array in a container) + * is + * /containername/componentname for normal read-write arrays + * -containername/componentname for read-only arrays. + * containername is e.g. md0, md_d1 + * componentname is dependant on the metadata. e.g. '1' 'S1' ... + */ + return (*vers == '/' || *vers == '-'); +} + +#ifdef DEBUG +#define dprintf(fmt, arg...) \ + fprintf(stderr, fmt, ##arg) +#else +#define dprintf(fmt, arg...) \ + ({ if (0) fprintf(stderr, fmt, ##arg); 0; }) +#endif + #define LEVEL_MULTIPATH (-4) #define LEVEL_LINEAR (-1) #define LEVEL_FAULTY (-5)