#define _GNU_SOURCE
#define _FILE_OFFSET_BITS 64
#include <unistd.h>
-#if !defined(__dietlibc__) && !defined(__KLIBC__)
+#ifdef __GLIBC__
extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
-#else
+#elif !defined(lseek64)
# if defined(__NO_STAT64) || __WORDSIZE != 32
# define lseek64 lseek
# endif
#define srandom srand
#endif
-
#include <linux/kdev_t.h>
/*#include <linux/fs.h> */
#include <sys/mount.h>
#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
/* 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.
+ * /run seems to have emerged as the best standard.
*/
#ifndef MAP_DIR
-#define MAP_DIR "/dev/.mdadm"
+#define MAP_DIR "/run/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"
#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
+ * with mdmon normally live. Best is /var/run/mdadm as
* 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
* boot process and stays up as long as possible during shutdown.
*/
#ifndef MDMON_DIR
-#define MDMON_DIR "/dev/.mdadm/"
+#define MDMON_DIR "/run/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 "/run/mdadm/failed-slots"
+#endif /* FAILED_SLOTS */
+
#include "md_u.h"
#include "md_p.h"
#include "bitmap.h"
#endif
#endif /* __KLIBC__ */
-
/*
* min()/max()/clamp() macros that also do
* strict type-checking.. See the
int uuid[4];
char name[33];
unsigned long long data_offset;
+ unsigned long long new_data_offset;
unsigned long long component_size; /* same as array.size, except in
* sectors and up to 64bits.
*/
unsigned long long custom_array_size; /* size for non-default sized
* arrays (in sectors)
*/
+#define NO_RESHAPE 0
+#define VOLUME_RESHAPE 1
+#define CONTAINER_RESHAPE 2
+#define RESHAPE_NO_BACKUP 16 /* Mask 'or'ed in */
int reshape_active;
unsigned long long reshape_progress;
+ int recovery_blocked; /* for external metadata it
+ * indicates that there is
+ * reshape in progress in
+ * container,
+ * for native metadata it is
+ * reshape_active field mirror
+ */
+ /* During reshape we can sometimes change the data_offset to avoid
+ * over-writing still-valid data. We need to know if there is space.
+ * So getinfo_super will fill in space_before and space_after in sectors.
+ * data_offset can be increased or decreased by this amount.
+ */
+ unsigned long long space_before, space_after;
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 */
};
+ long bitmap_offset; /* 0 == none, 1 == a file */
unsigned long safe_mode_delay; /* ms delay to mark clean */
int new_level, delta_disks, new_layout, new_chunk;
int errors;
unsigned long 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
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];
+ char sys_name[20];
struct mdinfo *devs;
struct mdinfo *next;
int autof;
int mode;
int symlinks;
+ int names;
struct supertype *supertype;
};
GROW,
INCREMENTAL,
AUTODETECT,
+ mode_count
};
extern char short_options[];
extern char short_bitmap_auto_options[];
extern struct option long_options[];
extern char Version[], Usage[], Help[], OptionHelp[],
+ *mode_help[],
Help_create[], Help_build[], Help_assemble[], Help_grow[],
Help_incr[],
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,
+ HelpOptions,
+ Brief,
+ ManageOpt,
+ Add,
+ Remove,
+ Fail,
+ Replace,
+ With,
+ MiscOpt,
+ WaitOpt,
+ ConfigFile,
+ ChunkSize,
+ WriteMostly,
+ Layout,
+ Auto,
+ Force,
+ SuperMinor,
+ EMail,
+ ProgramOpt,
+ Increment,
+ Fork,
+ Bitmap,
+ RebuildMapOpt,
+ InvalidBackup,
+ UdevRules,
+ FreezeReshape,
+ Continue,
+ OffRootOpt,
+ Prefer,
+ KillOpt,
+ DataOffset,
+ ExamineBB,
+ Dump,
+ Restore,
+};
+
+enum prefix_standard {
+ JEDEC,
+ IEC
};
/* structures read from config file */
* devices is considered
*/
#define UnSet (0xfffe)
-typedef struct mddev_ident_s {
+struct mddev_ident {
char *devname;
int uuid_set;
*/
char *member; /* subarray within a container */
- struct mddev_ident_s *next;
+ struct mddev_ident *next;
union {
/* fields needed by different users of this structure */
int assembled; /* set when assembly succeeds */
};
-} *mddev_ident_t;
+};
+
+struct context {
+ int readonly;
+ int runstop;
+ int verbose;
+ int brief;
+ int force;
+ char *homehost;
+ int require_homehost;
+ char *prefer;
+ int export;
+ int test;
+ char *subarray;
+ char *update;
+ int scan;
+ int SparcAdjust;
+ int autof;
+ int delay;
+ int freeze_reshape;
+ char *backup_file;
+ int invalid_backup;
+};
+
+struct shape {
+ int raiddisks;
+ int sparedisks;
+ int level;
+ int layout;
+ char *layout_str;
+ int chunk;
+ int bitmap_chunk;
+ char *bitmap_file;
+ int assume_clean;
+ int write_behind;
+ unsigned long long size;
+};
/* 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.
+ int disposition; /* 'a' for add, 'r' for remove, 'f' for fail,
+ * 'A' for re_add.
* 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;
+ int used; /* set when used */
+ long long data_offset;
+ struct mddev_dev *next;
+};
typedef struct mapping {
char *name;
int num;
} mapping_t;
-
struct mdstat_ent {
char *dev;
- int devnum;
+ char devnm[32];
int active;
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;
char * metadata_version;
struct dev_member {
char *name;
struct dev_member *next;
- } *members;
+ } *members;
struct mdstat_ent *next;
};
extern struct mdstat_ent *mdstat_read(int hold, int start);
+extern void mdstat_close(void);
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);
+extern int mddev_busy(char *devnm);
extern struct mdstat_ent *mdstat_by_component(char *name);
+extern struct mdstat_ent *mdstat_by_subdev(char *subdev, char *container);
struct map_ent {
struct map_ent *next;
- int devnum;
+ char devnm[32];
char metadata[20];
int uuid[4];
int bad;
char *path;
};
-extern int map_update(struct map_ent **mpp, int devnum, char *metadata,
+extern int map_update(struct map_ent **mpp, char *devnm, char *metadata,
int uuid[4], char *path);
-extern void map_remove(struct map_ent **map, int devnum);
+extern void map_remove(struct map_ent **map, char *devnm);
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);
+#ifdef MDASSEMBLE
+static inline struct map_ent *map_by_devnm(struct map_ent **map, char *name)
+{
+ return NULL;
+}
+static inline void map_free(struct map_ent *map)
+{
+}
+#else
+extern struct map_ent *map_by_devnm(struct map_ent **map, char *devnm);
+extern void map_free(struct map_ent *map);
+#endif
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_delete(struct map_ent **mapp, char *devnm);
extern void map_add(struct map_ent **melp,
- int devnum, char *metadata, int uuid[4], char *path);
+ char *devnm, char *metadata, int uuid[4], char *path);
extern int map_lock(struct map_ent **melp);
extern void map_unlock(struct map_ent **melp);
+extern void map_fork(void);
/* various details can be requested */
enum sysfs_read_flags {
GET_DISKS = (1 << 7),
GET_DEGRADED = (1 << 8),
GET_SAFEMODE = (1 << 9),
- GET_DEVS = (1 << 10), /* gets role, major, minor */
- GET_OFFSET = (1 << 11),
- GET_SIZE = (1 << 12),
- GET_STATE = (1 << 13),
- GET_ERROR = (1 << 14),
+ GET_BITMAP_LOCATION = (1 << 10),
+
+ GET_DEVS = (1 << 20), /* gets role, major, minor */
+ GET_OFFSET = (1 << 21),
+ GET_SIZE = (1 << 22),
+ GET_STATE = (1 << 23),
+ GET_ERROR = (1 << 24),
};
/* If fd >= 0, get the array it is open on,
- * else use devnum. >=0 -> major9. <0.....
+ * else use devnm.
*/
-extern int sysfs_open(int devnum, char *devname, char *attr);
-extern void sysfs_init(struct mdinfo *mdi, int fd, int devnum);
+extern int sysfs_open(char *devnm, char *devname, char *attr);
+extern void sysfs_init(struct mdinfo *mdi, int fd, char *devnm);
extern void sysfs_free(struct mdinfo *sra);
-extern struct mdinfo *sysfs_read(int fd, int devnum, unsigned long options);
+extern struct mdinfo *sysfs_read(int fd, char *devnm, 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_set_num_signed(struct mdinfo *sra, struct mdinfo *dev,
+ char *name, long long val);
extern int sysfs_uevent(struct mdinfo *sra, char *event);
extern int sysfs_get_fd(struct mdinfo *sra, struct mdinfo *dev,
char *name);
extern int sysfs_fd_get_ll(int fd, unsigned long long *val);
extern int sysfs_get_ll(struct mdinfo *sra, struct mdinfo *dev,
char *name, unsigned long long *val);
+extern int sysfs_fd_get_two(int fd, unsigned long long *v1, unsigned long long *v2);
+extern int sysfs_get_two(struct mdinfo *sra, struct mdinfo *dev,
+ char *name, unsigned long long *v1, unsigned long long *v2);
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_set_array(struct mdinfo *info, int vers);
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_unique_holder(char *devnm, long rdev);
+extern int sysfs_freeze_array(struct mdinfo *sra);
+extern int sysfs_wait(int fd, int *msec);
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,
extern int restore_stripes(int *dest, unsigned long long *offsets,
int raid_disks, int chunk_size, int level, int layout,
int source, unsigned long long read_offset,
- unsigned long long start, unsigned long long length);
+ unsigned long long start, unsigned long long length,
+ char *src_buf);
#ifndef Sendmail
#define Sendmail "/usr/lib/sendmail -t"
extern int map_name(mapping_t *map, char *name);
extern mapping_t r5layout[], r6layout[], pers[], modes[], faultylayout[];
-extern char *map_dev(int major, int minor, int create);
+extern char *map_dev_preferred(int major, int minor, int create,
+ char *prefer);
+static inline char *map_dev(int major, int minor, int create)
+{
+ return map_dev_preferred(major, minor, create, NULL);
+}
struct active_array;
struct metadata_update;
+/* 'struct reshape' records the intermediate states of
+ * 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.
+ * 'min_offset_change' is the minimum change to data_offset to
+ * allow the reshape to happen. It is at least the larger of
+ * the old and new chunk sizes, and typically the same as 'blocks'
+ * divided by number of data disks.
+ */
+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 min_offset_change;
+ 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
+ * The superswitch primarily operates on some "metadata" that
* is accessed via the 'supertype'.
* This metadata has one of three possible sources.
* 1/ It is read from a single device. In this case it may not completely
void (*brief_examine_super)(struct supertype *st, int verbose);
void (*brief_examine_subarrays)(struct supertype *st, int verbose);
void (*export_examine_super)(struct supertype *st);
+ int (*examine_badblocks)(struct supertype *st, int fd, char *devname);
+ int (*copy_metadata)(struct supertype *st, int from, int to);
/* Used to report details of an active array.
* ->load_super was possibly given a 'component' string.
void (*export_detail_super)(struct supertype *st);
/* Optional: platform hardware / firmware details */
- int (*detail_platform)(int verbose, int enumerate_only);
+ int (*detail_platform)(int verbose, int enumerate_only, char *controller_path);
+ int (*export_detail_platform)(int verbose, char *controller_path);
/* Used:
* to get uuid to storing in bitmap metadata
* 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.
+ * *info is zeroed out before data is added.
*/
- 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"
*/
* linear-grow-new - add a new device to a linear array, but don't
* change the size: so superblock still matches
* linear-grow-update - now change the size of the array.
+ * writemostly - set the WriteMostly1 bit in the superblock devflags
+ * readwrite - clear the WriteMostly1 bit in the superblock devflags
+ * no-bitmap - clear any record that a bitmap is present.
+ * bbl - add a bad-block-log if possible
+ * no-bbl - remove and bad-block-log is it is empty.
+ * revert-reshape - If a reshape is in progress, modify metadata so
+ * it will resume going in the opposite direction.
*/
int (*update_super)(struct supertype *st, struct mdinfo *info,
char *update,
*/
int (*init_super)(struct supertype *st, mdu_array_info_t *info,
unsigned long long size, char *name,
- char *homehost, int *uuid);
+ char *homehost, int *uuid,
+ unsigned long long data_offset);
/* update the metadata to include new device, either at create or
* 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,
+ unsigned long long data_offset);
/* update the metadata to delete a device,
* when hot-removing.
*/
/* Write all metadata for this array.
*/
int (*write_init_super)(struct supertype *st);
+ /* Check if metadata read from one device is compatible with an array,
+ * used when assembling an array, or pseudo-assembling was with
+ * "--examine --brief"
+ * If "st" has not yet been loaded the superblock from, "tst" is
+ * moved in, otherwise the superblock in 'st' is compared with
+ * 'tst'.
+ */
int (*compare_super)(struct supertype *st, struct supertype *tst);
+ /* Load metadata from a single device. If 'devname' is not NULL
+ * print error messages as appropriate */
int (*load_super)(struct supertype *st, int fd, char *devname);
+ /* 'fd' is a 'container' md array - load array metadata from the
+ * whole container.
+ */
+ int (*load_container)(struct supertype *st, int fd, char *devname);
+ /* If 'arg' is a valid name of this metadata type, allocate and
+ * return a 'supertype' for the particular minor version */
struct supertype * (*match_metadata_desc)(char *arg);
- __u64 (*avail_size)(struct supertype *st, __u64 size);
+ /* If a device has the given size, and the data_offset has been
+ * requested - work out how much space is available for data.
+ * This involves adjusting for reserved space (e.g. bitmaps)
+ * and for any rounding.
+ * 'mdadm' only calls this for existing arrays where a possible
+ * spare is being added. However some super-handlers call it
+ * internally from validate_geometry when creating an array.
+ */
+ __u64 (*avail_size)(struct supertype *st, __u64 size,
+ unsigned long long data_offset);
+ /* This is similar to 'avail_size' in purpose, but is used for
+ * containers for which there is no 'component size' to compare.
+ * This reports that whole-device size which is a minimum
+ */
+ unsigned long long (*min_acceptable_spare_size)(struct supertype *st);
+ /* Find somewhere to put a bitmap - possibly auto-size it - and
+ * update the metadata to record this. The array may be newly
+ * created, in which case data_size may be updated, or it might
+ * already exist. Metadata handler can know if init_super
+ * has been called, but not write_init_super.
+ */
int (*add_internal_bitmap)(struct supertype *st, int *chunkp,
int delay, int write_behind,
unsigned long long size, int may_change, int major);
+ /* Seek 'fd' to start of write-intent-bitmap. Must be an
+ * md-native format bitmap
+ */
void (*locate_bitmap)(struct supertype *st, int fd);
+ /* if add_internal_bitmap succeeded for existing array, this
+ * writes it out.
+ */
int (*write_bitmap)(struct supertype *st, int fd);
+ /* Free the superblock and any other allocated data */
void (*free_super)(struct supertype *st);
/* validate_geometry is called with an st returned by
* match_metadata_desc.
- * It should check that the geometry described in compatible with
+ * It should check that the geometry described is compatible with
* the metadata type. It will be called repeatedly as devices
* 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.
+ * Return value is:
+ * 1: everything is OK
+ * 0: not OK for some reason - if 'verbose', then error was reported.
+ * -1: st->sb was NULL, 'subdev' is a member of a container of this
+ * type, but array is not acceptable for some reason
+ * message was reported even if verbose is 0.
*/
int (*validate_geometry)(struct supertype *st, int level, int layout,
int raiddisks,
- int chunk, unsigned long long size,
+ int *chunk, unsigned long long size,
+ unsigned long long data_offset,
char *subdev, unsigned long long *freesize,
int verbose);
- 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 */
+ /* Return a linked list of 'mdinfo' structures for all arrays
+ * in the container. For non-containers, it is like
+ * getinfo_super with an allocated mdinfo.*/
+ struct mdinfo *(*container_content)(struct supertype *st, char *subarray);
+ /* 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 *update, mddev_ident_t ident); /* optional */
+ 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
+ */
+#define APPLY_METADATA_CHANGES 1
+#define ROLLBACK_METADATA_CHANGES 0
+
+ int (*reshape_super)(struct supertype *st,
+ unsigned long long size, int level,
+ int layout, int chunksize, int raid_disks,
+ int delta_disks, char *backup, char *dev,
+ int direction,
+ 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,
* (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
+ * 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'.
*/
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);
+
+ /* for external backup area */
+ int (*recover_backup)(struct supertype *st, struct mdinfo *info);
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;
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;
};
struct superswitch *ss;
int minor_version;
int max_devs;
- int container_dev; /* devnum of container */
- char subarray[32]; /* name of array inside container */
+ char container_devnm[32]; /* devnm of container */
void *sb;
void *info;
- int loaded_container; /* Set if load_super found a container,
- * not just one device */
-
+ void *other; /* Hack used to convert v0.90 to v1.0 */
+ unsigned long long devsize;
+ unsigned long long data_offset; /* used by v1.x only */
+ 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;
/* extra stuff used by mdmon */
struct active_array *arrays;
int sock; /* listen to external programs */
- int devnum;
- char *devname; /* e.g. md0. This appears in metadata_verison:
- * external:/md0/12
- */
+ char devnm[32]; /* e.g. md0. This appears in metadata_version:
+ * external:/md0/12
+ */
int devcnt;
+ int retry_soon;
struct mdinfo *devs;
};
-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 void get_one_disk(int mdfd, mdu_array_info_t *ainf,
- mdu_disk_info_t *disk);
+extern int must_be_container(int fd);
+extern int dev_size_from_id(dev_t id, unsigned long long *size);
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 *devid_policy(int devid);
+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 devid,
+ 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 add_dev(const char *name, const struct stat *stb, int flag, struct FTW *s);
-
extern int Manage_ro(char *devname, int fd, int readonly);
-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_run(char *devname, int fd, int quiet);
+extern int Manage_stop(char *devname, int fd, int quiet,
+ int will_retry);
extern int Manage_subdevs(char *devname, int fd,
- mddev_dev_t devlist, int verbose, int test);
+ struct mddev_dev *devlist, int verbose, int test,
+ char *update, int force);
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);
+extern int Grow_addbitmap(char *devname, int fd,
+ struct context *c, struct shape *s);
+extern int Grow_reshape(char *devname, int fd,
+ struct mddev_dev *devlist,
+ unsigned long long data_offset,
+ struct context *c, struct shape *s);
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,
- struct mdinfo *info, char *backup_file);
+ struct mdinfo *info, char *backup_file,
+ int freeze_reshape);
+
+extern int restore_backup(struct supertype *st,
+ struct mdinfo *content,
+ int working_disks,
+ int spares,
+ char *backup_file,
+ int verbose);
+extern int Grow_continue_command(char *devname, int fd,
+ char *backup_file, int verbose);
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 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,
- char *bitmap_file, int bitmap_chunk, int write_behind,
- int delay, int verbose, int autof, unsigned long long size);
+ struct mddev_ident *ident,
+ struct mddev_dev *devlist,
+ struct context *c);
+extern int Build(char *mddev, struct mddev_dev *devlist,
+ struct shape *s, struct context *c);
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, 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);
+ char *name, int *uuid,
+ int subdevs, struct mddev_dev *devlist,
+ struct shape *s,
+ struct context *c,
+ unsigned long long data_offset);
+
+extern int Detail(char *dev, struct context *c);
+extern int Detail_Platform(struct superswitch *ss, int scan, int verbose, int export, char *controller_path);
extern int Query(char *dev);
-extern int Examine(mddev_dev_t devlist, int brief, int export, int scan,
- int SparcAdjust, struct supertype *forcest, char *homehost);
-extern int Monitor(mddev_dev_t devlist,
+extern int ExamineBadblocks(char *devname, int brief, struct supertype *forcest);
+extern int Examine(struct mddev_dev *devlist, struct context *c,
+ struct supertype *forcest);
+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);
-
-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);
+ struct context *c,
+ int daemonise, int oneshot,
+ int dosyslog, char *pidfile, int increments,
+ int share);
+
+extern int Kill(char *dev, struct supertype *st, int force, int verbose, int noexcl);
+extern int Kill_subarray(char *dev, char *subarray, int verbose);
+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 int Incremental(char *devname, struct context *c,
+ struct supertype *st);
extern void RebuildMap(void);
extern int IncrementalScan(int verbose);
-extern int IncrementalRemove(char *devname, 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,
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 Dump_metadata(char *dev, char *dir, struct context *c,
+ struct supertype *st);
+extern int Restore_metadata(char *dev, char *dir, struct context *c,
+ struct supertype *st, int only);
extern int md_get_version(int fd);
extern int get_linux_version(void);
-extern long long parse_size(char *size);
+extern int mdadm_version(char *version);
+extern unsigned long long parse_size(char *size);
extern int parse_uuid(char *str, int uuid[4]);
extern int parse_layout_10(char *layout);
extern int parse_layout_faulty(char *layout);
+extern long parse_num(char *num);
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_excl(int devnum);
+extern int open_dev(char *devnm);
+extern int open_dev_flags(char *devnm, int flags);
+extern int open_dev_excl(char *devnm);
extern int is_standard(char *dev, int *nump);
extern int same_dev(char *one, char *two);
+extern int compare_paths (char* path1,char* path2);
+extern void enable_fds(int devices);
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, int is_homehost);
+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_get_homehost(int *require_homehostp);
extern char *conf_line(FILE *file);
extern char *conf_word(FILE *file, int allow_key);
+extern void print_quoted(char *str);
+extern void print_escape(char *str);
+extern int use_udev(void);
+extern unsigned long GCD(unsigned long a, unsigned long b);
extern int conf_name_is_free(char *name);
+extern int conf_verify_devnames(struct mddev_ident *array_list);
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 supertype *st,
+ struct mdinfo *info,
+ char *devname,
+ int verbose, int *rvp);
+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);
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);
+ char *avail);
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 int test_partition_from_id(dev_t id);
+extern int get_data_disks(int level, int layout, int raid_disks);
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);
-
+ struct mdinfo *content,
+ struct context *c,
+ char *chosen_name);
+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 char *human_size(long long bytes);
-extern char *human_size_brief(long long bytes);
+extern char *human_size_brief(long long bytes, int prefix);
extern void print_r10_layout(int layout);
-#define NoMdDev (1<<23)
-extern int find_free_devnum(int use_partitions);
+extern char *find_free_devnm(int use_partitions);
extern void put_md_name(char *name);
-extern char *get_md_name(int dev);
+extern char *devid2devnm(int devid);
+extern int devnm2devid(char *devnm);
+extern char *get_md_name(char *devnm);
extern char DefaultConfFile[];
#define METADATA 3
extern int open_mddev(char *dev, int report_errors);
extern int open_container(int fd);
+extern int metadata_container_matches(char *metadata, char *devnm);
+extern int metadata_subdev_matches(char *metadata, char *devnm);
extern int is_container_member(struct mdstat_ent *ent, char *devname);
extern int is_subarray_active(char *subarray, char *devname);
-extern int open_subarray(char *dev, struct supertype *st, int quiet);
+extern int open_subarray(char *dev, char *subarray, struct supertype *st, int quiet);
extern struct superswitch *version_to_superswitch(char *vers);
-extern int mdmon_running(int devnum);
-extern int mdmon_pid(int devnum);
+extern int mdmon_running(char *devnm);
+extern int mdmon_pid(char *devnm);
extern int check_env(char *name);
extern __u32 random32(void);
-extern int start_mdmon(int devnum);
+extern int start_mdmon(char *devnm);
-extern char *devnum2devname(int num);
-extern int devname2devnum(char *name);
-extern int stat2devnum(struct stat *st);
-extern int fd2devnum(int fd);
+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);
+void abort_reshape(struct mdinfo *sra);
-static inline int dev2major(int d)
-{
- if (d >= 0)
- return MD_MAJOR;
- else
- return get_mdp_major();
-}
+void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0);
-static inline int dev2minor(int d)
-{
- if (d >= 0)
- return d;
- return (-1-d) << MdpMinorShift;
-}
+extern void fmt_devname(char *name, int num);
+extern char *stat2devnm(struct stat *st);
+extern char *fd2devnm(int fd);
-static inline int ROUND_UP(int a, int base)
-{
- return ((a+base-1)/base)*base;
-}
+#define _ROUND_UP(val, base) (((val) + (base) - 1) & ~(base - 1))
+#define ROUND_UP(val, base) _ROUND_UP(val, (typeof(val))(base))
+#define ROUND_UP_PTR(ptr, base) ((typeof(ptr)) \
+ (ROUND_UP((unsigned long)(ptr), base)))
static inline int is_subarray(char *vers)
{
/* The version string for a 'subarray' (an array in a container)
- * is
+ * 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)
return ret;
}
+#define pr_err(fmt ...) fprintf(stderr, Name ": " fmt)
+#define cont_err(fmt ...) fprintf(stderr, " " fmt)
+
+void *xmalloc(size_t len);
+void *xrealloc(void *ptr, size_t len);
+void *xcalloc(size_t num, size_t size);
+char *xstrdup(const char *str);
+
#define LEVEL_MULTIPATH (-4)
#define LEVEL_LINEAR (-1)
#define LEVEL_FAULTY (-5)
#define LEVEL_CONTAINER (-100)
#define LEVEL_UNSUPPORTED (-200)
-
/* faulty stuff */
#define WriteTransient 0
#define ModeMask 0x1f
#define ModeShift 5
-
#ifdef __TINYC__
#undef minor
#undef major
#define ALGORITHM_ROTATING_N_RESTART 9 /* DDF PRL=6 RLQ=2 */
#define ALGORITHM_ROTATING_N_CONTINUE 10 /*DDF PRL=6 RLQ=3 */
-
/* For every RAID5 algorithm we define a RAID6 algorithm
* with exactly the same layout for data and parity, and
* with the Q block always on the last device (N-1).
#define PATH_MAX 4096
#endif
+#define RESYNC_NONE -1
+#define RESYNC_DELAYED -2
+#define RESYNC_PENDING -3
+#define RESYNC_UNKNOWN -4
+
+/* When using "GET_DISK_INFO" it isn't certain how high
+ * we need to check. So we impose an absolute limit of
+ * MAX_DISKS. This needs to be much more than the largest
+ * number of devices any metadata can support. Currently
+ * v1.x can support 1920
+ */
+#define MAX_DISKS 4096
+
+/* Sometimes the 'size' value passed needs to mean "Maximum".
+ * In those cases with use MAX_SIZE
+ */
+#define MAX_SIZE 1
+
+/* We want to use unsigned numbers for sector counts, but need
+ * a value for 'invalid'. Use '1'.
+ */
+#define INVALID_SECTORS 1
+/* And another special number needed for --data_offset=variable */
+#define VARIABLE_OFFSET 3
projects / thirdparty / mdadm.git / blobdiff