/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* Australia
*/
-#define __USE_LARGEFILE64
+#define _GNU_SOURCE
#include <unistd.h>
+#ifndef __dietlibc__
extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
+#endif
#include <sys/types.h>
#include <sys/stat.h>
#include <stdlib.h>
#include <time.h>
+#include <sys/time.h>
#include <getopt.h>
#include <fcntl.h>
#include <stdio.h>
#include <errno.h>
#include <string.h>
+#include <syslog.h>
+#ifdef __dietlibc__
+#include <strings.h>
+/* dietlibc has deprecated random and srandom!! */
+#define random rand
+#define srandom srand
+#endif
+
#include <linux/kdev_t.h>
/*#include <linux/fs.h> */
#include <asm/types.h>
#include <sys/ioctl.h>
#define MD_MAJOR 9
+#define MdpMinorShift 6
#ifndef BLKGETSIZE64
-#define BLKGETSIZE64 _IOR(0x12,114,sizeof(__u64)) /* return device size in bytes (u64 *arg) */
+#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
#endif
+#define DEFAULT_BITMAP_CHUNK 4096
+#define DEFAULT_BITMAP_DELAY 5
+#define DEFAULT_MAX_WRITE_BEHIND 256
#include "md_u.h"
#include "md_p.h"
+#include "bitmap.h"
+
+#include <endian.h>
+/* Redhat don't like to #include <asm/byteorder.h>, and
+ * some time include <linux/byteorder/xxx_endian.h> isn't enough,
+ * and there is no standard conversion function so... */
+/* And dietlibc doesn't think byteswap is ok, so.. */
+/* #include <byteswap.h> */
+#define bswap_16(x) (((x) & 0x00ffU) << 8 | \
+ ((x) & 0xff00U) >> 8)
+#define bswap_32(x) (((x) & 0x000000ffU) << 24 | \
+ ((x) & 0xff000000U) >> 24 | \
+ ((x) & 0x0000ff00U) << 8 | \
+ ((x) & 0x00ff0000U) >> 8)
+#define bswap_64(x) (((x) & 0x00000000000000ffULL) << 56 | \
+ ((x) & 0xff00000000000000ULL) >> 56 | \
+ ((x) & 0x000000000000ff00ULL) << 40 | \
+ ((x) & 0x00ff000000000000ULL) >> 40 | \
+ ((x) & 0x0000000000ff0000ULL) << 24 | \
+ ((x) & 0x0000ff0000000000ULL) >> 24 | \
+ ((x) & 0x00000000ff000000ULL) << 8 | \
+ ((x) & 0x000000ff00000000ULL) >> 8)
+
+#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)
+#elif BYTE_ORDER == BIG_ENDIAN
+#define __cpu_to_le16(_x) bswap_16(_x)
+#define __cpu_to_le32(_x) bswap_32(_x)
+#define __cpu_to_le64(_x) bswap_64(_x)
+#define __le16_to_cpu(_x) bswap_16(_x)
+#define __le32_to_cpu(_x) bswap_32(_x)
+#define __le64_to_cpu(_x) bswap_64(_x)
+#else
+# error "unknown endianness."
+#endif
+
+
+
+/* general information that might be extracted from a superblock */
+struct mdinfo {
+ mdu_array_info_t array;
+ mdu_disk_info_t disk;
+ __u64 events;
+ int uuid[4];
+ char name[33];
+ unsigned long long data_offset;
+ unsigned long long component_size;
+ int reshape_active;
+ unsigned long long reshape_progress;
+ int new_level, delta_disks, new_layout, new_chunk;
+};
+
+struct createinfo {
+ int uid;
+ int gid;
+ int autof;
+ int mode;
+ int symlinks;
+ struct supertype *supertype;
+};
#define Name "mdadm"
MANAGE,
MISC,
MONITOR,
+ GROW,
};
extern char short_options[];
+extern char short_bitmap_auto_options[];
extern struct option long_options[];
-extern char Version[], Usage[], Help[],
- Help_create[], Help_build[], Help_assemble[],
+extern char Version[], Usage[], Help[], OptionHelp[],
+ Help_create[], Help_build[], Help_assemble[], Help_grow[],
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'.
+ */
+enum special_options {
+ AssumeClean = 2,
+ BitmapChunk,
+ WriteBehind,
+ ReAdd,
+ NoDegraded,
+ Sparc22,
+ BackupFile,
+ HomeHost,
+ AutoHomeHost,
+ Symlinks,
+};
+
/* structures read from config file */
/* List of mddevice names and identifiers
* Identifiers can be:
* If multiple fields are present, the intersection of all matching
* devices is considered
*/
+#define UnSet (0xfffe)
typedef struct mddev_ident_s {
- char *devname;
+ char *devname;
- int uuid_set;
- __u32 uuid[4];
+ int uuid_set;
+ int uuid[4];
+ char name[33];
- int super_minor; /* -1 if not set */
+ unsigned int super_minor;
- char *devices; /* comma separated list of device
+ char *devices; /* comma separated list of device
* names with wild cards
*/
- int level; /* -10 if not set */
- int raid_disks; /* -1 if not set */
- char *spare_group;
+ int level;
+ unsigned int raid_disks;
+ unsigned int spare_disks;
+ struct supertype *st;
+ int autof; /* 1 for normal, 2 for partitioned */
+ char *spare_group;
+ char *bitmap_file;
+ int bitmap_fd;
+
struct mddev_ident_s *next;
} *mddev_ident_t;
char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
* Not set for names read from .config
*/
+ char writemostly;
+ char re_add;
+ char used; /* set when used */
struct mddev_dev_s *next;
} *mddev_dev_t;
char *level;
char *pattern; /* U or up, _ for down */
int percent; /* -1 if no resync */
+ int resync; /* 1 if resync, 0 if recovery */
struct mdstat_ent *next;
};
-extern struct mdstat_ent *mdstat_read(void);
+extern struct mdstat_ent *mdstat_read(int hold, int start);
extern void free_mdstat(struct mdstat_ent *ms);
+extern void mdstat_wait(int seconds);
+
+/* Data structure for holding info read from sysfs */
+struct sysdev {
+ char name[20];
+ int role;
+ int major, minor;
+ unsigned long long offset, size;
+ int state;
+ int errors;
+ struct sysdev *next;
+};
+struct sysarray {
+ char name[20];
+ struct sysdev *devs;
+ int chunk;
+ unsigned long long component_size;
+ int layout;
+ int level;
+ int spares;
+ int cache_size;
+ int mismatch_cnt;
+};
+/* various details can be requested */
+#define GET_LEVEL 1
+#define GET_LAYOUT 2
+#define GET_COMPONENT 4
+#define GET_CHUNK 8
+#define GET_CACHE 16
+#define GET_MISMATCH 32
+
+#define GET_DEVS 1024 /* gets role, major, minor */
+#define GET_OFFSET 2048
+#define GET_SIZE 4096
+#define GET_STATE 8192
+#define GET_ERROR 16384
+
+/* If fd >= 0, get the array it is open on,
+ * else use devnum. >=0 -> major9. <0.....
+ */
+extern struct sysarray *sysfs_read(int fd, int devnum, unsigned long options);
+extern int sysfs_set_str(struct sysarray *sra, struct sysdev *dev,
+ char *name, char *val);
+extern int sysfs_set_num(struct sysarray *sra, struct sysdev *dev,
+ char *name, unsigned long long val);
+extern int sysfs_get_ll(struct sysarray *sra, struct sysdev *dev,
+ char *name, unsigned long long *val);
+
+
+extern int save_stripes(int *source, unsigned long long *offsets,
+ int raid_disks, int chunk_size, int level, int layout,
+ int nwrites, int *dest,
+ unsigned long long start, unsigned long long length);
+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);
#ifndef Sendmail
#define Sendmail "/usr/lib/sendmail -t"
#endif
+#define SYSLOG_FACILITY LOG_DAEMON
+
extern char *map_num(mapping_t *map, int num);
extern int map_name(mapping_t *map, char *name);
-extern mapping_t r5layout[], pers[], modes[];
+extern mapping_t r5layout[], pers[], modes[], faultylayout[];
+
+extern char *map_dev(int major, int minor, int create);
+
+
+extern struct superswitch {
+ void (*examine_super)(void *sbv, char *homehost);
+ void (*brief_examine_super)(void *sbv);
+ void (*detail_super)(void *sbv, char *homehost);
+ void (*brief_detail_super)(void *sbv);
+ void (*uuid_from_super)(int uuid[4], void *sbv);
+ void (*getinfo_super)(struct mdinfo *info, void *sbv);
+ int (*match_home)(void *sbv, char *homehost);
+ int (*update_super)(struct mdinfo *info, void *sbv, char *update,
+ char *devname, int verbose,
+ int uuid_set, char *homehost);
+ int (*init_super)(struct supertype *st, void **sbp, mdu_array_info_t *info, unsigned long long size, char *name, char *homehost, int *uuid);
+ void (*add_to_super)(void *sbv, mdu_disk_info_t *dinfo);
+ int (*store_super)(struct supertype *st, int fd, void *sbv);
+ int (*write_init_super)(struct supertype *st, void *sbv, mdu_disk_info_t *dinfo, char *devname);
+ int (*compare_super)(void **firstp, void *secondv);
+ int (*load_super)(struct supertype *st, int fd, void **sbp, char *devname);
+ struct supertype * (*match_metadata_desc)(char *arg);
+ __u64 (*avail_size)(struct supertype *st, __u64 size);
+ int (*add_internal_bitmap)(struct supertype *st, void *sbv, int *chunkp,
+ int delay, int write_behind,
+ unsigned long long size, int may_change, int major);
+ void (*locate_bitmap)(struct supertype *st, int fd, void *sbv);
+ int (*write_bitmap)(struct supertype *st, int fd, void *sbv);
+ int major;
+ int swapuuid; /* true if uuid is bigending rather than hostendian */
+} super0, super1, *superlist[];
+
+struct supertype {
+ struct superswitch *ss;
+ int minor_version;
+ int max_devs;
+};
+
+extern struct supertype *super_by_version(int vers, int minor);
+extern struct supertype *guess_super(int fd);
+extern int get_dev_size(int fd, char *dname, unsigned long long *sizep);
+
+#if __GNUC__ < 3
+struct stat64;
+#endif
-extern char *map_dev(int major, int minor);
+#define HAVE_NFTW we assume
+#define HAVE_FTW
+
+#ifdef UCLIBC
+# include <features.h>
+# ifndef __UCLIBC_HAS_FTW__
+# undef HAVE_FTW
+# undef HAVE_NFTW
+# endif
+#endif
+
+#ifdef __dietlibc__
+# undef HAVE_NFTW
+#endif
+
+#ifndef HAVE_NFTW
+# define FTW_PHYS 1
+# ifndef HAVE_FTW
+ struct FTW {};
+# endif
+#endif
+
+#ifdef HAVE_FTW
+# include <ftw.h>
+#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);
+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_reconfig(char *devname, int fd, int layout);
extern int Manage_subdevs(char *devname, int fd,
- mddev_dev_t devlist);
+ mddev_dev_t devlist, int verbose);
+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, int layout, int chunksize, int raid_disks);
+extern int Grow_restart(struct supertype *st, struct mdinfo *info,
+ int *fdlist, int cnt, char *backup_file);
-extern int Assemble(char *mddev, int mdfd,
+extern int Assemble(struct supertype *st, char *mddev, int mdfd,
mddev_ident_t ident,
- char *conffile,
- mddev_dev_t devlist,
+ mddev_dev_t devlist, char *backup_file,
int readonly, int runstop,
- char *update,
+ char *update, char *homehost,
int verbose, int force);
-extern int Build(char *mddev, int mdfd, int chunk, int level,
+extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
int raiddisks,
- mddev_dev_t devlist);
+ mddev_dev_t devlist, int assume_clean,
+ char *bitmap_file, int bitmap_chunk, int write_behind, int delay, int verbose);
-extern int Create(char *mddev, int mdfd,
- int chunk, int level, int layout, int size, int raiddisks, int sparedisks,
+extern int Create(struct supertype *st, char *mddev, int mdfd,
+ 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 runstop, int verbose, int force, int assume_clean,
+ char *bitmap_file, int bitmap_chunk, int write_behind, int delay);
-extern int Detail(char *dev, int brief);
+extern int Detail(char *dev, int brief, int test, char *homehost);
extern int Query(char *dev);
-extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust);
+extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust,
+ struct supertype *forcest, char *homehost);
extern int Monitor(mddev_dev_t devlist,
char *mailaddr, char *alert_cmd,
- int period, int daemonise, int scan,
- char *config);
+ int period, int daemonise, int scan, int oneshot,
+ int dosyslog, int test, char *pidfile);
-extern int Kill(char *dev, int force);
+extern int Kill(char *dev, int force, int quiet);
+extern int Wait(char *dev);
+
+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 bitmap_update_uuid(int fd, int *uuid, int swap);
extern int md_get_version(int fd);
extern int get_linux_version(void);
extern int check_reiser(int fd, char *name);
extern int check_raid(int fd, char *name);
-extern mddev_ident_t conf_get_ident(char *conffile, char *dev);
-extern mddev_dev_t conf_get_devs(char *conffile);
-extern char *conf_get_mailaddr(char *conffile);
-extern char *conf_get_program(char *conffile);
+extern int get_mdp_major(void);
+extern int dev_open(char *dev, int flags);
+extern int is_standard(char *dev, int *nump);
+
+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 createinfo *conf_get_create_info(void);
+extern void set_conffile(char *file);
+extern char *conf_get_mailaddr(void);
+extern char *conf_get_mailfrom(void);
+extern char *conf_get_program(void);
+extern char *conf_get_homehost(void);
extern char *conf_line(FILE *file);
+extern char *conf_word(FILE *file, int allow_key);
extern void free_line(char *line);
extern int match_oneof(char *devices, char *devname);
-extern int load_super(int fd, mdp_super_t *super);
extern void uuid_from_super(int uuid[4], mdp_super_t *super);
-extern int same_uuid(int a[4], int b[4]);
-extern int compare_super(mdp_super_t *first, mdp_super_t *second);
-extern int calc_sb_csum(mdp_super_t *super);
-extern int store_super(int fd, mdp_super_t *super);
-extern int enough(int level, int raid_disks, int avail_disks);
+extern int same_uuid(int a[4], int b[4], int swapuuid);
+extern void copy_uuid(void *a, int b[4], int swapuuid);
+/* extern int compare_super(mdp_super_t *first, mdp_super_t *second);*/
+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 ask(char *mesg);
+extern unsigned long long get_component_size(int fd);
+extern void remove_partitions(int fd);
extern char *human_size(long long bytes);
extern char *get_md_name(int dev);
extern char DefaultConfFile[];
+
+extern int open_mddev(char *dev, int autof);
+
+
+#define LEVEL_MULTIPATH (-4)
+#define LEVEL_LINEAR (-1)
+#define LEVEL_FAULTY (-5)
+
+
+/* faulty stuff */
+
+#define WriteTransient 0
+#define ReadTransient 1
+#define WritePersistent 2
+#define ReadPersistent 3
+#define WriteAll 4 /* doesn't go to device */
+#define ReadFixable 5
+#define Modes 6
+
+#define ClearErrors 31
+#define ClearFaults 30
+
+#define AllPersist 100 /* internal use only */
+#define NoPersist 101
+
+#define ModeMask 0x1f
+#define ModeShift 5
+
+
+#ifdef __TINYC__
+#undef minor
+#undef major
+#undef makedev
+#define minor(x) ((x)&0xff)
+#define major(x) (((x)>>8)&0xff)
+#define makedev(M,m) (((M)<<8) | (m))
+#endif
+
+/* for raid5 */
+#define ALGORITHM_LEFT_ASYMMETRIC 0
+#define ALGORITHM_RIGHT_ASYMMETRIC 1
+#define ALGORITHM_LEFT_SYMMETRIC 2
+#define ALGORITHM_RIGHT_SYMMETRIC 3
projects / thirdparty / mdadm.git / blobdiff