2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2013 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
);
41 const char Name
[] = "mdadm";
43 int main(int argc
, char *argv
[])
51 unsigned long long array_size
= 0;
52 unsigned long long data_offset
= INVALID_SECTORS
;
53 struct mddev_ident ident
;
54 char *configfile
= NULL
;
57 struct mddev_dev
*devlist
= NULL
;
58 struct mddev_dev
**devlistend
= & devlist
;
61 char *symlinks
= NULL
;
62 int grow_continue
= 0;
63 /* autof indicates whether and how to create device node.
64 * bottom 3 bits are style. Rest (when shifted) are number of parts
66 * 1 - don't create (no)
67 * 2 - if is_standard, then create (yes)
68 * 3 - create as 'md' - reject is_standard mdp (md)
69 * 4 - create as 'mdp' - reject is_standard md (mdp)
70 * 5 - default to md if not is_standard (md in config file)
71 * 6 - default to mdp if not is_standard (part, or mdp in config file)
74 .require_homehost
= 1,
80 .bitmap_chunk
= UnSet
,
83 char sys_hostname
[256];
84 char *mailaddr
= NULL
;
90 int spare_sharing
= 1;
91 struct supertype
*ss
= NULL
;
92 enum flag_mode writemostly
= FlagDefault
;
93 enum flag_mode failfast
= FlagDefault
;
94 char *shortopt
= short_options
;
97 char *remove_path
= NULL
;
98 char *udev_filename
= NULL
;
99 char *dump_directory
= NULL
;
106 srandom(time(0) ^ getpid());
110 ident
.raid_disks
= UnSet
;
111 ident
.super_minor
= UnSet
;
113 ident
.spare_group
= NULL
;
116 ident
.bitmap_fd
= -1;
117 ident
.bitmap_file
= NULL
;
119 ident
.container
= NULL
;
122 while ((option_index
= -1) ,
123 (opt
=getopt_long(argc
, argv
,
124 shortopt
, long_options
,
125 &option_index
)) != -1) {
127 /* firstly, some mode-independent options */
137 fputs(Version
, stderr
);
140 case 'v': c
.verbose
++;
143 case 'q': c
.verbose
--;
147 if (mode
== ASSEMBLE
|| mode
== BUILD
||
148 mode
== CREATE
|| mode
== GROW
||
149 mode
== INCREMENTAL
|| mode
== MANAGE
)
150 break; /* b means bitmap */
155 case 'Y': c
.export
++;
159 if (strcasecmp(optarg
, "<ignore>") == 0)
160 c
.require_homehost
= 0;
166 /* Silently ignore old option */
172 if (asprintf(&c
.prefer
, "/%s/", optarg
) <= 0)
178 fputs(Usage
, stderr
);
181 /* second, figure out the mode.
182 * Some options force the mode. Others
183 * set the mode if it isn't already
189 shortopt
= short_bitmap_options
;
201 case ReAdd
: /* re-add */
205 shortopt
= short_bitmap_options
;
209 case 'A': newmode
= ASSEMBLE
;
210 shortopt
= short_bitmap_auto_options
;
212 case 'B': newmode
= BUILD
;
213 shortopt
= short_bitmap_auto_options
;
215 case 'C': newmode
= CREATE
;
216 shortopt
= short_bitmap_auto_options
;
218 case 'F': newmode
= MONITOR
;
220 case 'G': newmode
= GROW
;
221 shortopt
= short_bitmap_options
;
223 case 'I': newmode
= INCREMENTAL
;
224 shortopt
= short_bitmap_auto_options
;
227 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
;
299 dv
->failfast
= failfast
;
303 devlistend
= &dv
->next
;
308 /* No mode yet, and this is the second device ... */
309 pr_err("An option must be given to set the mode before a second device\n"
310 " (%s) is listed\n", optarg
);
313 if (option_index
>= 0)
314 pr_err("--%s", long_options
[option_index
].name
);
317 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
321 /* if we just set the mode, then done */
335 /* an undecorated option - must be a device name.
338 if (devs_found
> 0 && devmode
== DetailPlatform
) {
339 pr_err("controller may only be specified once. %s ignored\n",
344 if (devs_found
> 0 && mode
== MANAGE
&& !devmode
) {
345 pr_err("Must give one of -a/-r/-f for subsequent devices at %s\n", optarg
);
348 if (devs_found
> 0 && mode
== GROW
&& !devmode
) {
349 pr_err("Must give -a/--add for devices to add: %s\n", optarg
);
352 dv
= xmalloc(sizeof(*dv
));
353 dv
->devname
= optarg
;
354 dv
->disposition
= devmode
;
355 dv
->writemostly
= writemostly
;
356 dv
->failfast
= failfast
;
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. Second value is %s.\n", optarg
);
380 s
.chunk
= parse_size(optarg
);
381 if (s
.chunk
== INVALID_SECTORS
||
382 s
.chunk
< 8 || (s
.chunk
&1)) {
383 pr_err("invalid chunk/rounding value: %s\n",
387 /* Convert sectors to K */
391 case O(INCREMENTAL
, 'e'):
393 case O(ASSEMBLE
,'e'):
394 case O(MISC
,'e'): /* set metadata (superblock) information */
396 pr_err("metadata information already given\n");
399 for(i
=0; !ss
&& superlist
[i
]; i
++)
400 ss
= superlist
[i
]->match_metadata_desc(optarg
);
403 pr_err("unrecognised metadata identifier: %s\n", optarg
);
409 case O(MANAGE
,WriteMostly
):
411 case O(BUILD
,WriteMostly
):
413 case O(CREATE
,WriteMostly
):
414 /* set write-mostly for following devices */
415 writemostly
= FlagSet
;
419 /* clear write-mostly for following devices */
420 writemostly
= FlagClear
;
423 case O(MANAGE
,FailFast
):
424 case O(CREATE
,FailFast
):
427 case O(MANAGE
,NoFailFast
):
428 failfast
= FlagClear
;
433 case O(BUILD
,'z'): /* size */
435 pr_err("size may only be specified once. Second value is %s.\n", optarg
);
438 if (strcmp(optarg
, "max") == 0)
441 s
.size
= parse_size(optarg
);
442 if (s
.size
== INVALID_SECTORS
|| s
.size
< 8) {
443 pr_err("invalid size: %s\n", optarg
);
446 /* convert sectors to K */
451 case O(GROW
,'Z'): /* array size */
452 if (array_size
> 0) {
453 pr_err("array-size may only be specified once. Second value is %s.\n", optarg
);
456 if (strcmp(optarg
, "max") == 0)
457 array_size
= MAX_SIZE
;
459 array_size
= parse_size(optarg
);
460 if (array_size
== 0 ||
461 array_size
== INVALID_SECTORS
) {
462 pr_err("invalid array size: %s\n",
469 case O(CREATE
,DataOffset
):
470 case O(GROW
,DataOffset
):
471 if (data_offset
!= INVALID_SECTORS
) {
472 pr_err("data-offset may only be specified one. Second value is %s.\n", optarg
);
475 if (mode
== CREATE
&& strcmp(optarg
, "variable") == 0)
476 data_offset
= VARIABLE_OFFSET
;
478 data_offset
= parse_size(optarg
);
479 if (data_offset
== INVALID_SECTORS
) {
480 pr_err("invalid data-offset: %s\n",
488 case O(BUILD
,'l'): /* set raid level*/
489 if (s
.level
!= UnSet
) {
490 pr_err("raid level may only be set once. 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
&&
500 s
.level
!= 1 && s
.level
!= LEVEL_MULTIPATH
&&
501 s
.level
!= LEVEL_FAULTY
&& s
.level
!= 10 &&
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. Second value was %s\n", optarg
);
521 s
.layout_str
= optarg
;
522 /* 'Grow' will parse the value */
525 case O(CREATE
,'p'): /* raid5 layout */
526 case O(CREATE
,Layout
):
527 case O(BUILD
,'p'): /* faulty layout */
528 case O(BUILD
,Layout
):
529 if (s
.layout
!= UnSet
) {
530 pr_err("layout may only be sent once. Second value was %s\n", optarg
);
535 pr_err("layout not meaningful for %s arrays.\n",
536 map_num(pers
, s
.level
));
539 pr_err("raid level must be given before layout.\n");
543 s
.layout
= map_name(r5layout
, optarg
);
544 if (s
.layout
==UnSet
) {
545 pr_err("layout %s not understood for raid5.\n",
551 s
.layout
= map_name(r6layout
, optarg
);
552 if (s
.layout
==UnSet
) {
553 pr_err("layout %s not understood for raid6.\n",
560 s
.layout
= parse_layout_10(optarg
);
562 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
570 s
.layout
= parse_layout_faulty(optarg
);
571 if (s
.layout
== -1) {
572 pr_err("layout %s not understood for faulty.\n",
580 case O(CREATE
,AssumeClean
):
581 case O(BUILD
,AssumeClean
): /* assume clean */
582 case O(GROW
,AssumeClean
):
588 case O(BUILD
,'n'): /* number of raid disks */
590 pr_err("raid-devices set twice: %d and %s\n",
591 s
.raiddisks
, optarg
);
594 s
.raiddisks
= parse_num(optarg
);
595 if (s
.raiddisks
<= 0) {
596 pr_err("invalid number of raid devices: %s\n",
600 ident
.raid_disks
= s
.raiddisks
;
602 case O(ASSEMBLE
, Nodes
):
604 case O(CREATE
, Nodes
):
605 c
.nodes
= parse_num(optarg
);
607 pr_err("invalid number for the number of cluster nodes: %s\n",
612 case O(CREATE
, ClusterName
):
613 case O(ASSEMBLE
, ClusterName
):
614 c
.homecluster
= optarg
;
615 if (strlen(c
.homecluster
) > 64) {
616 pr_err("Cluster name too big.\n");
620 case O(CREATE
,'x'): /* number of spare (eXtra) disks */
622 pr_err("spare-devices set twice: %d and %s\n",
623 s
.sparedisks
, optarg
);
626 if (s
.level
!= UnSet
&& s
.level
<= 0 && s
.level
>= -1) {
627 pr_err("spare-devices setting is incompatible with raid level %d\n",
631 s
.sparedisks
= parse_num(optarg
);
632 if (s
.sparedisks
< 0) {
633 pr_err("invalid number of spare-devices: %s\n",
643 case O(INCREMENTAL
,'a'):
644 case O(INCREMENTAL
,Auto
):
645 case O(ASSEMBLE
,'a'):
646 case O(ASSEMBLE
,Auto
): /* auto-creation of device node */
647 c
.autof
= parse_auto(optarg
, "--auto flag", 0);
650 case O(CREATE
,Symlinks
):
651 case O(BUILD
,Symlinks
):
652 case O(ASSEMBLE
,Symlinks
): /* auto creation of symlinks in /dev to /dev/md */
656 case O(BUILD
,'f'): /* force honouring '-n 1' */
657 case O(BUILD
,Force
): /* force honouring '-n 1' */
658 case O(GROW
,'f'): /* ditto */
659 case O(GROW
,Force
): /* ditto */
660 case O(CREATE
,'f'): /* force honouring of device list */
661 case O(CREATE
,Force
): /* force honouring of device list */
662 case O(ASSEMBLE
,'f'): /* force assembly */
663 case O(ASSEMBLE
,Force
): /* force assembly */
664 case O(MISC
,'f'): /* force zero */
665 case O(MISC
,Force
): /* force zero */
666 case O(MANAGE
,Force
): /* add device which is too large */
669 /* now for the Assemble options */
670 case O(ASSEMBLE
, FreezeReshape
): /* Freeze reshape during
672 case O(INCREMENTAL
, FreezeReshape
):
673 c
.freeze_reshape
= 1;
675 case O(CREATE
,'u'): /* uuid of array */
676 case O(ASSEMBLE
,'u'): /* uuid of array */
677 if (ident
.uuid_set
) {
678 pr_err("uuid cannot be set twice. Second value %s.\n", optarg
);
681 if (parse_uuid(optarg
, ident
.uuid
))
684 pr_err("Bad uuid: %s\n", optarg
);
690 case O(ASSEMBLE
,'N'):
693 pr_err("name cannot be set twice. Second value %s.\n", optarg
);
696 if (mode
== MISC
&& !c
.subarray
) {
697 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
700 if (strlen(optarg
) > 32) {
701 pr_err("name '%s' is too long, 32 chars max.\n",
705 strcpy(ident
.name
, optarg
);
708 case O(ASSEMBLE
,'m'): /* super-minor for array */
709 case O(ASSEMBLE
,SuperMinor
):
710 if (ident
.super_minor
!= UnSet
) {
711 pr_err("super-minor cannot be set twice. Second value: %s.\n", optarg
);
714 if (strcmp(optarg
, "dev") == 0)
715 ident
.super_minor
= -2;
717 ident
.super_minor
= parse_num(optarg
);
718 if (ident
.super_minor
< 0) {
719 pr_err("Bad super-minor number: %s.\n", optarg
);
725 case O(ASSEMBLE
,'o'):
731 case O(ASSEMBLE
,'U'): /* update the superblock */
734 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
738 if (mode
== MISC
&& !c
.subarray
) {
739 pr_err("Only subarrays can be updated in misc mode\n");
743 if (strcmp(c
.update
, "sparc2.2") == 0)
745 if (strcmp(c
.update
, "super-minor") == 0)
747 if (strcmp(c
.update
, "summaries") == 0)
749 if (strcmp(c
.update
, "resync") == 0)
751 if (strcmp(c
.update
, "uuid") == 0)
753 if (strcmp(c
.update
, "name") == 0)
755 if (strcmp(c
.update
, "homehost") == 0)
757 if (strcmp(c
.update
, "home-cluster") == 0)
759 if (strcmp(c
.update
, "nodes") == 0)
761 if (strcmp(c
.update
, "devicesize") == 0)
763 if (strcmp(c
.update
, "no-bitmap") == 0)
765 if (strcmp(c
.update
, "bbl") == 0)
767 if (strcmp(c
.update
, "no-bbl") == 0)
769 if (strcmp(c
.update
, "force-no-bbl") == 0)
771 if (strcmp(c
.update
, "metadata") == 0)
773 if (strcmp(c
.update
, "revert-reshape") == 0)
775 if (strcmp(c
.update
, "byteorder")==0) {
777 pr_err("must not set metadata type with --update=byteorder.\n");
780 for(i
=0; !ss
&& superlist
[i
]; i
++)
781 ss
= superlist
[i
]->match_metadata_desc(
784 pr_err("INTERNAL ERROR cannot find 0.swap\n");
790 if (strcmp(c
.update
,"?") == 0 ||
791 strcmp(c
.update
, "help") == 0) {
793 fprintf(outf
, "%s: ", Name
);
797 "%s: '--update=%s' is invalid. ",
800 fprintf(outf
, "Valid --update options are:\n"
801 " 'sparc2.2', 'super-minor', 'uuid', 'name', 'nodes', 'resync',\n"
802 " 'summaries', 'homehost', 'home-cluster', 'byteorder', 'devicesize',\n"
803 " 'no-bitmap', 'metadata', 'revert-reshape'\n"
804 " 'bbl', 'no-bbl', 'force-no-bbl'\n"
806 exit(outf
== stdout
? 0 : 2);
809 /* update=devicesize is allowed with --re-add */
810 if (devmode
!= 'A') {
811 pr_err("--update in Manage mode only allowed with --re-add.\n");
815 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
820 if (strcmp(c
.update
, "devicesize") != 0 &&
821 strcmp(c
.update
, "bbl") != 0 &&
822 strcmp(c
.update
, "force-no-bbl") != 0 &&
823 strcmp(c
.update
, "no-bbl") != 0) {
824 pr_err("only 'devicesize', 'bbl', 'no-bbl', and 'force-no-bbl' can be updated with --re-add\n");
829 case O(INCREMENTAL
,NoDegraded
):
830 pr_err("--no-degraded is deprecated in Incremental mode\n");
831 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
832 c
.runstop
= -1; /* --stop isn't allowed for --assemble,
833 * so we overload slightly */
836 case O(ASSEMBLE
,'c'):
837 case O(ASSEMBLE
,ConfigFile
):
838 case O(INCREMENTAL
, 'c'):
839 case O(INCREMENTAL
, ConfigFile
):
841 case O(MISC
, ConfigFile
):
843 case O(MONITOR
,ConfigFile
):
844 case O(CREATE
,ConfigFile
):
846 pr_err("configfile cannot be set twice. Second value is %s.\n", optarg
);
850 set_conffile(configfile
);
851 /* FIXME possibly check that config file exists. Even parse it */
853 case O(ASSEMBLE
,'s'): /* scan */
856 case O(INCREMENTAL
,'s'):
860 case O(MONITOR
,'m'): /* mail address */
861 case O(MONITOR
,EMail
):
863 pr_err("only specify one mailaddress. %s ignored.\n",
869 case O(MONITOR
,'p'): /* alert program */
870 case O(MONITOR
,ProgramOpt
): /* alert program */
872 pr_err("only specify one alter program. %s ignored.\n",
878 case O(MONITOR
,'r'): /* rebuild increments */
879 case O(MONITOR
,Increment
):
880 increments
= atoi(optarg
);
881 if (increments
> 99 || increments
< 1) {
882 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
887 case O(MONITOR
,'d'): /* delay in seconds */
889 case O(BUILD
,'d'): /* delay for bitmap updates */
892 pr_err("only specify delay once. %s ignored.\n",
895 c
.delay
= parse_num(optarg
);
897 pr_err("invalid delay: %s\n",
903 case O(MONITOR
,'f'): /* daemonise */
904 case O(MONITOR
,Fork
):
907 case O(MONITOR
,'i'): /* pid */
909 pr_err("only specify one pid file. %s ignored.\n",
914 case O(MONITOR
,'1'): /* oneshot */
918 case O(MONITOR
,'t'): /* test */
921 case O(MONITOR
,'y'): /* log messages to syslog */
922 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
925 case O(MONITOR
, NoSharing
):
929 /* now the general management options. Some are applicable
930 * to other modes. None have arguments.
935 case O(MANAGE
,Add
): /* add a drive */
938 case O(MANAGE
,AddSpare
): /* add drive - never re-add */
941 case O(MANAGE
,AddJournal
): /* add journal */
942 if (s
.journaldisks
&& (s
.level
< 4 || s
.level
> 6)) {
943 pr_err("--add-journal is only supported for RAID level 4/5/6.\n");
948 case O(MANAGE
,ReAdd
):
951 case O(MANAGE
,'r'): /* remove a drive */
952 case O(MANAGE
,Remove
):
955 case O(MANAGE
,'f'): /* set faulty */
957 case O(INCREMENTAL
,'f'):
958 case O(INCREMENTAL
,Remove
):
959 case O(INCREMENTAL
,Fail
): /* r for incremental is taken, use f
960 * even though we will both fail and
961 * remove the device */
964 case O(MANAGE
, ClusterConfirm
):
967 case O(MANAGE
,Replace
):
968 /* Mark these devices for replacement */
972 /* These are the replacements to use */
973 if (devmode
!= 'R') {
974 pr_err("--with must follow --replace\n");
979 case O(INCREMENTAL
,'R'):
981 case O(ASSEMBLE
,'R'):
983 case O(CREATE
,'R'): /* Run the array */
985 pr_err("Cannot both Stop and Run an array\n");
992 pr_err("Cannot both Run and Stop an array\n");
1004 case O(MISC
,KillOpt
):
1008 case O(MISC
, ExamineBB
):
1012 case O(MISC
, WaitOpt
):
1013 case O(MISC
, Waitclean
):
1014 case O(MISC
, DetailPlatform
):
1015 case O(MISC
, KillSubarray
):
1016 case O(MISC
, UpdateSubarray
):
1018 case O(MISC
, Restore
):
1019 case O(MISC
,Action
):
1020 if (opt
== KillSubarray
|| opt
== UpdateSubarray
) {
1022 pr_err("subarray can only be specified once\n");
1025 c
.subarray
= optarg
;
1027 if (opt
== Action
) {
1029 pr_err("Only one --action can be specified\n");
1032 if (strcmp(optarg
, "idle") == 0 ||
1033 strcmp(optarg
, "frozen") == 0 ||
1034 strcmp(optarg
, "check") == 0 ||
1035 strcmp(optarg
, "repair") == 0)
1038 pr_err("action must be one of idle, frozen, check, repair\n");
1042 if (devmode
&& devmode
!= opt
&&
1044 (opt
== 'E' && devmode
!= 'Q'))) {
1045 pr_err("--examine/-E cannot be given with ");
1046 if (devmode
== 'E') {
1047 if (option_index
>= 0)
1048 fprintf(stderr
, "--%s\n",
1049 long_options
[option_index
].name
);
1051 fprintf(stderr
, "-%c\n", opt
);
1052 } else if (isalpha(devmode
))
1053 fprintf(stderr
, "-%c\n", devmode
);
1055 fprintf(stderr
, "previous option\n");
1059 if (opt
== Dump
|| opt
== Restore
) {
1060 if (dump_directory
!= NULL
) {
1061 pr_err("dump/restore directory specified twice: %s and %s\n",
1062 dump_directory
, optarg
);
1065 dump_directory
= optarg
;
1068 case O(MISC
, UdevRules
):
1069 if (devmode
&& devmode
!= opt
) {
1070 pr_err("--udev-rules must be the only option.\n");
1073 pr_err("only specify one udev rule filename. %s ignored.\n",
1076 udev_filename
= optarg
;
1084 case O(MISC
, Sparc22
):
1085 if (devmode
!= 'E') {
1086 pr_err("--sparc2.2 only allowed with --examine\n");
1092 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
1093 case O(ASSEMBLE
,Bitmap
):
1095 pr_err("bitmap file needed with -b in --assemble mode\n");
1098 if (strcmp(optarg
, "internal") == 0) {
1099 pr_err("there is no need to specify --bitmap when assembling arrays with internal bitmaps\n");
1102 bitmap_fd
= open(optarg
, O_RDWR
);
1103 if (!*optarg
|| bitmap_fd
< 0) {
1104 pr_err("cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
1107 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
1110 case O(ASSEMBLE
, BackupFile
):
1111 case O(GROW
, BackupFile
):
1112 /* Specify a file into which grow might place a backup,
1113 * or from which assemble might recover a backup
1115 if (c
.backup_file
) {
1116 pr_err("backup file already specified, rejecting %s\n", optarg
);
1119 c
.backup_file
= optarg
;
1122 case O(GROW
, Continue
):
1123 /* Continue interrupted grow
1127 case O(ASSEMBLE
, InvalidBackup
):
1128 /* Acknowledge that the backupfile is invalid, but ask
1129 * to continue anyway
1131 c
.invalid_backup
= 1;
1135 case O(BUILD
,Bitmap
):
1137 case O(CREATE
,Bitmap
): /* here we create the bitmap */
1139 case O(GROW
,Bitmap
):
1140 if (strcmp(optarg
, "internal") == 0 ||
1141 strcmp(optarg
, "none") == 0 ||
1142 strchr(optarg
, '/') != NULL
) {
1143 s
.bitmap_file
= optarg
;
1146 if (strcmp(optarg
, "clustered") == 0) {
1147 s
.bitmap_file
= optarg
;
1148 /* Set the default number of cluster nodes
1149 * to 4 if not already set by user
1156 pr_err("bitmap file must contain a '/', or be 'internal', or be 'clustered', or 'none'\n"
1157 " not '%s'\n", optarg
);
1160 case O(GROW
,BitmapChunk
):
1161 case O(BUILD
,BitmapChunk
):
1162 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
1163 s
.bitmap_chunk
= parse_size(optarg
);
1164 if (s
.bitmap_chunk
== 0 ||
1165 s
.bitmap_chunk
== INVALID_SECTORS
||
1166 s
.bitmap_chunk
& (s
.bitmap_chunk
- 1)) {
1167 pr_err("invalid bitmap chunksize: %s\n",
1171 s
.bitmap_chunk
= s
.bitmap_chunk
* 512;
1174 case O(GROW
, WriteBehind
):
1175 case O(BUILD
, WriteBehind
):
1176 case O(CREATE
, WriteBehind
): /* write-behind mode */
1177 s
.write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
1179 s
.write_behind
= parse_num(optarg
);
1180 if (s
.write_behind
< 0 ||
1181 s
.write_behind
> 16383) {
1182 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n", optarg
);
1188 case O(INCREMENTAL
, 'r'):
1189 case O(INCREMENTAL
, RebuildMapOpt
):
1192 case O(INCREMENTAL
, IncrementalPath
):
1193 remove_path
= optarg
;
1195 case O(CREATE
, WriteJournal
):
1196 if (s
.journaldisks
) {
1197 pr_err("Please specify only one journal device for the array.\n");
1198 pr_err("Ignoring --write-journal %s...\n", optarg
);
1201 dv
= xmalloc(sizeof(*dv
));
1202 dv
->devname
= optarg
;
1203 dv
->disposition
= 'j'; /* WriteJournal */
1207 devlistend
= &dv
->next
;
1213 /* We have now processed all the valid options. Anything else is
1216 if (option_index
> 0)
1217 pr_err(":option --%s not valid in %s mode\n",
1218 long_options
[option_index
].name
,
1219 map_num(modes
, mode
));
1221 pr_err("option -%c not valid in %s mode\n",
1222 opt
, map_num(modes
, mode
));
1229 if (print_help
== 2)
1230 help_text
= OptionHelp
;
1232 help_text
= mode_help
[mode
];
1233 if (help_text
== NULL
)
1235 fputs(help_text
,stdout
);
1239 if (s
.journaldisks
&& (s
.level
< 4 || s
.level
> 6)) {
1240 pr_err("--write-journal is only supported for RAID level 4/5/6.\n");
1244 if (!mode
&& devs_found
) {
1247 if (devlist
->disposition
== 0)
1248 devlist
->disposition
= devmode
;
1251 fputs(Usage
, stderr
);
1256 struct createinfo
*ci
= conf_get_create_info();
1258 if (strcasecmp(symlinks
, "yes") == 0)
1260 else if (strcasecmp(symlinks
, "no") == 0)
1263 pr_err("option --symlinks must be 'no' or 'yes'\n");
1267 /* Ok, got the option parsing out of the way
1268 * hopefully it's mostly right but there might be some stuff
1271 * That is mosty checked in the per-mode stuff but...
1273 * For @,B,C and A without -s, the first device listed must be
1274 * an md device. We check that here and open it.
1277 if (mode
== MANAGE
|| mode
== BUILD
|| mode
== CREATE
||
1278 mode
== GROW
|| (mode
== ASSEMBLE
&& ! c
.scan
)) {
1279 if (devs_found
< 1) {
1280 pr_err("an md device must be given in this mode\n");
1283 if ((int)ident
.super_minor
== -2 && c
.autof
) {
1284 pr_err("--super-minor=dev is incompatible with --auto\n");
1287 if (mode
== MANAGE
|| mode
== GROW
) {
1288 mdfd
= open_mddev(devlist
->devname
, 1);
1292 /* non-existent device is OK */
1293 mdfd
= open_mddev(devlist
->devname
, 0);
1295 pr_err("device %s exists but is not an md array.\n", devlist
->devname
);
1298 if ((int)ident
.super_minor
== -2) {
1301 pr_err("--super-minor=dev given, and listed device %s doesn't exist.\n",
1306 ident
.super_minor
= minor(stb
.st_rdev
);
1308 if (mdfd
>= 0 && mode
!= MANAGE
&& mode
!= GROW
) {
1309 /* We don't really want this open yet, we just might
1310 * have wanted to check some things
1318 if (s
.raiddisks
== 1 && !c
.force
&& s
.level
!= LEVEL_FAULTY
) {
1319 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1320 " a mistake. If you really mean it you will need to specify --force before\n"
1321 " setting the number of drives.\n");
1326 if (c
.homehost
== NULL
&& c
.require_homehost
)
1327 c
.homehost
= conf_get_homehost(&c
.require_homehost
);
1328 if (c
.homehost
== NULL
|| strcasecmp(c
.homehost
, "<system>") == 0) {
1329 if (gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1330 sys_hostname
[sizeof(sys_hostname
)-1] = 0;
1331 c
.homehost
= sys_hostname
;
1335 (!c
.homehost
[0] || strcasecmp(c
.homehost
, "<none>") == 0)) {
1337 c
.require_homehost
= 0;
1342 set_hooks(); /* set hooks from libs */
1344 if (c
.homecluster
== NULL
&& (c
.nodes
> 0)) {
1345 c
.homecluster
= conf_get_homecluster();
1346 if (c
.homecluster
== NULL
)
1347 rv
= get_cluster_name(&c
.homecluster
);
1349 pr_err("The md can't get cluster name\n");
1354 if (c
.backup_file
&& data_offset
!= INVALID_SECTORS
) {
1355 pr_err("--backup-file and --data-offset are incompatible\n");
1359 if ((mode
== MISC
&& devmode
== 'E') ||
1360 (mode
== MONITOR
&& spare_sharing
== 0))
1361 /* Anyone may try this */;
1362 else if (geteuid() != 0) {
1363 pr_err("must be super-user to perform this action\n");
1367 ident
.autof
= c
.autof
;
1369 if (c
.scan
&& c
.verbose
< 2)
1370 /* --scan implied --brief unless -vv */
1375 /* readonly, add/remove, readwrite, runstop */
1377 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1378 if (!rv
&& devs_found
>1)
1379 rv
= Manage_subdevs(devlist
->devname
, mdfd
,
1380 devlist
->next
, c
.verbose
, c
.test
,
1382 if (!rv
&& c
.readonly
< 0)
1383 rv
= Manage_ro(devlist
->devname
, mdfd
, c
.readonly
);
1384 if (!rv
&& c
.runstop
> 0)
1385 rv
= Manage_run(devlist
->devname
, mdfd
, &c
);
1386 if (!rv
&& c
.runstop
< 0)
1387 rv
= Manage_stop(devlist
->devname
, mdfd
, c
.verbose
, 0);
1390 if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1391 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 &&
1393 /* Only a device has been given, so get details from config file */
1394 struct mddev_ident
*array_ident
= conf_get_ident(devlist
->devname
);
1395 if (array_ident
== NULL
) {
1396 pr_err("%s not identified in config file.\n",
1402 if (array_ident
->autof
== 0)
1403 array_ident
->autof
= c
.autof
;
1404 rv
|= Assemble(ss
, devlist
->devname
, array_ident
,
1408 rv
= Assemble(ss
, devlist
->devname
, &ident
,
1410 else if (devs_found
> 0) {
1411 if (c
.update
&& devs_found
> 1) {
1412 pr_err("can only update a single array at a time\n");
1415 if (c
.backup_file
&& devs_found
> 1) {
1416 pr_err("can only assemble a single array when providing a backup file.\n");
1419 for (dv
= devlist
; dv
; dv
=dv
->next
) {
1420 struct mddev_ident
*array_ident
= conf_get_ident(dv
->devname
);
1421 if (array_ident
== NULL
) {
1422 pr_err("%s not identified in config file.\n",
1427 if (array_ident
->autof
== 0)
1428 array_ident
->autof
= c
.autof
;
1429 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1434 pr_err("--update not meaningful with a --scan assembly.\n");
1437 if (c
.backup_file
) {
1438 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1441 rv
= scan_assemble(ss
, &c
, &ident
);
1447 c
.delay
= DEFAULT_BITMAP_DELAY
;
1448 if (s
.write_behind
&& !s
.bitmap_file
) {
1449 pr_err("write-behind mode requires a bitmap.\n");
1453 if (s
.raiddisks
== 0) {
1454 pr_err("no raid-devices specified.\n");
1459 if (s
.bitmap_file
) {
1460 if (strcmp(s
.bitmap_file
, "internal") == 0 ||
1461 strcmp(s
.bitmap_file
, "clustered") == 0) {
1462 pr_err("'internal' and 'clustered' bitmaps not supported with --build\n");
1467 rv
= Build(devlist
->devname
, devlist
->next
, &s
, &c
);
1471 c
.delay
= DEFAULT_BITMAP_DELAY
;
1474 if (!s
.bitmap_file
||
1475 strcmp(s
.bitmap_file
, "clustered") != 0) {
1476 pr_err("--nodes argument only compatible with --bitmap=clustered\n");
1482 pr_err("--bitmap=clustered is currently supported with RAID mirror only\n");
1488 if (s
.write_behind
&& !s
.bitmap_file
) {
1489 pr_err("write-behind mode requires a bitmap.\n");
1493 if (s
.raiddisks
== 0) {
1494 pr_err("no raid-devices specified.\n");
1499 rv
= Create(ss
, devlist
->devname
,
1500 ident
.name
, ident
.uuid_set
? ident
.uuid
: NULL
,
1501 devs_found
-1, devlist
->next
,
1502 &s
, &c
, data_offset
);
1505 if (devmode
== 'E') {
1506 if (devlist
== NULL
&& !c
.scan
) {
1507 pr_err("No devices to examine\n");
1510 if (devlist
== NULL
)
1511 devlist
= conf_get_devs();
1512 if (devlist
== NULL
) {
1513 pr_err("No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1516 rv
= Examine(devlist
, &c
, ss
);
1517 } else if (devmode
== DetailPlatform
) {
1518 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? c
.scan
: 1,
1519 c
.verbose
, c
.export
,
1520 devlist
? devlist
->devname
: NULL
);
1521 } else if (devlist
== NULL
) {
1522 if (devmode
== 'S' && c
.scan
)
1523 rv
= stop_scan(c
.verbose
);
1524 else if ((devmode
== 'D' || devmode
== Waitclean
) &&
1526 rv
= misc_scan(devmode
, &c
);
1527 else if (devmode
== UdevRules
)
1528 rv
= Write_rules(udev_filename
);
1530 pr_err("No devices given.\n");
1534 rv
= misc_list(devlist
, &ident
, dump_directory
, ss
, &c
);
1537 if (!devlist
&& !c
.scan
) {
1538 pr_err("Cannot monitor: need --scan or at least one device\n");
1542 if (pidfile
&& !daemonise
) {
1543 pr_err("Cannot write a pid file when not in daemon mode\n");
1548 if (get_linux_version() > 2006016)
1549 /* mdstat responds to poll */
1554 rv
= Monitor(devlist
, mailaddr
, program
,
1555 &c
, daemonise
, oneshot
,
1556 dosyslog
, pidfile
, increments
,
1561 if (array_size
> 0) {
1562 /* alway impose array size first, independent of
1564 * Do not allow level or raid_disks changes at the
1565 * same time as that can be irreversibly destructive.
1569 if (s
.raiddisks
|| s
.level
!= UnSet
) {
1570 pr_err("cannot change array size in same operation as changing raiddisks or level.\n"
1571 " Change size first, then check that data is still intact.\n");
1575 sysfs_init(&sra
, mdfd
, NULL
);
1576 if (array_size
== MAX_SIZE
)
1577 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1579 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1582 pr_err("--array-size setting is too large.\n");
1584 pr_err("current kernel does not support setting --array-size\n");
1589 if (devs_found
> 1 && s
.raiddisks
== 0 && s
.level
== UnSet
) {
1591 if (s
.size
> 0 || s
.chunk
||
1592 s
.layout_str
|| s
.bitmap_file
) {
1593 pr_err("--add cannot be used with other geometry changes in --grow mode\n");
1597 for (dv
=devlist
->next
; dv
; dv
=dv
->next
) {
1598 rv
= Grow_Add_device(devlist
->devname
, mdfd
,
1603 } else if (s
.bitmap_file
) {
1604 if (s
.size
> 0 || s
.raiddisks
|| s
.chunk
||
1605 s
.layout_str
|| devs_found
> 1) {
1606 pr_err("--bitmap changes cannot be used with other geometry changes in --grow mode\n");
1611 c
.delay
= DEFAULT_BITMAP_DELAY
;
1612 rv
= Grow_addbitmap(devlist
->devname
, mdfd
, &c
, &s
);
1613 } else if (grow_continue
)
1614 rv
= Grow_continue_command(devlist
->devname
,
1615 mdfd
, c
.backup_file
,
1617 else if (s
.size
> 0 || s
.raiddisks
|| s
.layout_str
||
1618 s
.chunk
!= 0 || s
.level
!= UnSet
||
1619 data_offset
!= INVALID_SECTORS
) {
1620 rv
= Grow_reshape(devlist
->devname
, mdfd
,
1622 data_offset
, &c
, &s
);
1623 } else if (array_size
== 0)
1624 pr_err("no changes to --grow\n");
1633 pr_err("In --incremental mode, a device cannot be given with --scan.\n");
1636 if (c
.runstop
<= 0) {
1637 pr_err("--incremental --scan meaningless without --run.\n");
1640 if (devmode
== 'f') {
1641 pr_err("--incremental --scan --fail not supported.\n");
1644 rv
= IncrementalScan(&c
, NULL
);
1647 if (!rebuild_map
&& !c
.scan
) {
1648 pr_err("--incremental requires a device.\n");
1653 if (devmode
== 'f') {
1654 if (devlist
->next
) {
1655 pr_err("'--incremental --fail' can only handle one device.\n");
1659 rv
= IncrementalRemove(devlist
->devname
, remove_path
,
1662 rv
= Incremental(devlist
, &c
, ss
);
1671 static int scan_assemble(struct supertype
*ss
,
1673 struct mddev_ident
*ident
)
1675 struct mddev_ident
*a
, *array_list
= conf_get_ident(NULL
);
1676 struct mddev_dev
*devlist
= conf_get_devs();
1677 struct map_ent
*map
= NULL
;
1680 int failures
, successes
;
1682 if (conf_verify_devnames(array_list
)) {
1683 pr_err("Duplicate MD device names in conf file were found.\n");
1686 if (devlist
== NULL
) {
1687 pr_err("No devices listed in conf file were found.\n");
1690 for (a
= array_list
; a
; a
= a
->next
) {
1693 a
->autof
= c
->autof
;
1696 pr_err("failed to get exclusive lock on mapfile\n");
1701 for (a
= array_list
; a
; a
= a
->next
) {
1706 strcasecmp(a
->devname
, "<ignore>") == 0)
1709 r
= Assemble(ss
, a
->devname
,
1719 } while (failures
&& successes
);
1720 if (c
->homehost
&& cnt
== 0) {
1721 /* Maybe we can auto-assemble something.
1722 * Repeatedly call Assemble in auto-assemble mode
1727 ident
->autof
= c
->autof
;
1729 struct mddev_dev
*devlist
= conf_get_devs();
1732 rv2
= Assemble(ss
, NULL
,
1740 /* Incase there are stacked devices, we need to go around again */
1742 if (cnt
== 0 && rv
== 0) {
1743 pr_err("No arrays found in config file or automatically\n");
1747 } else if (cnt
== 0 && rv
== 0) {
1748 pr_err("No arrays found in config file\n");
1755 static int misc_scan(char devmode
, struct context
*c
)
1757 /* apply --detail or --wait-clean to
1758 * all devices in /proc/mdstat
1760 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1761 struct mdstat_ent
*e
;
1762 struct map_ent
*map
= NULL
;
1766 for (members
= 0; members
<= 1; members
++) {
1767 for (e
=ms
; e
; e
=e
->next
) {
1771 int member
= e
->metadata_version
&&
1772 strncmp(e
->metadata_version
,
1773 "external:/", 10) == 0;
1774 if (members
!= member
)
1776 me
= map_by_devnm(&map
, e
->devnm
);
1778 && strcmp(me
->path
, "/unknown") != 0)
1780 if (name
== NULL
|| stat(name
, &stb
) != 0)
1781 name
= get_md_name(e
->devnm
);
1784 pr_err("cannot find device file for %s\n",
1789 rv
|= Detail(name
, c
);
1791 rv
|= WaitClean(name
, -1, c
->verbose
);
1799 static int stop_scan(int verbose
)
1801 /* apply --stop to all devices in /proc/mdstat */
1802 /* Due to possible stacking of devices, repeat until
1803 * nothing more can be stopped
1805 int progress
=1, err
;
1809 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1810 struct mdstat_ent
*e
;
1812 if (!progress
) last
= 1;
1813 progress
= 0; err
= 0;
1814 for (e
=ms
; e
; e
=e
->next
) {
1815 char *name
= get_md_name(e
->devnm
);
1819 pr_err("cannot find device file for %s\n",
1823 mdfd
= open_mddev(name
, 1);
1825 if (Manage_stop(name
, mdfd
, verbose
, !last
))
1835 } while (!last
&& err
);
1841 static int misc_list(struct mddev_dev
*devlist
,
1842 struct mddev_ident
*ident
,
1843 char *dump_directory
,
1844 struct supertype
*ss
, struct context
*c
)
1846 struct mddev_dev
*dv
;
1849 for (dv
=devlist
; dv
; dv
=(rv
& 16) ? NULL
: dv
->next
) {
1852 switch(dv
->disposition
) {
1854 rv
|= Detail(dv
->devname
, c
);
1856 case KillOpt
: /* Zero superblock */
1858 rv
|= Kill(dv
->devname
, ss
, c
->force
, c
->verbose
,0);
1862 rv
|= Kill(dv
->devname
, NULL
, c
->force
, v
, 0);
1869 rv
|= Query(dv
->devname
); continue;
1871 rv
|= ExamineBitmap(dv
->devname
, c
->brief
, ss
); continue;
1873 rv
|= ExamineBadblocks(dv
->devname
, c
->brief
, ss
); continue;
1876 rv
|= Wait(dv
->devname
); continue;
1878 rv
|= WaitClean(dv
->devname
, -1, c
->verbose
); continue;
1880 rv
|= Kill_subarray(dv
->devname
, c
->subarray
, c
->verbose
);
1882 case UpdateSubarray
:
1883 if (c
->update
== NULL
) {
1884 pr_err("-U/--update must be specified with --update-subarray\n");
1888 rv
|= Update_subarray(dv
->devname
, c
->subarray
,
1889 c
->update
, ident
, c
->verbose
);
1892 rv
|= Dump_metadata(dv
->devname
, dump_directory
, c
, ss
);
1895 rv
|= Restore_metadata(dv
->devname
, dump_directory
, c
, ss
,
1896 (dv
== devlist
&& dv
->next
== NULL
));
1899 rv
|= SetAction(dv
->devname
, c
->action
);
1902 if (dv
->devname
[0] == '/')
1903 mdfd
= open_mddev(dv
->devname
, 1);
1905 mdfd
= open_dev(dv
->devname
);
1907 pr_err("Cannot open %s\n", dv
->devname
);
1910 switch(dv
->disposition
) {
1913 rv
|= Manage_run(dv
->devname
, mdfd
, c
); break;
1915 rv
|= Manage_stop(dv
->devname
, mdfd
, c
->verbose
, 0); break;
1917 rv
|= Manage_ro(dv
->devname
, mdfd
, 1); break;
1919 rv
|= Manage_ro(dv
->devname
, mdfd
, -1); break;
1928 int SetAction(char *dev
, char *action
)
1930 int fd
= open(dev
, O_RDONLY
);
1933 pr_err("Couldn't open %s: %s\n", dev
, strerror(errno
));
1936 sysfs_init(&mdi
, fd
, NULL
);
1938 if (!mdi
.sys_name
[0]) {
1939 pr_err("%s is no an md array\n", dev
);
1943 if (sysfs_set_str(&mdi
, NULL
, "sync_action", action
) < 0) {
1944 pr_err("Count not set action for %s to %s: %s\n",
1945 dev
, action
, strerror(errno
));