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
;
50 struct mddev_ident ident
;
51 char *configfile
= NULL
;
60 char *bitmap_file
= NULL
;
61 char *backup_file
= NULL
;
62 int invalid_backup
= 0;
63 int bitmap_chunk
= UnSet
;
65 struct mddev_dev
*devlist
= NULL
;
66 struct mddev_dev
**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 int spare_sharing
= 1;
100 struct supertype
*ss
= NULL
;
103 char *shortopt
= short_options
;
106 int auto_update_home
= 0;
107 char *subarray
= NULL
;
108 char *remove_path
= NULL
;
115 srandom(time(0) ^ getpid());
119 ident
.raid_disks
= UnSet
;
120 ident
.super_minor
= UnSet
;
122 ident
.spare_group
= NULL
;
125 ident
.bitmap_fd
= -1;
126 ident
.bitmap_file
= NULL
;
128 ident
.container
= NULL
;
131 while ((option_index
= -1) ,
132 (opt
=getopt_long(argc
, argv
,
133 shortopt
, long_options
,
134 &option_index
)) != -1) {
136 /* firstly, some mode-independent options */
146 fputs(Version
, stderr
);
156 if (mode
== ASSEMBLE
|| mode
== BUILD
|| mode
== CREATE
157 || mode
== GROW
|| mode
== INCREMENTAL
159 break; /* b means bitmap */
168 if (strcasecmp(optarg
, "<ignore>") == 0)
169 require_homehost
= 0;
176 fputs(Usage
, stderr
);
179 /* second, figure out the mode.
180 * Some options force the mode. Others
181 * set the mode if it isn't already
187 shortopt
= short_bitmap_options
;
195 case ReAdd
: /* re-add */
198 shortopt
= short_bitmap_options
;
202 case 'A': newmode
= ASSEMBLE
; shortopt
= short_bitmap_auto_options
; break;
203 case 'B': newmode
= BUILD
; shortopt
= short_bitmap_auto_options
; break;
204 case 'C': newmode
= CREATE
; shortopt
= short_bitmap_auto_options
; break;
205 case 'F': newmode
= MONITOR
;break;
206 case 'G': newmode
= GROW
;
207 shortopt
= short_bitmap_options
;
209 case 'I': newmode
= INCREMENTAL
;
210 shortopt
= short_bitmap_auto_options
; break;
212 newmode
= AUTODETECT
; break;
218 case 'Q': newmode
= MISC
; break;
229 if (opt
== KillSubarray
|| opt
== UpdateSubarray
) {
231 fprintf(stderr
, Name
": subarray can only"
232 " be specified once\n");
237 case 'K': if (!mode
) newmode
= MISC
; break;
238 case NoSharing
: newmode
= MONITOR
; break;
240 if (mode
&& newmode
== mode
) {
241 /* everybody happy ! */
242 } else if (mode
&& newmode
!= mode
) {
244 fprintf(stderr
, Name
": ");
245 if (option_index
>= 0)
246 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
248 fprintf(stderr
, "-%c", opt
);
249 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
250 map_num(modes
, newmode
),
251 map_num(modes
, mode
));
253 } else if (!mode
&& newmode
) {
256 /* special case of -c --help */
257 if ((opt
== 'c' || opt
== ConfigFile
) &&
258 ( strncmp(optarg
, "--h", 3)==0 ||
259 strncmp(optarg
, "-h", 2)==0)) {
260 fputs(Help_config
, stdout
);
264 /* If first option is a device, don't force the mode yet */
266 if (devs_found
== 0) {
267 dv
= malloc(sizeof(*dv
));
269 fprintf(stderr
, Name
": malloc failed\n");
272 dv
->devname
= optarg
;
273 dv
->disposition
= devmode
;
274 dv
->writemostly
= writemostly
;
279 devlistend
= &dv
->next
;
284 /* No mode yet, and this is the second device ... */
285 fprintf(stderr
, Name
": An option must be given to set the mode before a second device\n"
286 " (%s) is listed\n", optarg
);
289 if (option_index
>= 0)
290 fprintf(stderr
, Name
": --%s", long_options
[option_index
].name
);
292 fprintf(stderr
, Name
": -%c", opt
);
293 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
297 /* if we just set the mode, then done */
311 /* an undecorated option - must be a device name.
313 if (devs_found
> 0 && mode
== MANAGE
&& !devmode
) {
314 fprintf(stderr
, Name
": Must give one of -a/-r/-f"
315 " for subsequent devices at %s\n", optarg
);
318 if (devs_found
> 0 && mode
== GROW
&& !devmode
) {
319 fprintf(stderr
, Name
": Must give -a/--add for"
320 " devices to add: %s\n", optarg
);
323 dv
= malloc(sizeof(*dv
));
325 fprintf(stderr
, Name
": malloc failed\n");
328 dv
->devname
= optarg
;
329 dv
->disposition
= devmode
;
330 dv
->writemostly
= writemostly
;
335 devlistend
= &dv
->next
;
341 /* We've got a mode, and opt is now something else which
342 * could depend on the mode */
343 #define O(a,b) ((a<<16)|b)
344 switch (O(mode
,opt
)) {
346 case O(GROW
,ChunkSize
):
348 case O(CREATE
,ChunkSize
):
349 case O(BUILD
,'c'): /* chunk or rounding */
350 case O(BUILD
,ChunkSize
): /* chunk or rounding */
352 fprintf(stderr
, Name
": chunk/rounding may only be specified once. "
353 "Second value is %s.\n", optarg
);
356 chunk
= parse_size(optarg
);
357 if (chunk
< 8 || ((chunk
-1)&chunk
)) {
358 fprintf(stderr
, Name
": invalid chunk/rounding value: %s\n",
362 /* Covert sectors to K */
367 case O(ASSEMBLE
,AutoHomeHost
):
368 auto_update_home
= 1;
371 case O(INCREMENTAL
, 'e'):
373 case O(ASSEMBLE
,'e'):
374 case O(MISC
,'e'): /* set metadata (superblock) information */
376 fprintf(stderr
, Name
": metadata information already given\n");
379 for(i
=0; !ss
&& superlist
[i
]; i
++)
380 ss
= superlist
[i
]->match_metadata_desc(optarg
);
383 fprintf(stderr
, Name
": unrecognised metadata identifier: %s\n", optarg
);
389 case O(MANAGE
,WriteMostly
):
391 case O(BUILD
,WriteMostly
):
393 case O(CREATE
,WriteMostly
):
394 /* set write-mostly for following devices */
399 /* clear write-mostly for following devices */
406 case O(BUILD
,'z'): /* size */
408 fprintf(stderr
, Name
": size may only be specified once. "
409 "Second value is %s.\n", optarg
);
412 if (strcmp(optarg
, "max")==0)
415 size
= parse_size(optarg
);
417 fprintf(stderr
, Name
": invalid size: %s\n",
421 /* convert sectors to K */
426 case O(GROW
,'Z'): /* array size */
427 if (array_size
>= 0) {
428 fprintf(stderr
, Name
": array-size may only be specified once. "
429 "Second value is %s.\n", optarg
);
432 if (strcmp(optarg
, "max") == 0)
435 array_size
= parse_size(optarg
);
436 if (array_size
<= 0) {
437 fprintf(stderr
, Name
": invalid array size: %s\n",
446 case O(BUILD
,'l'): /* set raid level*/
447 if (level
!= UnSet
) {
448 fprintf(stderr
, Name
": raid level may only be set once. "
449 "Second value is %s.\n", optarg
);
452 level
= map_name(pers
, optarg
);
453 if (level
== UnSet
) {
454 fprintf(stderr
, Name
": invalid raid level: %s\n",
458 if (level
!= 0 && level
!= LEVEL_LINEAR
&& level
!= 1 &&
459 level
!= LEVEL_MULTIPATH
&& level
!= LEVEL_FAULTY
&&
462 fprintf(stderr
, Name
": Raid level %s not permitted with --build.\n",
466 if (sparedisks
> 0 && level
< 1 && level
>= -1) {
467 fprintf(stderr
, Name
": raid level %s is incompatible with spare-devices setting.\n",
474 case O(GROW
, 'p'): /* new layout */
475 case O(GROW
, Layout
):
477 fprintf(stderr
,Name
": layout may only be sent once. "
478 "Second value was %s\n", optarg
);
482 /* 'Grow' will parse the value */
485 case O(CREATE
,'p'): /* raid5 layout */
486 case O(CREATE
,Layout
):
487 case O(BUILD
,'p'): /* faulty layout */
488 case O(BUILD
,Layout
):
489 if (layout
!= UnSet
) {
490 fprintf(stderr
,Name
": layout may only be sent once. "
491 "Second value was %s\n", optarg
);
496 fprintf(stderr
, Name
": layout not meaningful for %s arrays.\n",
497 map_num(pers
, level
));
500 fprintf(stderr
, Name
": raid level must be given before layout.\n");
504 layout
= map_name(r5layout
, optarg
);
506 fprintf(stderr
, Name
": layout %s not understood for raid5.\n",
512 layout
= map_name(r6layout
, optarg
);
514 fprintf(stderr
, Name
": layout %s not understood for raid6.\n",
521 layout
= parse_layout_10(optarg
);
523 fprintf(stderr
, Name
": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
531 layout
= parse_layout_faulty(optarg
);
533 fprintf(stderr
, Name
": layout %s not understood for faulty.\n",
541 case O(CREATE
,AssumeClean
):
542 case O(BUILD
,AssumeClean
): /* assume clean */
548 case O(BUILD
,'n'): /* number of raid disks */
550 fprintf(stderr
, Name
": raid-devices set twice: %d and %s\n",
554 raiddisks
= strtol(optarg
, &c
, 10);
555 if (!optarg
[0] || *c
|| raiddisks
<=0) {
556 fprintf(stderr
, Name
": invalid number of raid devices: %s\n",
560 ident
.raid_disks
= raiddisks
;
563 case O(CREATE
,'x'): /* number of spare (eXtra) discs */
565 fprintf(stderr
,Name
": spare-devices set twice: %d and %s\n",
569 if (level
!= UnSet
&& level
<= 0 && level
>= -1) {
570 fprintf(stderr
, Name
": spare-devices setting is incompatible with raid level %d\n",
574 sparedisks
= strtol(optarg
, &c
, 10);
575 if (!optarg
[0] || *c
|| sparedisks
< 0) {
576 fprintf(stderr
, Name
": invalid number of spare-devices: %s\n",
586 case O(INCREMENTAL
,'a'):
587 case O(INCREMENTAL
,Auto
):
588 case O(ASSEMBLE
,'a'):
589 case O(ASSEMBLE
,Auto
): /* auto-creation of device node */
590 autof
= parse_auto(optarg
, "--auto flag", 0);
593 case O(CREATE
,Symlinks
):
594 case O(BUILD
,Symlinks
):
595 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
599 case O(BUILD
,'f'): /* force honouring '-n 1' */
600 case O(BUILD
,Force
): /* force honouring '-n 1' */
601 case O(GROW
,'f'): /* ditto */
602 case O(GROW
,Force
): /* ditto */
603 case O(CREATE
,'f'): /* force honouring of device list */
604 case O(CREATE
,Force
): /* force honouring of device list */
605 case O(ASSEMBLE
,'f'): /* force assembly */
606 case O(ASSEMBLE
,Force
): /* force assembly */
607 case O(MISC
,'f'): /* force zero */
608 case O(MISC
,Force
): /* force zero */
612 /* now for the Assemble options */
613 case O(CREATE
,'u'): /* uuid of array */
614 case O(ASSEMBLE
,'u'): /* uuid of array */
615 if (ident
.uuid_set
) {
616 fprintf(stderr
, Name
": uuid cannot be set twice. "
617 "Second value %s.\n", optarg
);
620 if (parse_uuid(optarg
, ident
.uuid
))
623 fprintf(stderr
,Name
": Bad uuid: %s\n", optarg
);
629 case O(ASSEMBLE
,'N'):
632 fprintf(stderr
, Name
": name cannot be set twice. "
633 "Second value %s.\n", optarg
);
636 if (mode
== MISC
&& !subarray
) {
637 fprintf(stderr
, Name
": -N/--name only valid with --update-subarray in misc mode\n");
640 if (strlen(optarg
) > 32) {
641 fprintf(stderr
, Name
": name '%s' is too long, 32 chars max.\n",
645 strcpy(ident
.name
, optarg
);
648 case O(ASSEMBLE
,'m'): /* super-minor for array */
649 case O(ASSEMBLE
,SuperMinor
):
650 if (ident
.super_minor
!= UnSet
) {
651 fprintf(stderr
, Name
": super-minor cannot be set twice. "
652 "Second value: %s.\n", optarg
);
655 if (strcmp(optarg
, "dev")==0)
656 ident
.super_minor
= -2;
658 ident
.super_minor
= strtoul(optarg
, &cp
, 10);
659 if (!optarg
[0] || *cp
) {
660 fprintf(stderr
, Name
": Bad super-minor number: %s.\n", optarg
);
666 case O(ASSEMBLE
,'U'): /* update the superblock */
669 fprintf(stderr
, Name
": Can only update one aspect of superblock, both %s and %s given.\n",
673 if (mode
== MISC
&& !subarray
) {
674 fprintf(stderr
, Name
": Only subarrays can be updated in misc mode\n");
678 if (strcmp(update
, "sparc2.2")==0)
680 if (strcmp(update
, "super-minor") == 0)
682 if (strcmp(update
, "summaries")==0)
684 if (strcmp(update
, "resync")==0)
686 if (strcmp(update
, "uuid")==0)
688 if (strcmp(update
, "name")==0)
690 if (strcmp(update
, "homehost")==0)
692 if (strcmp(update
, "devicesize")==0)
694 if (strcmp(update
, "no-bitmap")==0)
696 if (strcmp(update
, "byteorder")==0) {
698 fprintf(stderr
, Name
": must not set metadata type with --update=byteorder.\n");
701 for(i
=0; !ss
&& superlist
[i
]; i
++)
702 ss
= superlist
[i
]->match_metadata_desc("0.swap");
704 fprintf(stderr
, Name
": INTERNAL ERROR cannot find 0.swap\n");
710 if (strcmp(update
,"?") == 0 ||
711 strcmp(update
, "help") == 0) {
713 fprintf(outf
, Name
": ");
717 Name
": '--update=%s' is invalid. ",
720 fprintf(outf
, "Valid --update options are:\n"
721 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
722 " 'summaries', 'homehost', 'byteorder', 'devicesize',\n"
724 exit(outf
== stdout
? 0 : 2);
726 case O(INCREMENTAL
,NoDegraded
):
727 fprintf(stderr
, Name
": --no-degraded is deprecated in Incremental mode\n");
728 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
729 runstop
= -1; /* --stop isn't allowed for --assemble,
730 * so we overload slightly */
733 case O(ASSEMBLE
,'c'):
734 case O(ASSEMBLE
,ConfigFile
):
735 case O(INCREMENTAL
, 'c'):
736 case O(INCREMENTAL
, ConfigFile
):
738 case O(MISC
, ConfigFile
):
740 case O(MONITOR
,ConfigFile
):
742 fprintf(stderr
, Name
": configfile cannot be set twice. "
743 "Second value is %s.\n", optarg
);
747 set_conffile(configfile
);
748 /* FIXME possibly check that config file exists. Even parse it */
750 case O(ASSEMBLE
,'s'): /* scan */
753 case O(INCREMENTAL
,'s'):
757 case O(MONITOR
,'m'): /* mail address */
758 case O(MONITOR
,EMail
):
760 fprintf(stderr
, Name
": only specify one mailaddress. %s ignored.\n",
766 case O(MONITOR
,'p'): /* alert program */
767 case O(MONITOR
,ProgramOpt
): /* alert program */
769 fprintf(stderr
, Name
": only specify one alter program. %s ignored.\n",
775 case O(MONITOR
,'r'): /* rebuild increments */
776 case O(MONITOR
,Increment
):
777 increments
= atoi(optarg
);
778 if (increments
>99 || increments
<1) {
779 fprintf(stderr
, Name
": please specify positive integer between 1 and 99 as rebuild increments.\n");
784 case O(MONITOR
,'d'): /* delay in seconds */
786 case O(BUILD
,'d'): /* delay for bitmap updates */
789 fprintf(stderr
, Name
": only specify delay once. %s ignored.\n",
792 delay
= strtol(optarg
, &c
, 10);
793 if (!optarg
[0] || *c
|| delay
<1) {
794 fprintf(stderr
, Name
": invalid delay: %s\n",
800 case O(MONITOR
,'f'): /* daemonise */
801 case O(MONITOR
,Fork
):
804 case O(MONITOR
,'i'): /* pid */
806 fprintf(stderr
, Name
": only specify one pid file. %s ignored.\n",
811 case O(MONITOR
,'1'): /* oneshot */
814 case O(MONITOR
,'t'): /* test */
817 case O(MONITOR
,'y'): /* log messages to syslog */
818 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
821 case O(MONITOR
, NoSharing
):
824 /* now the general management options. Some are applicable
825 * to other modes. None have arguments.
830 case O(MANAGE
,Add
): /* add a drive */
834 case O(MANAGE
,ReAdd
):
838 case O(MANAGE
,'r'): /* remove a drive */
839 case O(MANAGE
,Remove
):
842 case O(MANAGE
,'f'): /* set faulty */
844 case O(INCREMENTAL
,'f'):
845 case O(INCREMENTAL
,Remove
):
846 case O(INCREMENTAL
,Fail
): /* r for incremental is taken, use f
847 * even though we will both fail and
848 * remove the device */
851 case O(INCREMENTAL
,'R'):
853 case O(ASSEMBLE
,'R'):
855 case O(CREATE
,'R'): /* Run the array */
857 fprintf(stderr
, Name
": Cannot both Stop and Run an array\n");
864 fprintf(stderr
, Name
": Cannot both Run and Stop an array\n");
883 case O(MISC
, WaitOpt
):
884 case O(MISC
, Waitclean
):
885 case O(MISC
, DetailPlatform
):
886 case O(MISC
, KillSubarray
):
887 case O(MISC
, UpdateSubarray
):
888 if (devmode
&& devmode
!= opt
&&
889 (devmode
== 'E' || (opt
== 'E' && devmode
!= 'Q'))) {
890 fprintf(stderr
, Name
": --examine/-E cannot be given with ");
891 if (devmode
== 'E') {
892 if (option_index
>= 0)
893 fprintf(stderr
, "--%s\n",
894 long_options
[option_index
].name
);
896 fprintf(stderr
, "-%c\n", opt
);
897 } else if (isalpha(devmode
))
898 fprintf(stderr
, "-%c\n", devmode
);
900 fprintf(stderr
, "previous option\n");
909 case O(MISC
, Sparc22
):
910 if (devmode
!= 'E') {
911 fprintf(stderr
, Name
": --sparc2.2 only allowed with --examine\n");
917 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
918 case O(ASSEMBLE
,Bitmap
):
920 fprintf(stderr
, Name
": bitmap file needed with -b in --assemble mode\n");
923 if (strcmp(optarg
, "internal")==0) {
924 fprintf(stderr
, Name
": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
927 bitmap_fd
= open(optarg
, O_RDWR
);
928 if (!*optarg
|| bitmap_fd
< 0) {
929 fprintf(stderr
, Name
": cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
932 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
935 case O(ASSEMBLE
, BackupFile
):
936 case O(GROW
, BackupFile
):
937 /* Specify a file into which grow might place a backup,
938 * or from which assemble might recover a backup
941 fprintf(stderr
, Name
": backup file already specified, rejecting %s\n", optarg
);
944 backup_file
= optarg
;
947 case O(ASSEMBLE
, InvalidBackup
):
948 /* Acknowledge that the backupfile is invalid, but ask
955 case O(BUILD
,Bitmap
):
957 case O(CREATE
,Bitmap
): /* here we create the bitmap */
958 if (strcmp(optarg
, "none") == 0) {
959 fprintf(stderr
, Name
": '--bitmap none' only"
960 " support for --grow\n");
966 if (strcmp(optarg
, "internal")== 0 ||
967 strcmp(optarg
, "none")== 0 ||
968 strchr(optarg
, '/') != NULL
) {
969 bitmap_file
= optarg
;
973 fprintf(stderr
, Name
": bitmap file must contain a '/', or be 'internal', or 'none'\n"
974 " not '%s'\n", optarg
);
977 case O(GROW
,BitmapChunk
):
978 case O(BUILD
,BitmapChunk
):
979 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
980 bitmap_chunk
= parse_size(optarg
);
981 if (bitmap_chunk
< 0 ||
982 bitmap_chunk
& (bitmap_chunk
- 1)) {
984 Name
": invalid bitmap chunksize: %s\n",
988 /* convert sectors to B, chunk of 0 means 512B */
989 bitmap_chunk
= bitmap_chunk
? bitmap_chunk
* 512 : 512;
992 case O(GROW
, WriteBehind
):
993 case O(BUILD
, WriteBehind
):
994 case O(CREATE
, WriteBehind
): /* write-behind mode */
995 write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
997 write_behind
= strtol(optarg
, &c
, 10);
998 if (write_behind
< 0 || *c
||
999 write_behind
> 16383) {
1000 fprintf(stderr
, Name
": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
1006 case O(INCREMENTAL
, 'r'):
1007 case O(INCREMENTAL
, RebuildMapOpt
):
1010 case O(INCREMENTAL
, IncrementalPath
):
1011 remove_path
= optarg
;
1014 /* We have now processed all the valid options. Anything else is
1017 if (option_index
> 0)
1018 fprintf(stderr
, Name
":option --%s not valid in %s mode\n",
1019 long_options
[option_index
].name
,
1020 map_num(modes
, mode
));
1022 fprintf(stderr
, Name
": option -%c not valid in %s mode\n",
1023 opt
, map_num(modes
, mode
));
1029 char *help_text
= Help
;
1030 if (print_help
== 2)
1031 help_text
= OptionHelp
;
1034 case ASSEMBLE
: help_text
= Help_assemble
; break;
1035 case BUILD
: help_text
= Help_build
; break;
1036 case CREATE
: help_text
= Help_create
; break;
1037 case MANAGE
: help_text
= Help_manage
; break;
1038 case MISC
: help_text
= Help_misc
; break;
1039 case MONITOR
: help_text
= Help_monitor
; break;
1040 case GROW
: help_text
= Help_grow
; break;
1041 case INCREMENTAL
:help_text
= Help_incr
; break;
1043 fputs(help_text
,stdout
);
1047 if (!mode
&& devs_found
) {
1050 if (devlist
->disposition
== 0)
1051 devlist
->disposition
= devmode
;
1054 fputs(Usage
, stderr
);
1059 struct createinfo
*ci
= conf_get_create_info();
1061 if (strcasecmp(symlinks
, "yes") == 0)
1063 else if (strcasecmp(symlinks
, "no") == 0)
1066 fprintf(stderr
, Name
": option --symlinks must be 'no' or 'yes'\n");
1070 /* Ok, got the option parsing out of the way
1071 * hopefully it's mostly right but there might be some stuff
1074 * That is mosty checked in the per-mode stuff but...
1076 * For @,B,C and A without -s, the first device listed must be an md device
1077 * we check that here and open it.
1080 if (mode
==MANAGE
|| mode
== BUILD
|| mode
== CREATE
|| mode
== GROW
||
1081 (mode
== ASSEMBLE
&& ! scan
)) {
1082 if (devs_found
< 1) {
1083 fprintf(stderr
, Name
": an md device must be given in this mode\n");
1086 if ((int)ident
.super_minor
== -2 && autof
) {
1087 fprintf(stderr
, Name
": --super-minor=dev is incompatible with --auto\n");
1090 if (mode
== MANAGE
|| mode
== GROW
) {
1091 mdfd
= open_mddev(devlist
->devname
, 1);
1095 /* non-existent device is OK */
1096 mdfd
= open_mddev(devlist
->devname
, 0);
1098 fprintf(stderr
, Name
": device %s exists but is not an "
1099 "md array.\n", devlist
->devname
);
1102 if ((int)ident
.super_minor
== -2) {
1105 fprintf(stderr
, Name
": --super-minor=dev given, and "
1106 "listed device %s doesn't exist.\n",
1111 ident
.super_minor
= minor(stb
.st_rdev
);
1113 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1114 /* We don't really want this open yet, we just might
1115 * have wanted to check some things
1123 if (raiddisks
== 1 && !force
&& level
!= -5) {
1124 fprintf(stderr
, Name
": '1' is an unusual number of drives for an array, so it is probably\n"
1125 " a mistake. If you really mean it you will need to specify --force before\n"
1126 " setting the number of drives.\n");
1131 if (homehost
== NULL
)
1132 homehost
= conf_get_homehost(&require_homehost
);
1133 if (homehost
== NULL
|| strcmp(homehost
, "<system>")==0) {
1134 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1135 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1136 homehost
= sys_hostname
;
1140 if ((mode
!= MISC
|| devmode
!= 'E') &&
1142 fprintf(stderr
, Name
": must be super-user to perform this action\n");
1146 ident
.autof
= autof
;
1151 /* readonly, add/remove, readwrite, runstop */
1153 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1154 if (!rv
&& devs_found
>1)
1155 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1156 devlist
->next
, verbose
-quiet
, test
);
1157 if (!rv
&& readonly
< 0)
1158 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1160 rv
= Manage_runstop(devlist
->devname
, mdfd
, runstop
, quiet
);
1163 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1164 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 && !scan
) {
1165 /* Only a device has been given, so get details from config file */
1166 struct mddev_ident
*array_ident
= conf_get_ident(devlist
->devname
);
1167 if (array_ident
== NULL
) {
1168 fprintf(stderr
, Name
": %s not identified in config file.\n",
1174 if (array_ident
->autof
== 0)
1175 array_ident
->autof
= autof
;
1176 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1177 NULL
, backup_file
, invalid_backup
,
1178 readonly
, runstop
, update
,
1179 homehost
, require_homehost
,
1180 verbose
-quiet
, force
);
1183 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1184 devlist
->next
, backup_file
, invalid_backup
,
1185 readonly
, runstop
, update
,
1186 homehost
, require_homehost
,
1187 verbose
-quiet
, force
);
1188 else if (devs_found
>0) {
1189 if (update
&& devs_found
> 1) {
1190 fprintf(stderr
, Name
": can only update a single array at a time\n");
1193 if (backup_file
&& devs_found
> 1) {
1194 fprintf(stderr
, Name
": can only assemble a single array when providing a backup file.\n");
1197 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1198 struct mddev_ident
*array_ident
= conf_get_ident(dv
->devname
);
1199 if (array_ident
== NULL
) {
1200 fprintf(stderr
, Name
": %s not identified in config file.\n",
1205 if (array_ident
->autof
== 0)
1206 array_ident
->autof
= autof
;
1207 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1208 NULL
, backup_file
, invalid_backup
,
1209 readonly
, runstop
, update
,
1210 homehost
, require_homehost
,
1211 verbose
-quiet
, force
);
1214 struct mddev_ident
*a
, *array_list
= conf_get_ident(NULL
);
1215 struct mddev_dev
*devlist
= conf_get_devs();
1217 int failures
, successes
;
1218 if (devlist
== NULL
) {
1219 fprintf(stderr
, Name
": No devices listed in conf file were found.\n");
1223 fprintf(stderr
, Name
": --update not meaningful with a --scan assembly.\n");
1227 fprintf(stderr
, Name
": --backup_file not meaningful with a --scan assembly.\n");
1230 for (a
= array_list
; a
; a
= a
->next
) {
1239 for (a
= array_list
; a
; a
= a
->next
) {
1244 strcasecmp(a
->devname
, "<ignore>") == 0)
1247 r
= Assemble(ss
, a
->devname
,
1250 readonly
, runstop
, NULL
,
1251 homehost
, require_homehost
,
1252 verbose
-quiet
, force
);
1261 } while (failures
&& successes
);
1262 if (homehost
&& cnt
== 0) {
1263 /* Maybe we can auto-assemble something.
1264 * Repeatedly call Assemble in auto-assemble mode
1269 ident
.autof
= autof
;
1271 struct mddev_dev
*devlist
= conf_get_devs();
1274 rv2
= Assemble(ss
, NULL
,
1277 readonly
, runstop
, NULL
,
1278 homehost
, require_homehost
,
1279 verbose
-quiet
, force
);
1285 /* found something so even though assembly failed we
1286 * want to avoid auto-updates
1288 auto_update_home
= 0;
1290 /* Incase there are stacked devices, we need to go around again */
1293 if (cnt
== 0 && auto_update_home
&& homehost
) {
1294 /* Nothing found, maybe we need to bootstrap homehost info */
1306 verbose
-quiet
, force
);
1312 /* Incase there are stacked devices, we need to go around again */
1316 if (cnt
== 0 && rv
== 0) {
1317 fprintf(stderr
, Name
": No arrays found in config file or automatically\n");
1321 } else if (cnt
== 0 && rv
== 0) {
1322 fprintf(stderr
, Name
": No arrays found in config file\n");
1328 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1329 if (write_behind
&& !bitmap_file
) {
1330 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1334 if (raiddisks
== 0) {
1335 fprintf(stderr
, Name
": no raid-devices specified.\n");
1341 if (strcmp(bitmap_file
, "internal")==0) {
1342 fprintf(stderr
, Name
": 'internal' bitmaps not supported with --build\n");
1347 rv
= Build(devlist
->devname
, chunk
, level
, layout
,
1348 raiddisks
, devlist
->next
, assume_clean
,
1349 bitmap_file
, bitmap_chunk
, write_behind
,
1350 delay
, verbose
-quiet
, autof
, size
);
1353 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1354 if (write_behind
&& !bitmap_file
) {
1355 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1359 if (raiddisks
== 0) {
1360 fprintf(stderr
, Name
": no raid-devices specified.\n");
1365 rv
= Create(ss
, devlist
->devname
, chunk
, level
, layout
, size
<0 ? 0 : size
,
1366 raiddisks
, sparedisks
, ident
.name
, homehost
,
1367 ident
.uuid_set
? ident
.uuid
: NULL
,
1368 devs_found
-1, devlist
->next
, runstop
, verbose
-quiet
, force
, assume_clean
,
1369 bitmap_file
, bitmap_chunk
, write_behind
, delay
, autof
);
1372 if (devmode
== 'E') {
1373 if (devlist
== NULL
&& !scan
) {
1374 fprintf(stderr
, Name
": No devices to examine\n");
1377 if (devlist
== NULL
)
1378 devlist
= conf_get_devs();
1379 if (devlist
== NULL
) {
1380 fprintf(stderr
, Name
": No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1383 if (brief
&& verbose
)
1385 rv
= Examine(devlist
, scan
?(verbose
>1?0:verbose
+1):brief
,
1387 SparcAdjust
, ss
, homehost
);
1388 } else if (devmode
== DetailPlatform
) {
1389 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? scan
: 1, verbose
);
1391 if (devlist
== NULL
) {
1392 if ((devmode
=='D' || devmode
== Waitclean
) && scan
) {
1393 /* apply --detail or --wait-clean to
1394 * all devices in /proc/mdstat
1396 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1397 struct mdstat_ent
*e
;
1398 struct map_ent
*map
= NULL
;
1400 int v
= verbose
>1?0:verbose
+1;
1402 for (members
= 0; members
<= 1; members
++) {
1403 for (e
=ms
; e
; e
=e
->next
) {
1406 int member
= e
->metadata_version
&&
1407 strncmp(e
->metadata_version
,
1408 "external:/", 10) == 0;
1409 if (members
!= member
)
1411 me
= map_by_devnum(&map
, e
->devnum
);
1413 && strcmp(me
->path
, "/unknown") != 0)
1416 name
= get_md_name(e
->devnum
);
1419 fprintf(stderr
, Name
": cannot find device file for %s\n",
1424 rv
|= Detail(name
, v
,
1428 rv
|= WaitClean(name
, -1, v
);
1433 } else if (devmode
== 'S' && scan
) {
1434 /* apply --stop to all devices in /proc/mdstat */
1435 /* Due to possible stacking of devices, repeat until
1436 * nothing more can be stopped
1438 int progress
=1, err
;
1441 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1442 struct mdstat_ent
*e
;
1444 if (!progress
) last
= 1;
1445 progress
= 0; err
= 0;
1446 for (e
=ms
; e
; e
=e
->next
) {
1447 char *name
= get_md_name(e
->devnum
);
1450 fprintf(stderr
, Name
": cannot find device file for %s\n",
1454 mdfd
= open_mddev(name
, 1);
1456 if (Manage_runstop(name
, mdfd
, -1, quiet
?1:last
?0:-1))
1466 } while (!last
&& err
);
1469 fprintf(stderr
, Name
": No devices given.\n");
1473 for (dv
=devlist
; dv
; dv
=dv
->next
) {
1474 switch(dv
->disposition
) {
1476 rv
|= Detail(dv
->devname
,
1478 export
, test
, homehost
);
1480 case 'K': /* Zero superblock */
1482 rv
|= Kill(dv
->devname
, ss
, force
, quiet
,0);
1486 rv
|= Kill(dv
->devname
, NULL
, force
, q
, 0);
1493 rv
|= Query(dv
->devname
); continue;
1495 rv
|= ExamineBitmap(dv
->devname
, brief
, ss
); continue;
1498 rv
|= Wait(dv
->devname
); continue;
1500 rv
|= WaitClean(dv
->devname
, -1, verbose
-quiet
); continue;
1502 rv
|= Kill_subarray(dv
->devname
, subarray
, quiet
);
1504 case UpdateSubarray
:
1505 if (update
== NULL
) {
1507 Name
": -U/--update must be specified with --update-subarray\n");
1511 rv
|= Update_subarray(dv
->devname
, subarray
, update
, &ident
, quiet
);
1514 mdfd
= open_mddev(dv
->devname
, 1);
1516 switch(dv
->disposition
) {
1518 rv
|= Manage_runstop(dv
->devname
, mdfd
, 1, quiet
); break;
1520 rv
|= Manage_runstop(dv
->devname
, mdfd
, -1, quiet
); break;
1522 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1524 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;
1533 if (!devlist
&& !scan
) {
1534 fprintf(stderr
, Name
": Cannot monitor: need --scan or at least one device\n");
1538 if (pidfile
&& !daemonise
) {
1539 fprintf(stderr
, Name
": Cannot write a pid file when not in daemon mode\n");
1544 if (get_linux_version() > 2006016)
1545 /* mdstat responds to poll */
1550 rv
= Monitor(devlist
, mailaddr
, program
,
1551 delay
?delay
:60, daemonise
, scan
, oneshot
,
1552 dosyslog
, test
, pidfile
, increments
, spare_sharing
);
1556 if (array_size
>= 0) {
1557 /* alway impose array size first, independent of
1559 * Do not allow level or raid_disks changes at the
1560 * same time as that can be irreversibly destructive.
1564 if (raiddisks
|| level
!= UnSet
) {
1565 fprintf(stderr
, Name
": cannot change array size in same operation "
1566 "as changing raiddisks or level.\n"
1567 " Change size first, then check that data is still intact.\n");
1571 sysfs_init(&sra
, mdfd
, 0);
1572 if (array_size
== 0)
1573 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1575 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1578 fprintf(stderr
, Name
": --array-size setting"
1579 " is too large.\n");
1581 fprintf(stderr
, Name
": current kernel does"
1582 " not support setting --array-size\n");
1587 if (devs_found
> 1) {
1590 if (size
>= 0 || raiddisks
|| chunk
|| layout_str
!= NULL
|| bitmap_file
) {
1591 fprintf(stderr
, Name
": --add cannot be used with other geometry changes in --grow mode\n");
1595 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1596 rv
= Grow_Add_device(devlist
->devname
, mdfd
, dv
->devname
);
1600 } else if (bitmap_file
) {
1601 if (size
>= 0 || raiddisks
|| chunk
|| layout_str
!= NULL
) {
1602 fprintf(stderr
, Name
": --bitmap changes cannot be used with other geometry changes in --grow mode\n");
1607 delay
= DEFAULT_BITMAP_DELAY
;
1608 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, bitmap_file
,
1609 bitmap_chunk
, delay
, write_behind
, force
);
1610 } else if (size
>= 0 || raiddisks
!= 0 || layout_str
!= NULL
1611 || chunk
!= 0 || level
!= UnSet
) {
1612 rv
= Grow_reshape(devlist
->devname
, mdfd
, quiet
, backup_file
,
1613 size
, level
, layout_str
, chunk
, raiddisks
);
1614 } else if (array_size
< 0)
1615 fprintf(stderr
, Name
": no changes to --grow\n");
1623 fprintf(stderr
, Name
1624 ": --incremental --scan meaningless without --run.\n");
1627 if (devmode
== 'f') {
1628 fprintf(stderr
, Name
1629 ": --incremental --scan --fail not supported.\n");
1632 rv
= IncrementalScan(verbose
);
1635 if (!rebuild_map
&& !scan
) {
1636 fprintf(stderr
, Name
1637 ": --incremental requires a device.\n");
1642 if (devlist
->next
) {
1643 fprintf(stderr
, Name
1644 ": --incremental can only handle one device.\n");
1649 rv
= IncrementalRemove(devlist
->devname
, remove_path
,
1652 rv
= Incremental(devlist
->devname
, verbose
-quiet
,
1653 runstop
, ss
, homehost
,
1654 require_homehost
, autof
);