2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2012 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.
32 static int scan_assemble(struct supertype
*ss
,
34 struct mddev_ident
*ident
);
35 static int misc_scan(char devmode
, struct context
*c
);
36 static int stop_scan(int verbose
);
37 static int misc_list(struct mddev_dev
*devlist
,
38 struct mddev_ident
*ident
,
40 struct supertype
*ss
, struct context
*c
);
42 int main(int argc
, char *argv
[])
50 unsigned long long array_size
= 0;
51 unsigned long long data_offset
= INVALID_SECTORS
;
52 struct mddev_ident ident
;
53 char *configfile
= NULL
;
56 struct mddev_dev
*devlist
= NULL
;
57 struct mddev_dev
**devlistend
= & devlist
;
60 char *symlinks
= NULL
;
61 int grow_continue
= 0;
62 /* autof indicates whether and how to create device node.
63 * bottom 3 bits are style. Rest (when shifted) are number of parts
65 * 1 - don't create (no)
66 * 2 - if is_standard, then create (yes)
67 * 3 - create as 'md' - reject is_standard mdp (md)
68 * 4 - create as 'mdp' - reject is_standard md (mdp)
69 * 5 - default to md if not is_standard (md in config file)
70 * 6 - default to mdp if not is_standard (part, or mdp in config file)
73 .require_homehost
= 1,
78 .bitmap_chunk
= UnSet
,
81 char sys_hostname
[256];
82 char *mailaddr
= NULL
;
88 int spare_sharing
= 1;
89 struct supertype
*ss
= NULL
;
91 char *shortopt
= short_options
;
94 char *remove_path
= NULL
;
95 char *udev_filename
= NULL
;
96 char *dump_directory
= NULL
;
103 srandom(time(0) ^ getpid());
107 ident
.raid_disks
= UnSet
;
108 ident
.super_minor
= UnSet
;
110 ident
.spare_group
= NULL
;
113 ident
.bitmap_fd
= -1;
114 ident
.bitmap_file
= NULL
;
116 ident
.container
= NULL
;
120 * set first char of argv[0] to @. This is used by
121 * systemd to signal that the task was launched from
122 * initrd/initramfs and should be preserved during shutdown
126 while ((option_index
= -1) ,
127 (opt
=getopt_long(argc
, argv
,
128 shortopt
, long_options
,
129 &option_index
)) != -1) {
131 /* firstly, some mode-independent options */
141 fputs(Version
, stderr
);
144 case 'v': c
.verbose
++;
147 case 'q': c
.verbose
--;
151 if (mode
== ASSEMBLE
|| mode
== BUILD
|| mode
== CREATE
152 || mode
== GROW
|| mode
== INCREMENTAL
154 break; /* b means bitmap */
159 case 'Y': c
.export
++;
163 if (strcasecmp(optarg
, "<ignore>") == 0)
164 c
.require_homehost
= 0;
170 /* Silently ignore old option */
176 if (asprintf(&c
.prefer
, "/%s/", optarg
) <= 0)
182 fputs(Usage
, stderr
);
185 /* second, figure out the mode.
186 * Some options force the mode. Others
187 * set the mode if it isn't already
193 shortopt
= short_bitmap_options
;
203 case ReAdd
: /* re-add */
206 shortopt
= short_bitmap_options
;
210 case 'A': newmode
= ASSEMBLE
;
211 shortopt
= short_bitmap_auto_options
;
213 case 'B': newmode
= BUILD
;
214 shortopt
= short_bitmap_auto_options
;
216 case 'C': newmode
= CREATE
;
217 shortopt
= short_bitmap_auto_options
;
219 case 'F': newmode
= MONITOR
;
221 case 'G': newmode
= GROW
;
222 shortopt
= short_bitmap_options
;
224 case 'I': newmode
= INCREMENTAL
;
225 shortopt
= short_bitmap_auto_options
;
228 newmode
= AUTODETECT
;
262 if (mode
&& newmode
== mode
) {
263 /* everybody happy ! */
264 } else if (mode
&& newmode
!= mode
) {
267 if (option_index
>= 0)
268 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
270 fprintf(stderr
, "-%c", opt
);
271 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
272 map_num(modes
, newmode
),
273 map_num(modes
, mode
));
275 } else if (!mode
&& newmode
) {
277 if (mode
== MISC
&& devs_found
) {
278 pr_err("No action given for %s in --misc mode\n",
280 cont_err("Action options must come before device names\n");
284 /* special case of -c --help */
285 if ((opt
== 'c' || opt
== ConfigFile
) &&
286 ( strncmp(optarg
, "--h", 3)==0 ||
287 strncmp(optarg
, "-h", 2)==0)) {
288 fputs(Help_config
, stdout
);
292 /* If first option is a device, don't force the mode yet */
294 if (devs_found
== 0) {
295 dv
= xmalloc(sizeof(*dv
));
296 dv
->devname
= optarg
;
297 dv
->disposition
= devmode
;
298 dv
->writemostly
= writemostly
;
302 devlistend
= &dv
->next
;
307 /* No mode yet, and this is the second device ... */
308 pr_err("An option must be given to set the mode before a second device\n"
309 " (%s) is listed\n", optarg
);
312 if (option_index
>= 0)
313 pr_err("--%s", long_options
[option_index
].name
);
316 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
320 /* if we just set the mode, then done */
334 /* an undecorated option - must be a device name.
337 if (devs_found
> 0 && devmode
== DetailPlatform
) {
338 pr_err("controller may only be specified once. %s ignored\n",
343 if (devs_found
> 0 && mode
== MANAGE
&& !devmode
) {
344 pr_err("Must give one of -a/-r/-f"
345 " for subsequent devices at %s\n", optarg
);
348 if (devs_found
> 0 && mode
== GROW
&& !devmode
) {
349 pr_err("Must give -a/--add for"
350 " devices to add: %s\n", optarg
);
353 dv
= xmalloc(sizeof(*dv
));
354 dv
->devname
= optarg
;
355 dv
->disposition
= devmode
;
356 dv
->writemostly
= writemostly
;
360 devlistend
= &dv
->next
;
366 /* We've got a mode, and opt is now something else which
367 * could depend on the mode */
368 #define O(a,b) ((a<<16)|b)
369 switch (O(mode
,opt
)) {
371 case O(GROW
,ChunkSize
):
373 case O(CREATE
,ChunkSize
):
374 case O(BUILD
,'c'): /* chunk or rounding */
375 case O(BUILD
,ChunkSize
): /* chunk or rounding */
377 pr_err("chunk/rounding may only be specified once. "
378 "Second value is %s.\n", optarg
);
381 s
.chunk
= parse_size(optarg
);
382 if (s
.chunk
== INVALID_SECTORS
||
383 s
.chunk
< 8 || (s
.chunk
&1)) {
384 pr_err("invalid chunk/rounding value: %s\n",
388 /* Convert sectors to K */
392 case O(INCREMENTAL
, 'e'):
394 case O(ASSEMBLE
,'e'):
395 case O(MISC
,'e'): /* set metadata (superblock) information */
397 pr_err("metadata information already given\n");
400 for(i
=0; !ss
&& superlist
[i
]; i
++)
401 ss
= superlist
[i
]->match_metadata_desc(optarg
);
404 pr_err("unrecognised metadata identifier: %s\n", optarg
);
410 case O(MANAGE
,WriteMostly
):
412 case O(BUILD
,WriteMostly
):
414 case O(CREATE
,WriteMostly
):
415 /* set write-mostly for following devices */
420 /* clear write-mostly for following devices */
426 case O(BUILD
,'z'): /* size */
428 pr_err("size may only be specified once. "
429 "Second value is %s.\n", optarg
);
432 if (strcmp(optarg
, "max")==0)
435 s
.size
= parse_size(optarg
);
436 if (s
.size
== INVALID_SECTORS
||
438 pr_err("invalid size: %s\n",
442 /* convert sectors to K */
447 case O(GROW
,'Z'): /* array size */
448 if (array_size
> 0) {
449 pr_err("array-size may only be specified once. "
450 "Second value is %s.\n", optarg
);
453 if (strcmp(optarg
, "max") == 0)
454 array_size
= MAX_SIZE
;
456 array_size
= parse_size(optarg
);
457 if (array_size
== 0 ||
458 array_size
== INVALID_SECTORS
) {
459 pr_err("invalid array size: %s\n",
466 case O(CREATE
,DataOffset
):
467 case O(GROW
,DataOffset
):
468 if (data_offset
!= INVALID_SECTORS
) {
469 pr_err("data-offset may only be specified one. "
470 "Second value is %s.\n", optarg
);
473 if (mode
== CREATE
&&
474 strcmp(optarg
, "variable") == 0)
475 data_offset
= VARIABLE_OFFSET
;
477 data_offset
= parse_size(optarg
);
478 if (data_offset
== INVALID_SECTORS
) {
479 pr_err("invalid data-offset: %s\n",
487 case O(BUILD
,'l'): /* set raid level*/
488 if (s
.level
!= UnSet
) {
489 pr_err("raid level may only be set once. "
490 "Second value is %s.\n", optarg
);
493 s
.level
= map_name(pers
, optarg
);
494 if (s
.level
== UnSet
) {
495 pr_err("invalid raid level: %s\n",
499 if (s
.level
!= 0 && s
.level
!= LEVEL_LINEAR
&& s
.level
!= 1 &&
500 s
.level
!= LEVEL_MULTIPATH
&& s
.level
!= LEVEL_FAULTY
&&
503 pr_err("Raid level %s not permitted with --build.\n",
507 if (s
.sparedisks
> 0 && s
.level
< 1 && s
.level
>= -1) {
508 pr_err("raid level %s is incompatible with spare-devices setting.\n",
512 ident
.level
= s
.level
;
515 case O(GROW
, 'p'): /* new layout */
516 case O(GROW
, Layout
):
518 pr_err("layout may only be sent once. "
519 "Second value was %s\n", optarg
);
522 s
.layout_str
= optarg
;
523 /* 'Grow' will parse the value */
526 case O(CREATE
,'p'): /* raid5 layout */
527 case O(CREATE
,Layout
):
528 case O(BUILD
,'p'): /* faulty layout */
529 case O(BUILD
,Layout
):
530 if (s
.layout
!= UnSet
) {
531 pr_err("layout may only be sent once. "
532 "Second value was %s\n", optarg
);
537 pr_err("layout not meaningful for %s arrays.\n",
538 map_num(pers
, s
.level
));
541 pr_err("raid level must be given before layout.\n");
545 s
.layout
= map_name(r5layout
, optarg
);
546 if (s
.layout
==UnSet
) {
547 pr_err("layout %s not understood for raid5.\n",
553 s
.layout
= map_name(r6layout
, optarg
);
554 if (s
.layout
==UnSet
) {
555 pr_err("layout %s not understood for raid6.\n",
562 s
.layout
= parse_layout_10(optarg
);
564 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
572 s
.layout
= parse_layout_faulty(optarg
);
573 if (s
.layout
== -1) {
574 pr_err("layout %s not understood for faulty.\n",
582 case O(CREATE
,AssumeClean
):
583 case O(BUILD
,AssumeClean
): /* assume clean */
584 case O(GROW
,AssumeClean
):
590 case O(BUILD
,'n'): /* number of raid disks */
592 pr_err("raid-devices set twice: %d and %s\n",
593 s
.raiddisks
, optarg
);
596 s
.raiddisks
= parse_num(optarg
);
597 if (s
.raiddisks
<= 0) {
598 pr_err("invalid number of raid devices: %s\n",
602 ident
.raid_disks
= s
.raiddisks
;
605 case O(CREATE
,'x'): /* number of spare (eXtra) disks */
607 pr_err("spare-devices set twice: %d and %s\n",
608 s
.sparedisks
, optarg
);
611 if (s
.level
!= UnSet
&& s
.level
<= 0 && s
.level
>= -1) {
612 pr_err("spare-devices setting is incompatible with raid level %d\n",
616 s
.sparedisks
= parse_num(optarg
);
617 if (s
.sparedisks
< 0) {
618 pr_err("invalid number of spare-devices: %s\n",
628 case O(INCREMENTAL
,'a'):
629 case O(INCREMENTAL
,Auto
):
630 case O(ASSEMBLE
,'a'):
631 case O(ASSEMBLE
,Auto
): /* auto-creation of device node */
632 c
.autof
= parse_auto(optarg
, "--auto flag", 0);
635 case O(CREATE
,Symlinks
):
636 case O(BUILD
,Symlinks
):
637 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
641 case O(BUILD
,'f'): /* force honouring '-n 1' */
642 case O(BUILD
,Force
): /* force honouring '-n 1' */
643 case O(GROW
,'f'): /* ditto */
644 case O(GROW
,Force
): /* ditto */
645 case O(CREATE
,'f'): /* force honouring of device list */
646 case O(CREATE
,Force
): /* force honouring of device list */
647 case O(ASSEMBLE
,'f'): /* force assembly */
648 case O(ASSEMBLE
,Force
): /* force assembly */
649 case O(MISC
,'f'): /* force zero */
650 case O(MISC
,Force
): /* force zero */
651 case O(MANAGE
,Force
): /* add device which is too large */
654 /* now for the Assemble options */
655 case O(ASSEMBLE
, FreezeReshape
): /* Freeze reshape during
657 case O(INCREMENTAL
, FreezeReshape
):
658 c
.freeze_reshape
= 1;
660 case O(CREATE
,'u'): /* uuid of array */
661 case O(ASSEMBLE
,'u'): /* uuid of array */
662 if (ident
.uuid_set
) {
663 pr_err("uuid cannot be set twice. "
664 "Second value %s.\n", optarg
);
667 if (parse_uuid(optarg
, ident
.uuid
))
670 pr_err("Bad uuid: %s\n", optarg
);
676 case O(ASSEMBLE
,'N'):
679 pr_err("name cannot be set twice. "
680 "Second value %s.\n", optarg
);
683 if (mode
== MISC
&& !c
.subarray
) {
684 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
687 if (strlen(optarg
) > 32) {
688 pr_err("name '%s' is too long, 32 chars max.\n",
692 strcpy(ident
.name
, optarg
);
695 case O(ASSEMBLE
,'m'): /* super-minor for array */
696 case O(ASSEMBLE
,SuperMinor
):
697 if (ident
.super_minor
!= UnSet
) {
698 pr_err("super-minor cannot be set twice. "
699 "Second value: %s.\n", optarg
);
702 if (strcmp(optarg
, "dev")==0)
703 ident
.super_minor
= -2;
705 ident
.super_minor
= parse_num(optarg
);
706 if (ident
.super_minor
< 0) {
707 pr_err("Bad super-minor number: %s.\n", optarg
);
713 case O(ASSEMBLE
,'o'):
719 case O(ASSEMBLE
,'U'): /* update the superblock */
722 pr_err("Can only update one aspect"
723 " of superblock, both %s and %s given.\n",
727 if (mode
== MISC
&& !c
.subarray
) {
728 pr_err("Only subarrays can be"
729 " updated in misc mode\n");
733 if (strcmp(c
.update
, "sparc2.2")==0)
735 if (strcmp(c
.update
, "super-minor") == 0)
737 if (strcmp(c
.update
, "summaries")==0)
739 if (strcmp(c
.update
, "resync")==0)
741 if (strcmp(c
.update
, "uuid")==0)
743 if (strcmp(c
.update
, "name")==0)
745 if (strcmp(c
.update
, "homehost")==0)
747 if (strcmp(c
.update
, "devicesize")==0)
749 if (strcmp(c
.update
, "no-bitmap")==0)
751 if (strcmp(c
.update
, "bbl") == 0)
753 if (strcmp(c
.update
, "no-bbl") == 0)
755 if (strcmp(c
.update
, "metadata") == 0)
757 if (strcmp(c
.update
, "revert-reshape") == 0)
759 if (strcmp(c
.update
, "byteorder")==0) {
761 pr_err("must not set metadata"
762 " type with --update=byteorder.\n");
765 for(i
=0; !ss
&& superlist
[i
]; i
++)
766 ss
= superlist
[i
]->match_metadata_desc(
769 pr_err("INTERNAL ERROR"
770 " cannot find 0.swap\n");
776 if (strcmp(c
.update
,"?") == 0 ||
777 strcmp(c
.update
, "help") == 0) {
779 fprintf(outf
, Name
": ");
783 Name
": '--update=%s' is invalid. ",
786 fprintf(outf
, "Valid --update options are:\n"
787 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
788 " 'summaries', 'homehost', 'byteorder', 'devicesize',\n"
789 " 'no-bitmap', 'metadata', 'revert-reshape'\n");
790 exit(outf
== stdout
? 0 : 2);
793 /* update=devicesize is allowed with --re-add */
794 if (devmode
!= 'A') {
795 pr_err("--update in Manage mode only"
796 " allowed with --re-add.\n");
800 pr_err("Can only update one aspect"
801 " of superblock, both %s and %s given.\n",
806 if (strcmp(c
.update
, "devicesize") != 0 &&
807 strcmp(c
.update
, "bbl") != 0 &&
808 strcmp(c
.update
, "no-bbl") != 0) {
809 pr_err("only 'devicesize', 'bbl' and 'no-bbl' can be"
810 " updated with --re-add\n");
815 case O(INCREMENTAL
,NoDegraded
):
816 pr_err("--no-degraded is deprecated in Incremental mode\n");
817 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
818 c
.runstop
= -1; /* --stop isn't allowed for --assemble,
819 * so we overload slightly */
822 case O(ASSEMBLE
,'c'):
823 case O(ASSEMBLE
,ConfigFile
):
824 case O(INCREMENTAL
, 'c'):
825 case O(INCREMENTAL
, ConfigFile
):
827 case O(MISC
, ConfigFile
):
829 case O(MONITOR
,ConfigFile
):
830 case O(CREATE
,ConfigFile
):
832 pr_err("configfile cannot be set twice. "
833 "Second value is %s.\n", optarg
);
837 set_conffile(configfile
);
838 /* FIXME possibly check that config file exists. Even parse it */
840 case O(ASSEMBLE
,'s'): /* scan */
843 case O(INCREMENTAL
,'s'):
847 case O(MONITOR
,'m'): /* mail address */
848 case O(MONITOR
,EMail
):
850 pr_err("only specify one mailaddress. %s ignored.\n",
856 case O(MONITOR
,'p'): /* alert program */
857 case O(MONITOR
,ProgramOpt
): /* alert program */
859 pr_err("only specify one alter program. %s ignored.\n",
865 case O(MONITOR
,'r'): /* rebuild increments */
866 case O(MONITOR
,Increment
):
867 increments
= atoi(optarg
);
868 if (increments
> 99 || increments
< 1) {
869 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
874 case O(MONITOR
,'d'): /* delay in seconds */
876 case O(BUILD
,'d'): /* delay for bitmap updates */
879 pr_err("only specify delay once. %s ignored.\n",
882 c
.delay
= parse_num(optarg
);
884 pr_err("invalid delay: %s\n",
890 case O(MONITOR
,'f'): /* daemonise */
891 case O(MONITOR
,Fork
):
894 case O(MONITOR
,'i'): /* pid */
896 pr_err("only specify one pid file. %s ignored.\n",
901 case O(MONITOR
,'1'): /* oneshot */
905 case O(MONITOR
,'t'): /* test */
908 case O(MONITOR
,'y'): /* log messages to syslog */
909 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
912 case O(MONITOR
, NoSharing
):
916 /* now the general management options. Some are applicable
917 * to other modes. None have arguments.
922 case O(MANAGE
,Add
): /* add a drive */
925 case O(MANAGE
,ReAdd
):
928 case O(MANAGE
,'r'): /* remove a drive */
929 case O(MANAGE
,Remove
):
932 case O(MANAGE
,'f'): /* set faulty */
934 case O(INCREMENTAL
,'f'):
935 case O(INCREMENTAL
,Remove
):
936 case O(INCREMENTAL
,Fail
): /* r for incremental is taken, use f
937 * even though we will both fail and
938 * remove the device */
941 case O(MANAGE
,Replace
):
942 /* Mark these devices for replacement */
946 /* These are the replacements to use */
947 if (devmode
!= 'R') {
948 pr_err("--with must follow --replace\n");
953 case O(INCREMENTAL
,'R'):
955 case O(ASSEMBLE
,'R'):
957 case O(CREATE
,'R'): /* Run the array */
959 pr_err("Cannot both Stop and Run an array\n");
966 pr_err("Cannot both Run and Stop an array\n");
978 case O(MISC
,KillOpt
):
982 case O(MISC
, ExamineBB
):
986 case O(MISC
, WaitOpt
):
987 case O(MISC
, Waitclean
):
988 case O(MISC
, DetailPlatform
):
989 case O(MISC
, KillSubarray
):
990 case O(MISC
, UpdateSubarray
):
992 case O(MISC
, Restore
):
993 if (opt
== KillSubarray
|| opt
== UpdateSubarray
) {
995 pr_err("subarray can only"
996 " be specified once\n");
1001 if (devmode
&& devmode
!= opt
&&
1002 (devmode
== 'E' || (opt
== 'E' && devmode
!= 'Q'))) {
1003 pr_err("--examine/-E cannot be given with ");
1004 if (devmode
== 'E') {
1005 if (option_index
>= 0)
1006 fprintf(stderr
, "--%s\n",
1007 long_options
[option_index
].name
);
1009 fprintf(stderr
, "-%c\n", opt
);
1010 } else if (isalpha(devmode
))
1011 fprintf(stderr
, "-%c\n", devmode
);
1013 fprintf(stderr
, "previous option\n");
1017 if (opt
== Dump
|| opt
== Restore
) {
1018 if (dump_directory
!= NULL
) {
1019 pr_err("dump/restore directory specified twice: %s and %s\n",
1020 dump_directory
, optarg
);
1023 dump_directory
= optarg
;
1026 case O(MISC
, UdevRules
):
1027 if (devmode
&& devmode
!= opt
) {
1028 pr_err("--udev-rules must"
1029 " be the only option.\n");
1032 pr_err("only specify one udev "
1033 "rule filename. %s ignored.\n",
1036 udev_filename
= optarg
;
1044 case O(MISC
, Sparc22
):
1045 if (devmode
!= 'E') {
1046 pr_err("--sparc2.2 only allowed with --examine\n");
1052 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
1053 case O(ASSEMBLE
,Bitmap
):
1055 pr_err("bitmap file needed with -b in --assemble mode\n");
1058 if (strcmp(optarg
, "internal")==0) {
1059 pr_err("there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
1062 bitmap_fd
= open(optarg
, O_RDWR
);
1063 if (!*optarg
|| bitmap_fd
< 0) {
1064 pr_err("cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
1067 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
1070 case O(ASSEMBLE
, BackupFile
):
1071 case O(GROW
, BackupFile
):
1072 /* Specify a file into which grow might place a backup,
1073 * or from which assemble might recover a backup
1075 if (c
.backup_file
) {
1076 pr_err("backup file already specified, rejecting %s\n", optarg
);
1079 c
.backup_file
= optarg
;
1082 case O(GROW
, Continue
):
1083 /* Continue interrupted grow
1087 case O(ASSEMBLE
, InvalidBackup
):
1088 /* Acknowledge that the backupfile is invalid, but ask
1089 * to continue anyway
1091 c
.invalid_backup
= 1;
1095 case O(BUILD
,Bitmap
):
1097 case O(CREATE
,Bitmap
): /* here we create the bitmap */
1099 case O(GROW
,Bitmap
):
1100 if (strcmp(optarg
, "internal")== 0 ||
1101 strcmp(optarg
, "none")== 0 ||
1102 strchr(optarg
, '/') != NULL
) {
1103 s
.bitmap_file
= optarg
;
1107 pr_err("bitmap file must contain a '/', or be 'internal', or 'none'\n"
1108 " not '%s'\n", optarg
);
1111 case O(GROW
,BitmapChunk
):
1112 case O(BUILD
,BitmapChunk
):
1113 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
1114 s
.bitmap_chunk
= parse_size(optarg
);
1115 if (s
.bitmap_chunk
== 0 ||
1116 s
.bitmap_chunk
== INVALID_SECTORS
||
1117 s
.bitmap_chunk
& (s
.bitmap_chunk
- 1)) {
1118 pr_err("invalid bitmap chunksize: %s\n",
1122 s
.bitmap_chunk
= s
.bitmap_chunk
* 512;
1125 case O(GROW
, WriteBehind
):
1126 case O(BUILD
, WriteBehind
):
1127 case O(CREATE
, WriteBehind
): /* write-behind mode */
1128 s
.write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
1130 s
.write_behind
= parse_num(optarg
);
1131 if (s
.write_behind
< 0 ||
1132 s
.write_behind
> 16383) {
1133 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
1139 case O(INCREMENTAL
, 'r'):
1140 case O(INCREMENTAL
, RebuildMapOpt
):
1143 case O(INCREMENTAL
, IncrementalPath
):
1144 remove_path
= optarg
;
1147 /* We have now processed all the valid options. Anything else is
1150 if (option_index
> 0)
1151 pr_err(":option --%s not valid in %s mode\n",
1152 long_options
[option_index
].name
,
1153 map_num(modes
, mode
));
1155 pr_err("option -%c not valid in %s mode\n",
1156 opt
, map_num(modes
, mode
));
1163 if (print_help
== 2)
1164 help_text
= OptionHelp
;
1166 help_text
= mode_help
[mode
];
1167 if (help_text
== NULL
)
1169 fputs(help_text
,stdout
);
1173 if (!mode
&& devs_found
) {
1176 if (devlist
->disposition
== 0)
1177 devlist
->disposition
= devmode
;
1180 fputs(Usage
, stderr
);
1185 struct createinfo
*ci
= conf_get_create_info();
1187 if (strcasecmp(symlinks
, "yes") == 0)
1189 else if (strcasecmp(symlinks
, "no") == 0)
1192 pr_err("option --symlinks must be 'no' or 'yes'\n");
1196 /* Ok, got the option parsing out of the way
1197 * hopefully it's mostly right but there might be some stuff
1200 * That is mosty checked in the per-mode stuff but...
1202 * For @,B,C and A without -s, the first device listed must be
1203 * an md device. We check that here and open it.
1206 if (mode
== MANAGE
|| mode
== BUILD
|| mode
== CREATE
1208 || (mode
== ASSEMBLE
&& ! c
.scan
)) {
1209 if (devs_found
< 1) {
1210 pr_err("an md device must be given in this mode\n");
1213 if ((int)ident
.super_minor
== -2 && c
.autof
) {
1214 pr_err("--super-minor=dev is incompatible with --auto\n");
1217 if (mode
== MANAGE
|| mode
== GROW
) {
1218 mdfd
= open_mddev(devlist
->devname
, 1);
1222 /* non-existent device is OK */
1223 mdfd
= open_mddev(devlist
->devname
, 0);
1225 pr_err("device %s exists but is not an "
1226 "md array.\n", devlist
->devname
);
1229 if ((int)ident
.super_minor
== -2) {
1232 pr_err("--super-minor=dev given, and "
1233 "listed device %s doesn't exist.\n",
1238 ident
.super_minor
= minor(stb
.st_rdev
);
1240 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1241 /* We don't really want this open yet, we just might
1242 * have wanted to check some things
1250 if (s
.raiddisks
== 1 && !c
.force
&& s
.level
!= LEVEL_FAULTY
) {
1251 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1252 " a mistake. If you really mean it you will need to specify --force before\n"
1253 " setting the number of drives.\n");
1258 if (c
.homehost
== NULL
)
1259 c
.homehost
= conf_get_homehost(&c
.require_homehost
);
1260 if (c
.homehost
== NULL
|| strcasecmp(c
.homehost
, "<system>")==0) {
1261 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1262 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1263 c
.homehost
= sys_hostname
;
1266 if (c
.homehost
&& (!c
.homehost
[0] || strcasecmp(c
.homehost
, "<none>") == 0)) {
1268 c
.require_homehost
= 0;
1271 if (c
.backup_file
&& data_offset
!= INVALID_SECTORS
) {
1272 pr_err("--backup-file and --data-offset are incompatible\n");
1276 if ((mode
== MISC
&& devmode
== 'E')
1277 || (mode
== MONITOR
&& spare_sharing
== 0))
1278 /* Anyone may try this */;
1279 else if (geteuid() != 0) {
1280 pr_err("must be super-user to perform this action\n");
1284 ident
.autof
= c
.autof
;
1286 if (c
.scan
&& c
.verbose
< 2)
1287 /* --scan implied --brief unless -vv */
1293 /* readonly, add/remove, readwrite, runstop */
1295 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1296 if (!rv
&& devs_found
>1)
1297 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1298 devlist
->next
, c
.verbose
, c
.test
,
1300 if (!rv
&& c
.readonly
< 0)
1301 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1302 if (!rv
&& c
.runstop
> 0)
1303 rv
= Manage_run(devlist
->devname
, mdfd
, c
.verbose
);
1304 if (!rv
&& c
.runstop
< 0)
1305 rv
= Manage_stop(devlist
->devname
, mdfd
, c
.verbose
, 0);
1308 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1309 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 && !c
.scan
) {
1310 /* Only a device has been given, so get details from config file */
1311 struct mddev_ident
*array_ident
= conf_get_ident(devlist
->devname
);
1312 if (array_ident
== NULL
) {
1313 pr_err("%s not identified in config file.\n",
1319 if (array_ident
->autof
== 0)
1320 array_ident
->autof
= c
.autof
;
1321 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1325 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1327 else if (devs_found
> 0) {
1328 if (c
.update
&& devs_found
> 1) {
1329 pr_err("can only update a single array at a time\n");
1332 if (c
.backup_file
&& devs_found
> 1) {
1333 pr_err("can only assemble a single array when providing a backup file.\n");
1336 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1337 struct mddev_ident
*array_ident
= conf_get_ident(dv
->devname
);
1338 if (array_ident
== NULL
) {
1339 pr_err("%s not identified in config file.\n",
1344 if (array_ident
->autof
== 0)
1345 array_ident
->autof
= c
.autof
;
1346 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1351 pr_err("--update not meaningful with a --scan assembly.\n");
1354 if (c
.backup_file
) {
1355 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1358 rv
= scan_assemble(ss
, &c
, &ident
);
1364 c
.delay
= DEFAULT_BITMAP_DELAY
;
1365 if (s
.write_behind
&& !s
.bitmap_file
) {
1366 pr_err("write-behind mode requires a bitmap.\n");
1370 if (s
.raiddisks
== 0) {
1371 pr_err("no raid-devices specified.\n");
1376 if (s
.bitmap_file
) {
1377 if (strcmp(s
.bitmap_file
, "internal")==0) {
1378 pr_err("'internal' bitmaps not supported with --build\n");
1383 rv
= Build(devlist
->devname
, devlist
->next
, &s
, &c
);
1387 c
.delay
= DEFAULT_BITMAP_DELAY
;
1388 if (s
.write_behind
&& !s
.bitmap_file
) {
1389 pr_err("write-behind mode requires a bitmap.\n");
1393 if (s
.raiddisks
== 0) {
1394 pr_err("no raid-devices specified.\n");
1399 rv
= Create(ss
, devlist
->devname
,
1400 ident
.name
, ident
.uuid_set
? ident
.uuid
: NULL
,
1401 devs_found
-1, devlist
->next
,
1402 &s
, &c
, data_offset
);
1405 if (devmode
== 'E') {
1406 if (devlist
== NULL
&& !c
.scan
) {
1407 pr_err("No devices to examine\n");
1410 if (devlist
== NULL
)
1411 devlist
= conf_get_devs();
1412 if (devlist
== NULL
) {
1413 pr_err("No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1416 rv
= Examine(devlist
, &c
, ss
);
1417 } else if (devmode
== DetailPlatform
) {
1418 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? c
.scan
: 1,
1419 c
.verbose
, c
.export
,
1420 devlist
? devlist
->devname
: NULL
);
1421 } else if (devlist
== NULL
) {
1422 if (devmode
== 'S' && c
.scan
)
1423 rv
= stop_scan(c
.verbose
);
1424 else if ((devmode
== 'D' || devmode
== Waitclean
) && c
.scan
)
1425 rv
= misc_scan(devmode
, &c
);
1426 else if (devmode
== UdevRules
)
1427 rv
= Write_rules(udev_filename
);
1429 pr_err("No devices given.\n");
1433 rv
= misc_list(devlist
, &ident
, dump_directory
, ss
, &c
);
1436 if (!devlist
&& !c
.scan
) {
1437 pr_err("Cannot monitor: need --scan or at least one device\n");
1441 if (pidfile
&& !daemonise
) {
1442 pr_err("Cannot write a pid file when not in daemon mode\n");
1447 if (get_linux_version() > 2006016)
1448 /* mdstat responds to poll */
1455 rv
= Monitor(devlist
, mailaddr
, program
,
1456 &c
, daemonise
, oneshot
,
1457 dosyslog
, pidfile
, increments
,
1462 if (array_size
> 0) {
1463 /* alway impose array size first, independent of
1465 * Do not allow level or raid_disks changes at the
1466 * same time as that can be irreversibly destructive.
1470 if (s
.raiddisks
|| s
.level
!= UnSet
) {
1471 pr_err("cannot change array size in same operation "
1472 "as changing raiddisks or level.\n"
1473 " Change size first, then check that data is still intact.\n");
1477 sysfs_init(&sra
, mdfd
, NULL
);
1478 if (array_size
== MAX_SIZE
)
1479 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1481 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1484 pr_err("--array-size setting"
1485 " is too large.\n");
1487 pr_err("current kernel does"
1488 " not support setting --array-size\n");
1493 if (devs_found
> 1 && s
.raiddisks
== 0 && s
.level
== UnSet
) {
1495 if (s
.size
> 0 || s
.chunk
|| s
.layout_str
!= NULL
|| s
.bitmap_file
) {
1496 pr_err("--add cannot be used with "
1497 "other geometry changes in --grow mode\n");
1501 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1502 rv
= Grow_Add_device(devlist
->devname
, mdfd
,
1507 } else if (s
.bitmap_file
) {
1508 if (s
.size
> 0 || s
.raiddisks
|| s
.chunk
||
1509 s
.layout_str
!= NULL
|| devs_found
> 1) {
1510 pr_err("--bitmap changes cannot be "
1511 "used with other geometry changes "
1512 "in --grow mode\n");
1517 c
.delay
= DEFAULT_BITMAP_DELAY
;
1518 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, &c
, &s
);
1519 } else if (grow_continue
)
1520 rv
= Grow_continue_command(devlist
->devname
,
1521 mdfd
, c
.backup_file
,
1523 else if (s
.size
> 0 || s
.raiddisks
|| s
.layout_str
!= NULL
1524 || s
.chunk
!= 0 || s
.level
!= UnSet
1525 || data_offset
!= INVALID_SECTORS
) {
1526 rv
= Grow_reshape(devlist
->devname
, mdfd
,
1528 data_offset
, &c
, &s
);
1529 } else if (array_size
== 0)
1530 pr_err("no changes to --grow\n");
1537 if (c
.runstop
<= 0) {
1538 pr_err("--incremental --scan meaningless without --run.\n");
1541 if (devmode
== 'f') {
1542 pr_err("--incremental --scan --fail not supported.\n");
1545 rv
= IncrementalScan(c
.verbose
);
1548 if (!rebuild_map
&& !c
.scan
) {
1549 pr_err("--incremental requires a device.\n");
1554 if (devlist
->next
) {
1555 pr_err("--incremental can only handle one device.\n");
1560 rv
= IncrementalRemove(devlist
->devname
, remove_path
,
1563 rv
= Incremental(devlist
->devname
, &c
, ss
);
1572 static int scan_assemble(struct supertype
*ss
,
1574 struct mddev_ident
*ident
)
1576 struct mddev_ident
*a
, *array_list
= conf_get_ident(NULL
);
1577 struct mddev_dev
*devlist
= conf_get_devs();
1578 struct map_ent
*map
= NULL
;
1581 int failures
, successes
;
1583 if (conf_verify_devnames(array_list
)) {
1584 pr_err("Duplicate MD device names in "
1585 "conf file were found.\n");
1588 if (devlist
== NULL
) {
1589 pr_err("No devices listed in conf file were found.\n");
1592 for (a
= array_list
; a
; a
= a
->next
) {
1595 a
->autof
= c
->autof
;
1598 pr_err("%s: failed to get "
1599 "exclusive lock on mapfile\n",
1605 for (a
= array_list
; a
; a
= a
->next
) {
1610 strcasecmp(a
->devname
, "<ignore>") == 0)
1613 r
= Assemble(ss
, a
->devname
,
1623 } while (failures
&& successes
);
1624 if (c
->homehost
&& cnt
== 0) {
1625 /* Maybe we can auto-assemble something.
1626 * Repeatedly call Assemble in auto-assemble mode
1631 ident
->autof
= c
->autof
;
1633 struct mddev_dev
*devlist
= conf_get_devs();
1636 rv2
= Assemble(ss
, NULL
,
1644 /* Incase there are stacked devices, we need to go around again */
1646 if (cnt
== 0 && rv
== 0) {
1647 pr_err("No arrays found in config file or automatically\n");
1651 } else if (cnt
== 0 && rv
== 0) {
1652 pr_err("No arrays found in config file\n");
1659 static int misc_scan(char devmode
, struct context
*c
)
1661 /* apply --detail or --wait-clean to
1662 * all devices in /proc/mdstat
1664 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1665 struct mdstat_ent
*e
;
1666 struct map_ent
*map
= NULL
;
1670 for (members
= 0; members
<= 1; members
++) {
1671 for (e
=ms
; e
; e
=e
->next
) {
1675 int member
= e
->metadata_version
&&
1676 strncmp(e
->metadata_version
,
1677 "external:/", 10) == 0;
1678 if (members
!= member
)
1680 me
= map_by_devnm(&map
, e
->devnm
);
1682 && strcmp(me
->path
, "/unknown") != 0)
1685 stat(name
, &stb
) != 0)
1686 name
= get_md_name(e
->devnm
);
1689 pr_err("cannot find device file for %s\n",
1694 rv
|= Detail(name
, c
);
1696 rv
|= WaitClean(name
, -1, c
->verbose
);
1704 static int stop_scan(int verbose
)
1706 /* apply --stop to all devices in /proc/mdstat */
1707 /* Due to possible stacking of devices, repeat until
1708 * nothing more can be stopped
1710 int progress
=1, err
;
1714 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1715 struct mdstat_ent
*e
;
1717 if (!progress
) last
= 1;
1718 progress
= 0; err
= 0;
1719 for (e
=ms
; e
; e
=e
->next
) {
1720 char *name
= get_md_name(e
->devnm
);
1724 pr_err("cannot find device file for %s\n",
1728 mdfd
= open_mddev(name
, 1);
1730 if (Manage_stop(name
, mdfd
, verbose
, !last
))
1740 } while (!last
&& err
);
1746 static int misc_list(struct mddev_dev
*devlist
,
1747 struct mddev_ident
*ident
,
1748 char *dump_directory
,
1749 struct supertype
*ss
, struct context
*c
)
1751 struct mddev_dev
*dv
;
1754 for (dv
=devlist
; dv
; dv
=(rv
& 16) ? NULL
: dv
->next
) {
1757 switch(dv
->disposition
) {
1759 rv
|= Detail(dv
->devname
, c
);
1761 case KillOpt
: /* Zero superblock */
1763 rv
|= Kill(dv
->devname
, ss
, c
->force
, c
->verbose
,0);
1767 rv
|= Kill(dv
->devname
, NULL
, c
->force
, v
, 0);
1774 rv
|= Query(dv
->devname
); continue;
1776 rv
|= ExamineBitmap(dv
->devname
, c
->brief
, ss
); continue;
1778 rv
|= ExamineBadblocks(dv
->devname
, c
->brief
, ss
); continue;
1781 rv
|= Wait(dv
->devname
); continue;
1783 rv
|= WaitClean(dv
->devname
, -1, c
->verbose
); continue;
1785 rv
|= Kill_subarray(dv
->devname
, c
->subarray
, c
->verbose
);
1787 case UpdateSubarray
:
1788 if (c
->update
== NULL
) {
1789 pr_err("-U/--update must be specified with --update-subarray\n");
1793 rv
|= Update_subarray(dv
->devname
, c
->subarray
,
1794 c
->update
, ident
, c
->verbose
);
1797 rv
|= Dump_metadata(dv
->devname
, dump_directory
, c
, ss
);
1800 rv
|= Restore_metadata(dv
->devname
, dump_directory
, c
, ss
,
1801 (dv
== devlist
&& dv
->next
== NULL
));
1804 if (dv
->devname
[0] == '/')
1805 mdfd
= open_mddev(dv
->devname
, 1);
1807 mdfd
= open_dev(dv
->devname
);
1809 pr_err("Cannot open %s\n", dv
->devname
);
1812 switch(dv
->disposition
) {
1814 rv
|= Manage_run(dv
->devname
, mdfd
, c
->verbose
); break;
1816 rv
|= Manage_stop(dv
->devname
, mdfd
, c
->verbose
, 0); break;
1818 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1820 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;