#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
#endif
+#define DEFAULT_CHUNK 512
#define DEFAULT_BITMAP_CHUNK 4096
#define DEFAULT_BITMAP_DELAY 5
#define DEFAULT_MAX_WRITE_BEHIND 256
Help_manage[], Help_misc[], Help_monitor[], Help_config[];
/* 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')
+ * numbers later than any 'short' character option.
*/
enum special_options {
- AssumeClean = 2,
+ AssumeClean = 300,
BitmapChunk,
WriteBehind,
ReAdd,
NoDegraded,
Sparc22,
- BackupFile, /* 8 */
+ BackupFile,
HomeHost,
AutoHomeHost,
Symlinks,
Waitclean,
DetailPlatform,
KillSubarray,
- UpdateSubarray, /* 16 */
+ UpdateSubarray,
IncrementalPath,
- NoSharing
+ NoSharing,
+ HelpOptions,
+ Brief,
+ ManageOpt,
+ Add,
+ Remove,
+ Fail,
+ MiscOpt,
+ WaitOpt,
+ ConfigFile,
+ ChunkSize,
+ WriteMostly,
+ Layout,
+ Auto,
+ Force,
+ SuperMinor,
+ EMail,
+ ProgramOpt,
+ Increment,
+ Fork,
+ Bitmap,
+ RebuildMapOpt,
+ InvalidBackup,
+ UdevRules,
};
/* structures read from config file */
/* List of device names - wildcards expanded */
struct mddev_dev {
char *devname;
- char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
+ int 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' */
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;
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);
+extern struct mdstat_ent *mdstat_by_subdev(char *subdev, int container);
struct map_ent {
struct map_ent *next;
extern int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev,
char *name, unsigned long long *val);
extern int sysfs_fd_get_str(int fd, char *val, int size);
+extern int sysfs_attribute_available(struct mdinfo *sra, struct mdinfo *dev,
+ char *name);
extern int sysfs_get_str(struct mdinfo *sra, struct mdinfo *dev,
char *name, char *val, int size);
extern int sysfs_set_safemode(struct mdinfo *sra, unsigned long ms);
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 sysfs_freeze_array(struct mdinfo *sra);
extern int load_sys(char *path, char *buf);
-
+extern int reshape_prepare_fdlist(char *devname,
+ struct mdinfo *sra,
+ int raid_disks,
+ int nrdisks,
+ unsigned long blocks,
+ char *backup_file,
+ int *fdlist,
+ unsigned long long *offsets);
+extern void reshape_free_fdlist(int *fdlist,
+ unsigned long long *offsets,
+ int size);
+extern int reshape_open_backup_file(char *backup,
+ int fd,
+ char *devname,
+ long blocks,
+ int *fdlist,
+ unsigned long long *offsets,
+ int restart);
+extern unsigned long compute_backup_blocks(int nchunk, int ochunk,
+ unsigned int ndata, unsigned int odata);
extern int save_stripes(int *source, unsigned long long *offsets,
int raid_disks, int chunk_size, int level, int layout,
struct active_array;
struct metadata_update;
+
+/* 'struct reshape' records the intermediate states
+ * a general reshape.
+ * The starting geometry is converted to the 'before' geometry
+ * by at most an atomic level change. They could be the same.
+ * Similarly the 'after' geometry is converted to the final
+ * geometry by at most a level change.
+ * Note that 'before' and 'after' must have the same level.
+ * 'blocks' is the minimum number of sectors for a reshape unit.
+ * This will be a multiple of the stripe size in each of the
+ * 'before' and 'after' geometries.
+ * If 'blocks' is 0, no restriping is necessary.
+ */
+struct reshape {
+ int level;
+ int parity; /* number of parity blocks/devices */
+ struct {
+ int layout;
+ int data_disks;
+ } before, after;
+ unsigned long long backup_blocks;
+ unsigned long long stripes; /* number of old stripes that comprise 'blocks'*/
+ unsigned long long new_size; /* New size of array in sectors */
+};
+
/* A superswitch provides entry point the a metadata handler.
*
* The super_switch primarily operates on some "metadata" that
* when hot-adding a spare.
*/
int (*add_to_super)(struct supertype *st, mdu_disk_info_t *dinfo,
- int fd, char *devname);
+ int fd, char *devname);
+ /* update the metadata to delete a device,
+ * when hot-removing.
+ */
+ int (*remove_from_super)(struct supertype *st, mdu_disk_info_t *dinfo);
/* Write metadata to one device when fixing problems or adding
* a new device.
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);
* added to validate changing size and new devices. If there are
* inter-device dependencies, it should record sufficient details
* so these can be validated.
- * Both 'size' and '*freesize' are in sectors. chunk is bytes.
+ * Both 'size' and '*freesize' are in sectors. chunk is KiB.
*/
int (*validate_geometry)(struct supertype *st, int level, int layout,
int raiddisks,
- int chunk, unsigned long long size,
+ int *chunk, unsigned long long size,
char *subdev, unsigned long long *freesize,
int verbose);
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 */
+ /* query the supertype for default geometry */
+ void (*default_geometry)(struct supertype *st, int *level, int *layout, int *chunk); /* 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 */
+ /* Check if reshape is supported for this external format.
+ * st is obtained from super_by_fd() where st->subarray[0] is
+ * initialized to indicate if reshape is being performed at the
+ * container or subarray level
+ */
+ int (*reshape_super)(struct supertype *st, long long size, int level,
+ int layout, int chunksize, int raid_disks,
+ int delta_disks, char *backup, char *dev,
+ int verbose); /* optional */
+ int (*manage_reshape)( /* optional */
+ int afd, struct mdinfo *sra, struct reshape *reshape,
+ struct supertype *st, unsigned long blocks,
+ int *fds, unsigned long long *offsets,
+ int dests, int *destfd, unsigned long long *destoffsets);
/* 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;
int len;
char *buf;
void *space; /* allocated space that monitor will use */
+ void **space_list; /* list of allocated spaces that monitor can
+ * use or that it returned.
+ */
struct metadata_update *next;
};
int container_dev; /* devnum of container */
void *sb;
void *info;
-
+ int ignore_hw_compat; /* used to inform metadata handlers that it should ignore
+ HW/firmware related incompatability to load metadata.
+ Used when examining metadata to display content of disk
+ when user has no hw/firmare compatible system.
+ */
struct metadata_update *updates;
struct metadata_update **update_tail;
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 int dev_size_from_id(dev_t 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);
* name and metadata can be compared by address equality.
*/
const char *metadata;
- char *value;
+ const char *value;
};
extern char pol_act[], pol_domain[], pol_metadata[], pol_auto[];
struct domainlist {
struct domainlist *next;
- char *dom;
+ const char *dom;
};
extern int domain_test(struct domainlist *dom, struct dev_policy *pol,
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,
- struct mddev_dev *devlist, int verbose, int test);
+ struct mddev_dev *devlist, int verbose, int test,
+ char *update);
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 Grow_reshape(char *devname, int fd, int quiet, char *backup_file,
long long size,
- int level, char *layout_str, int chunksize, int raid_disks);
+ int level, char *layout_str, int chunksize, int raid_disks,
+ struct mddev_dev *devlist,
+ int force);
extern int Grow_restart(struct supertype *st, struct mdinfo *info,
int *fdlist, int cnt, char *backup_file, int verbose);
extern int Grow_continue(int mdfd, struct supertype *st,
extern int Assemble(struct supertype *st, char *mddev,
struct mddev_ident *ident,
- struct mddev_dev *devlist, char *backup_file,
+ struct mddev_dev *devlist,
+ char *backup_file, int invalid_backup,
int readonly, int runstop,
char *update, char *homehost, int require_homehost,
int verbose, int force);
unsigned long long array_size,
int major);
extern int ExamineBitmap(char *filename, int brief, struct supertype *st);
+extern int Write_rules(char *rule_name);
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);
+extern int mdadm_version(char *version);
extern long long parse_size(char *size);
extern int parse_uuid(char *str, int uuid[4]);
extern int parse_layout_10(char *layout);
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 check_partitions(int fd, char *dname,
+ unsigned long long freesize,
+ unsigned long long size);
extern int get_mdp_major(void);
extern int dev_open(char *dev, int flags);
extern int open_dev(int devnum);
+extern int open_dev_flags(int devnum, int flags);
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 conf_name_is_free(char *name);
extern int devname_matches(char *name, char *match);
extern struct mddev_ident *conf_match(struct mdinfo *info, struct supertype *st);
+extern int experimental(void);
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 const int uuid_zero[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 unsigned long long get_component_size(int fd);
extern void remove_partitions(int fd);
extern int test_partition(int fd);
+extern int test_partition_from_id(dev_t id);
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);
-
+ char *chosen_name, int verbose,
+ char *backup_file);
+extern struct mdinfo *container_choose_spares(struct supertype *st,
+ unsigned long long min_size,
+ struct domainlist *domlist,
+ char *spare_group,
+ const char *metadata, int get_one);
+extern int move_spare(char *from_devname, char *to_devname, dev_t devid);
extern int add_disk(int mdfd, struct supertype *st,
struct mdinfo *sra, struct mdinfo *info);
+extern int remove_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 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 __u32 random32(void);
extern int start_mdmon(int devnum);
+extern int child_monitor(int afd, struct mdinfo *sra, struct reshape *reshape,
+ struct supertype *st, unsigned long stripes,
+ int *fds, unsigned long long *offsets,
+ int dests, int *destfd, unsigned long long *destoffsets);
+
extern char *devnum2devname(int num);
+extern void fmt_devname(char *name, int num);
extern int devname2devnum(char *name);
extern int stat2devnum(struct stat *st);
extern int fd2devnum(int fd);
/* 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/componentname for arrays which mdmon must not
+ * reconfigure. They might be read-only
+ * or might be undergoing reshape etc.
* containername is e.g. md0, md_d1
* componentname is dependant on the metadata. e.g. '1' 'S1' ...
*/
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