#define DEFAULT_BITMAP_DELAY 5
#define DEFAULT_MAX_WRITE_BEHIND 256
+/* MAP_DIR should be somewhere that persists across the pivotroot
+ * from early boot to late boot.
+ * Currently /dev seems to be the only option on most distros.
+ */
+#ifndef MAP_DIR
+#define MAP_DIR "/dev/.mdadm"
+#endif /* MAP_DIR */
+/* MAP_FILE is what we name the map file we put in MAP_DIR, in case you
+ * want something other than the default of "map"
+ */
+#ifndef MAP_FILE
+#define MAP_FILE "map"
+#endif /* MAP_FILE */
+/* MDMON_DIR is where pid and socket files used for communicating
+ * with mdmon normally live. It *should* be /var/run, but when
+ * mdmon is needed at early boot then it needs to write there prior
+ * to /var/run being mounted read/write, and it also then needs to
+ * persist beyond when /var/run is mounter read-only. So, to be
+ * safe, the default is somewhere that is read/write early in the
+ * boot process and stays up as long as possible during shutdown.
+ */
+#ifndef MDMON_DIR
+#define MDMON_DIR "/dev/.mdadm/"
+#endif /* MDMON_DIR */
+
#include "md_u.h"
#include "md_p.h"
#include "bitmap.h"
#endif /* __KLIBC__ */
+/*
+ * min()/max()/clamp() macros that also do
+ * strict type-checking.. See the
+ * "unnecessary" pointer comparison.
+ */
+#define min(x, y) ({ \
+ typeof(x) _min1 = (x); \
+ typeof(y) _min2 = (y); \
+ (void) (&_min1 == &_min2); \
+ _min1 < _min2 ? _min1 : _min2; })
+
+#define max(x, y) ({ \
+ typeof(x) _max1 = (x); \
+ typeof(y) _max2 = (y); \
+ (void) (&_max1 == &_max2); \
+ _max1 > _max2 ? _max1 : _max2; })
/* general information that might be extracted from a superblock */
struct mdinfo {
*/
int reshape_active;
unsigned long long reshape_progress;
- unsigned long long resync_start;
+ union {
+ unsigned long long resync_start; /* per-array resync position */
+ unsigned long long recovery_start; /* per-device rebuild position */
+ #define MaxSector (~0ULL) /* resync/recovery complete position */
+ };
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*/
int mismatch_cnt;
char text_version[50];
+ void *update_private; /* for passing metadata-format
+ * specific update data
+ * between successive calls to
+ * update_super()
+ */
int container_member; /* for assembling external-metatdata arrays
* This is to be used internally by metadata
* handler only */
-
+ int container_enough; /* flag external handlers can set to
+ * indicate that subarrays have not enough (-1),
+ * enough to start (0), or all expected disks (1) */
char sys_name[20];
struct mdinfo *devs;
struct mdinfo *next;
/* Device info for mdmon: */
+ int recovery_fd;
int state_fd;
#define DS_FAULTY 1
#define DS_INSYNC 2
/* for option that don't have short equivilents, we assign arbitrary
* small numbers. '1' means an undecorated option, so we start at '2'.
+ * (note we must stop before we get to 65 i.e. 'A')
*/
enum special_options {
AssumeClean = 2,
ReAdd,
NoDegraded,
Sparc22,
- BackupFile,
+ BackupFile, /* 8 */
HomeHost,
AutoHomeHost,
Symlinks,
AutoDetect,
Waitclean,
DetailPlatform,
+ KillSubarray,
+ UpdateSubarray, /* 16 */
};
/* structures read from config file */
char *member; /* subarray within a container */
struct mddev_ident_s *next;
+ union {
+ /* fields needed by different users of this structure */
+ int assembled; /* set when assembly succeeds */
+ };
} *mddev_ident_t;
/* List of device names - wildcards expanded */
int raid_disks;
int chunk_size;
char * metadata_version;
+ struct dev_member {
+ char *name;
+ struct dev_member *next;
+ } *members;
struct mdstat_ent *next;
};
extern void mdstat_wait(int seconds);
extern void mdstat_wait_fd(int fd, const sigset_t *sigmask);
extern int mddev_busy(int devnum);
+extern struct mdstat_ent *mdstat_by_component(char *name);
struct map_ent {
struct map_ent *next;
};
extern int map_update(struct map_ent **mpp, int devnum, char *metadata,
int uuid[4], char *path);
+extern void map_remove(struct map_ent **map, int devnum);
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);
GET_SIZE = (1 << 12),
GET_STATE = (1 << 13),
GET_ERROR = (1 << 14),
- SKIP_GONE_DEVS = (1 << 15),
};
/* If fd >= 0, get the array it is open on,
char *name, char *val, int size);
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,
- int in_sync);
+extern int sysfs_add_disk(struct mdinfo *sra, struct mdinfo *sd, int resume);
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);
struct mdinfo *(*container_content)(struct supertype *st);
/* Allow a metadata handler to override mdadm's default layouts */
int (*default_layout)(int level); /* optional */
+ /* query the supertype for default chunk size */
+ int (*default_chunk)(struct supertype *st); /* optional */
+ /* Permit subarray's to be deleted from inactive containers */
+ int (*kill_subarray)(struct supertype *st); /* optional */
+ /* Permit subarray's to be modified */
+ int (*update_subarray)(struct supertype *st, char *update, mddev_ident_t ident); /* optional */
/* for mdmon */
int (*open_new)(struct supertype *c, struct active_array *a,
extern int Manage_runstop(char *devname, int fd, int runstop, int quiet);
extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
extern int Manage_subdevs(char *devname, int fd,
- mddev_dev_t devlist, int verbose);
+ mddev_dev_t devlist, int verbose, int test);
extern int autodetect(void);
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 Monitor(mddev_dev_t devlist,
char *mailaddr, char *alert_cmd,
int period, int daemonise, int scan, int oneshot,
- int dosyslog, int test, char *pidfile);
+ int dosyslog, int test, char *pidfile, int increments);
-extern int Kill(char *dev, int force, int quiet, int noexcl);
+extern int Kill(char *dev, struct supertype *st, int force, int quiet, int noexcl);
+extern int Kill_subarray(char *dev, char *subarray, int quiet);
+extern int Update_subarray(char *dev, char *subarray, char *update, mddev_ident_t ident, int quiet);
extern int Wait(char *dev);
-extern int WaitClean(char *dev, int verbose);
+extern int WaitClean(char *dev, int sock, int verbose);
extern int Incremental(char *devname, int verbose, int runstop,
struct supertype *st, char *homehost, int require_homehost,
int trustworthy);
extern void RebuildMap(void);
extern int IncrementalScan(int verbose);
-
+extern int IncrementalRemove(char *devname, int verbose);
extern int CreateBitmap(char *filename, int force, char uuid[16],
unsigned long chunksize, unsigned long daemon_sleep,
unsigned long write_behind,
extern int check_ext2(int fd, char *name);
extern int check_reiser(int fd, char *name);
extern int check_raid(int fd, char *name);
+extern int check_partitions(int fd, char *dname, unsigned long long freesize);
extern int get_mdp_major(void);
extern int dev_open(char *dev, int flags);
extern mddev_ident_t conf_get_ident(char *dev);
extern mddev_dev_t conf_get_devs(void);
extern int conf_test_dev(char *devname);
-extern int conf_test_metadata(const char *version);
+extern int conf_test_metadata(const char *version, int is_homehost);
extern struct createinfo *conf_get_create_info(void);
extern void set_conffile(char *file);
extern char *conf_get_mailaddr(void);
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(int id[4], int swap, char *buf, char sep);
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 ask(char *mesg);
extern unsigned long long get_component_size(int fd);
extern void remove_partitions(int fd);
+extern int test_partition(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 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);
+unsigned long long min_recovery_start(struct mdinfo *array);
extern char *human_size(long long bytes);
extern char *human_size_brief(long long bytes);
char *chosen);
/* values for 'trustworthy' */
#define LOCAL 1
+#define LOCAL_ANY 10
#define FOREIGN 2
#define METADATA 3
extern int open_mddev(char *dev, int report_errors);
extern int open_container(int fd);
+extern int is_container_member(struct mdstat_ent *ent, char *devname);
+extern int is_subarray_active(char *subarray, char *devname);
+int is_container_active(char *devname);
+extern int open_subarray(char *dev, struct supertype *st, int quiet);
+extern struct superswitch *version_to_superswitch(char *vers);
extern int mdmon_running(int devnum);
-extern int signal_mdmon(int devnum);
+extern int mdmon_pid(int devnum);
extern int check_env(char *name);
extern __u32 random32(void);
extern int start_mdmon(int devnum);
#define ALGORITHM_PARITY_0_6 20
#define ALGORITHM_PARITY_N_6 ALGORITHM_PARITY_N
+/* Define PATH_MAX in case we don't use glibc or standard library does
+ * not have PATH_MAX defined. Assume max path length is 4K characters.
+ */
+#ifndef PATH_MAX
+#define PATH_MAX 4096
+#endif
+
projects / thirdparty / mdadm.git / blobdiff