258 lines
7.0 KiB
C
258 lines
7.0 KiB
C
/*
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* mdadm - manage Linux "md" devices aka RAID arrays.
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*
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* Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
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*
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*
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* Author: Neil Brown
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* Email: <neilb@cse.unsw.edu.au>
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* Paper: Neil Brown
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* School of Computer Science and Engineering
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* The University of New South Wales
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* Sydney, 2052
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* Australia
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*/
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#define __USE_LARGEFILE64
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#include <unistd.h>
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#ifndef __dietlibc__
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extern __off64_t lseek64 __P ((int __fd, __off64_t __offset, int __whence));
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#endif
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#include <sys/types.h>
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#include <sys/stat.h>
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#include <stdlib.h>
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#include <time.h>
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#include <getopt.h>
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#include <fcntl.h>
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#include <stdio.h>
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#include <errno.h>
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#include <string.h>
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#ifdef __dietlibc__NONO
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int strncmp(const char *s1, const char *s2, size_t n) __THROW __pure__;
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char *strncpy(char *dest, const char *src, size_t n) __THROW;
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#include <strings.h>
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#endif
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#include <linux/kdev_t.h>
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/*#include <linux/fs.h> */
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#include <sys/mount.h>
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#include <asm/types.h>
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#include <sys/ioctl.h>
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#define MD_MAJOR 9
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#define MdpMinorShift 6
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#ifndef BLKGETSIZE64
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#define BLKGETSIZE64 _IOR(0x12,114,size_t) /* return device size in bytes (u64 *arg) */
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#endif
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#include "md_u.h"
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#include "md_p.h"
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#define Name "mdadm"
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enum mode {
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ASSEMBLE=1,
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BUILD,
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CREATE,
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MANAGE,
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MISC,
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MONITOR,
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GROW,
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};
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extern char short_options[];
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extern struct option long_options[];
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extern char Version[], Usage[], Help[], OptionHelp[],
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Help_create[], Help_build[], Help_assemble[], Help_grow[],
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Help_manage[], Help_misc[], Help_monitor[], Help_config[];
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/* structures read from config file */
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/* List of mddevice names and identifiers
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* Identifiers can be:
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* uuid=128-hex-uuid
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* super-minor=decimal-minor-number-from-superblock
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* devices=comma,separated,list,of,device,names,with,wildcards
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*
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* If multiple fields are present, the intersection of all matching
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* devices is considered
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*/
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#define UnSet (0xfffe)
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typedef struct mddev_ident_s {
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char *devname;
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int uuid_set;
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__u32 uuid[4];
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unsigned int super_minor;
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char *devices; /* comma separated list of device
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* names with wild cards
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*/
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int level;
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unsigned int raid_disks;
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unsigned int spare_disks;
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int autof; /* 1 for normal, 2 for partitioned */
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char *spare_group;
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struct mddev_ident_s *next;
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} *mddev_ident_t;
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/* List of device names - wildcards expanded */
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typedef struct mddev_dev_s {
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char *devname;
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char disposition; /* 'a' for add, 'r' for remove, 'f' for fail.
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* Not set for names read from .config
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*/
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struct mddev_dev_s *next;
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} *mddev_dev_t;
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typedef struct mapping {
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char *name;
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int num;
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} mapping_t;
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struct mdstat_ent {
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char *dev;
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int devnum;
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int active;
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char *level;
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char *pattern; /* U or up, _ for down */
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int percent; /* -1 if no resync */
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int resync; /* 1 if resync, 0 if recovery */
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struct mdstat_ent *next;
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};
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extern struct mdstat_ent *mdstat_read(int);
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extern void free_mdstat(struct mdstat_ent *ms);
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extern void mdstat_wait(int seconds);
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#ifndef Sendmail
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#define Sendmail "/usr/lib/sendmail -t"
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#endif
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extern char *map_num(mapping_t *map, int num);
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extern int map_name(mapping_t *map, char *name);
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extern mapping_t r5layout[], pers[], modes[], faultylayout[];
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extern char *map_dev(int major, int minor);
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extern int Manage_ro(char *devname, int fd, int readonly);
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extern int Manage_runstop(char *devname, int fd, int runstop);
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extern int Manage_resize(char *devname, int fd, long long size, int raid_disks);
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extern int Manage_reconfig(char *devname, int fd, int layout);
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extern int Manage_subdevs(char *devname, int fd,
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mddev_dev_t devlist);
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extern int Grow_Add_device(char *devname, int fd, char *newdev);
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extern int Assemble(char *mddev, int mdfd,
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mddev_ident_t ident,
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char *conffile,
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mddev_dev_t devlist,
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int readonly, int runstop,
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char *update,
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int verbose, int force);
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extern int Build(char *mddev, int mdfd, int chunk, int level, int layout,
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int raiddisks,
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mddev_dev_t devlist, int assume_clean);
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extern int Create(char *mddev, int mdfd,
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int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks,
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int subdevs, mddev_dev_t devlist,
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int runstop, int verbose, int force);
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extern int Detail(char *dev, int brief, int test);
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extern int Query(char *dev);
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extern int Examine(mddev_dev_t devlist, int brief, int scan, int SparcAdjust);
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extern int Monitor(mddev_dev_t devlist,
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char *mailaddr, char *alert_cmd,
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int period, int daemonise, int scan, int oneshot,
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char *config, int test, char *pidfile);
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extern int Kill(char *dev, int force);
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extern int md_get_version(int fd);
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extern int get_linux_version(void);
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extern int parse_uuid(char *str, int uuid[4]);
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extern int check_ext2(int fd, char *name);
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extern int check_reiser(int fd, char *name);
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extern int check_raid(int fd, char *name);
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extern int get_mdp_major(void);
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extern int is_standard(char *dev);
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extern mddev_ident_t conf_get_ident(char *conffile, char *dev);
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extern mddev_dev_t conf_get_devs(char *conffile);
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extern char *conf_get_mailaddr(char *conffile);
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extern char *conf_get_program(char *conffile);
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extern char *conf_line(FILE *file);
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extern char *conf_word(FILE *file, int allow_key);
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extern void free_line(char *line);
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extern int match_oneof(char *devices, char *devname);
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extern int load_super(int fd, mdp_super_t *super);
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extern void uuid_from_super(int uuid[4], mdp_super_t *super);
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extern int same_uuid(int a[4], int b[4]);
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extern int compare_super(mdp_super_t *first, mdp_super_t *second);
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extern unsigned long calc_sb_csum(mdp_super_t *super);
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extern int store_super(int fd, mdp_super_t *super);
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extern int enough(int level, int raid_disks, int avail_disks);
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extern int ask(char *mesg);
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extern char *human_size(long long bytes);
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char *human_size_brief(long long bytes);
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extern void put_md_name(char *name);
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extern char *get_md_name(int dev);
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extern char DefaultConfFile[];
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extern int open_mddev(char *dev, int autof);
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#define LEVEL_MULTIPATH (-4)
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#define LEVEL_LINEAR (-1)
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#define LEVEL_FAULTY (-5)
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/* faulty stuff */
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#define WriteTransient 0
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#define ReadTransient 1
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#define WritePersistent 2
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#define ReadPersistent 3
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#define WriteAll 4 /* doesn't go to device */
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#define ReadFixable 5
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#define Modes 6
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#define ClearErrors 31
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#define ClearFaults 30
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#define AllPersist 100 /* internal use only */
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#define NoPersist 101
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#define ModeMask 0x1f
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#define ModeShift 5
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