2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
7 * This program is free software; you can redistribute it and/or modify
8 * it under the terms of the GNU General Public License as published by
9 * the Free Software Foundation; either version 2 of the License, or
10 * (at your option) any later version.
12 * This program is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 * GNU General Public License for more details.
17 * You should have received a copy of the GNU General Public License
18 * along with this program; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 * Email: <neilb@suse.de>
24 * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
25 * Paul Clements, SteelEye Technology, Inc.
33 int main(int argc
, char *argv
[])
44 long long array_size
= -1;
47 char *layout_str
= NULL
;
49 int max_disks
= MD_SB_DISKS
; /* just a default */
51 struct mddev_ident_s ident
;
52 char *configfile
= NULL
;
61 char *bitmap_file
= NULL
;
62 char *backup_file
= NULL
;
63 int bitmap_chunk
= UnSet
;
65 mddev_dev_t devlist
= NULL
;
66 mddev_dev_t
*devlistend
= & devlist
;
76 char *symlinks
= NULL
;
77 /* autof indicates whether and how to create device node.
78 * bottom 3 bits are style. Rest (when shifted) are number of parts
80 * 1 - don't create (no)
81 * 2 - if is_standard, then create (yes)
82 * 3 - create as 'md' - reject is_standard mdp (md)
83 * 4 - create as 'mdp' - reject is_standard md (mdp)
84 * 5 - default to md if not is_standard (md in config file)
85 * 6 - default to mdp if not is_standard (part, or mdp in config file)
89 char *homehost
= NULL
;
90 char sys_hostname
[256];
91 int require_homehost
= 1;
92 char *mailaddr
= NULL
;
99 struct supertype
*ss
= NULL
;
102 char *shortopt
= short_options
;
105 int auto_update_home
= 0;
112 srandom(time(0) ^ getpid());
116 ident
.raid_disks
= UnSet
;
117 ident
.super_minor
= UnSet
;
119 ident
.spare_group
= NULL
;
122 ident
.bitmap_fd
= -1;
123 ident
.bitmap_file
= NULL
;
125 ident
.container
= NULL
;
128 while ((option_index
= -1) ,
129 (opt
=getopt_long(argc
, argv
,
130 shortopt
, long_options
,
131 &option_index
)) != -1) {
133 /* firstly, some mode-independent options */
136 if (option_index
> 0 &&
137 strcmp(long_options
[option_index
].name
, "help-options")==0)
144 fputs(Version
, stderr
);
154 if (mode
== ASSEMBLE
|| mode
== BUILD
|| mode
== CREATE
|| mode
== GROW
||
155 mode
== INCREMENTAL
|| mode
== MANAGE
)
156 break; /* b means bitmap */
164 if (strcasecmp(optarg
, "<ignore>") == 0)
165 require_homehost
= 0;
172 fputs(Usage
, stderr
);
175 /* second, figure out the mode.
176 * Some options force the mode. Others
177 * set the mode if it isn't already
181 case '@': /* just incase they say --manage */
183 shortopt
= short_bitmap_options
;
188 case ReAdd
: /* re-add */
191 shortopt
= short_bitmap_options
;
195 case 'A': newmode
= ASSEMBLE
; shortopt
= short_bitmap_auto_options
; break;
196 case 'B': newmode
= BUILD
; shortopt
= short_bitmap_auto_options
; break;
197 case 'C': newmode
= CREATE
; shortopt
= short_bitmap_auto_options
; break;
198 case 'F': newmode
= MONITOR
;break;
199 case 'G': newmode
= GROW
;
200 shortopt
= short_bitmap_options
;
202 case 'I': newmode
= INCREMENTAL
;
203 shortopt
= short_bitmap_auto_options
; break;
205 newmode
= AUTODETECT
; break;
211 case 'Q': newmode
= MISC
; break;
219 case 'K': if (!mode
) newmode
= MISC
; break;
221 if (mode
&& newmode
== mode
) {
222 /* everybody happy ! */
223 } else if (mode
&& newmode
!= mode
) {
225 fprintf(stderr
, Name
": ");
226 if (option_index
>= 0)
227 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
229 fprintf(stderr
, "-%c", opt
);
230 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
231 map_num(modes
, newmode
),
232 map_num(modes
, mode
));
234 } else if (!mode
&& newmode
) {
237 /* special case of -c --help */
239 ( strncmp(optarg
, "--h", 3)==0 ||
240 strncmp(optarg
, "-h", 2)==0)) {
241 fputs(Help_config
, stdout
);
245 /* If first option is a device, don't force the mode yet */
247 if (devs_found
== 0) {
248 dv
= malloc(sizeof(*dv
));
250 fprintf(stderr
, Name
": malloc failed\n");
253 dv
->devname
= optarg
;
254 dv
->disposition
= devmode
;
255 dv
->writemostly
= writemostly
;
261 devlistend
= &dv
->next
;
266 /* No mode yet, and this is the second device ... */
267 fprintf(stderr
, Name
": An option must be given to set the mode before a second device\n"
268 " (%s) is listed\n", optarg
);
271 if (option_index
>= 0)
272 fprintf(stderr
, Name
": --%s", long_options
[option_index
].name
);
274 fprintf(stderr
, Name
": -%c", opt
);
275 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
279 /* if we just set the mode, then done */
293 /* an undecorated option - must be a device name.
295 if (devs_found
> 0 && mode
== '@' && !devmode
) {
296 fprintf(stderr
, Name
": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg
);
299 if (devs_found
> 0 && mode
== 'G' && !devmode
) {
300 fprintf(stderr
, Name
": Must give one of -a for devices do add: %s\n", optarg
);
303 dv
= malloc(sizeof(*dv
));
305 fprintf(stderr
, Name
": malloc failed\n");
308 dv
->devname
= optarg
;
309 dv
->disposition
= devmode
;
310 dv
->writemostly
= writemostly
;
316 devlistend
= &dv
->next
;
322 /* We've got a mode, and opt is now something else which
323 * could depend on the mode */
324 #define O(a,b) ((a<<8)|b)
325 switch (O(mode
,opt
)) {
328 case O(BUILD
,'c'): /* chunk or rounding */
330 fprintf(stderr
, Name
": chunk/rounding may only be specified once. "
331 "Second value is %s.\n", optarg
);
334 chunk
= strtol(optarg
, &c
, 10);
335 if (!optarg
[0] || *c
|| chunk
<4 || ((chunk
-1)&chunk
)) {
336 fprintf(stderr
, Name
": invalid chunk/rounding value: %s\n",
343 case O(ASSEMBLE
,AutoHomeHost
):
344 auto_update_home
= 1;
347 case O(INCREMENTAL
, 'e'):
349 case O(ASSEMBLE
,'e'):
350 case O(MISC
,'e'): /* set metadata (superblock) information */
352 fprintf(stderr
, Name
": metadata information already given\n");
355 for(i
=0; !ss
&& superlist
[i
]; i
++)
356 ss
= superlist
[i
]->match_metadata_desc(optarg
);
359 fprintf(stderr
, Name
": unrecognised metadata identifier: %s\n", optarg
);
362 max_disks
= ss
->max_devs
;
368 /* set write-mostly for following devices */
373 /* clear write-mostly for following devices */
380 case O(BUILD
,'z'): /* size */
382 fprintf(stderr
, Name
": size may only be specified once. "
383 "Second value is %s.\n", optarg
);
386 if (strcmp(optarg
, "max")==0)
389 size
= parse_size(optarg
);
391 fprintf(stderr
, Name
": invalid size: %s\n",
395 /* convert sectors to K */
400 case O(GROW
,'Z'): /* array size */
401 if (array_size
>= 0) {
402 fprintf(stderr
, Name
": array-size may only be specified once. "
403 "Second value is %s.\n", optarg
);
406 if (strcmp(optarg
, "max") == 0)
409 array_size
= parse_size(optarg
);
410 if (array_size
<= 0) {
411 fprintf(stderr
, Name
": invalid array size: %s\n",
420 case O(BUILD
,'l'): /* set raid level*/
421 if (level
!= UnSet
) {
422 fprintf(stderr
, Name
": raid level may only be set once. "
423 "Second value is %s.\n", optarg
);
426 level
= map_name(pers
, optarg
);
427 if (level
== UnSet
) {
428 fprintf(stderr
, Name
": invalid raid level: %s\n",
432 if (level
!= 0 && level
!= LEVEL_LINEAR
&& level
!= 1 &&
433 level
!= LEVEL_MULTIPATH
&& level
!= LEVEL_FAULTY
&&
436 fprintf(stderr
, Name
": Raid level %s not permitted with --build.\n",
440 if (sparedisks
> 0 && level
< 1 && level
>= -1) {
441 fprintf(stderr
, Name
": raid level %s is incompatible with spare-devices setting.\n",
448 case O(GROW
, 'p'): /* new layout */
450 fprintf(stderr
,Name
": layout may only be sent once. "
451 "Second value was %s\n", optarg
);
455 /* 'Grow' will parse the value */
458 case O(CREATE
,'p'): /* raid5 layout */
459 case O(BUILD
,'p'): /* faulty layout */
460 if (layout
!= UnSet
) {
461 fprintf(stderr
,Name
": layout may only be sent once. "
462 "Second value was %s\n", optarg
);
467 fprintf(stderr
, Name
": layout not meaningful for %s arrays.\n",
468 map_num(pers
, level
));
471 fprintf(stderr
, Name
": raid level must be given before layout.\n");
475 layout
= map_name(r5layout
, optarg
);
477 fprintf(stderr
, Name
": layout %s not understood for raid5.\n",
483 layout
= map_name(r6layout
, optarg
);
485 fprintf(stderr
, Name
": layout %s not understood for raid6.\n",
492 layout
= parse_layout_10(optarg
);
494 fprintf(stderr
, Name
": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
502 layout
= parse_layout_faulty(optarg
);
504 fprintf(stderr
, Name
": layout %s not understood for faulty.\n",
512 case O(CREATE
,AssumeClean
):
513 case O(BUILD
,AssumeClean
): /* assume clean */
519 case O(BUILD
,'n'): /* number of raid disks */
521 fprintf(stderr
, Name
": raid-devices set twice: %d and %s\n",
525 raiddisks
= strtol(optarg
, &c
, 10);
526 if (!optarg
[0] || *c
|| raiddisks
<=0) {
527 fprintf(stderr
, Name
": invalid number of raid devices: %s\n",
531 ident
.raid_disks
= raiddisks
;
534 case O(CREATE
,'x'): /* number of spare (eXtra) discs */
536 fprintf(stderr
,Name
": spare-devices set twice: %d and %s\n",
540 if (level
!= UnSet
&& level
<= 0 && level
>= -1) {
541 fprintf(stderr
, Name
": spare-devices setting is incompatible with raid level %d\n",
545 sparedisks
= strtol(optarg
, &c
, 10);
546 if (!optarg
[0] || *c
|| sparedisks
< 0) {
547 fprintf(stderr
, Name
": invalid number of spare-devices: %s\n",
555 case O(INCREMENTAL
,'a'):
556 case O(ASSEMBLE
,'a'): /* auto-creation of device node */
557 autof
= parse_auto(optarg
, "--auto flag", 0);
560 case O(CREATE
,Symlinks
):
561 case O(BUILD
,Symlinks
):
562 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
566 case O(BUILD
,'f'): /* force honouring '-n 1' */
567 case O(GROW
,'f'): /* ditto */
568 case O(CREATE
,'f'): /* force honouring of device list */
569 case O(ASSEMBLE
,'f'): /* force assembly */
570 case O(MISC
,'f'): /* force zero */
574 /* now for the Assemble options */
575 case O(CREATE
,'u'): /* uuid of array */
576 case O(ASSEMBLE
,'u'): /* uuid of array */
577 if (ident
.uuid_set
) {
578 fprintf(stderr
, Name
": uuid cannot be set twice. "
579 "Second value %s.\n", optarg
);
582 if (parse_uuid(optarg
, ident
.uuid
))
585 fprintf(stderr
,Name
": Bad uuid: %s\n", optarg
);
591 case O(ASSEMBLE
,'N'):
593 fprintf(stderr
, Name
": name cannot be set twice. "
594 "Second value %s.\n", optarg
);
597 if (strlen(optarg
) > 32) {
598 fprintf(stderr
, Name
": name '%s' is too long, 32 chars max.\n",
602 strcpy(ident
.name
, optarg
);
605 case O(ASSEMBLE
,'m'): /* super-minor for array */
606 if (ident
.super_minor
!= UnSet
) {
607 fprintf(stderr
, Name
": super-minor cannot be set twice. "
608 "Second value: %s.\n", optarg
);
611 if (strcmp(optarg
, "dev")==0)
612 ident
.super_minor
= -2;
614 ident
.super_minor
= strtoul(optarg
, &cp
, 10);
615 if (!optarg
[0] || *cp
) {
616 fprintf(stderr
, Name
": Bad super-minor number: %s.\n", optarg
);
622 case O(ASSEMBLE
,'U'): /* update the superblock */
624 fprintf(stderr
, Name
": Can only update one aspect of superblock, both %s and %s given.\n",
629 if (strcmp(update
, "sparc2.2")==0)
631 if (strcmp(update
, "super-minor") == 0)
633 if (strcmp(update
, "summaries")==0)
635 if (strcmp(update
, "resync")==0)
637 if (strcmp(update
, "uuid")==0)
639 if (strcmp(update
, "name")==0)
641 if (strcmp(update
, "homehost")==0)
643 if (strcmp(update
, "devicesize")==0)
645 if (strcmp(update
, "byteorder")==0) {
647 fprintf(stderr
, Name
": must not set metadata type with --update=byteorder.\n");
650 for(i
=0; !ss
&& superlist
[i
]; i
++)
651 ss
= superlist
[i
]->match_metadata_desc("0.swap");
653 fprintf(stderr
, Name
": INTERNAL ERROR cannot find 0.swap\n");
659 if (strcmp(update
,"?") == 0 ||
660 strcmp(update
, "help") == 0) {
662 fprintf(outf
, Name
": ");
666 Name
": '--update=%s' is invalid. ",
669 fprintf(outf
, "Valid --update options are:\n"
670 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
671 " 'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
672 exit(outf
== stdout
? 0 : 2);
674 case O(INCREMENTAL
,NoDegraded
):
675 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
676 runstop
= -1; /* --stop isn't allowed for --assemble,
677 * so we overload slightly */
680 case O(ASSEMBLE
,'c'): /* config file */
681 case O(INCREMENTAL
, 'c'):
685 fprintf(stderr
, Name
": configfile cannot be set twice. "
686 "Second value is %s.\n", optarg
);
690 set_conffile(configfile
);
691 /* FIXME possibly check that config file exists. Even parse it */
693 case O(ASSEMBLE
,'s'): /* scan */
696 case O(INCREMENTAL
,'s'):
700 case O(MONITOR
,'m'): /* mail address */
702 fprintf(stderr
, Name
": only specify one mailaddress. %s ignored.\n",
708 case O(MONITOR
,'p'): /* alert program */
710 fprintf(stderr
, Name
": only specify one alter program. %s ignored.\n",
716 case O(MONITOR
,'r'): /* rebuild increments */
717 increments
= atoi(optarg
);
718 if (increments
>99 || increments
<1) {
719 fprintf(stderr
, Name
": please specify positive integer between 1 and 99 as rebuild increments.\n");
724 case O(MONITOR
,'d'): /* delay in seconds */
726 case O(BUILD
,'d'): /* delay for bitmap updates */
729 fprintf(stderr
, Name
": only specify delay once. %s ignored.\n",
732 delay
= strtol(optarg
, &c
, 10);
733 if (!optarg
[0] || *c
|| delay
<1) {
734 fprintf(stderr
, Name
": invalid delay: %s\n",
740 case O(MONITOR
,'f'): /* daemonise */
743 case O(MONITOR
,'i'): /* pid */
745 fprintf(stderr
, Name
": only specify one pid file. %s ignored.\n",
750 case O(MONITOR
,'1'): /* oneshot */
753 case O(MONITOR
,'t'): /* test */
756 case O(MONITOR
,'y'): /* log messages to syslog */
757 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
761 /* now the general management options. Some are applicable
762 * to other modes. None have arguments.
765 case O(MANAGE
,'a'): /* add a drive */
769 case O(MANAGE
,ReAdd
):
773 case O(MANAGE
,'r'): /* remove a drive */
776 case O(MANAGE
,'f'): /* set faulty */
779 case O(INCREMENTAL
,'R'):
781 case O(ASSEMBLE
,'R'):
783 case O(CREATE
,'R'): /* Run the array */
785 fprintf(stderr
, Name
": Cannot both Stop and Run an array\n");
792 fprintf(stderr
, Name
": Cannot both Run and Stop an array\n");
808 case O(MISC
, Waitclean
):
809 case O(MISC
, DetailPlatform
):
810 if (devmode
&& devmode
!= opt
&&
811 (devmode
== 'E' || (opt
== 'E' && devmode
!= 'Q'))) {
812 fprintf(stderr
, Name
": --examine/-E cannot be given with -%c\n",
813 devmode
=='E'?opt
:devmode
);
822 case O(MISC
, Sparc22
):
823 if (devmode
!= 'E') {
824 fprintf(stderr
, Name
": --sparc2.2 only allowed with --examine\n");
830 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
832 fprintf(stderr
, Name
": bitmap file needed with -b in --assemble mode\n");
835 if (strcmp(optarg
, "internal")==0) {
836 fprintf(stderr
, Name
": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
839 bitmap_fd
= open(optarg
, O_RDWR
);
840 if (!*optarg
|| bitmap_fd
< 0) {
841 fprintf(stderr
, Name
": cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
844 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
847 case O(ASSEMBLE
, BackupFile
):
848 case O(GROW
, BackupFile
):
849 /* Specify a file into which grow might place a backup,
850 * or from which assemble might recover a backup
853 fprintf(stderr
, Name
": backup file already specified, rejecting %s\n", optarg
);
856 backup_file
= optarg
;
860 case O(CREATE
,'b'): /* here we create the bitmap */
861 if (strcmp(optarg
, "none") == 0) {
862 fprintf(stderr
, Name
": '--bitmap none' only"
863 " support for --grow\n");
868 if (strcmp(optarg
, "internal")== 0 ||
869 strcmp(optarg
, "none")== 0 ||
870 strchr(optarg
, '/') != NULL
) {
871 bitmap_file
= optarg
;
875 fprintf(stderr
, Name
": bitmap file must contain a '/', or be 'internal', or 'none'\n"
876 " not '%s'\n", optarg
);
879 case O(GROW
,BitmapChunk
):
880 case O(BUILD
,BitmapChunk
):
881 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
882 bitmap_chunk
= strtol(optarg
, &c
, 10);
883 if (!optarg
[0] || *c
|| bitmap_chunk
< 0 ||
884 bitmap_chunk
& (bitmap_chunk
- 1)) {
885 fprintf(stderr
, Name
": invalid bitmap chunksize: %s\n",
889 /* convert K to B, chunk of 0K means 512B */
890 bitmap_chunk
= bitmap_chunk
? bitmap_chunk
* 1024 : 512;
893 case O(GROW
, WriteBehind
):
894 case O(BUILD
, WriteBehind
):
895 case O(CREATE
, WriteBehind
): /* write-behind mode */
896 write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
898 write_behind
= strtol(optarg
, &c
, 10);
899 if (write_behind
< 0 || *c
||
900 write_behind
> 16383) {
901 fprintf(stderr
, Name
": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
907 case O(INCREMENTAL
, 'r'):
911 /* We have now processed all the valid options. Anything else is
914 if (option_index
> 0)
915 fprintf(stderr
, Name
":option --%s not valid in %s mode\n",
916 long_options
[option_index
].name
,
917 map_num(modes
, mode
));
919 fprintf(stderr
, Name
": option -%c not valid in %s mode\n",
920 opt
, map_num(modes
, mode
));
926 char *help_text
= Help
;
928 help_text
= OptionHelp
;
931 case ASSEMBLE
: help_text
= Help_assemble
; break;
932 case BUILD
: help_text
= Help_build
; break;
933 case CREATE
: help_text
= Help_create
; break;
934 case MANAGE
: help_text
= Help_manage
; break;
935 case MISC
: help_text
= Help_misc
; break;
936 case MONITOR
: help_text
= Help_monitor
; break;
937 case GROW
: help_text
= Help_grow
; break;
938 case INCREMENTAL
:help_text
= Help_incr
; break;
940 fputs(help_text
,stdout
);
944 if (!mode
&& devs_found
) {
947 if (devlist
->disposition
== 0)
948 devlist
->disposition
= devmode
;
951 fputs(Usage
, stderr
);
956 struct createinfo
*ci
= conf_get_create_info();
958 if (strcasecmp(symlinks
, "yes") == 0)
960 else if (strcasecmp(symlinks
, "no") == 0)
963 fprintf(stderr
, Name
": option --symlinks must be 'no' or 'yes'\n");
967 /* Ok, got the option parsing out of the way
968 * hopefully it's mostly right but there might be some stuff
971 * That is mosty checked in the per-mode stuff but...
973 * For @,B,C and A without -s, the first device listed must be an md device
974 * we check that here and open it.
977 if (mode
==MANAGE
|| mode
== BUILD
|| mode
== CREATE
|| mode
== GROW
||
978 (mode
== ASSEMBLE
&& ! scan
)) {
979 if (devs_found
< 1) {
980 fprintf(stderr
, Name
": an md device must be given in this mode\n");
983 if ((int)ident
.super_minor
== -2 && autof
) {
984 fprintf(stderr
, Name
": --super-minor=dev is incompatible with --auto\n");
987 if (mode
== MANAGE
|| mode
== GROW
) {
988 mdfd
= open_mddev(devlist
->devname
, 1);
992 /* non-existent device is OK */
993 mdfd
= open_mddev(devlist
->devname
, 0);
995 fprintf(stderr
, Name
": device %s exists but is not an "
996 "md array.\n", devlist
->devname
);
999 if ((int)ident
.super_minor
== -2) {
1002 fprintf(stderr
, Name
": --super-minor=dev given, and "
1003 "listed device %s doesn't exist.\n",
1008 ident
.super_minor
= minor(stb
.st_rdev
);
1010 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1011 /* We don't really want this open yet, we just might
1012 * have wanted to check some things
1020 if (raiddisks
> max_disks
) {
1021 fprintf(stderr
, Name
": invalid number of raid devices: %d\n",
1025 if (raiddisks
== 1 && !force
&& level
!= -5) {
1026 fprintf(stderr
, Name
": '1' is an unusual number of drives for an array, so it is probably\n"
1027 " a mistake. If you really mean it you will need to specify --force before\n"
1028 " setting the number of drives.\n");
1033 if ( sparedisks
> max_disks
- raiddisks
) {
1034 fprintf(stderr
, Name
": invalid number of spare-devices: %d\n",
1040 if (homehost
== NULL
)
1041 homehost
= conf_get_homehost(&require_homehost
);
1042 if (homehost
== NULL
|| strcmp(homehost
, "<system>")==0) {
1043 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1044 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1045 homehost
= sys_hostname
;
1049 if ((mode
!= MISC
|| devmode
!= 'E') &&
1051 fprintf(stderr
, Name
": must be super-user to perform this action\n");
1055 ident
.autof
= autof
;
1060 /* readonly, add/remove, readwrite, runstop */
1062 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1063 if (!rv
&& devs_found
>1)
1064 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1065 devlist
->next
, verbose
-quiet
);
1066 if (!rv
&& readonly
< 0)
1067 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1069 rv
= Manage_runstop(devlist
->devname
, mdfd
, runstop
, quiet
);
1072 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1073 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 && !scan
) {
1074 /* Only a device has been given, so get details from config file */
1075 mddev_ident_t array_ident
= conf_get_ident(devlist
->devname
);
1076 if (array_ident
== NULL
) {
1077 fprintf(stderr
, Name
": %s not identified in config file.\n",
1083 if (array_ident
->autof
== 0)
1084 array_ident
->autof
= autof
;
1085 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1087 readonly
, runstop
, update
,
1088 homehost
, require_homehost
,
1089 verbose
-quiet
, force
);
1092 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1093 devlist
->next
, backup_file
,
1094 readonly
, runstop
, update
,
1095 homehost
, require_homehost
,
1096 verbose
-quiet
, force
);
1097 else if (devs_found
>0) {
1098 if (update
&& devs_found
> 1) {
1099 fprintf(stderr
, Name
": can only update a single array at a time\n");
1102 if (backup_file
&& devs_found
> 1) {
1103 fprintf(stderr
, Name
": can only assemble a single array when providing a backup file.\n");
1106 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1107 mddev_ident_t array_ident
= conf_get_ident(dv
->devname
);
1108 if (array_ident
== NULL
) {
1109 fprintf(stderr
, Name
": %s not identified in config file.\n",
1114 if (array_ident
->autof
== 0)
1115 array_ident
->autof
= autof
;
1116 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1118 readonly
, runstop
, update
,
1119 homehost
, require_homehost
,
1120 verbose
-quiet
, force
);
1123 mddev_ident_t a
, array_list
= conf_get_ident(NULL
);
1124 mddev_dev_t devlist
= conf_get_devs();
1126 int failures
, successes
;
1127 if (devlist
== NULL
) {
1128 fprintf(stderr
, Name
": No devices listed in conf file were found.\n");
1132 fprintf(stderr
, Name
": --update not meaningful with a --scan assembly.\n");
1136 fprintf(stderr
, Name
": --backup_file not meaningful with a --scan assembly.\n");
1139 for (a
= array_list
; a
; a
= a
->next
) {
1148 for (a
= array_list
; a
; a
= a
->next
) {
1153 strcasecmp(a
->devname
, "<ignore>") == 0)
1156 r
= Assemble(ss
, a
->devname
,
1159 readonly
, runstop
, NULL
,
1160 homehost
, require_homehost
,
1161 verbose
-quiet
, force
);
1170 } while (failures
&& successes
);
1171 if (homehost
&& cnt
== 0) {
1172 /* Maybe we can auto-assemble something.
1173 * Repeatedly call Assemble in auto-assemble mode
1178 ident
.autof
= autof
;
1180 mddev_dev_t devlist
= conf_get_devs();
1183 rv2
= Assemble(ss
, NULL
,
1186 readonly
, runstop
, NULL
,
1187 homehost
, require_homehost
,
1188 verbose
-quiet
, force
);
1194 /* found something so even though assembly failed we
1195 * want to avoid auto-updates
1197 auto_update_home
= 0;
1199 /* Incase there are stacked devices, we need to go around again */
1202 if (cnt
== 0 && auto_update_home
&& homehost
) {
1203 /* Nothing found, maybe we need to bootstrap homehost info */
1207 rv2
= Assemble(ss
, NULL
,
1210 readonly
, runstop
, "homehost",
1211 homehost
, require_homehost
,
1212 verbose
-quiet
, force
);
1218 /* Incase there are stacked devices, we need to go around again */
1222 if (cnt
== 0 && rv
== 0) {
1223 fprintf(stderr
, Name
": No arrays found in config file or automatically\n");
1227 } else if (cnt
== 0 && rv
== 0) {
1228 fprintf(stderr
, Name
": No arrays found in config file\n");
1234 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1235 if (write_behind
&& !bitmap_file
) {
1236 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1240 if (raiddisks
== 0) {
1241 fprintf(stderr
, Name
": no raid-devices specified.\n");
1247 if (strcmp(bitmap_file
, "internal")==0) {
1248 fprintf(stderr
, Name
": 'internal' bitmaps not supported with --build\n");
1253 rv
= Build(devlist
->devname
, chunk
, level
, layout
,
1254 raiddisks
, devlist
->next
, assume_clean
,
1255 bitmap_file
, bitmap_chunk
, write_behind
,
1256 delay
, verbose
-quiet
, autof
, size
);
1259 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1260 if (write_behind
&& !bitmap_file
) {
1261 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1265 if (raiddisks
== 0) {
1266 fprintf(stderr
, Name
": no raid-devices specified.\n");
1271 rv
= Create(ss
, devlist
->devname
, chunk
, level
, layout
, size
<0 ? 0 : size
,
1272 raiddisks
, sparedisks
, ident
.name
, homehost
,
1273 ident
.uuid_set
? ident
.uuid
: NULL
,
1274 devs_found
-1, devlist
->next
, runstop
, verbose
-quiet
, force
, assume_clean
,
1275 bitmap_file
, bitmap_chunk
, write_behind
, delay
, autof
);
1278 if (devmode
== 'E') {
1279 if (devlist
== NULL
&& !scan
) {
1280 fprintf(stderr
, Name
": No devices to examine\n");
1283 if (devlist
== NULL
)
1284 devlist
= conf_get_devs();
1285 if (devlist
== NULL
) {
1286 fprintf(stderr
, Name
": No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1289 if (brief
&& verbose
)
1291 rv
= Examine(devlist
, scan
?(verbose
>1?0:verbose
+1):brief
,
1293 SparcAdjust
, ss
, homehost
);
1294 } else if (devmode
== DetailPlatform
) {
1295 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? scan
: 1, verbose
);
1297 if (devlist
== NULL
) {
1298 if ((devmode
=='D' || devmode
== Waitclean
) && scan
) {
1299 /* apply --detail or --wait-clean to
1300 * all devices in /proc/mdstat
1302 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1303 struct mdstat_ent
*e
;
1304 struct map_ent
*map
= NULL
;
1306 int v
= verbose
>1?0:verbose
+1;
1308 for (members
= 0; members
<= 1; members
++) {
1309 for (e
=ms
; e
; e
=e
->next
) {
1312 int member
= e
->metadata_version
&&
1313 strncmp(e
->metadata_version
,
1314 "external:/", 10) == 0;
1315 if (members
!= member
)
1317 me
= map_by_devnum(&map
, e
->devnum
);
1319 && strcmp(me
->path
, "/unknown") != 0)
1322 name
= get_md_name(e
->devnum
);
1325 fprintf(stderr
, Name
": cannot find device file for %s\n",
1330 rv
|= Detail(name
, v
,
1334 rv
|= WaitClean(name
, -1, v
);
1339 } else if (devmode
== 'S' && scan
) {
1340 /* apply --stop to all devices in /proc/mdstat */
1341 /* Due to possible stacking of devices, repeat until
1342 * nothing more can be stopped
1344 int progress
=1, err
;
1347 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1348 struct mdstat_ent
*e
;
1350 if (!progress
) last
= 1;
1351 progress
= 0; err
= 0;
1352 for (e
=ms
; e
; e
=e
->next
) {
1353 char *name
= get_md_name(e
->devnum
);
1356 fprintf(stderr
, Name
": cannot find device file for %s\n",
1360 mdfd
= open_mddev(name
, 1);
1362 if (Manage_runstop(name
, mdfd
, -1, quiet
?1:last
?0:-1))
1372 } while (!last
&& err
);
1375 fprintf(stderr
, Name
": No devices given.\n");
1379 for (dv
=devlist
; dv
; dv
=dv
->next
) {
1380 switch(dv
->disposition
) {
1382 rv
|= Detail(dv
->devname
,
1384 export
, test
, homehost
);
1386 case 'K': /* Zero superblock */
1388 rv
|= Kill(dv
->devname
, ss
, force
, quiet
,0);
1392 rv
|= Kill(dv
->devname
, NULL
, force
, q
, 0);
1399 rv
|= Query(dv
->devname
); continue;
1401 rv
|= ExamineBitmap(dv
->devname
, brief
, ss
); continue;
1403 rv
|= Wait(dv
->devname
); continue;
1405 rv
|= WaitClean(dv
->devname
, -1, verbose
-quiet
); continue;
1407 mdfd
= open_mddev(dv
->devname
, 1);
1409 switch(dv
->disposition
) {
1411 rv
|= Manage_runstop(dv
->devname
, mdfd
, 1, quiet
); break;
1413 rv
|= Manage_runstop(dv
->devname
, mdfd
, -1, quiet
); break;
1415 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1417 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;
1426 if (!devlist
&& !scan
) {
1427 fprintf(stderr
, Name
": Cannot monitor: need --scan or at least one device\n");
1431 if (pidfile
&& !daemonise
) {
1432 fprintf(stderr
, Name
": Cannot write a pid file when not in daemon mode\n");
1437 if (get_linux_version() > 20616)
1438 /* mdstat responds to poll */
1443 rv
= Monitor(devlist
, mailaddr
, program
,
1444 delay
?delay
:60, daemonise
, scan
, oneshot
,
1445 dosyslog
, test
, pidfile
, increments
);
1449 if (array_size
>= 0) {
1450 /* alway impose array size first, independent of
1452 * Do not allow level or raid_disks changes at the
1453 * same time as that can be irreversibly destructive.
1457 if (raiddisks
|| level
!= UnSet
) {
1458 fprintf(stderr
, Name
": cannot change array size in same operation "
1459 "as changing raiddisks or level.\n"
1460 " Change size first, then check that data is still intact.\n");
1464 sysfs_init(&sra
, mdfd
, 0);
1465 if (array_size
== 0)
1466 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1468 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1471 fprintf(stderr
, Name
": --array-size setting"
1472 " is too large.\n");
1474 fprintf(stderr
, Name
": current kernel does"
1475 " not support setting --array-size\n");
1480 if (devs_found
> 1) {
1483 if (size
>= 0 || raiddisks
|| chunk
|| layout_str
!= NULL
|| bitmap_file
) {
1484 fprintf(stderr
, Name
": --add cannot be used with other geometry changes in --grow mode\n");
1488 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1489 rv
= Grow_Add_device(devlist
->devname
, mdfd
, dv
->devname
);
1493 } else if (bitmap_file
) {
1494 if (size
>= 0 || raiddisks
|| chunk
|| layout_str
!= NULL
) {
1495 fprintf(stderr
, Name
": --bitmap changes cannot be used with other geometry changes in --grow mode\n");
1500 delay
= DEFAULT_BITMAP_DELAY
;
1501 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, bitmap_file
,
1502 bitmap_chunk
, delay
, write_behind
, force
);
1503 } else if (size
>= 0 || raiddisks
!= 0 || layout_str
!= NULL
1504 || chunk
!= 0 || level
!= UnSet
) {
1505 rv
= Grow_reshape(devlist
->devname
, mdfd
, quiet
, backup_file
,
1506 size
, level
, layout_str
, chunk
, raiddisks
);
1507 } else if (array_size
< 0)
1508 fprintf(stderr
, Name
": no changes to --grow\n");
1516 fprintf(stderr
, Name
1517 ": --incremental --scan meaningless without --run.\n");
1520 rv
= IncrementalScan(verbose
);
1523 if (!rebuild_map
&& !scan
) {
1524 fprintf(stderr
, Name
1525 ": --incremental requires a device.\n");
1530 if (devlist
->next
) {
1531 fprintf(stderr
, Name
1532 ": --incremental can only handle one device.\n");
1536 rv
= Incremental(devlist
->devname
, verbose
-quiet
, runstop
,
1537 ss
, homehost
, require_homehost
, autof
);