#define DEFAULT_BITMAP_DELAY 5
#define DEFAULT_MAX_WRITE_BEHIND 256
-#define VAR_RUN "/var/run/mdadm"
-/* ALT_RUN should be somewhere that persists across the pivotroot
+/* MAP_DIR should be somewhere that persists across the pivotroot
* from early boot to late boot.
- * If you don't have /lib/init/rw you might want to use /dev/.something
+ * Currently /dev seems to be the only option on most distros.
*/
-#ifndef ALT_RUN
-#define ALT_RUN "/lib/init/rw/mdadm"
-#endif /* ALT_RUN */
+#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 */
+
+/* FAILED_SLOTS is where to save files storing recent removal of array
+ * member in order to allow future reuse of disk inserted in the same
+ * slot for array recovery
+ */
+#ifndef FAILED_SLOTS_DIR
+#define FAILED_SLOTS_DIR "/dev/.mdadm/failed-slots"
+#endif /* FAILED_SLOTS */
#include "md_u.h"
#include "md_p.h"
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*/
+ unsigned long cache_size; /* size of raid456 stripe cache*/
int mismatch_cnt;
char text_version[50];
void *update_private; /* for passing metadata-format
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;
/* 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 */
+ IncrementalPath,
+ NoSharing
};
/* structures read from config file */
* devices is considered
*/
#define UnSet (0xfffe)
-typedef struct mddev_ident_s {
+struct mddev_ident {
char *devname;
int uuid_set;
int uuid[4];
char name[33];
- unsigned int super_minor;
+ int super_minor;
char *devices; /* comma separated list of device
* names with wild cards
*/
int level;
- unsigned int raid_disks;
- unsigned int spare_disks;
+ int raid_disks;
+ int spare_disks;
struct supertype *st;
int autof; /* 1 for normal, 2 for partitioned */
char *spare_group;
*/
char *member; /* subarray within a container */
- struct mddev_ident_s *next;
-} *mddev_ident_t;
+ struct mddev_ident *next;
+ union {
+ /* fields needed by different users of this structure */
+ int assembled; /* set when assembly succeeds */
+ };
+};
/* List of device names - wildcards expanded */
-typedef struct mddev_dev_s {
+struct mddev_dev {
char *devname;
char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
* Not set for names read from .config
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;
+ struct mddev_dev *next;
+};
typedef struct mapping {
char *name;
char *level;
char *pattern; /* U or up, _ for down */
int percent; /* -1 if no resync */
- int resync; /* 1 if resync, 0 if recovery */
+ int resync; /* 3 if check, 2 if reshape, 1 if resync, 0 if recovery */
int devcnt;
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,
* The particular device should be:
* The last device added by add_to_super
* The device the metadata was loaded from by load_super
+ * If 'map' is present, then it is an array raid_disks long
+ * (raid_disk must already be set and correct) and it is filled
+ * with 1 for slots that are thought to be active and 0 for slots which
+ * appear to be failed/missing.
*/
- void (*getinfo_super)(struct supertype *st, struct mdinfo *info);
-
+ void (*getinfo_super)(struct supertype *st, struct mdinfo *info, char *map);
+ struct mdinfo *(*getinfo_super_disks)(struct supertype *st);
/* Check if the given metadata is flagged as belonging to "this"
* host. 0 for 'no', 1 for 'yes', -1 for "Don't record homehost"
*/
int (*write_init_super)(struct supertype *st);
int (*compare_super)(struct supertype *st, struct supertype *tst);
int (*load_super)(struct supertype *st, int fd, char *devname);
+ int (*load_container)(struct supertype *st, int fd, char *devname);
struct supertype * (*match_metadata_desc)(char *arg);
__u64 (*avail_size)(struct supertype *st, __u64 size);
+ unsigned long long (*min_acceptable_spare_size)(struct supertype *st);
int (*add_internal_bitmap)(struct supertype *st, int *chunkp,
int delay, int write_behind,
unsigned long long size, int may_change, int major);
char *subdev, unsigned long long *freesize,
int verbose);
- struct mdinfo *(*container_content)(struct supertype *st);
+ struct mdinfo *(*container_content)(struct supertype *st, char *subarray);
/* 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 *subarray,
+ char *update, struct mddev_ident *ident); /* optional */
/* for mdmon */
int (*open_new)(struct supertype *c, struct active_array *a,
*/
struct mdinfo *(*activate_spare)(struct active_array *a,
struct metadata_update **updates);
+ /*
+ * Return statically allocated string that represents metadata specific
+ * controller domain of the disk. The domain is used in disk domain
+ * matching functions. Disks belong to the same domain if the they have
+ * the same domain from mdadm.conf and belong the same metadata domain.
+ * Returning NULL or not providing this handler means that metadata
+ * does not distinguish the differences between disks that belong to
+ * different controllers. They are in the domain specified by
+ * configuration file (mdadm.conf).
+ * In case when the metadata has the notion of domains based on disk
+ * it shall return NULL for disks that do not belong to the controller
+ * the supported domains. Such disks will form another domain and won't
+ * be mixed with supported ones.
+ */
+ const char *(*get_disk_controller_domain)(const char *path);
int swapuuid; /* true if uuid is bigending rather than hostendian */
int external;
const char *name; /* canonical metadata name */
-} super0, super1, super_ddf, *superlist[];
+} *superlist[];
-extern struct superswitch super_imsm;
+extern struct superswitch super0, super1;
+extern struct superswitch super_imsm, super_ddf;
+extern struct superswitch mbr, gpt;
struct metadata_update {
int len;
int minor_version;
int max_devs;
int container_dev; /* devnum of container */
- 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;
};
-extern struct supertype *super_by_fd(int fd);
-extern struct supertype *guess_super(int fd);
+extern struct supertype *super_by_fd(int fd, char **subarray);
+enum guess_types { guess_any, guess_array, guess_partitions };
+extern struct supertype *guess_super_type(int fd, enum guess_types guess_type);
+static inline struct supertype *guess_super(int fd) {
+ return guess_super_type(fd, guess_any);
+}
extern struct supertype *dup_super(struct supertype *st);
extern int get_dev_size(int fd, char *dname, unsigned long long *sizep);
+extern int must_be_container(int fd);
+extern int dev_size_from_id(unsigned id, unsigned long long *size);
extern void get_one_disk(int mdfd, mdu_array_info_t *ainf,
mdu_disk_info_t *disk);
void wait_for(char *dev, int fd);
+/*
+ * Data structures for policy management.
+ * Each device can have a policy structure that lists
+ * various name/value pairs each possibly with a metadata associated.
+ * The policy list is sorted by name/value/metadata
+ */
+struct dev_policy {
+ struct dev_policy *next;
+ char *name; /* None of these strings are allocated. They are
+ * all just references to strings which are known
+ * to exist elsewhere.
+ * name and metadata can be compared by address equality.
+ */
+ const char *metadata;
+ const char *value;
+};
+
+extern char pol_act[], pol_domain[], pol_metadata[], pol_auto[];
+
+/* iterate over the sublist starting at list, having the same
+ * 'name' as 'list', and matching the given metadata (Where
+ * NULL matches anything
+ */
+#define pol_for_each(item, list, _metadata) \
+ for (item = list; \
+ item && item->name == list->name; \
+ item = item->next) \
+ if (!(!_metadata || !item->metadata || _metadata == item->metadata)) \
+ ; else
+
+/*
+ * policy records read from mdadm are largely just name-value pairs.
+ * The names are constants, not strdupped
+ */
+struct pol_rule {
+ struct pol_rule *next;
+ char *type; /* rule_policy or rule_part */
+ struct rule {
+ struct rule *next;
+ char *name;
+ char *value;
+ char *dups; /* duplicates of 'value' with a partNN appended */
+ } *rule;
+};
+
+extern char rule_policy[], rule_part[];
+extern char rule_path[], rule_type[];
+extern char type_part[], type_disk[];
+
+extern void policyline(char *line, char *type);
+extern void policy_add(char *type, ...);
+extern void policy_free(void);
+
+extern struct dev_policy *path_policy(char *path, char *type);
+extern struct dev_policy *disk_policy(struct mdinfo *disk);
+extern struct dev_policy *devnum_policy(int dev);
+extern void dev_policy_free(struct dev_policy *p);
+
+//extern void pol_new(struct dev_policy **pol, char *name, char *val, char *metadata);
+extern void pol_add(struct dev_policy **pol, char *name, char *val, char *metadata);
+extern struct dev_policy *pol_find(struct dev_policy *pol, char *name);
+
+enum policy_action {
+ act_default,
+ act_include,
+ act_re_add,
+ act_spare, /* This only applies to bare devices */
+ act_spare_same_slot, /* this allows non-bare devices,
+ * but only if recent removal */
+ act_force_spare, /* this allow non-bare devices in any case */
+ act_err
+};
+
+extern int policy_action_allows(struct dev_policy *plist, const char *metadata,
+ enum policy_action want);
+extern int disk_action_allows(struct mdinfo *disk, const char *metadata,
+ enum policy_action want);
+
+struct domainlist {
+ struct domainlist *next;
+ const char *dom;
+};
+
+extern int domain_test(struct domainlist *dom, struct dev_policy *pol,
+ const char *metadata);
+extern struct domainlist *domain_from_array(struct mdinfo *mdi,
+ const char *metadata);
+extern void domainlist_add_dev(struct domainlist **dom, int devnum,
+ const char *metadata);
+extern void domain_free(struct domainlist *dl);
+extern void domain_merge(struct domainlist **domp, struct dev_policy *pol,
+ const char *metadata);
+void domain_add(struct domainlist **domp, char *domain);
+
+extern void policy_save_path(char *id_path, struct map_ent *array);
+extern int policy_check_path(struct mdinfo *disk, struct map_ent *array);
+
#if __GNUC__ < 3
struct stat64;
#endif
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);
+ struct mddev_dev *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);
struct mdinfo *info, char *backup_file);
extern int Assemble(struct supertype *st, char *mddev,
- mddev_ident_t ident,
- mddev_dev_t devlist, char *backup_file,
+ struct mddev_ident *ident,
+ struct mddev_dev *devlist, char *backup_file,
int readonly, int runstop,
char *update, char *homehost, int require_homehost,
int verbose, int force);
extern int Build(char *mddev, int chunk, int level, int layout,
- int raiddisks, mddev_dev_t devlist, int assume_clean,
+ int raiddisks, struct mddev_dev *devlist, int assume_clean,
char *bitmap_file, int bitmap_chunk, int write_behind,
int delay, int verbose, int autof, unsigned long long size);
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 subdevs, struct mddev_dev *devlist,
int runstop, int verbose, int force, int assume_clean,
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 Detail_Platform(struct superswitch *ss, int scan, int verbose);
extern int Query(char *dev);
-extern int Examine(mddev_dev_t devlist, int brief, int export, int scan,
+extern int Examine(struct mddev_dev *devlist, int brief, int export, int scan,
int SparcAdjust, struct supertype *forcest, char *homehost);
-extern int Monitor(mddev_dev_t devlist,
+extern int Monitor(struct mddev_dev *devlist,
char *mailaddr, char *alert_cmd,
int period, int daemonise, int scan, int oneshot,
- int dosyslog, int test, char *pidfile, int increments);
+ int dosyslog, int test, char *pidfile, int increments,
+ int share);
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, struct mddev_ident *ident, int quiet);
extern int Wait(char *dev);
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 autof);
-extern int Incremental_container(struct supertype *st, char *devname,
- int verbose, int runstop, int autof,
- int trustworthy);
extern void RebuildMap(void);
extern int IncrementalScan(int verbose);
-
+extern int IncrementalRemove(char *devname, char *path, 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 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);
-extern mddev_dev_t conf_get_devs(void);
+extern struct mddev_ident *conf_get_ident(char *dev);
+extern struct mddev_dev *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, struct dev_policy *pol, int is_homehost);
extern struct createinfo *conf_get_create_info(void);
extern void set_conffile(char *file);
extern char *conf_get_mailaddr(void);
extern char *conf_word(FILE *file, int allow_key);
extern int conf_name_is_free(char *name);
extern int devname_matches(char *name, char *match);
-extern struct mddev_ident_s *conf_match(struct mdinfo *info, struct supertype *st);
+extern struct mddev_ident *conf_match(struct mdinfo *info, struct supertype *st);
extern void free_line(char *line);
extern int match_oneof(char *devices, char *devname);
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);
+extern int enough_fd(int fd);
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);
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, char *subarray, struct supertype *st, int quiet);
+extern struct superswitch *version_to_superswitch(char *vers);
-extern char *pid_dir;
extern int mdmon_running(int devnum);
extern int mdmon_pid(int devnum);
extern int check_env(char *name);
return (*vers == '/' || *vers == '-');
}
+static inline char *to_subarray(struct mdstat_ent *ent, char *container)
+{
+ return &ent->metadata_version[10+strlen(container)+1];
+}
+
#ifdef DEBUG
#define dprintf(fmt, arg...) \
fprintf(stderr, fmt, ##arg)
projects / thirdparty / mdadm.git / blobdiff