#define srandom srand
#endif
-
#include <linux/kdev_t.h>
/*#include <linux/fs.h> */
#include <sys/mount.h>
#if !defined(__KLIBC__)
#if BYTE_ORDER == LITTLE_ENDIAN
-#define __cpu_to_le16(_x) (_x)
-#define __cpu_to_le32(_x) (_x)
-#define __cpu_to_le64(_x) (_x)
-#define __le16_to_cpu(_x) (_x)
-#define __le32_to_cpu(_x) (_x)
-#define __le64_to_cpu(_x) (_x)
+#define __cpu_to_le16(_x) (unsigned int)(_x)
+#define __cpu_to_le32(_x) (unsigned int)(_x)
+#define __cpu_to_le64(_x) (unsigned long long)(_x)
+#define __le16_to_cpu(_x) (unsigned int)(_x)
+#define __le32_to_cpu(_x) (unsigned int)(_x)
+#define __le64_to_cpu(_x) (unsigned long long)(_x)
#define __cpu_to_be16(_x) bswap_16(_x)
#define __cpu_to_be32(_x) bswap_32(_x)
#define __le32_to_cpu(_x) bswap_32(_x)
#define __le64_to_cpu(_x) bswap_64(_x)
-#define __cpu_to_be16(_x) (_x)
-#define __cpu_to_be32(_x) (_x)
-#define __cpu_to_be64(_x) (_x)
-#define __be16_to_cpu(_x) (_x)
-#define __be32_to_cpu(_x) (_x)
-#define __be64_to_cpu(_x) (_x)
+#define __cpu_to_be16(_x) (unsigned int)(_x)
+#define __cpu_to_be32(_x) (unsigned int)(_x)
+#define __cpu_to_be64(_x) (unsigned long long)(_x)
+#define __be16_to_cpu(_x) (unsigned int)(_x)
+#define __be32_to_cpu(_x) (unsigned int)(_x)
+#define __be64_to_cpu(_x) (unsigned long long)(_x)
#else
# error "unknown endianness."
#endif
#endif /* __KLIBC__ */
-
/*
* min()/max()/clamp() macros that also do
* strict type-checking.. See the
(void) (&_max1 == &_max2); \
_max1 > _max2 ? _max1 : _max2; })
+#define ARRAY_SIZE(x) (sizeof(x)/sizeof(x[0]))
+
/* general information that might be extracted from a superblock */
struct mdinfo {
mdu_array_info_t array;
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;
Brief,
ManageOpt,
Add,
+ AddSpare,
Remove,
Fail,
Replace,
KillOpt,
DataOffset,
ExamineBB,
+ Dump,
+ Restore,
};
enum prefix_standard {
int num;
} mapping_t;
-
struct mdstat_ent {
char *dev;
char devnm[32];
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);
int uuid[4], char *path);
extern void map_remove(struct map_ent **map, char *devnm);
extern struct map_ent *map_by_uuid(struct map_ent **map, int uuid[4]);
+#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, char *devnm);
-extern void map_free(struct map_ent *map);
extern void map_add(struct map_ent **melp,
char *devnm, char *metadata, int uuid[4], char *path);
extern int map_lock(struct map_ent **melp);
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_disk_to_scsi_id(int fd, __u32 *id);
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,
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
* 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 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_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.
* 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,
/* 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);
+ /* 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
* 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
- * types, but array is not acceptable for some reason
+ * 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,
char *subdev, unsigned long long *freesize,
int verbose);
+ /* 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 */
* (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'.
char container_devnm[32]; /* devnm of container */
void *sb;
void *info;
+ 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
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,
- int will_retry);
+extern int Manage_run(char *devname, int fd, struct context *c);
+extern int Manage_stop(char *devname, int fd, int quiet,
+ int will_retry);
extern int Manage_subdevs(char *devname, int fd,
struct mddev_dev *devlist, int verbose, int test,
char *update, int force);
extern int Wait(char *dev);
extern int WaitClean(char *dev, int sock, int verbose);
-extern int Incremental(char *devname, struct context *c,
+extern int Incremental(struct mddev_dev *devlist, struct context *c,
struct supertype *st);
extern void RebuildMap(void);
-extern int IncrementalScan(int verbose);
+extern int IncrementalScan(struct context *c, char *devnm);
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,
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 int get_mdp_major(void);
extern int dev_open(char *dev, int flags);
extern int open_dev(char *devnm);
+extern void reopen_mddev(int mdfd);
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 struct mddev_ident *conf_get_ident(char *dev);
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 int assemble_container_content(struct supertype *st, int mdfd,
struct mdinfo *content,
struct context *c,
- char *chosen_name);
+ char *chosen_name, int *result);
+#define INCR_NO 1
+#define INCR_UNSAFE 2
+#define INCR_ALREADY 4
+#define INCR_YES 8
extern struct mdinfo *container_choose_spares(struct supertype *st,
unsigned long long min_size,
struct domainlist *domlist,
extern char *find_free_devnm(int use_partitions);
extern void put_md_name(char *name);
+extern char *devid2kname(int devid);
extern char *devid2devnm(int devid);
extern int devnm2devid(char *devnm);
extern char *get_md_name(char *devnm);
int dests, int *destfd, unsigned long long *destoffsets);
void abort_reshape(struct mdinfo *sra);
+void *super1_make_v0(struct supertype *st, struct mdinfo *info, mdp_super_t *sb0);
+
extern void fmt_devname(char *name, int num);
extern char *stat2devnm(struct stat *st);
extern char *fd2devnm(int fd);
+extern int in_initrd(void);
+
#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)) \
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 arrays which mdmon must not
* reconfigure. They might be read-only
#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).
projects / thirdparty / mdadm.git / blobdiff