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
;
119 while ((option_index
= -1) ,
120 (opt
=getopt_long(argc
, argv
,
121 shortopt
, long_options
,
122 &option_index
)) != -1) {
124 /* firstly, some mode-independent options */
134 fputs(Version
, stderr
);
137 case 'v': c
.verbose
++;
140 case 'q': c
.verbose
--;
144 if (mode
== ASSEMBLE
|| mode
== BUILD
|| mode
== CREATE
145 || mode
== GROW
|| mode
== INCREMENTAL
147 break; /* b means bitmap */
152 case 'Y': c
.export
++;
156 if (strcasecmp(optarg
, "<ignore>") == 0)
157 c
.require_homehost
= 0;
163 /* Silently ignore old option */
169 if (asprintf(&c
.prefer
, "/%s/", optarg
) <= 0)
175 fputs(Usage
, stderr
);
178 /* second, figure out the mode.
179 * Some options force the mode. Others
180 * set the mode if it isn't already
186 shortopt
= short_bitmap_options
;
196 case ReAdd
: /* re-add */
199 shortopt
= short_bitmap_options
;
203 case 'A': newmode
= ASSEMBLE
;
204 shortopt
= short_bitmap_auto_options
;
206 case 'B': newmode
= BUILD
;
207 shortopt
= short_bitmap_auto_options
;
209 case 'C': newmode
= CREATE
;
210 shortopt
= short_bitmap_auto_options
;
212 case 'F': newmode
= MONITOR
;
214 case 'G': newmode
= GROW
;
215 shortopt
= short_bitmap_options
;
217 case 'I': newmode
= INCREMENTAL
;
218 shortopt
= short_bitmap_auto_options
;
221 newmode
= AUTODETECT
;
255 if (mode
&& newmode
== mode
) {
256 /* everybody happy ! */
257 } else if (mode
&& newmode
!= mode
) {
260 if (option_index
>= 0)
261 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
263 fprintf(stderr
, "-%c", opt
);
264 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
265 map_num(modes
, newmode
),
266 map_num(modes
, mode
));
268 } else if (!mode
&& newmode
) {
270 if (mode
== MISC
&& devs_found
) {
271 pr_err("No action given for %s in --misc mode\n",
273 cont_err("Action options must come before device names\n");
277 /* special case of -c --help */
278 if ((opt
== 'c' || opt
== ConfigFile
) &&
279 ( strncmp(optarg
, "--h", 3)==0 ||
280 strncmp(optarg
, "-h", 2)==0)) {
281 fputs(Help_config
, stdout
);
285 /* If first option is a device, don't force the mode yet */
287 if (devs_found
== 0) {
288 dv
= xmalloc(sizeof(*dv
));
289 dv
->devname
= optarg
;
290 dv
->disposition
= devmode
;
291 dv
->writemostly
= writemostly
;
295 devlistend
= &dv
->next
;
300 /* No mode yet, and this is the second device ... */
301 pr_err("An option must be given to set the mode before a second device\n"
302 " (%s) is listed\n", optarg
);
305 if (option_index
>= 0)
306 pr_err("--%s", long_options
[option_index
].name
);
309 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
313 /* if we just set the mode, then done */
327 /* an undecorated option - must be a device name.
330 if (devs_found
> 0 && devmode
== DetailPlatform
) {
331 pr_err("controller may only be specified once. %s ignored\n",
336 if (devs_found
> 0 && mode
== MANAGE
&& !devmode
) {
337 pr_err("Must give one of -a/-r/-f"
338 " for subsequent devices at %s\n", optarg
);
341 if (devs_found
> 0 && mode
== GROW
&& !devmode
) {
342 pr_err("Must give -a/--add for"
343 " devices to add: %s\n", optarg
);
346 dv
= xmalloc(sizeof(*dv
));
347 dv
->devname
= optarg
;
348 dv
->disposition
= devmode
;
349 dv
->writemostly
= writemostly
;
353 devlistend
= &dv
->next
;
359 /* We've got a mode, and opt is now something else which
360 * could depend on the mode */
361 #define O(a,b) ((a<<16)|b)
362 switch (O(mode
,opt
)) {
364 case O(GROW
,ChunkSize
):
366 case O(CREATE
,ChunkSize
):
367 case O(BUILD
,'c'): /* chunk or rounding */
368 case O(BUILD
,ChunkSize
): /* chunk or rounding */
370 pr_err("chunk/rounding may only be specified once. "
371 "Second value is %s.\n", optarg
);
374 s
.chunk
= parse_size(optarg
);
375 if (s
.chunk
== INVALID_SECTORS
||
376 s
.chunk
< 8 || (s
.chunk
&1)) {
377 pr_err("invalid chunk/rounding value: %s\n",
381 /* Convert sectors to K */
385 case O(INCREMENTAL
, 'e'):
387 case O(ASSEMBLE
,'e'):
388 case O(MISC
,'e'): /* set metadata (superblock) information */
390 pr_err("metadata information already given\n");
393 for(i
=0; !ss
&& superlist
[i
]; i
++)
394 ss
= superlist
[i
]->match_metadata_desc(optarg
);
397 pr_err("unrecognised metadata identifier: %s\n", optarg
);
403 case O(MANAGE
,WriteMostly
):
405 case O(BUILD
,WriteMostly
):
407 case O(CREATE
,WriteMostly
):
408 /* set write-mostly for following devices */
413 /* clear write-mostly for following devices */
419 case O(BUILD
,'z'): /* size */
421 pr_err("size may only be specified once. "
422 "Second value is %s.\n", optarg
);
425 if (strcmp(optarg
, "max")==0)
428 s
.size
= parse_size(optarg
);
429 if (s
.size
== INVALID_SECTORS
||
431 pr_err("invalid size: %s\n",
435 /* convert sectors to K */
440 case O(GROW
,'Z'): /* array size */
441 if (array_size
> 0) {
442 pr_err("array-size may only be specified once. "
443 "Second value is %s.\n", optarg
);
446 if (strcmp(optarg
, "max") == 0)
447 array_size
= MAX_SIZE
;
449 array_size
= parse_size(optarg
);
450 if (array_size
== 0 ||
451 array_size
== INVALID_SECTORS
) {
452 pr_err("invalid array size: %s\n",
459 case O(CREATE
,DataOffset
):
460 case O(GROW
,DataOffset
):
461 if (data_offset
!= INVALID_SECTORS
) {
462 pr_err("data-offset may only be specified one. "
463 "Second value is %s.\n", optarg
);
466 if (mode
== CREATE
&&
467 strcmp(optarg
, "variable") == 0)
468 data_offset
= VARIABLE_OFFSET
;
470 data_offset
= parse_size(optarg
);
471 if (data_offset
== INVALID_SECTORS
) {
472 pr_err("invalid data-offset: %s\n",
480 case O(BUILD
,'l'): /* set raid level*/
481 if (s
.level
!= UnSet
) {
482 pr_err("raid level may only be set once. "
483 "Second value is %s.\n", optarg
);
486 s
.level
= map_name(pers
, optarg
);
487 if (s
.level
== UnSet
) {
488 pr_err("invalid raid level: %s\n",
492 if (s
.level
!= 0 && s
.level
!= LEVEL_LINEAR
&& s
.level
!= 1 &&
493 s
.level
!= LEVEL_MULTIPATH
&& s
.level
!= LEVEL_FAULTY
&&
496 pr_err("Raid level %s not permitted with --build.\n",
500 if (s
.sparedisks
> 0 && s
.level
< 1 && s
.level
>= -1) {
501 pr_err("raid level %s is incompatible with spare-devices setting.\n",
505 ident
.level
= s
.level
;
508 case O(GROW
, 'p'): /* new layout */
509 case O(GROW
, Layout
):
511 pr_err("layout may only be sent once. "
512 "Second value was %s\n", optarg
);
515 s
.layout_str
= optarg
;
516 /* 'Grow' will parse the value */
519 case O(CREATE
,'p'): /* raid5 layout */
520 case O(CREATE
,Layout
):
521 case O(BUILD
,'p'): /* faulty layout */
522 case O(BUILD
,Layout
):
523 if (s
.layout
!= UnSet
) {
524 pr_err("layout may only be sent once. "
525 "Second value was %s\n", optarg
);
530 pr_err("layout not meaningful for %s arrays.\n",
531 map_num(pers
, s
.level
));
534 pr_err("raid level must be given before layout.\n");
538 s
.layout
= map_name(r5layout
, optarg
);
539 if (s
.layout
==UnSet
) {
540 pr_err("layout %s not understood for raid5.\n",
546 s
.layout
= map_name(r6layout
, optarg
);
547 if (s
.layout
==UnSet
) {
548 pr_err("layout %s not understood for raid6.\n",
555 s
.layout
= parse_layout_10(optarg
);
557 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
565 s
.layout
= parse_layout_faulty(optarg
);
566 if (s
.layout
== -1) {
567 pr_err("layout %s not understood for faulty.\n",
575 case O(CREATE
,AssumeClean
):
576 case O(BUILD
,AssumeClean
): /* assume clean */
577 case O(GROW
,AssumeClean
):
583 case O(BUILD
,'n'): /* number of raid disks */
585 pr_err("raid-devices set twice: %d and %s\n",
586 s
.raiddisks
, optarg
);
589 s
.raiddisks
= parse_num(optarg
);
590 if (s
.raiddisks
<= 0) {
591 pr_err("invalid number of raid devices: %s\n",
595 ident
.raid_disks
= s
.raiddisks
;
598 case O(CREATE
,'x'): /* number of spare (eXtra) disks */
600 pr_err("spare-devices set twice: %d and %s\n",
601 s
.sparedisks
, optarg
);
604 if (s
.level
!= UnSet
&& s
.level
<= 0 && s
.level
>= -1) {
605 pr_err("spare-devices setting is incompatible with raid level %d\n",
609 s
.sparedisks
= parse_num(optarg
);
610 if (s
.sparedisks
< 0) {
611 pr_err("invalid number of spare-devices: %s\n",
621 case O(INCREMENTAL
,'a'):
622 case O(INCREMENTAL
,Auto
):
623 case O(ASSEMBLE
,'a'):
624 case O(ASSEMBLE
,Auto
): /* auto-creation of device node */
625 c
.autof
= parse_auto(optarg
, "--auto flag", 0);
628 case O(CREATE
,Symlinks
):
629 case O(BUILD
,Symlinks
):
630 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
634 case O(BUILD
,'f'): /* force honouring '-n 1' */
635 case O(BUILD
,Force
): /* force honouring '-n 1' */
636 case O(GROW
,'f'): /* ditto */
637 case O(GROW
,Force
): /* ditto */
638 case O(CREATE
,'f'): /* force honouring of device list */
639 case O(CREATE
,Force
): /* force honouring of device list */
640 case O(ASSEMBLE
,'f'): /* force assembly */
641 case O(ASSEMBLE
,Force
): /* force assembly */
642 case O(MISC
,'f'): /* force zero */
643 case O(MISC
,Force
): /* force zero */
644 case O(MANAGE
,Force
): /* add device which is too large */
647 /* now for the Assemble options */
648 case O(ASSEMBLE
, FreezeReshape
): /* Freeze reshape during
650 case O(INCREMENTAL
, FreezeReshape
):
651 c
.freeze_reshape
= 1;
653 case O(CREATE
,'u'): /* uuid of array */
654 case O(ASSEMBLE
,'u'): /* uuid of array */
655 if (ident
.uuid_set
) {
656 pr_err("uuid cannot be set twice. "
657 "Second value %s.\n", optarg
);
660 if (parse_uuid(optarg
, ident
.uuid
))
663 pr_err("Bad uuid: %s\n", optarg
);
669 case O(ASSEMBLE
,'N'):
672 pr_err("name cannot be set twice. "
673 "Second value %s.\n", optarg
);
676 if (mode
== MISC
&& !c
.subarray
) {
677 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
680 if (strlen(optarg
) > 32) {
681 pr_err("name '%s' is too long, 32 chars max.\n",
685 strcpy(ident
.name
, optarg
);
688 case O(ASSEMBLE
,'m'): /* super-minor for array */
689 case O(ASSEMBLE
,SuperMinor
):
690 if (ident
.super_minor
!= UnSet
) {
691 pr_err("super-minor cannot be set twice. "
692 "Second value: %s.\n", optarg
);
695 if (strcmp(optarg
, "dev")==0)
696 ident
.super_minor
= -2;
698 ident
.super_minor
= parse_num(optarg
);
699 if (ident
.super_minor
< 0) {
700 pr_err("Bad super-minor number: %s.\n", optarg
);
706 case O(ASSEMBLE
,'o'):
712 case O(ASSEMBLE
,'U'): /* update the superblock */
715 pr_err("Can only update one aspect"
716 " of superblock, both %s and %s given.\n",
720 if (mode
== MISC
&& !c
.subarray
) {
721 pr_err("Only subarrays can be"
722 " updated in misc mode\n");
726 if (strcmp(c
.update
, "sparc2.2")==0)
728 if (strcmp(c
.update
, "super-minor") == 0)
730 if (strcmp(c
.update
, "summaries")==0)
732 if (strcmp(c
.update
, "resync")==0)
734 if (strcmp(c
.update
, "uuid")==0)
736 if (strcmp(c
.update
, "name")==0)
738 if (strcmp(c
.update
, "homehost")==0)
740 if (strcmp(c
.update
, "devicesize")==0)
742 if (strcmp(c
.update
, "no-bitmap")==0)
744 if (strcmp(c
.update
, "bbl") == 0)
746 if (strcmp(c
.update
, "no-bbl") == 0)
748 if (strcmp(c
.update
, "metadata") == 0)
750 if (strcmp(c
.update
, "revert-reshape") == 0)
752 if (strcmp(c
.update
, "byteorder")==0) {
754 pr_err("must not set metadata"
755 " type with --update=byteorder.\n");
758 for(i
=0; !ss
&& superlist
[i
]; i
++)
759 ss
= superlist
[i
]->match_metadata_desc(
762 pr_err("INTERNAL ERROR"
763 " cannot find 0.swap\n");
769 if (strcmp(c
.update
,"?") == 0 ||
770 strcmp(c
.update
, "help") == 0) {
772 fprintf(outf
, Name
": ");
776 Name
": '--update=%s' is invalid. ",
779 fprintf(outf
, "Valid --update options are:\n"
780 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'resync',\n"
781 " 'summaries', 'homehost', 'byteorder', 'devicesize',\n"
782 " 'no-bitmap', 'metadata', 'revert-reshape'\n");
783 exit(outf
== stdout
? 0 : 2);
786 /* update=devicesize is allowed with --re-add */
787 if (devmode
!= 'A') {
788 pr_err("--update in Manage mode only"
789 " allowed with --re-add.\n");
793 pr_err("Can only update one aspect"
794 " of superblock, both %s and %s given.\n",
799 if (strcmp(c
.update
, "devicesize") != 0 &&
800 strcmp(c
.update
, "bbl") != 0 &&
801 strcmp(c
.update
, "no-bbl") != 0) {
802 pr_err("only 'devicesize', 'bbl' and 'no-bbl' can be"
803 " updated with --re-add\n");
808 case O(INCREMENTAL
,NoDegraded
):
809 pr_err("--no-degraded is deprecated in Incremental mode\n");
810 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
811 c
.runstop
= -1; /* --stop isn't allowed for --assemble,
812 * so we overload slightly */
815 case O(ASSEMBLE
,'c'):
816 case O(ASSEMBLE
,ConfigFile
):
817 case O(INCREMENTAL
, 'c'):
818 case O(INCREMENTAL
, ConfigFile
):
820 case O(MISC
, ConfigFile
):
822 case O(MONITOR
,ConfigFile
):
823 case O(CREATE
,ConfigFile
):
825 pr_err("configfile cannot be set twice. "
826 "Second value is %s.\n", optarg
);
830 set_conffile(configfile
);
831 /* FIXME possibly check that config file exists. Even parse it */
833 case O(ASSEMBLE
,'s'): /* scan */
836 case O(INCREMENTAL
,'s'):
840 case O(MONITOR
,'m'): /* mail address */
841 case O(MONITOR
,EMail
):
843 pr_err("only specify one mailaddress. %s ignored.\n",
849 case O(MONITOR
,'p'): /* alert program */
850 case O(MONITOR
,ProgramOpt
): /* alert program */
852 pr_err("only specify one alter program. %s ignored.\n",
858 case O(MONITOR
,'r'): /* rebuild increments */
859 case O(MONITOR
,Increment
):
860 increments
= atoi(optarg
);
861 if (increments
> 99 || increments
< 1) {
862 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
867 case O(MONITOR
,'d'): /* delay in seconds */
869 case O(BUILD
,'d'): /* delay for bitmap updates */
872 pr_err("only specify delay once. %s ignored.\n",
875 c
.delay
= parse_num(optarg
);
877 pr_err("invalid delay: %s\n",
883 case O(MONITOR
,'f'): /* daemonise */
884 case O(MONITOR
,Fork
):
887 case O(MONITOR
,'i'): /* pid */
889 pr_err("only specify one pid file. %s ignored.\n",
894 case O(MONITOR
,'1'): /* oneshot */
898 case O(MONITOR
,'t'): /* test */
901 case O(MONITOR
,'y'): /* log messages to syslog */
902 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
905 case O(MONITOR
, NoSharing
):
909 /* now the general management options. Some are applicable
910 * to other modes. None have arguments.
915 case O(MANAGE
,Add
): /* add a drive */
918 case O(MANAGE
,ReAdd
):
921 case O(MANAGE
,'r'): /* remove a drive */
922 case O(MANAGE
,Remove
):
925 case O(MANAGE
,'f'): /* set faulty */
927 case O(INCREMENTAL
,'f'):
928 case O(INCREMENTAL
,Remove
):
929 case O(INCREMENTAL
,Fail
): /* r for incremental is taken, use f
930 * even though we will both fail and
931 * remove the device */
934 case O(MANAGE
,Replace
):
935 /* Mark these devices for replacement */
939 /* These are the replacements to use */
940 if (devmode
!= 'R') {
941 pr_err("--with must follow --replace\n");
946 case O(INCREMENTAL
,'R'):
948 case O(ASSEMBLE
,'R'):
950 case O(CREATE
,'R'): /* Run the array */
952 pr_err("Cannot both Stop and Run an array\n");
959 pr_err("Cannot both Run and Stop an array\n");
971 case O(MISC
,KillOpt
):
975 case O(MISC
, ExamineBB
):
979 case O(MISC
, WaitOpt
):
980 case O(MISC
, Waitclean
):
981 case O(MISC
, DetailPlatform
):
982 case O(MISC
, KillSubarray
):
983 case O(MISC
, UpdateSubarray
):
985 case O(MISC
, Restore
):
986 if (opt
== KillSubarray
|| opt
== UpdateSubarray
) {
988 pr_err("subarray can only"
989 " be specified once\n");
994 if (devmode
&& devmode
!= opt
&&
995 (devmode
== 'E' || (opt
== 'E' && devmode
!= 'Q'))) {
996 pr_err("--examine/-E cannot be given with ");
997 if (devmode
== 'E') {
998 if (option_index
>= 0)
999 fprintf(stderr
, "--%s\n",
1000 long_options
[option_index
].name
);
1002 fprintf(stderr
, "-%c\n", opt
);
1003 } else if (isalpha(devmode
))
1004 fprintf(stderr
, "-%c\n", devmode
);
1006 fprintf(stderr
, "previous option\n");
1010 if (opt
== Dump
|| opt
== Restore
) {
1011 if (dump_directory
!= NULL
) {
1012 pr_err("dump/restore directory specified twice: %s and %s\n",
1013 dump_directory
, optarg
);
1016 dump_directory
= optarg
;
1019 case O(MISC
, UdevRules
):
1020 if (devmode
&& devmode
!= opt
) {
1021 pr_err("--udev-rules must"
1022 " be the only option.\n");
1025 pr_err("only specify one udev "
1026 "rule filename. %s ignored.\n",
1029 udev_filename
= optarg
;
1037 case O(MISC
, Sparc22
):
1038 if (devmode
!= 'E') {
1039 pr_err("--sparc2.2 only allowed with --examine\n");
1045 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
1046 case O(ASSEMBLE
,Bitmap
):
1048 pr_err("bitmap file needed with -b in --assemble mode\n");
1051 if (strcmp(optarg
, "internal")==0) {
1052 pr_err("there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
1055 bitmap_fd
= open(optarg
, O_RDWR
);
1056 if (!*optarg
|| bitmap_fd
< 0) {
1057 pr_err("cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
1060 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
1063 case O(ASSEMBLE
, BackupFile
):
1064 case O(GROW
, BackupFile
):
1065 /* Specify a file into which grow might place a backup,
1066 * or from which assemble might recover a backup
1068 if (c
.backup_file
) {
1069 pr_err("backup file already specified, rejecting %s\n", optarg
);
1072 c
.backup_file
= optarg
;
1075 case O(GROW
, Continue
):
1076 /* Continue interrupted grow
1080 case O(ASSEMBLE
, InvalidBackup
):
1081 /* Acknowledge that the backupfile is invalid, but ask
1082 * to continue anyway
1084 c
.invalid_backup
= 1;
1088 case O(BUILD
,Bitmap
):
1090 case O(CREATE
,Bitmap
): /* here we create the bitmap */
1092 case O(GROW
,Bitmap
):
1093 if (strcmp(optarg
, "internal")== 0 ||
1094 strcmp(optarg
, "none")== 0 ||
1095 strchr(optarg
, '/') != NULL
) {
1096 s
.bitmap_file
= optarg
;
1100 pr_err("bitmap file must contain a '/', or be 'internal', or 'none'\n"
1101 " not '%s'\n", optarg
);
1104 case O(GROW
,BitmapChunk
):
1105 case O(BUILD
,BitmapChunk
):
1106 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
1107 s
.bitmap_chunk
= parse_size(optarg
);
1108 if (s
.bitmap_chunk
== 0 ||
1109 s
.bitmap_chunk
== INVALID_SECTORS
||
1110 s
.bitmap_chunk
& (s
.bitmap_chunk
- 1)) {
1111 pr_err("invalid bitmap chunksize: %s\n",
1115 s
.bitmap_chunk
= s
.bitmap_chunk
* 512;
1118 case O(GROW
, WriteBehind
):
1119 case O(BUILD
, WriteBehind
):
1120 case O(CREATE
, WriteBehind
): /* write-behind mode */
1121 s
.write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
1123 s
.write_behind
= parse_num(optarg
);
1124 if (s
.write_behind
< 0 ||
1125 s
.write_behind
> 16383) {
1126 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
1132 case O(INCREMENTAL
, 'r'):
1133 case O(INCREMENTAL
, RebuildMapOpt
):
1136 case O(INCREMENTAL
, IncrementalPath
):
1137 remove_path
= optarg
;
1140 /* We have now processed all the valid options. Anything else is
1143 if (option_index
> 0)
1144 pr_err(":option --%s not valid in %s mode\n",
1145 long_options
[option_index
].name
,
1146 map_num(modes
, mode
));
1148 pr_err("option -%c not valid in %s mode\n",
1149 opt
, map_num(modes
, mode
));
1156 if (print_help
== 2)
1157 help_text
= OptionHelp
;
1159 help_text
= mode_help
[mode
];
1160 if (help_text
== NULL
)
1162 fputs(help_text
,stdout
);
1166 if (!mode
&& devs_found
) {
1169 if (devlist
->disposition
== 0)
1170 devlist
->disposition
= devmode
;
1173 fputs(Usage
, stderr
);
1178 struct createinfo
*ci
= conf_get_create_info();
1180 if (strcasecmp(symlinks
, "yes") == 0)
1182 else if (strcasecmp(symlinks
, "no") == 0)
1185 pr_err("option --symlinks must be 'no' or 'yes'\n");
1189 /* Ok, got the option parsing out of the way
1190 * hopefully it's mostly right but there might be some stuff
1193 * That is mosty checked in the per-mode stuff but...
1195 * For @,B,C and A without -s, the first device listed must be
1196 * an md device. We check that here and open it.
1199 if (mode
== MANAGE
|| mode
== BUILD
|| mode
== CREATE
1201 || (mode
== ASSEMBLE
&& ! c
.scan
)) {
1202 if (devs_found
< 1) {
1203 pr_err("an md device must be given in this mode\n");
1206 if ((int)ident
.super_minor
== -2 && c
.autof
) {
1207 pr_err("--super-minor=dev is incompatible with --auto\n");
1210 if (mode
== MANAGE
|| mode
== GROW
) {
1211 mdfd
= open_mddev(devlist
->devname
, 1);
1215 /* non-existent device is OK */
1216 mdfd
= open_mddev(devlist
->devname
, 0);
1218 pr_err("device %s exists but is not an "
1219 "md array.\n", devlist
->devname
);
1222 if ((int)ident
.super_minor
== -2) {
1225 pr_err("--super-minor=dev given, and "
1226 "listed device %s doesn't exist.\n",
1231 ident
.super_minor
= minor(stb
.st_rdev
);
1233 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1234 /* We don't really want this open yet, we just might
1235 * have wanted to check some things
1243 if (s
.raiddisks
== 1 && !c
.force
&& s
.level
!= LEVEL_FAULTY
) {
1244 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1245 " a mistake. If you really mean it you will need to specify --force before\n"
1246 " setting the number of drives.\n");
1251 if (c
.homehost
== NULL
)
1252 c
.homehost
= conf_get_homehost(&c
.require_homehost
);
1253 if (c
.homehost
== NULL
|| strcasecmp(c
.homehost
, "<system>")==0) {
1254 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1255 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1256 c
.homehost
= sys_hostname
;
1259 if (c
.homehost
&& (!c
.homehost
[0] || strcasecmp(c
.homehost
, "<none>") == 0)) {
1261 c
.require_homehost
= 0;
1264 if (c
.backup_file
&& data_offset
!= INVALID_SECTORS
) {
1265 pr_err("--backup-file and --data-offset are incompatible\n");
1269 if ((mode
== MISC
&& devmode
== 'E')
1270 || (mode
== MONITOR
&& spare_sharing
== 0))
1271 /* Anyone may try this */;
1272 else if (geteuid() != 0) {
1273 pr_err("must be super-user to perform this action\n");
1277 ident
.autof
= c
.autof
;
1279 if (c
.scan
&& c
.verbose
< 2)
1280 /* --scan implied --brief unless -vv */
1286 /* readonly, add/remove, readwrite, runstop */
1288 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1289 if (!rv
&& devs_found
>1)
1290 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1291 devlist
->next
, c
.verbose
, c
.test
,
1293 if (!rv
&& c
.readonly
< 0)
1294 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1295 if (!rv
&& c
.runstop
> 0)
1296 rv
= Manage_run(devlist
->devname
, mdfd
, c
.verbose
);
1297 if (!rv
&& c
.runstop
< 0)
1298 rv
= Manage_stop(devlist
->devname
, mdfd
, c
.verbose
, 0);
1301 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1302 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 && !c
.scan
) {
1303 /* Only a device has been given, so get details from config file */
1304 struct mddev_ident
*array_ident
= conf_get_ident(devlist
->devname
);
1305 if (array_ident
== NULL
) {
1306 pr_err("%s not identified in config file.\n",
1312 if (array_ident
->autof
== 0)
1313 array_ident
->autof
= c
.autof
;
1314 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1318 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1320 else if (devs_found
> 0) {
1321 if (c
.update
&& devs_found
> 1) {
1322 pr_err("can only update a single array at a time\n");
1325 if (c
.backup_file
&& devs_found
> 1) {
1326 pr_err("can only assemble a single array when providing a backup file.\n");
1329 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1330 struct mddev_ident
*array_ident
= conf_get_ident(dv
->devname
);
1331 if (array_ident
== NULL
) {
1332 pr_err("%s not identified in config file.\n",
1337 if (array_ident
->autof
== 0)
1338 array_ident
->autof
= c
.autof
;
1339 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1344 pr_err("--update not meaningful with a --scan assembly.\n");
1347 if (c
.backup_file
) {
1348 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1351 rv
= scan_assemble(ss
, &c
, &ident
);
1357 c
.delay
= DEFAULT_BITMAP_DELAY
;
1358 if (s
.write_behind
&& !s
.bitmap_file
) {
1359 pr_err("write-behind mode requires a bitmap.\n");
1363 if (s
.raiddisks
== 0) {
1364 pr_err("no raid-devices specified.\n");
1369 if (s
.bitmap_file
) {
1370 if (strcmp(s
.bitmap_file
, "internal")==0) {
1371 pr_err("'internal' bitmaps not supported with --build\n");
1376 rv
= Build(devlist
->devname
, devlist
->next
, &s
, &c
);
1380 c
.delay
= DEFAULT_BITMAP_DELAY
;
1381 if (s
.write_behind
&& !s
.bitmap_file
) {
1382 pr_err("write-behind mode requires a bitmap.\n");
1386 if (s
.raiddisks
== 0) {
1387 pr_err("no raid-devices specified.\n");
1392 rv
= Create(ss
, devlist
->devname
,
1393 ident
.name
, ident
.uuid_set
? ident
.uuid
: NULL
,
1394 devs_found
-1, devlist
->next
,
1395 &s
, &c
, data_offset
);
1398 if (devmode
== 'E') {
1399 if (devlist
== NULL
&& !c
.scan
) {
1400 pr_err("No devices to examine\n");
1403 if (devlist
== NULL
)
1404 devlist
= conf_get_devs();
1405 if (devlist
== NULL
) {
1406 pr_err("No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1409 rv
= Examine(devlist
, &c
, ss
);
1410 } else if (devmode
== DetailPlatform
) {
1411 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? c
.scan
: 1,
1412 c
.verbose
, c
.export
,
1413 devlist
? devlist
->devname
: NULL
);
1414 } else if (devlist
== NULL
) {
1415 if (devmode
== 'S' && c
.scan
)
1416 rv
= stop_scan(c
.verbose
);
1417 else if ((devmode
== 'D' || devmode
== Waitclean
) && c
.scan
)
1418 rv
= misc_scan(devmode
, &c
);
1419 else if (devmode
== UdevRules
)
1420 rv
= Write_rules(udev_filename
);
1422 pr_err("No devices given.\n");
1426 rv
= misc_list(devlist
, &ident
, dump_directory
, ss
, &c
);
1429 if (!devlist
&& !c
.scan
) {
1430 pr_err("Cannot monitor: need --scan or at least one device\n");
1434 if (pidfile
&& !daemonise
) {
1435 pr_err("Cannot write a pid file when not in daemon mode\n");
1440 if (get_linux_version() > 2006016)
1441 /* mdstat responds to poll */
1448 rv
= Monitor(devlist
, mailaddr
, program
,
1449 &c
, daemonise
, oneshot
,
1450 dosyslog
, pidfile
, increments
,
1455 if (array_size
> 0) {
1456 /* alway impose array size first, independent of
1458 * Do not allow level or raid_disks changes at the
1459 * same time as that can be irreversibly destructive.
1463 if (s
.raiddisks
|| s
.level
!= UnSet
) {
1464 pr_err("cannot change array size in same operation "
1465 "as changing raiddisks or level.\n"
1466 " Change size first, then check that data is still intact.\n");
1470 sysfs_init(&sra
, mdfd
, NULL
);
1471 if (array_size
== MAX_SIZE
)
1472 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1474 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1477 pr_err("--array-size setting"
1478 " is too large.\n");
1480 pr_err("current kernel does"
1481 " not support setting --array-size\n");
1486 if (devs_found
> 1 && s
.raiddisks
== 0 && s
.level
== UnSet
) {
1488 if (s
.size
> 0 || s
.chunk
|| s
.layout_str
!= NULL
|| s
.bitmap_file
) {
1489 pr_err("--add cannot be used with "
1490 "other geometry changes in --grow mode\n");
1494 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1495 rv
= Grow_Add_device(devlist
->devname
, mdfd
,
1500 } else if (s
.bitmap_file
) {
1501 if (s
.size
> 0 || s
.raiddisks
|| s
.chunk
||
1502 s
.layout_str
!= NULL
|| devs_found
> 1) {
1503 pr_err("--bitmap changes cannot be "
1504 "used with other geometry changes "
1505 "in --grow mode\n");
1510 c
.delay
= DEFAULT_BITMAP_DELAY
;
1511 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, &c
, &s
);
1512 } else if (grow_continue
)
1513 rv
= Grow_continue_command(devlist
->devname
,
1514 mdfd
, c
.backup_file
,
1516 else if (s
.size
> 0 || s
.raiddisks
|| s
.layout_str
!= NULL
1517 || s
.chunk
!= 0 || s
.level
!= UnSet
1518 || data_offset
!= INVALID_SECTORS
) {
1519 rv
= Grow_reshape(devlist
->devname
, mdfd
,
1521 data_offset
, &c
, &s
);
1522 } else if (array_size
== 0)
1523 pr_err("no changes to --grow\n");
1530 if (c
.runstop
<= 0) {
1531 pr_err("--incremental --scan meaningless without --run.\n");
1534 if (devmode
== 'f') {
1535 pr_err("--incremental --scan --fail not supported.\n");
1538 rv
= IncrementalScan(c
.verbose
, NULL
);
1541 if (!rebuild_map
&& !c
.scan
) {
1542 pr_err("--incremental requires a device.\n");
1547 if (devlist
->next
) {
1548 pr_err("--incremental can only handle one device.\n");
1553 rv
= IncrementalRemove(devlist
->devname
, remove_path
,
1556 rv
= Incremental(devlist
->devname
, &c
, ss
);
1565 static int scan_assemble(struct supertype
*ss
,
1567 struct mddev_ident
*ident
)
1569 struct mddev_ident
*a
, *array_list
= conf_get_ident(NULL
);
1570 struct mddev_dev
*devlist
= conf_get_devs();
1571 struct map_ent
*map
= NULL
;
1574 int failures
, successes
;
1576 if (conf_verify_devnames(array_list
)) {
1577 pr_err("Duplicate MD device names in "
1578 "conf file were found.\n");
1581 if (devlist
== NULL
) {
1582 pr_err("No devices listed in conf file were found.\n");
1585 for (a
= array_list
; a
; a
= a
->next
) {
1588 a
->autof
= c
->autof
;
1591 pr_err("%s: failed to get "
1592 "exclusive lock on mapfile\n",
1598 for (a
= array_list
; a
; a
= a
->next
) {
1603 strcasecmp(a
->devname
, "<ignore>") == 0)
1606 r
= Assemble(ss
, a
->devname
,
1616 } while (failures
&& successes
);
1617 if (c
->homehost
&& cnt
== 0) {
1618 /* Maybe we can auto-assemble something.
1619 * Repeatedly call Assemble in auto-assemble mode
1624 ident
->autof
= c
->autof
;
1626 struct mddev_dev
*devlist
= conf_get_devs();
1629 rv2
= Assemble(ss
, NULL
,
1637 /* Incase there are stacked devices, we need to go around again */
1639 if (cnt
== 0 && rv
== 0) {
1640 pr_err("No arrays found in config file or automatically\n");
1644 } else if (cnt
== 0 && rv
== 0) {
1645 pr_err("No arrays found in config file\n");
1652 static int misc_scan(char devmode
, struct context
*c
)
1654 /* apply --detail or --wait-clean to
1655 * all devices in /proc/mdstat
1657 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1658 struct mdstat_ent
*e
;
1659 struct map_ent
*map
= NULL
;
1663 for (members
= 0; members
<= 1; members
++) {
1664 for (e
=ms
; e
; e
=e
->next
) {
1668 int member
= e
->metadata_version
&&
1669 strncmp(e
->metadata_version
,
1670 "external:/", 10) == 0;
1671 if (members
!= member
)
1673 me
= map_by_devnm(&map
, e
->devnm
);
1675 && strcmp(me
->path
, "/unknown") != 0)
1678 stat(name
, &stb
) != 0)
1679 name
= get_md_name(e
->devnm
);
1682 pr_err("cannot find device file for %s\n",
1687 rv
|= Detail(name
, c
);
1689 rv
|= WaitClean(name
, -1, c
->verbose
);
1697 static int stop_scan(int verbose
)
1699 /* apply --stop to all devices in /proc/mdstat */
1700 /* Due to possible stacking of devices, repeat until
1701 * nothing more can be stopped
1703 int progress
=1, err
;
1707 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1708 struct mdstat_ent
*e
;
1710 if (!progress
) last
= 1;
1711 progress
= 0; err
= 0;
1712 for (e
=ms
; e
; e
=e
->next
) {
1713 char *name
= get_md_name(e
->devnm
);
1717 pr_err("cannot find device file for %s\n",
1721 mdfd
= open_mddev(name
, 1);
1723 if (Manage_stop(name
, mdfd
, verbose
, !last
))
1733 } while (!last
&& err
);
1739 static int misc_list(struct mddev_dev
*devlist
,
1740 struct mddev_ident
*ident
,
1741 char *dump_directory
,
1742 struct supertype
*ss
, struct context
*c
)
1744 struct mddev_dev
*dv
;
1747 for (dv
=devlist
; dv
; dv
=(rv
& 16) ? NULL
: dv
->next
) {
1750 switch(dv
->disposition
) {
1752 rv
|= Detail(dv
->devname
, c
);
1754 case KillOpt
: /* Zero superblock */
1756 rv
|= Kill(dv
->devname
, ss
, c
->force
, c
->verbose
,0);
1760 rv
|= Kill(dv
->devname
, NULL
, c
->force
, v
, 0);
1767 rv
|= Query(dv
->devname
); continue;
1769 rv
|= ExamineBitmap(dv
->devname
, c
->brief
, ss
); continue;
1771 rv
|= ExamineBadblocks(dv
->devname
, c
->brief
, ss
); continue;
1774 rv
|= Wait(dv
->devname
); continue;
1776 rv
|= WaitClean(dv
->devname
, -1, c
->verbose
); continue;
1778 rv
|= Kill_subarray(dv
->devname
, c
->subarray
, c
->verbose
);
1780 case UpdateSubarray
:
1781 if (c
->update
== NULL
) {
1782 pr_err("-U/--update must be specified with --update-subarray\n");
1786 rv
|= Update_subarray(dv
->devname
, c
->subarray
,
1787 c
->update
, ident
, c
->verbose
);
1790 rv
|= Dump_metadata(dv
->devname
, dump_directory
, c
, ss
);
1793 rv
|= Restore_metadata(dv
->devname
, dump_directory
, c
, ss
,
1794 (dv
== devlist
&& dv
->next
== NULL
));
1797 if (dv
->devname
[0] == '/')
1798 mdfd
= open_mddev(dv
->devname
, 1);
1800 mdfd
= open_dev(dv
->devname
);
1802 pr_err("Cannot open %s\n", dv
->devname
);
1805 switch(dv
->disposition
) {
1807 rv
|= Manage_run(dv
->devname
, mdfd
, c
->verbose
); break;
1809 rv
|= Manage_stop(dv
->devname
, mdfd
, c
->verbose
, 0); break;
1811 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1813 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;