2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2006 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@cse.unsw.edu.au>
24 * School of Computer Science and Engineering
25 * The University of New South Wales
29 * Additions for bitmap and write-behind RAID options, Copyright (C) 2003-2004,
30 * Paul Clements, SteelEye Technology, Inc.
38 int main(int argc
, char *argv
[])
49 long long array_size
= -1;
53 int max_disks
= MD_SB_DISKS
; /* just a default */
55 struct mddev_ident_s ident
;
56 char *configfile
= NULL
;
65 char *bitmap_file
= NULL
;
66 char *backup_file
= NULL
;
67 int bitmap_chunk
= UnSet
;
69 mddev_dev_t devlist
= NULL
;
70 mddev_dev_t
*devlistend
= & devlist
;
80 char *symlinks
= NULL
;
81 /* autof indicates whether and how to create device node.
82 * bottom 3 bits are style. Rest (when shifted) are number of parts
84 * 1 - don't create (no)
85 * 2 - if is_standard, then create (yes)
86 * 3 - create as 'md' - reject is_standard mdp (md)
87 * 4 - create as 'mdp' - reject is_standard md (mdp)
88 * 5 - default to md if not is_standard (md in config file)
89 * 6 - default to mdp if not is_standard (part, or mdp in config file)
93 char *homehost
= NULL
;
94 char sys_hostname
[256];
95 int require_homehost
= 1;
96 char *mailaddr
= NULL
;
100 char *pidfile
= NULL
;
102 struct supertype
*ss
= NULL
;
105 char *shortopt
= short_options
;
108 int auto_update_home
= 0;
116 srandom(time(0) ^ getpid());
120 ident
.raid_disks
= UnSet
;
121 ident
.super_minor
= UnSet
;
123 ident
.spare_group
= NULL
;
126 ident
.bitmap_fd
= -1;
127 ident
.bitmap_file
= NULL
;
129 ident
.container
= NULL
;
132 while ((option_index
= -1) ,
133 (opt
=getopt_long(argc
, argv
,
134 shortopt
, long_options
,
135 &option_index
)) != -1) {
137 /* firstly, some mode-independent options */
140 if (option_index
> 0 &&
141 strcmp(long_options
[option_index
].name
, "help-options")==0)
148 fputs(Version
, stderr
);
158 if (mode
== ASSEMBLE
|| mode
== BUILD
|| mode
== CREATE
|| mode
== GROW
)
159 break; /* b means bitmap */
162 fprintf(stderr
, Name
": -b cannot have any extra immediately after it, sorry.\n");
171 if (strcasecmp(optarg
, "<ignore>") == 0)
172 require_homehost
= 0;
179 fputs(Usage
, stderr
);
182 /* second, figure out the mode.
183 * Some options force the mode. Others
184 * set the mode if it isn't already
188 case '@': /* just incase they say --manage */
190 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;
226 case 'K': if (!mode
) newmode
= MISC
; break;
228 if (mode
&& newmode
== mode
) {
229 /* everybody happy ! */
230 } else if (mode
&& newmode
!= mode
) {
232 fprintf(stderr
, Name
": ");
233 if (option_index
>= 0)
234 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
236 fprintf(stderr
, "-%c", opt
);
237 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
238 map_num(modes
, newmode
),
239 map_num(modes
, mode
));
241 } else if (!mode
&& newmode
) {
244 /* special case of -c --help */
246 ( strncmp(optarg
, "--h", 3)==0 ||
247 strncmp(optarg
, "-h", 2)==0)) {
248 fputs(Help_config
, stdout
);
252 /* If first option is a device, don't force the mode yet */
254 if (devs_found
== 0) {
255 dv
= malloc(sizeof(*dv
));
257 fprintf(stderr
, Name
": malloc failed\n");
260 dv
->devname
= optarg
;
261 dv
->disposition
= devmode
;
262 dv
->writemostly
= writemostly
;
268 devlistend
= &dv
->next
;
273 /* No mode yet, and this is the second device ... */
274 fprintf(stderr
, Name
": An option must be given to set the mode before a second device is listed\n");
277 if (option_index
>= 0)
278 fprintf(stderr
, Name
": --%s", long_options
[option_index
].name
);
280 fprintf(stderr
, Name
": -%c", opt
);
281 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
285 /* if we just set the mode, then done */
299 /* an undecorated option - must be a device name.
301 if (devs_found
> 0 && mode
== '@' && !devmode
) {
302 fprintf(stderr
, Name
": Must give one of -a/-r/-f for subsequent devices at %s\n", optarg
);
305 if (devs_found
> 0 && mode
== 'G' && !devmode
) {
306 fprintf(stderr
, Name
": Must give one of -a for devices do add: %s\n", optarg
);
309 dv
= malloc(sizeof(*dv
));
311 fprintf(stderr
, Name
": malloc failed\n");
314 dv
->devname
= optarg
;
315 dv
->disposition
= devmode
;
316 dv
->writemostly
= writemostly
;
322 devlistend
= &dv
->next
;
328 /* We've got a mode, and opt is now something else which
329 * could depend on the mode */
330 #define O(a,b) ((a<<8)|b)
331 switch (O(mode
,opt
)) {
333 case O(BUILD
,'c'): /* chunk or rounding */
335 fprintf(stderr
, Name
": chunk/rounding may only be specified once. "
336 "Second value is %s.\n", optarg
);
339 chunk
= strtol(optarg
, &c
, 10);
340 if (!optarg
[0] || *c
|| chunk
<4 || ((chunk
-1)&chunk
)) {
341 fprintf(stderr
, Name
": invalid chunk/rounding value: %s\n",
347 case O(ASSEMBLE
,AutoHomeHost
):
348 auto_update_home
= 1;
350 case O(INCREMENTAL
, 'e'):
352 case O(ASSEMBLE
,'e'):
353 case O(MISC
,'e'): /* set metadata (superblock) information */
355 fprintf(stderr
, Name
": metadata information already given\n");
358 for(i
=0; !ss
&& superlist
[i
]; i
++)
359 ss
= superlist
[i
]->match_metadata_desc(optarg
);
362 fprintf(stderr
, Name
": unrecognised metadata identifier: %s\n", optarg
);
365 max_disks
= ss
->max_devs
;
371 /* set write-mostly for following devices */
376 /* clear write-mostly for following devices */
383 case O(BUILD
,'z'): /* size */
385 fprintf(stderr
, Name
": size may only be specified once. "
386 "Second value is %s.\n", optarg
);
389 if (strcmp(optarg
, "max")==0)
392 size
= strtoll(optarg
, &c
, 10);
393 if (!optarg
[0] || *c
|| size
< 4) {
394 fprintf(stderr
, Name
": invalid size: %s\n",
401 case O(GROW
,'Z'): /* array size */
402 if (array_size
>= 0) {
403 fprintf(stderr
, Name
": array-size may only be specified once. "
404 "Second value is %s.\n", optarg
);
407 if (strcmp(optarg
, "max") == 0)
410 array_size
= parse_size(optarg
);
411 if (array_size
<= 0) {
412 fprintf(stderr
, Name
": invalid array size: %s\n",
419 case O(GROW
,'l'): /* hack - needed to understand layout */
421 case O(BUILD
,'l'): /* set raid level*/
422 if (level
!= UnSet
) {
423 fprintf(stderr
, Name
": raid level may only be set once. "
424 "Second value is %s.\n", optarg
);
427 level
= map_name(pers
, optarg
);
428 if (level
== UnSet
) {
429 fprintf(stderr
, Name
": invalid raid level: %s\n",
433 if (level
!= 0 && level
!= -1 && level
!= 1 && level
!= -4 && level
!= -5 && mode
== BUILD
) {
434 fprintf(stderr
, Name
": Raid level %s not permitted with --build.\n",
438 if (sparedisks
> 0 && level
< 1 && level
>= -1) {
439 fprintf(stderr
, Name
": raid level %s is incompatible with spare-devices setting.\n",
446 case O(CREATE
,'p'): /* raid5 layout */
447 case O(BUILD
,'p'): /* faulty layout */
448 case O(GROW
, 'p'): /* faulty reconfig */
449 if (layout
!= UnSet
) {
450 fprintf(stderr
,Name
": layout may only be sent once. "
451 "Second value was %s\n", optarg
);
456 fprintf(stderr
, Name
": layout not meaningful for %s arrays.\n",
457 map_num(pers
, level
));
460 fprintf(stderr
, Name
": raid level must be given before layout.\n");
464 layout
= map_name(r5layout
, optarg
);
466 fprintf(stderr
, Name
": layout %s not understood for raid5.\n",
472 layout
= map_name(r6layout
, optarg
);
474 fprintf(stderr
, Name
": layout %s not understood for raid6.\n",
481 /* 'f', 'o' or 'n' followed by a number <= raid_disks */
482 if ((optarg
[0] != 'n' && optarg
[0] != 'f' && optarg
[0] != 'o') ||
483 (copies
= strtoul(optarg
+1, &cp
, 10)) < 1 ||
486 fprintf(stderr
, Name
": layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
489 if (optarg
[0] == 'n')
490 layout
= 256 + copies
;
491 else if (optarg
[0] == 'o')
492 layout
= 0x10000 + (copies
<<8) + 1;
494 layout
= 1 + (copies
<<8);
501 int ln
= strcspn(optarg
, "0123456789");
502 char *m
= strdup(optarg
);
505 mode
= map_name(faultylayout
, m
);
507 fprintf(stderr
, Name
": layout %s not understood for faulty.\n",
511 layout
= mode
| (atoi(optarg
+ln
)<< ModeShift
);
516 case O(CREATE
,AssumeClean
):
517 case O(BUILD
,AssumeClean
): /* assume clean */
523 case O(BUILD
,'n'): /* number of raid disks */
525 fprintf(stderr
, Name
": raid-devices set twice: %d and %s\n",
529 raiddisks
= strtol(optarg
, &c
, 10);
530 if (!optarg
[0] || *c
|| raiddisks
<=0) {
531 fprintf(stderr
, Name
": invalid number of raid devices: %s\n",
535 ident
.raid_disks
= raiddisks
;
538 case O(CREATE
,'x'): /* number of spare (eXtra) discs */
540 fprintf(stderr
,Name
": spare-devices set twice: %d and %s\n",
544 if (level
!= UnSet
&& level
<= 0 && level
>= -1) {
545 fprintf(stderr
, Name
": spare-devices setting is incompatible with raid level %d\n",
549 sparedisks
= strtol(optarg
, &c
, 10);
550 if (!optarg
[0] || *c
|| sparedisks
< 0) {
551 fprintf(stderr
, Name
": invalid number of spare-devices: %s\n",
559 case O(INCREMENTAL
,'a'):
560 case O(ASSEMBLE
,'a'): /* auto-creation of device node */
561 autof
= parse_auto(optarg
, "--auto flag", 0);
564 case O(CREATE
,Symlinks
):
565 case O(BUILD
,Symlinks
):
566 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
570 case O(BUILD
,'f'): /* force honouring '-n 1' */
571 case O(GROW
,'f'): /* ditto */
572 case O(CREATE
,'f'): /* force honouring of device list */
573 case O(ASSEMBLE
,'f'): /* force assembly */
574 case O(MISC
,'f'): /* force zero */
578 /* now for the Assemble options */
579 case O(CREATE
,'u'): /* uuid of array */
580 case O(ASSEMBLE
,'u'): /* uuid of array */
581 if (ident
.uuid_set
) {
582 fprintf(stderr
, Name
": uuid cannot be set twice. "
583 "Second value %s.\n", optarg
);
586 if (parse_uuid(optarg
, ident
.uuid
))
589 fprintf(stderr
,Name
": Bad uuid: %s\n", optarg
);
595 case O(ASSEMBLE
,'N'):
597 fprintf(stderr
, Name
": name cannot be set twice. "
598 "Second value %s.\n", optarg
);
601 if (strlen(optarg
) > 32) {
602 fprintf(stderr
, Name
": name '%s' is too long, 32 chars max.\n",
606 strcpy(ident
.name
, optarg
);
609 case O(ASSEMBLE
,'m'): /* super-minor for array */
610 if (ident
.super_minor
!= UnSet
) {
611 fprintf(stderr
, Name
": super-minor cannot be set twice. "
612 "Second value: %s.\n", optarg
);
615 if (strcmp(optarg
, "dev")==0)
616 ident
.super_minor
= -2;
618 ident
.super_minor
= strtoul(optarg
, &cp
, 10);
619 if (!optarg
[0] || *cp
) {
620 fprintf(stderr
, Name
": Bad super-minor number: %s.\n", optarg
);
626 case O(ASSEMBLE
,'U'): /* update the superblock */
628 fprintf(stderr
, Name
": Can only update one aspect of superblock, both %s and %s given.\n",
633 if (strcmp(update
, "sparc2.2")==0)
635 if (strcmp(update
, "super-minor") == 0)
637 if (strcmp(update
, "summaries")==0)
639 if (strcmp(update
, "resync")==0)
641 if (strcmp(update
, "uuid")==0)
643 if (strcmp(update
, "name")==0)
645 if (strcmp(update
, "homehost")==0)
647 if (strcmp(update
, "devicesize")==0)
649 if (strcmp(update
, "byteorder")==0) {
651 fprintf(stderr
, Name
": must not set metadata type with --update=byteorder.\n");
654 for(i
=0; !ss
&& superlist
[i
]; i
++)
655 ss
= superlist
[i
]->match_metadata_desc("0.swap");
657 fprintf(stderr
, Name
": INTERNAL ERROR cannot find 0.swap\n");
663 if (strcmp(update
,"?") == 0 ||
664 strcmp(update
, "help") == 0) {
666 fprintf(outf
, Name
": ");
670 Name
": '--update=%s' is invalid. ",
673 fprintf(outf
, "Valid --update options are:\n"
674 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
675 " 'summaries', 'homehost', 'byteorder', 'devicesize'.\n");
676 exit(outf
== stdout
? 0 : 2);
678 case O(INCREMENTAL
,NoDegraded
):
679 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
680 runstop
= -1; /* --stop isn't allowed for --assemble,
681 * so we overload slightly */
684 case O(ASSEMBLE
,'c'): /* config file */
685 case O(INCREMENTAL
, 'c'):
689 fprintf(stderr
, Name
": configfile cannot be set twice. "
690 "Second value is %s.\n", optarg
);
694 set_conffile(configfile
);
695 /* FIXME possibly check that config file exists. Even parse it */
697 case O(ASSEMBLE
,'s'): /* scan */
700 case O(INCREMENTAL
,'s'):
704 case O(MONITOR
,'m'): /* mail address */
706 fprintf(stderr
, Name
": only specify one mailaddress. %s ignored.\n",
712 case O(MONITOR
,'p'): /* alert program */
714 fprintf(stderr
, Name
": only specify one alter program. %s ignored.\n",
720 case O(MONITOR
,'d'): /* delay in seconds */
722 case O(BUILD
,'d'): /* delay for bitmap updates */
725 fprintf(stderr
, Name
": only specify delay once. %s ignored.\n",
728 delay
= strtol(optarg
, &c
, 10);
729 if (!optarg
[0] || *c
|| delay
<1) {
730 fprintf(stderr
, Name
": invalid delay: %s\n",
736 case O(MONITOR
,'f'): /* daemonise */
739 case O(MONITOR
,'i'): /* pid */
741 fprintf(stderr
, Name
": only specify one pid file. %s ignored.\n",
746 case O(MONITOR
,'1'): /* oneshot */
749 case O(MONITOR
,'t'): /* test */
752 case O(MONITOR
,'y'): /* log messages to syslog */
753 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
757 /* now the general management options. Some are applicable
758 * to other modes. None have arguments.
761 case O(MANAGE
,'a'): /* add a drive */
765 case O(MANAGE
,ReAdd
):
769 case O(MANAGE
,'r'): /* remove a drive */
772 case O(MANAGE
,'f'): /* set faulty */
775 case O(INCREMENTAL
,'R'):
777 case O(ASSEMBLE
,'R'):
779 case O(CREATE
,'R'): /* Run the array */
781 fprintf(stderr
, Name
": Cannot both Stop and Run an array\n");
788 fprintf(stderr
, Name
": Cannot both Run and Stop an array\n");
804 case O(MISC
, Waitclean
):
805 case O(MISC
, DetailPlatform
):
806 if (devmode
&& devmode
!= opt
&&
807 (devmode
== 'E' || (opt
== 'E' && devmode
!= 'Q'))) {
808 fprintf(stderr
, Name
": --examine/-E cannot be given with -%c\n",
809 devmode
=='E'?opt
:devmode
);
818 case O(MISC
, Sparc22
):
819 if (devmode
!= 'E') {
820 fprintf(stderr
, Name
": --sparc2.2 only allowed with --examine\n");
826 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
828 fprintf(stderr
, Name
": bitmap file needed with -b in --assemble mode\n");
831 if (strcmp(optarg
, "internal")==0) {
832 fprintf(stderr
, Name
": there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
835 bitmap_fd
= open(optarg
, O_RDWR
);
836 if (!*optarg
|| bitmap_fd
< 0) {
837 fprintf(stderr
, Name
": cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
840 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
843 case O(ASSEMBLE
, BackupFile
):
844 case O(GROW
, BackupFile
):
845 /* Specify a file into which grow might place a backup,
846 * or from which assemble might recover a backup
849 fprintf(stderr
, Name
": backup file already specified, rejecting %s\n", optarg
);
852 backup_file
= optarg
;
856 case O(CREATE
,'b'): /* here we create the bitmap */
857 if (strcmp(optarg
, "none") == 0) {
858 fprintf(stderr
, Name
": '--bitmap none' only"
859 " support for --grow\n");
864 if (strcmp(optarg
, "internal")== 0 ||
865 strcmp(optarg
, "none")== 0 ||
866 strchr(optarg
, '/') != NULL
) {
867 bitmap_file
= optarg
;
871 fprintf(stderr
, Name
": bitmap file must contain a '/', or be 'internal', or 'none'\n");
874 case O(GROW
,BitmapChunk
):
875 case O(BUILD
,BitmapChunk
):
876 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
877 bitmap_chunk
= strtol(optarg
, &c
, 10);
878 if (!optarg
[0] || *c
|| bitmap_chunk
< 0 ||
879 bitmap_chunk
& (bitmap_chunk
- 1)) {
880 fprintf(stderr
, Name
": invalid bitmap chunksize: %s\n",
884 /* convert K to B, chunk of 0K means 512B */
885 bitmap_chunk
= bitmap_chunk
? bitmap_chunk
* 1024 : 512;
888 case O(GROW
, WriteBehind
):
889 case O(BUILD
, WriteBehind
):
890 case O(CREATE
, WriteBehind
): /* write-behind mode */
891 write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
893 write_behind
= strtol(optarg
, &c
, 10);
894 if (write_behind
< 0 || *c
||
895 write_behind
> 16383) {
896 fprintf(stderr
, Name
": Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
902 case O(INCREMENTAL
, 'r'):
906 /* We have now processed all the valid options. Anything else is
909 if (option_index
> 0)
910 fprintf(stderr
, Name
":option --%s not valid in %s mode\n",
911 long_options
[option_index
].name
,
912 map_num(modes
, mode
));
914 fprintf(stderr
, Name
": option -%c not valid in %s mode\n",
915 opt
, map_num(modes
, mode
));
921 char *help_text
= Help
;
923 help_text
= OptionHelp
;
926 case ASSEMBLE
: help_text
= Help_assemble
; break;
927 case BUILD
: help_text
= Help_build
; break;
928 case CREATE
: help_text
= Help_create
; break;
929 case MANAGE
: help_text
= Help_manage
; break;
930 case MISC
: help_text
= Help_misc
; break;
931 case MONITOR
: help_text
= Help_monitor
; break;
932 case GROW
: help_text
= Help_grow
; break;
933 case INCREMENTAL
:help_text
= Help_incr
; break;
935 fputs(help_text
,stdout
);
939 if (!mode
&& devs_found
) {
942 if (devlist
->disposition
== 0)
943 devlist
->disposition
= devmode
;
946 fputs(Usage
, stderr
);
951 struct createinfo
*ci
= conf_get_create_info();
953 if (strcasecmp(symlinks
, "yes") == 0)
955 else if (strcasecmp(symlinks
, "no") == 0)
958 fprintf(stderr
, Name
": option --symlinks must be 'no' or 'yes'\n");
962 /* Ok, got the option parsing out of the way
963 * hopefully it's mostly right but there might be some stuff
966 * That is mosty checked in the per-mode stuff but...
968 * For @,B,C and A without -s, the first device listed must be an md device
969 * we check that here and open it.
972 if (mode
==MANAGE
|| mode
== BUILD
|| mode
== CREATE
|| mode
== GROW
||
973 (mode
== ASSEMBLE
&& ! scan
)) {
974 if (devs_found
< 1) {
975 fprintf(stderr
, Name
": an md device must be given in this mode\n");
978 if ((int)ident
.super_minor
== -2 && autof
) {
979 fprintf(stderr
, Name
": --super-minor=dev is incompatible with --auto\n");
982 if (mode
== MANAGE
|| mode
== GROW
) {
983 mdfd
= open_mddev(devlist
->devname
, 1);
987 /* non-existent device is OK */
988 mdfd
= open_mddev(devlist
->devname
, 0);
990 fprintf(stderr
, Name
": device %s exists but is not an "
991 "md array.\n", devlist
->devname
);
994 if ((int)ident
.super_minor
== -2) {
997 fprintf(stderr
, Name
": --super-minor=dev given, and "
998 "listed device %s doesn't exist.\n",
1003 ident
.super_minor
= minor(stb
.st_rdev
);
1005 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1006 /* We don't really want this open yet, we just might
1007 * have wanted to check some things
1015 if (raiddisks
> max_disks
) {
1016 fprintf(stderr
, Name
": invalid number of raid devices: %d\n",
1020 if (raiddisks
== 1 && !force
&& level
!= -5) {
1021 fprintf(stderr
, Name
": '1' is an unusual number of drives for an array, so it is probably\n"
1022 " a mistake. If you really mean it you will need to specify --force before\n"
1023 " setting the number of drives.\n");
1028 if ( sparedisks
> max_disks
- raiddisks
) {
1029 fprintf(stderr
, Name
": invalid number of spare-devices: %d\n",
1035 if (homehost
== NULL
)
1036 homehost
= conf_get_homehost(&require_homehost
);
1037 if (homehost
== NULL
|| strcmp(homehost
, "<system>")==0) {
1038 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1039 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1040 homehost
= sys_hostname
;
1044 ident
.autof
= autof
;
1049 /* readonly, add/remove, readwrite, runstop */
1051 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1052 if (!rv
&& devs_found
>1)
1053 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1054 devlist
->next
, verbose
-quiet
);
1055 if (!rv
&& readonly
< 0)
1056 rv
= Manage_ro(devlist
->devname
, mdfd
, readonly
);
1058 rv
= Manage_runstop(devlist
->devname
, mdfd
, runstop
, quiet
);
1061 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1062 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 && !scan
) {
1063 /* Only a device has been given, so get details from config file */
1064 mddev_ident_t array_ident
= conf_get_ident(devlist
->devname
);
1065 if (array_ident
== NULL
) {
1066 fprintf(stderr
, Name
": %s not identified in config file.\n",
1072 if (array_ident
->autof
== 0)
1073 array_ident
->autof
= autof
;
1074 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1076 readonly
, runstop
, update
,
1077 homehost
, require_homehost
,
1078 verbose
-quiet
, force
);
1081 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1082 devlist
->next
, backup_file
,
1083 readonly
, runstop
, update
,
1084 homehost
, require_homehost
,
1085 verbose
-quiet
, force
);
1086 else if (devs_found
>0) {
1087 if (update
&& devs_found
> 1) {
1088 fprintf(stderr
, Name
": can only update a single array at a time\n");
1091 if (backup_file
&& devs_found
> 1) {
1092 fprintf(stderr
, Name
": can only assemble a single array when providing a backup file.\n");
1095 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1096 mddev_ident_t array_ident
= conf_get_ident(dv
->devname
);
1097 if (array_ident
== NULL
) {
1098 fprintf(stderr
, Name
": %s not identified in config file.\n",
1103 if (array_ident
->autof
== 0)
1104 array_ident
->autof
= autof
;
1105 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1107 readonly
, runstop
, update
,
1108 homehost
, require_homehost
,
1109 verbose
-quiet
, force
);
1112 mddev_ident_t array_list
= conf_get_ident(NULL
);
1113 mddev_dev_t devlist
= conf_get_devs();
1115 if (devlist
== NULL
) {
1116 fprintf(stderr
, Name
": No devices listed in conf file were found.\n");
1120 fprintf(stderr
, Name
": --update not meaningful with a --scan assembly.\n");
1124 fprintf(stderr
, Name
": --backup_file not meaningful with a --scan assembly.\n");
1127 for (; array_list
; array_list
= array_list
->next
) {
1128 if (array_list
->devname
&&
1129 strcasecmp(array_list
->devname
, "<ignore>") == 0)
1131 if (array_list
->autof
== 0)
1132 array_list
->autof
= autof
;
1134 rv
|= Assemble(ss
, array_list
->devname
,
1137 readonly
, runstop
, NULL
,
1138 homehost
, require_homehost
,
1139 verbose
-quiet
, force
);
1142 if (homehost
&& cnt
== 0) {
1143 /* Maybe we can auto-assemble something.
1144 * Repeatedly call Assemble in auto-assemble mode
1149 ident
.autof
= autof
;
1151 mddev_dev_t devlist
= conf_get_devs();
1154 rv2
= Assemble(ss
, NULL
,
1157 readonly
, runstop
, NULL
,
1158 homehost
, require_homehost
,
1159 verbose
-quiet
, force
);
1165 /* found something so even though assembly failed we
1166 * want to avoid auto-updates
1168 auto_update_home
= 0;
1170 /* Incase there are stacked devices, we need to go around again */
1172 if (cnt
== 0 && auto_update_home
&& homehost
) {
1173 /* Nothing found, maybe we need to bootstrap homehost info */
1177 rv2
= Assemble(ss
, NULL
,
1180 readonly
, runstop
, "homehost",
1181 homehost
, require_homehost
,
1182 verbose
-quiet
, force
);
1188 /* Incase there are stacked devices, we need to go around again */
1191 if (cnt
== 0 && rv
== 0) {
1192 fprintf(stderr
, Name
": No arrays found in config file or automatically\n");
1196 } else if (cnt
== 0 && rv
== 0) {
1197 fprintf(stderr
, Name
": No arrays found in config file\n");
1203 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1204 if (write_behind
&& !bitmap_file
) {
1205 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1209 if (raiddisks
== 0) {
1210 fprintf(stderr
, Name
": no raid-devices specified.\n");
1216 if (strcmp(bitmap_file
, "internal")==0) {
1217 fprintf(stderr
, Name
": 'internal' bitmaps not supported with --build\n");
1222 rv
= Build(devlist
->devname
, chunk
, level
, layout
,
1223 raiddisks
, devlist
->next
, assume_clean
,
1224 bitmap_file
, bitmap_chunk
, write_behind
,
1225 delay
, verbose
-quiet
, autof
, size
);
1228 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1229 if (write_behind
&& !bitmap_file
) {
1230 fprintf(stderr
, Name
": write-behind mode requires a bitmap.\n");
1234 if (raiddisks
== 0) {
1235 fprintf(stderr
, Name
": no raid-devices specified.\n");
1240 rv
= Create(ss
, devlist
->devname
, chunk
, level
, layout
, size
<0 ? 0 : size
,
1241 raiddisks
, sparedisks
, ident
.name
, homehost
,
1242 ident
.uuid_set
? ident
.uuid
: NULL
,
1243 devs_found
-1, devlist
->next
, runstop
, verbose
-quiet
, force
, assume_clean
,
1244 bitmap_file
, bitmap_chunk
, write_behind
, delay
, autof
);
1247 if (devmode
== 'E') {
1248 if (devlist
== NULL
&& !scan
) {
1249 fprintf(stderr
, Name
": No devices to examine\n");
1252 if (devlist
== NULL
)
1253 devlist
= conf_get_devs();
1254 if (devlist
== NULL
) {
1255 fprintf(stderr
, Name
": No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1258 if (brief
&& verbose
)
1260 rv
= Examine(devlist
, scan
?(verbose
>1?0:verbose
+1):brief
,
1262 SparcAdjust
, ss
, homehost
);
1263 } else if (devmode
== DetailPlatform
) {
1264 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? scan
: 1, verbose
);
1266 if (devlist
== NULL
) {
1267 if ((devmode
=='D' || devmode
== Waitclean
) && scan
) {
1268 /* apply --detail or --wait-clean to
1269 * all devices in /proc/mdstat
1271 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1272 struct mdstat_ent
*e
;
1273 struct map_ent
*map
= NULL
;
1274 int v
= verbose
>1?0:verbose
+1;
1276 for (e
=ms
; e
; e
=e
->next
) {
1279 me
= map_by_devnum(&map
, e
->devnum
);
1281 && strcmp(me
->path
, "/unknown") != 0)
1284 name
= get_md_name(e
->devnum
);
1287 fprintf(stderr
, Name
": cannot find device file for %s\n",
1292 rv
|= Detail(name
, v
,
1296 rv
|= WaitClean(name
, v
);
1300 } else if (devmode
== 'S' && scan
) {
1301 /* apply --stop to all devices in /proc/mdstat */
1302 /* Due to possible stacking of devices, repeat until
1303 * nothing more can be stopped
1305 int progress
=1, err
;
1308 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1309 struct mdstat_ent
*e
;
1311 if (!progress
) last
= 1;
1312 progress
= 0; err
= 0;
1313 for (e
=ms
; e
; e
=e
->next
) {
1314 char *name
= get_md_name(e
->devnum
);
1317 fprintf(stderr
, Name
": cannot find device file for %s\n",
1321 mdfd
= open_mddev(name
, 1);
1323 if (Manage_runstop(name
, mdfd
, -1, quiet
?1:last
?0:-1))
1333 } while (!last
&& err
);
1336 fprintf(stderr
, Name
": No devices given.\n");
1340 for (dv
=devlist
; dv
; dv
=dv
->next
) {
1341 switch(dv
->disposition
) {
1343 rv
|= Detail(dv
->devname
,
1345 export
, test
, homehost
);
1347 case 'K': /* Zero superblock */
1348 rv
|= Kill(dv
->devname
, force
, quiet
,0);
1351 rv
|= Query(dv
->devname
); continue;
1353 rv
|= ExamineBitmap(dv
->devname
, brief
, ss
); continue;
1355 rv
|= Wait(dv
->devname
); continue;
1357 rv
|= WaitClean(dv
->devname
, verbose
-quiet
); continue;
1359 mdfd
= open_mddev(dv
->devname
, 1);
1361 switch(dv
->disposition
) {
1363 rv
|= Manage_runstop(dv
->devname
, mdfd
, 1, quiet
); break;
1365 rv
|= Manage_runstop(dv
->devname
, mdfd
, -1, quiet
); break;
1367 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1369 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;
1378 if (!devlist
&& !scan
) {
1379 fprintf(stderr
, Name
": Cannot monitor: need --scan or at least one device\n");
1383 if (pidfile
&& !daemonise
) {
1384 fprintf(stderr
, Name
": Cannot write a pid file when not in daemon mode\n");
1388 rv
= Monitor(devlist
, mailaddr
, program
,
1389 delay
?delay
:60, daemonise
, scan
, oneshot
,
1390 dosyslog
, test
, pidfile
);
1394 if (array_size
>= 0) {
1395 /* alway impose array size first, independent of
1400 sysfs_init(&sra
, mdfd
, 0);
1401 if (array_size
== 0)
1402 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1404 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1407 fprintf(stderr
, Name
": --array-size setting"
1408 " is too large.\n");
1410 fprintf(stderr
, Name
": current kernel does"
1411 " not support setting --array-size\n");
1416 if (devs_found
> 1) {
1419 if (size
>= 0 || raiddisks
) {
1420 fprintf(stderr
, Name
": --size, --raiddisks, and --add are exclusing in --grow mode\n");
1424 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1425 rv
= Grow_Add_device(devlist
->devname
, mdfd
, dv
->devname
);
1429 } else if ((size
>= 0) + (raiddisks
!= 0) + (layout
!= UnSet
) + (bitmap_file
!= NULL
)> 1) {
1430 fprintf(stderr
, Name
": can change at most one of size, raiddisks, bitmap, and layout\n");
1433 } else if (layout
!= UnSet
)
1434 rv
= Manage_reconfig(devlist
->devname
, mdfd
, layout
);
1435 else if (size
>= 0 || raiddisks
)
1436 rv
= Grow_reshape(devlist
->devname
, mdfd
, quiet
, backup_file
,
1437 size
, level
, layout
, chunk
, raiddisks
);
1438 else if (bitmap_file
) {
1439 if (delay
== 0) delay
= DEFAULT_BITMAP_DELAY
;
1440 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, bitmap_file
,
1441 bitmap_chunk
, delay
, write_behind
, force
);
1442 } else if (array_size
< 0)
1443 fprintf(stderr
, Name
": no changes to --grow\n");
1451 fprintf(stderr
, Name
1452 ": --incremental --scan meaningless without --run.\n");
1455 rv
= IncrementalScan(verbose
);
1458 if (!rebuild_map
&& !scan
) {
1459 fprintf(stderr
, Name
1460 ": --incremental requires a device.\n");
1465 if (devlist
->next
) {
1466 fprintf(stderr
, Name
1467 ": --incremental can only handle one device.\n");
1471 rv
= Incremental(devlist
->devname
, verbose
-quiet
, runstop
,
1472 ss
, homehost
, require_homehost
, autof
);