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 struct mddev_ident ident
;
53 char *configfile
= NULL
;
56 struct mddev_dev
*devlist
= NULL
;
57 struct mddev_dev
**devlistend
= & devlist
;
59 mdu_array_info_t array
;
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,
79 .bitmap_chunk
= UnSet
,
80 .consistency_policy
= CONSISTENCY_POLICY_UNKNOWN
,
81 .data_offset
= INVALID_SECTORS
,
84 char sys_hostname
[256];
85 char *mailaddr
= NULL
;
91 int spare_sharing
= 1;
92 struct supertype
*ss
= NULL
;
93 enum flag_mode writemostly
= FlagDefault
;
94 enum flag_mode failfast
= FlagDefault
;
95 char *shortopt
= short_options
;
98 char *remove_path
= NULL
;
99 char *udev_filename
= NULL
;
100 char *dump_directory
= NULL
;
108 srandom(time(0) ^ getpid());
110 if (get_linux_version() < 2006032) {
111 pr_err("This version of mdadm does not support kernels older than 2.6.32\n");
117 while ((option_index
= -1),
118 (opt
= getopt_long(argc
, argv
, shortopt
, long_options
,
119 &option_index
)) != -1) {
121 /* firstly, some mode-independent options */
131 fputs(Version
, stderr
);
134 case 'v': c
.verbose
++;
137 case 'q': c
.verbose
--;
141 if (mode
== ASSEMBLE
|| mode
== BUILD
||
142 mode
== CREATE
|| mode
== GROW
||
143 mode
== INCREMENTAL
|| mode
== MANAGE
)
144 break; /* b means bitmap */
153 case 'Y': c
.export
++;
157 if (is_devname_ignore(optarg
) == true)
158 c
.require_homehost
= 0;
164 /* Silently ignore old option */
170 if (asprintf(&c
.prefer
, "/%s/", optarg
) <= 0)
176 fputs(Usage
, stderr
);
179 /* second, figure out the mode.
180 * Some options force the mode. Others
181 * set the mode if it isn't already
187 shortopt
= short_bitmap_options
;
199 case ReAdd
: /* re-add */
203 shortopt
= short_bitmap_options
;
207 case 'A': newmode
= ASSEMBLE
;
208 shortopt
= short_bitmap_auto_options
;
210 case 'B': newmode
= BUILD
;
211 shortopt
= short_bitmap_auto_options
;
213 case 'C': newmode
= CREATE
;
214 shortopt
= short_bitmap_auto_options
;
216 case 'F': newmode
= MONITOR
;
217 shortopt
= short_monitor_options
;
219 case 'G': newmode
= GROW
;
220 shortopt
= short_bitmap_options
;
222 case 'I': newmode
= INCREMENTAL
;
223 shortopt
= short_bitmap_auto_options
;
226 newmode
= AUTODETECT
;
261 if (mode
&& newmode
== mode
) {
262 /* everybody happy ! */
263 } else if (mode
&& newmode
!= mode
) {
266 if (option_index
>= 0)
267 fprintf(stderr
, "--%s", long_options
[option_index
].name
);
269 fprintf(stderr
, "-%c", opt
);
270 fprintf(stderr
, " would set mdadm mode to \"%s\", but it is already set to \"%s\".\n",
271 map_num_s(modes
, newmode
),
272 map_num_s(modes
, mode
));
274 } else if (!mode
&& newmode
) {
276 if (mode
== MISC
&& devs_found
) {
277 pr_err("No action given for %s in --misc mode\n",
279 cont_err("Action options must come before device names\n");
283 /* special case of -c --help */
284 if ((opt
== 'c' || opt
== ConfigFile
) &&
285 (strncmp(optarg
, "--h", 3) == 0 ||
286 strncmp(optarg
, "-h", 2) == 0)) {
287 fputs(Help_config
, stdout
);
291 /* If first option is a device, don't force the mode yet */
293 if (devs_found
== 0) {
294 dv
= xmalloc(sizeof(*dv
));
295 dv
->devname
= optarg
;
296 dv
->disposition
= devmode
;
297 dv
->writemostly
= writemostly
;
298 dv
->failfast
= failfast
;
302 devlistend
= &dv
->next
;
307 /* No mode yet, and this is the second device ... */
308 pr_err("An option must be given to set the mode before a second device\n"
309 " (%s) is listed\n", optarg
);
312 if (option_index
>= 0)
313 pr_err("--%s", long_options
[option_index
].name
);
316 fprintf(stderr
, " does not set the mode, and so cannot be the first option.\n");
320 /* if we just set the mode, then done */
334 /* an undecorated option - must be a device name.
337 if (devs_found
> 0 && devmode
== DetailPlatform
) {
338 pr_err("controller may only be specified once. %s ignored\n",
343 if (devs_found
> 0 && mode
== MANAGE
&& !devmode
) {
344 pr_err("Must give one of -a/-r/-f for subsequent devices at %s\n", optarg
);
347 if (devs_found
> 0 && mode
== GROW
&& !devmode
) {
348 pr_err("Must give -a/--add for devices to add: %s\n", optarg
);
351 dv
= xmalloc(sizeof(*dv
));
352 dv
->devname
= optarg
;
353 dv
->disposition
= devmode
;
354 dv
->writemostly
= writemostly
;
355 dv
->failfast
= failfast
;
359 devlistend
= &dv
->next
;
365 /* We've got a mode, and opt is now something else which
366 * could depend on the mode */
367 #define O(a,b) ((a<<16)|b)
368 switch (O(mode
,opt
)) {
370 case O(GROW
,ChunkSize
):
372 case O(CREATE
,ChunkSize
):
373 case O(BUILD
,'c'): /* chunk or rounding */
374 case O(BUILD
,ChunkSize
): /* chunk or rounding */
376 pr_err("chunk/rounding may only be specified once. Second value is %s.\n", optarg
);
379 s
.chunk
= parse_size(optarg
);
380 if (s
.chunk
== INVALID_SECTORS
||
381 s
.chunk
< 8 || (s
.chunk
&1)) {
382 pr_err("invalid chunk/rounding value: %s\n",
386 /* Convert sectors to K */
390 case O(INCREMENTAL
, 'e'):
392 case O(ASSEMBLE
,'e'):
393 case O(MISC
,'e'): /* set metadata (superblock) information */
395 pr_err("metadata information already given\n");
398 for(i
= 0; !ss
&& superlist
[i
]; i
++)
399 ss
= superlist
[i
]->match_metadata_desc(optarg
);
402 pr_err("unrecognised metadata identifier: %s\n", optarg
);
408 case O(MANAGE
,WriteMostly
):
410 case O(BUILD
,WriteMostly
):
412 case O(CREATE
,WriteMostly
):
413 /* set write-mostly for following devices */
414 writemostly
= FlagSet
;
418 /* clear write-mostly for following devices */
419 writemostly
= FlagClear
;
422 case O(MANAGE
,FailFast
):
423 case O(CREATE
,FailFast
):
426 case O(MANAGE
,NoFailFast
):
427 failfast
= FlagClear
;
432 case O(BUILD
,'z'): /* size */
434 pr_err("size may only be specified once. Second value is %s.\n", optarg
);
437 if (strcmp(optarg
, "max") == 0)
440 s
.size
= parse_size(optarg
);
441 if (s
.size
== INVALID_SECTORS
|| s
.size
< 8) {
442 pr_err("invalid size: %s\n", optarg
);
445 /* convert sectors to K */
450 case O(GROW
,'Z'): /* array size */
451 if (array_size
> 0) {
452 pr_err("array-size may only be specified once. Second value is %s.\n", optarg
);
455 if (strcmp(optarg
, "max") == 0)
456 array_size
= MAX_SIZE
;
458 array_size
= parse_size(optarg
);
459 if (array_size
== 0 ||
460 array_size
== INVALID_SECTORS
) {
461 pr_err("invalid array size: %s\n",
468 case O(CREATE
,DataOffset
):
469 case O(GROW
,DataOffset
):
470 if (s
.data_offset
!= INVALID_SECTORS
) {
471 pr_err("data-offset may only be specified one. Second value is %s.\n", optarg
);
474 if (mode
== CREATE
&& strcmp(optarg
, "variable") == 0)
475 s
.data_offset
= VARIABLE_OFFSET
;
477 s
.data_offset
= parse_size(optarg
);
478 if (s
.data_offset
== INVALID_SECTORS
) {
479 pr_err("invalid data-offset: %s\n",
487 case O(BUILD
,'l'): /* set raid level*/
488 if (s
.level
!= UnSet
) {
489 pr_err("raid level may only be set once. Second value is %s.\n", optarg
);
492 s
.level
= map_name(pers
, optarg
);
493 if (s
.level
== UnSet
) {
494 pr_err("invalid raid level: %s\n",
498 if (s
.level
!= 0 && s
.level
!= LEVEL_LINEAR
&&
499 s
.level
!= 1 && s
.level
!= LEVEL_MULTIPATH
&&
500 s
.level
!= LEVEL_FAULTY
&& s
.level
!= 10 &&
502 pr_err("Raid level %s not permitted with --build.\n",
506 if (s
.sparedisks
> 0 && s
.level
< 1 && s
.level
>= -1) {
507 pr_err("raid level %s is incompatible with spare-devices setting.\n",
511 ident
.level
= s
.level
;
514 case O(GROW
, 'p'): /* new layout */
515 case O(GROW
, Layout
):
517 pr_err("layout may only be sent once. Second value was %s\n", optarg
);
520 s
.layout_str
= optarg
;
521 /* 'Grow' will parse the value */
524 case O(CREATE
,'p'): /* raid5 layout */
525 case O(CREATE
,Layout
):
526 case O(BUILD
,'p'): /* faulty layout */
527 case O(BUILD
,Layout
):
528 if (s
.layout
!= UnSet
) {
529 pr_err("layout may only be sent once. Second value was %s\n", optarg
);
534 pr_err("layout not meaningful for %s arrays.\n",
535 map_num_s(pers
, s
.level
));
538 pr_err("raid level must be given before layout.\n");
542 s
.layout
= map_name(r0layout
, optarg
);
543 if (s
.layout
== UnSet
) {
544 pr_err("layout %s not understood for raid0.\n",
550 s
.layout
= map_name(r5layout
, optarg
);
551 if (s
.layout
== UnSet
) {
552 pr_err("layout %s not understood for raid5.\n",
558 s
.layout
= map_name(r6layout
, optarg
);
559 if (s
.layout
== UnSet
) {
560 pr_err("layout %s not understood for raid6.\n",
567 s
.layout
= parse_layout_10(optarg
);
569 pr_err("layout for raid10 must be 'nNN', 'oNN' or 'fNN' where NN is a number, not %s\n", optarg
);
577 s
.layout
= parse_layout_faulty(optarg
);
578 if (s
.layout
== -1) {
579 pr_err("layout %s not understood for faulty.\n",
587 case O(CREATE
,AssumeClean
):
588 case O(BUILD
,AssumeClean
): /* assume clean */
589 case O(GROW
,AssumeClean
):
593 case O(CREATE
, WriteZeroes
):
599 case O(BUILD
,'n'): /* number of raid disks */
601 pr_err("raid-devices set twice: %d and %s\n",
602 s
.raiddisks
, optarg
);
605 if (parse_num(&s
.raiddisks
, optarg
) != 0 || s
.raiddisks
<= 0) {
606 pr_err("invalid number of raid devices: %s\n",
610 ident
.raid_disks
= s
.raiddisks
;
612 case O(ASSEMBLE
, Nodes
):
614 case O(CREATE
, Nodes
):
615 if (parse_num(&c
.nodes
, optarg
) != 0 || c
.nodes
< 2) {
616 pr_err("clustered array needs two nodes at least: %s\n",
621 case O(CREATE
, ClusterName
):
622 case O(ASSEMBLE
, ClusterName
):
623 c
.homecluster
= optarg
;
624 if (strlen(c
.homecluster
) > 64) {
625 pr_err("Cluster name too big.\n");
629 case O(CREATE
,'x'): /* number of spare (eXtra) disks */
631 pr_err("spare-devices set twice: %d and %s\n",
632 s
.sparedisks
, optarg
);
635 if (s
.level
!= UnSet
&& s
.level
<= 0 && s
.level
>= -1) {
636 pr_err("spare-devices setting is incompatible with raid level %d\n",
640 if (parse_num(&s
.sparedisks
, optarg
) != 0 || s
.sparedisks
< 0) {
641 pr_err("invalid number of spare-devices: %s\n",
651 case O(INCREMENTAL
,'a'):
652 case O(INCREMENTAL
,Auto
):
653 case O(ASSEMBLE
,'a'):
654 case O(ASSEMBLE
,Auto
): /* auto-creation of device node */
655 c
.autof
= parse_auto(optarg
, "--auto flag", 0);
657 case O(BUILD
,'f'): /* force honouring '-n 1' */
658 case O(BUILD
,Force
): /* force honouring '-n 1' */
659 case O(GROW
,'f'): /* ditto */
660 case O(GROW
,Force
): /* ditto */
661 case O(CREATE
,'f'): /* force honouring of device list */
662 case O(CREATE
,Force
): /* force honouring of device list */
663 case O(ASSEMBLE
,'f'): /* force assembly */
664 case O(ASSEMBLE
,Force
): /* force assembly */
665 case O(MISC
,'f'): /* force zero */
666 case O(MISC
,Force
): /* force zero */
667 case O(MANAGE
,Force
): /* add device which is too large */
670 /* now for the Assemble options */
671 case O(ASSEMBLE
, FreezeReshape
): /* Freeze reshape during
673 case O(INCREMENTAL
, FreezeReshape
):
674 c
.freeze_reshape
= 1;
676 case O(CREATE
,'u'): /* uuid of array */
677 case O(ASSEMBLE
,'u'): /* uuid of array */
678 if (ident
.uuid_set
) {
679 pr_err("uuid cannot be set twice. Second value %s.\n", optarg
);
682 if (parse_uuid(optarg
, ident
.uuid
))
685 pr_err("Bad uuid: %s\n", optarg
);
691 case O(ASSEMBLE
,'N'):
693 if (mode
== MISC
&& !c
.subarray
) {
694 pr_err("-N/--name only valid with --update-subarray in misc mode\n");
698 if (ident_set_name(&ident
, optarg
) != MDADM_STATUS_SUCCESS
)
703 case O(ASSEMBLE
,'m'): /* super-minor for array */
704 case O(ASSEMBLE
,SuperMinor
):
705 if (ident
.super_minor
!= UnSet
) {
706 pr_err("super-minor cannot be set twice. Second value: %s.\n", optarg
);
709 if (strcmp(optarg
, "dev") == 0)
710 ident
.super_minor
= -2;
711 else if (parse_num(&ident
.super_minor
, optarg
) != 0 || ident
.super_minor
< 0) {
712 pr_err("Bad super-minor number: %s.\n", optarg
);
717 case O(ASSEMBLE
,'o'):
723 case O(ASSEMBLE
,'U'): /* update the superblock */
725 enum update_opt print_mode
= UOPT_HELP
;
726 const char *error_addon
= "update option";
729 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
730 map_num(update_options
, c
.update
), optarg
);
733 if (mode
== MISC
&& !c
.subarray
) {
734 pr_err("Only subarrays can be updated in misc mode\n");
738 c
.update
= map_name(update_options
, optarg
);
740 if (devmode
== UpdateSubarray
) {
741 print_mode
= UOPT_SUBARRAY_ONLY
;
742 error_addon
= "update-subarray option";
744 if (c
.update
> UOPT_SUBARRAY_ONLY
&& c
.update
< UOPT_HELP
)
745 c
.update
= UOPT_UNDEFINED
;
750 pr_err("'--update=%s' is invalid %s. ",
751 optarg
, error_addon
);
756 fprint_update_options(outf
, print_mode
);
757 exit(outf
== stdout
? 0 : 2);
760 pr_err("must not set metadata type with --update=byteorder.\n");
769 /* update=devicesize is allowed with --re-add */
770 if (devmode
!= 'A') {
771 pr_err("--update in Manage mode only allowed with --re-add.\n");
775 pr_err("Can only update one aspect of superblock, both %s and %s given.\n",
776 map_num(update_options
, c
.update
), optarg
);
779 c
.update
= map_name(update_options
, optarg
);
780 if (c
.update
!= UOPT_DEVICESIZE
&&
781 c
.update
!= UOPT_BBL
&&
782 c
.update
!= UOPT_NO_BBL
&&
783 c
.update
!= UOPT_FORCE_NO_BBL
) {
784 pr_err("only 'devicesize', 'bbl', 'no-bbl', and 'force-no-bbl' can be updated with --re-add\n");
789 case O(INCREMENTAL
,NoDegraded
):
790 pr_err("--no-degraded is deprecated in Incremental mode\n");
791 case O(ASSEMBLE
,NoDegraded
): /* --no-degraded */
792 c
.runstop
= -1; /* --stop isn't allowed for --assemble,
793 * so we overload slightly */
796 case O(ASSEMBLE
,'c'):
797 case O(ASSEMBLE
,ConfigFile
):
798 case O(INCREMENTAL
, 'c'):
799 case O(INCREMENTAL
, ConfigFile
):
801 case O(MISC
, ConfigFile
):
803 case O(MONITOR
,ConfigFile
):
804 case O(CREATE
,ConfigFile
):
806 pr_err("configfile cannot be set twice. Second value is %s.\n", optarg
);
810 set_conffile(configfile
);
811 /* FIXME possibly check that config file exists. Even parse it */
813 case O(ASSEMBLE
,'s'): /* scan */
816 case O(INCREMENTAL
,'s'):
820 case O(MONITOR
,'m'): /* mail address */
821 case O(MONITOR
,EMail
):
823 pr_err("only specify one mailaddress. %s ignored.\n",
829 case O(MONITOR
,'p'): /* alert program */
830 case O(MONITOR
,ProgramOpt
): /* alert program */
832 pr_err("only specify one alter program. %s ignored.\n",
838 case O(MONITOR
,'r'): /* rebuild increments */
839 case O(MONITOR
,Increment
):
840 if (parse_num(&increments
, optarg
) != 0
841 || increments
> 99 || increments
< 1) {
842 pr_err("please specify positive integer between 1 and 99 as rebuild increments.\n");
847 case O(MONITOR
,'d'): /* delay in seconds */
849 case O(BUILD
,'d'): /* delay for bitmap updates */
852 pr_err("only specify delay once. %s ignored.\n", optarg
);
853 else if (parse_num(&c
.delay
, optarg
) != 0 || c
.delay
< 1) {
854 pr_err("invalid delay: %s\n", optarg
);
858 case O(MONITOR
,'f'): /* daemonise */
859 case O(MONITOR
,Fork
):
862 case O(MONITOR
,'i'): /* pid */
864 pr_err("only specify one pid file. %s ignored.\n",
869 case O(MONITOR
,'1'): /* oneshot */
873 case O(MONITOR
,'t'): /* test */
876 case O(MONITOR
,'y'): /* log messages to syslog */
877 openlog("mdadm", LOG_PID
, SYSLOG_FACILITY
);
880 case O(MONITOR
, NoSharing
):
884 /* now the general management options. Some are applicable
885 * to other modes. None have arguments.
890 case O(MANAGE
,Add
): /* add a drive */
893 case O(MANAGE
,AddSpare
): /* add drive - never re-add */
896 case O(MANAGE
,AddJournal
): /* add journal */
897 if (s
.journaldisks
&& (s
.level
< 4 || s
.level
> 6)) {
898 pr_err("--add-journal is only supported for RAID level 4/5/6.\n");
903 case O(MANAGE
,ReAdd
):
906 case O(MANAGE
,'r'): /* remove a drive */
907 case O(MANAGE
,Remove
):
910 case O(MANAGE
,'f'): /* set faulty */
912 case O(INCREMENTAL
,'f'):
913 case O(INCREMENTAL
,Remove
):
914 case O(INCREMENTAL
,Fail
): /* r for incremental is taken, use f
915 * even though we will both fail and
916 * remove the device */
919 case O(MANAGE
, ClusterConfirm
):
922 case O(MANAGE
,Replace
):
923 /* Mark these devices for replacement */
927 /* These are the replacements to use */
928 if (devmode
!= 'R') {
929 pr_err("--with must follow --replace\n");
934 case O(INCREMENTAL
,'R'):
936 case O(ASSEMBLE
,'R'):
938 case O(CREATE
,'R'): /* Run the array */
940 pr_err("Cannot both Stop and Run an array\n");
947 pr_err("Cannot both Run and Stop an array\n");
959 case O(MISC
,KillOpt
):
963 case O(MISC
, ExamineBB
):
967 case O(MISC
, WaitOpt
):
968 case O(MISC
, Waitclean
):
969 case O(MISC
, DetailPlatform
):
970 case O(MISC
, KillSubarray
):
971 case O(MISC
, UpdateSubarray
):
973 case O(MISC
, Restore
):
974 case O(MISC
,Action
):
975 if (opt
== KillSubarray
|| opt
== UpdateSubarray
) {
977 pr_err("subarray can only be specified once\n");
984 pr_err("Only one --action can be specified\n");
987 if (strcmp(optarg
, "idle") == 0 ||
988 strcmp(optarg
, "frozen") == 0 ||
989 strcmp(optarg
, "check") == 0 ||
990 strcmp(optarg
, "repair") == 0)
993 pr_err("action must be one of idle, frozen, check, repair\n");
997 if (devmode
&& devmode
!= opt
&&
999 (opt
== 'E' && devmode
!= 'Q'))) {
1000 pr_err("--examine/-E cannot be given with ");
1001 if (devmode
== 'E') {
1002 if (option_index
>= 0)
1003 fprintf(stderr
, "--%s\n",
1004 long_options
[option_index
].name
);
1006 fprintf(stderr
, "-%c\n", opt
);
1007 } else if (isalpha(devmode
))
1008 fprintf(stderr
, "-%c\n", devmode
);
1010 fprintf(stderr
, "previous option\n");
1014 if (opt
== Dump
|| opt
== Restore
) {
1015 if (dump_directory
!= NULL
) {
1016 pr_err("dump/restore directory specified twice: %s and %s\n",
1017 dump_directory
, optarg
);
1020 dump_directory
= optarg
;
1023 case O(MISC
, UdevRules
):
1024 if (devmode
&& devmode
!= opt
) {
1025 pr_err("--udev-rules must be the only option.\n");
1028 pr_err("only specify one udev rule filename. %s ignored.\n",
1031 udev_filename
= optarg
;
1039 case O(MISC
, Sparc22
):
1040 if (devmode
!= 'E') {
1041 pr_err("--sparc2.2 only allowed with --examine\n");
1047 case O(ASSEMBLE
,'b'): /* here we simply set the bitmap file */
1048 case O(ASSEMBLE
,Bitmap
):
1050 pr_err("bitmap file needed with -b in --assemble mode\n");
1053 if (strcmp(optarg
, "internal") == 0 ||
1054 strcmp(optarg
, "clustered") == 0) {
1055 pr_err("no need to specify --bitmap when assembling"
1056 " arrays with internal or clustered bitmap\n");
1059 bitmap_fd
= open(optarg
, O_RDWR
);
1060 if (!*optarg
|| bitmap_fd
< 0) {
1061 pr_err("cannot open bitmap file %s: %s\n", optarg
, strerror(errno
));
1064 ident
.bitmap_fd
= bitmap_fd
; /* for Assemble */
1067 case O(ASSEMBLE
, BackupFile
):
1068 case O(GROW
, BackupFile
):
1069 /* Specify a file into which grow might place a backup,
1070 * or from which assemble might recover a backup
1072 if (c
.backup_file
) {
1073 pr_err("backup file already specified, rejecting %s\n", optarg
);
1076 c
.backup_file
= optarg
;
1079 case O(GROW
, Continue
):
1080 /* Continue interrupted grow
1084 case O(ASSEMBLE
, InvalidBackup
):
1085 /* Acknowledge that the backupfile is invalid, but ask
1086 * to continue anyway
1088 c
.invalid_backup
= 1;
1092 case O(BUILD
,Bitmap
):
1094 case O(CREATE
,Bitmap
): /* here we create the bitmap */
1096 case O(GROW
,Bitmap
):
1097 if (s
.bitmap_file
) {
1098 pr_err("bitmap cannot be set twice. Second value: %s.\n", optarg
);
1101 if (strcmp(optarg
, "internal") == 0 ||
1102 strcmp(optarg
, "none") == 0 ||
1103 strchr(optarg
, '/') != NULL
) {
1104 s
.bitmap_file
= optarg
;
1107 if (strcmp(optarg
, "clustered") == 0) {
1108 s
.bitmap_file
= optarg
;
1109 /* Set the default number of cluster nodes
1110 * to 4 if not already set by user
1117 pr_err("bitmap file must contain a '/', or be 'internal', or be 'clustered', or 'none'\n"
1118 " not '%s'\n", optarg
);
1121 case O(GROW
,BitmapChunk
):
1122 case O(BUILD
,BitmapChunk
):
1123 case O(CREATE
,BitmapChunk
): /* bitmap chunksize */
1124 s
.bitmap_chunk
= parse_size(optarg
);
1125 if (s
.bitmap_chunk
== 0 ||
1126 s
.bitmap_chunk
== INVALID_SECTORS
||
1127 s
.bitmap_chunk
& (s
.bitmap_chunk
- 1)) {
1128 pr_err("invalid bitmap chunksize: %s\n",
1132 s
.bitmap_chunk
= s
.bitmap_chunk
* 512;
1135 case O(GROW
, WriteBehind
):
1136 case O(BUILD
, WriteBehind
):
1137 case O(CREATE
, WriteBehind
):
1138 s
.write_behind
= DEFAULT_MAX_WRITE_BEHIND
;
1140 (parse_num(&s
.write_behind
, optarg
) != 0 ||
1141 s
.write_behind
< 0 || s
.write_behind
> 16383)) {
1142 pr_err("Invalid value for maximum outstanding write-behind writes: %s.\n\tMust be between 0 and 16383.\n",
1147 case O(INCREMENTAL
, 'r'):
1148 case O(INCREMENTAL
, RebuildMapOpt
):
1151 case O(INCREMENTAL
, IncrementalPath
):
1152 remove_path
= optarg
;
1154 case O(CREATE
, WriteJournal
):
1155 if (s
.journaldisks
) {
1156 pr_err("Please specify only one journal device for the array.\n");
1157 pr_err("Ignoring --write-journal %s...\n", optarg
);
1160 dv
= xmalloc(sizeof(*dv
));
1161 dv
->devname
= optarg
;
1162 dv
->disposition
= 'j'; /* WriteJournal */
1166 devlistend
= &dv
->next
;
1171 case O(CREATE
, 'k'):
1173 s
.consistency_policy
= map_name(consistency_policies
,
1175 if (s
.consistency_policy
< CONSISTENCY_POLICY_RESYNC
) {
1176 pr_err("Invalid consistency policy: %s\n",
1182 /* We have now processed all the valid options. Anything else is
1185 if (option_index
> 0)
1186 pr_err(":option --%s not valid in %s mode\n",
1187 long_options
[option_index
].name
,
1188 map_num_s(modes
, mode
));
1190 pr_err("option -%c not valid in %s mode\n",
1191 opt
, map_num_s(modes
, mode
));
1198 if (print_help
== 2)
1199 help_text
= OptionHelp
;
1201 help_text
= mode_help
[mode
];
1202 if (help_text
== NULL
)
1204 fputs(help_text
,stdout
);
1208 if (s
.journaldisks
) {
1209 if (s
.level
< 4 || s
.level
> 6) {
1210 pr_err("--write-journal is only supported for RAID level 4/5/6.\n");
1213 if (s
.consistency_policy
!= CONSISTENCY_POLICY_UNKNOWN
&&
1214 s
.consistency_policy
!= CONSISTENCY_POLICY_JOURNAL
) {
1215 pr_err("--write-journal is not supported with consistency policy: %s\n",
1216 map_num_s(consistency_policies
, s
.consistency_policy
));
1221 if (mode
== CREATE
&&
1222 s
.consistency_policy
!= CONSISTENCY_POLICY_UNKNOWN
) {
1224 pr_err("--consistency-policy not meaningful with level %s.\n",
1225 map_num_s(pers
, s
.level
));
1227 } else if (s
.consistency_policy
== CONSISTENCY_POLICY_JOURNAL
&&
1229 pr_err("--write-journal is required for consistency policy: %s\n",
1230 map_num_s(consistency_policies
, s
.consistency_policy
));
1232 } else if (s
.consistency_policy
== CONSISTENCY_POLICY_PPL
&&
1234 pr_err("PPL consistency policy is only supported for RAID level 5.\n");
1236 } else if (s
.consistency_policy
== CONSISTENCY_POLICY_BITMAP
&&
1238 strcmp(s
.bitmap_file
, "none") == 0)) {
1239 pr_err("--bitmap is required for consistency policy: %s\n",
1240 map_num_s(consistency_policies
, s
.consistency_policy
));
1242 } else if (s
.bitmap_file
&&
1243 strcmp(s
.bitmap_file
, "none") != 0 &&
1244 s
.consistency_policy
!= CONSISTENCY_POLICY_BITMAP
&&
1245 s
.consistency_policy
!= CONSISTENCY_POLICY_JOURNAL
) {
1246 pr_err("--bitmap is not compatible with consistency policy: %s\n",
1247 map_num_s(consistency_policies
, s
.consistency_policy
));
1252 if (s
.write_zeroes
&& !s
.assume_clean
) {
1253 pr_info("Disk zeroing requested, setting --assume-clean to skip resync\n");
1257 if (!mode
&& devs_found
) {
1260 if (devlist
->disposition
== 0)
1261 devlist
->disposition
= devmode
;
1264 fputs(Usage
, stderr
);
1268 /* Ok, got the option parsing out of the way
1269 * hopefully it's mostly right but there might be some stuff
1272 * That is mostly checked in the per-mode stuff but...
1274 * For @,B,C and A without -s, the first device listed must be
1275 * an md device. We check that here and open it.
1278 if (mode
== MANAGE
|| mode
== BUILD
|| mode
== CREATE
||
1279 mode
== GROW
|| (mode
== ASSEMBLE
&& ! c
.scan
)) {
1283 if (devs_found
< 1) {
1284 pr_err("an md device must be given in this mode\n");
1287 if (ident_set_devname(&ident
, devlist
->devname
) != MDADM_STATUS_SUCCESS
)
1290 if ((int)ident
.super_minor
== -2 && c
.autof
) {
1291 pr_err("--super-minor=dev is incompatible with --auto\n");
1294 if (mode
== MANAGE
|| mode
== GROW
) {
1295 mdfd
= open_mddev(ident
.devname
, 1);
1299 ret
= fstat(mdfd
, &stb
);
1301 pr_err("fstat failed on %s.\n", ident
.devname
);
1305 ret
= stat(ident
.devname
, &stb
);
1306 if (ident
.super_minor
== -2 && ret
!= 0) {
1307 pr_err("--super-minor=dev given, and listed device %s doesn't exist.\n",
1312 if (!ret
&& !stat_is_md_dev(&stb
)) {
1313 pr_err("device %s exists but is not an md array.\n", ident
.devname
);
1317 if (ident
.super_minor
== -2)
1318 ident
.super_minor
= minor(stb
.st_rdev
);
1322 if (s
.raiddisks
== 1 && !c
.force
&& s
.level
!= LEVEL_FAULTY
) {
1323 pr_err("'1' is an unusual number of drives for an array, so it is probably\n"
1324 " a mistake. If you really mean it you will need to specify --force before\n"
1325 " setting the number of drives.\n");
1330 if (c
.homehost
== NULL
&& c
.require_homehost
)
1331 c
.homehost
= conf_get_homehost(&c
.require_homehost
);
1332 if (c
.homehost
== NULL
|| strcasecmp(c
.homehost
, "<system>") == 0) {
1333 if (s_gethostname(sys_hostname
, sizeof(sys_hostname
)) == 0) {
1334 c
.homehost
= sys_hostname
;
1338 (!c
.homehost
[0] || strcasecmp(c
.homehost
, "<none>") == 0)) {
1340 c
.require_homehost
= 0;
1345 set_hooks(); /* set hooks from libs */
1347 if (c
.homecluster
== NULL
&& (c
.nodes
> 0)) {
1348 c
.homecluster
= conf_get_homecluster();
1349 if (c
.homecluster
== NULL
)
1350 rv
= get_cluster_name(&c
.homecluster
);
1352 pr_err("The md can't get cluster name\n");
1357 if (c
.update
&& c
.update
== UOPT_NODES
&& c
.nodes
== 0) {
1358 pr_err("Please specify nodes number with --nodes\n");
1362 if (c
.backup_file
&& s
.data_offset
!= INVALID_SECTORS
) {
1363 pr_err("--backup-file and --data-offset are incompatible\n");
1367 if ((mode
== MISC
&& devmode
== 'E') ||
1368 (mode
== MONITOR
&& spare_sharing
== 0))
1369 /* Anyone may try this */;
1370 else if (geteuid() != 0) {
1371 pr_err("must be super-user to perform this action\n");
1375 ident
.autof
= c
.autof
;
1377 if (c
.scan
&& c
.verbose
< 2)
1378 /* --scan implied --brief unless -vv */
1381 if (mode
== CREATE
) {
1382 if (s
.bitmap_file
&& strcmp(s
.bitmap_file
, "clustered") == 0) {
1383 locked
= cluster_get_dlmlock();
1387 } else if (mode
== MANAGE
|| mode
== GROW
|| mode
== INCREMENTAL
) {
1388 if (!md_get_array_info(mdfd
, &array
) && (devmode
!= 'c')) {
1389 if (array
.state
& (1 << MD_SB_CLUSTERED
)) {
1390 locked
= cluster_get_dlmlock();
1399 /* readonly, add/remove, readwrite, runstop */
1401 rv
= Manage_ro(ident
.devname
, mdfd
, c
.readonly
);
1402 if (!rv
&& devs_found
> 1)
1403 rv
= Manage_subdevs(ident
.devname
, mdfd
,
1404 devlist
->next
, c
.verbose
,
1405 c
.test
, c
.update
, c
.force
);
1406 if (!rv
&& c
.readonly
< 0)
1407 rv
= Manage_ro(ident
.devname
, mdfd
, c
.readonly
);
1408 if (!rv
&& c
.runstop
> 0)
1409 rv
= Manage_run(ident
.devname
, mdfd
, &c
);
1410 if (!rv
&& c
.runstop
< 0)
1411 rv
= Manage_stop(ident
.devname
, mdfd
, c
.verbose
, 0);
1414 if (!c
.scan
&& c
.runstop
== -1) {
1415 pr_err("--no-degraded not meaningful without a --scan assembly.\n");
1417 } else if (devs_found
== 1 && ident
.uuid_set
== 0 &&
1418 ident
.super_minor
== UnSet
&& ident
.name
[0] == 0 &&
1420 /* Only a device has been given, so get details from config file */
1421 struct mddev_ident
*array_ident
= conf_get_ident(ident
.devname
);
1422 if (array_ident
== NULL
) {
1423 pr_err("%s not identified in config file.\n", ident
.devname
);
1428 if (array_ident
->autof
== 0)
1429 array_ident
->autof
= c
.autof
;
1430 rv
|= Assemble(ss
, ident
.devname
, array_ident
, NULL
, &c
);
1433 rv
= Assemble(ss
, ident
.devname
, &ident
, devlist
->next
, &c
);
1434 else if (devs_found
> 0) {
1435 if (c
.update
&& devs_found
> 1) {
1436 pr_err("can only update a single array at a time\n");
1439 if (c
.backup_file
&& devs_found
> 1) {
1440 pr_err("can only assemble a single array when providing a backup file.\n");
1443 for (dv
= devlist
; dv
; dv
= dv
->next
) {
1444 struct mddev_ident
*array_ident
= conf_get_ident(dv
->devname
);
1445 if (array_ident
== NULL
) {
1446 pr_err("%s not identified in config file.\n",
1451 if (array_ident
->autof
== 0)
1452 array_ident
->autof
= c
.autof
;
1453 rv
|= Assemble(ss
, dv
->devname
, array_ident
,
1458 pr_err("--update not meaningful with a --scan assembly.\n");
1461 if (c
.backup_file
) {
1462 pr_err("--backup_file not meaningful with a --scan assembly.\n");
1465 rv
= scan_assemble(ss
, &c
, &ident
);
1471 c
.delay
= DEFAULT_BITMAP_DELAY
;
1472 if (s
.write_behind
&& !s
.bitmap_file
) {
1473 pr_err("write-behind mode requires a bitmap.\n");
1477 if (s
.raiddisks
== 0) {
1478 pr_err("no raid-devices specified.\n");
1483 if (s
.bitmap_file
) {
1484 if (strcmp(s
.bitmap_file
, "internal") == 0 ||
1485 strcmp(s
.bitmap_file
, "clustered") == 0) {
1486 pr_err("'internal' and 'clustered' bitmaps not supported with --build\n");
1491 rv
= Build(&ident
, devlist
->next
, &s
, &c
);
1495 c
.delay
= DEFAULT_BITMAP_DELAY
;
1498 if (!s
.bitmap_file
||
1499 strcmp(s
.bitmap_file
, "clustered") != 0) {
1500 pr_err("--nodes argument only compatible with --bitmap=clustered\n");
1505 if (s
.level
!= 1 && s
.level
!= 10) {
1506 pr_err("--bitmap=clustered is currently supported with raid1/10 only\n");
1510 if (s
.level
== 10 && !(is_near_layout_10(s
.layout
) || s
.layout
== UnSet
)) {
1511 pr_err("only near layout is supported with clustered raid10\n");
1517 if (s
.write_behind
&& !s
.bitmap_file
) {
1518 pr_err("write-behind mode requires a bitmap.\n");
1522 if (s
.raiddisks
== 0) {
1523 pr_err("no raid-devices specified.\n");
1528 rv
= Create(ss
, &ident
, devs_found
- 1, devlist
->next
, &s
, &c
);
1531 if (devmode
== 'E') {
1532 if (devlist
== NULL
&& !c
.scan
) {
1533 pr_err("No devices to examine\n");
1536 if (devlist
== NULL
)
1537 devlist
= conf_get_devs();
1538 if (devlist
== NULL
) {
1539 pr_err("No devices listed in %s\n", configfile
?configfile
:DefaultConfFile
);
1542 rv
= Examine(devlist
, &c
, ss
);
1543 } else if (devmode
== DetailPlatform
) {
1544 rv
= Detail_Platform(ss
? ss
->ss
: NULL
, ss
? c
.scan
: 1,
1545 c
.verbose
, c
.export
,
1546 devlist
? devlist
->devname
: NULL
);
1547 } else if (devlist
== NULL
) {
1548 if (devmode
== 'S' && c
.scan
)
1549 rv
= stop_scan(c
.verbose
);
1550 else if ((devmode
== 'D' || devmode
== Waitclean
) &&
1552 rv
= misc_scan(devmode
, &c
);
1553 else if (devmode
== UdevRules
)
1554 rv
= Write_rules(udev_filename
);
1556 pr_err("No devices given.\n");
1560 rv
= misc_list(devlist
, &ident
, dump_directory
, ss
, &c
);
1563 if (!devlist
&& !c
.scan
) {
1564 pr_err("Cannot monitor: need --scan or at least one device\n");
1568 if (pidfile
&& !daemonise
) {
1569 pr_err("Cannot write a pid file when not in daemon mode\n");
1574 c
.delay
= conf_get_monitor_delay();
1578 rv
= Monitor(devlist
, mailaddr
, program
,
1579 &c
, daemonise
, oneshot
,
1580 dosyslog
, pidfile
, increments
,
1585 if (array_size
> 0) {
1586 /* alway impose array size first, independent of
1588 * Do not allow level or raid_disks changes at the
1589 * same time as that can be irreversibly destructive.
1593 if (s
.raiddisks
|| s
.level
!= UnSet
) {
1594 pr_err("cannot change array size in same operation as changing raiddisks or level.\n"
1595 " Change size first, then check that data is still intact.\n");
1599 if (sysfs_init(&sra
, mdfd
, NULL
)) {
1603 if (array_size
== MAX_SIZE
)
1604 err
= sysfs_set_str(&sra
, NULL
, "array_size", "default");
1606 err
= sysfs_set_num(&sra
, NULL
, "array_size", array_size
/ 2);
1609 pr_err("--array-size setting is too large.\n");
1611 pr_err("current kernel does not support setting --array-size\n");
1616 if (devs_found
> 1 && s
.raiddisks
== 0 && s
.level
== UnSet
) {
1618 if (s
.size
> 0 || s
.chunk
||
1619 s
.layout_str
|| s
.bitmap_file
) {
1620 pr_err("--add cannot be used with other geometry changes in --grow mode\n");
1624 for (dv
= devlist
->next
; dv
; dv
= dv
->next
) {
1625 rv
= Grow_Add_device(ident
.devname
, mdfd
, dv
->devname
);
1629 } else if (s
.bitmap_file
) {
1630 if (s
.size
> 0 || s
.raiddisks
|| s
.chunk
||
1631 s
.layout_str
|| devs_found
> 1) {
1632 pr_err("--bitmap changes cannot be used with other geometry changes in --grow mode\n");
1637 c
.delay
= DEFAULT_BITMAP_DELAY
;
1638 rv
= Grow_addbitmap(ident
.devname
, mdfd
, &c
, &s
);
1639 } else if (grow_continue
)
1640 rv
= Grow_continue_command(ident
.devname
, mdfd
, c
.backup_file
, c
.verbose
);
1641 else if (s
.size
> 0 || s
.raiddisks
|| s
.layout_str
||
1642 s
.chunk
!= 0 || s
.level
!= UnSet
||
1643 s
.data_offset
!= INVALID_SECTORS
) {
1644 rv
= Grow_reshape(ident
.devname
, mdfd
, devlist
->next
, &c
, &s
);
1645 } else if (s
.consistency_policy
!= CONSISTENCY_POLICY_UNKNOWN
) {
1646 rv
= Grow_consistency_policy(ident
.devname
, mdfd
, &c
, &s
);
1647 } else if (array_size
== 0)
1648 pr_err("no changes to --grow\n");
1657 pr_err("In --incremental mode, a device cannot be given with --scan.\n");
1660 if (c
.runstop
<= 0) {
1661 pr_err("--incremental --scan meaningless without --run.\n");
1664 if (devmode
== 'f') {
1665 pr_err("--incremental --scan --fail not supported.\n");
1668 rv
= IncrementalScan(&c
, NULL
);
1671 if (!rebuild_map
&& !c
.scan
) {
1672 pr_err("--incremental requires a device.\n");
1677 if (devmode
== 'f') {
1678 if (devlist
->next
) {
1679 pr_err("'--incremental --fail' can only handle one device.\n");
1683 rv
= IncrementalRemove(devlist
->devname
, remove_path
,
1686 rv
= Incremental(devlist
, &c
, ss
);
1693 ss
->ss
->free_super(ss
);
1697 cluster_release_dlmlock();
1702 static int scan_assemble(struct supertype
*ss
,
1704 struct mddev_ident
*ident
)
1706 struct mddev_ident
*a
, *array_list
= conf_get_ident(NULL
);
1707 struct mddev_dev
*devlist
= conf_get_devs();
1708 struct map_ent
*map
= NULL
;
1711 int failures
, successes
;
1713 if (conf_verify_devnames(array_list
)) {
1714 pr_err("Duplicate MD device names in conf file were found.\n");
1717 if (devlist
== NULL
) {
1718 pr_err("No devices listed in conf file were found.\n");
1721 for (a
= array_list
; a
; a
= a
->next
) {
1724 a
->autof
= c
->autof
;
1727 pr_err("failed to get exclusive lock on mapfile\n");
1732 for (a
= array_list
; a
; a
= a
->next
) {
1736 if (a
->devname
&& is_devname_ignore(a
->devname
) == true)
1739 r
= Assemble(ss
, a
->devname
,
1749 } while (failures
&& successes
);
1750 if (c
->homehost
&& cnt
== 0) {
1751 /* Maybe we can auto-assemble something.
1752 * Repeatedly call Assemble in auto-assemble mode
1757 ident
->autof
= c
->autof
;
1759 struct mddev_dev
*devlist
= conf_get_devs();
1762 rv2
= Assemble(ss
, NULL
,
1770 /* Incase there are stacked devices, we need to go around again */
1772 if (cnt
== 0 && rv
== 0) {
1773 pr_err("No arrays found in config file or automatically\n");
1777 } else if (cnt
== 0 && rv
== 0) {
1778 pr_err("No arrays found in config file\n");
1785 static int misc_scan(char devmode
, struct context
*c
)
1787 /* apply --detail or --wait-clean to
1788 * all devices in /proc/mdstat
1790 struct mdstat_ent
*ms
= mdstat_read(0, 1);
1791 struct mdstat_ent
*e
;
1792 struct map_ent
*map
= NULL
;
1796 for (members
= 0; members
<= 1; members
++) {
1797 for (e
= ms
; e
; e
= e
->next
) {
1801 int member
= e
->metadata_version
&&
1802 strncmp(e
->metadata_version
,
1803 "external:/", 10) == 0;
1804 if (members
!= member
)
1806 me
= map_by_devnm(&map
, e
->devnm
);
1807 if (me
&& me
->path
&& strcmp(me
->path
, "/unknown") != 0)
1809 if (name
== NULL
|| stat(name
, &stb
) != 0)
1810 name
= get_md_name(e
->devnm
);
1813 pr_err("cannot find device file for %s\n",
1818 rv
|= Detail(name
, c
);
1820 rv
|= WaitClean(name
, c
->verbose
);
1830 static int stop_scan(int verbose
)
1832 /* apply --stop to all devices in /proc/mdstat */
1833 /* Due to possible stacking of devices, repeat until
1834 * nothing more can be stopped
1836 int progress
= 1, err
;
1840 struct mdstat_ent
*ms
= mdstat_read(0, 0);
1841 struct mdstat_ent
*e
;
1843 if (!progress
) last
= 1;
1844 progress
= 0; err
= 0;
1845 for (e
= ms
; e
; e
= e
->next
) {
1846 char *name
= get_md_name(e
->devnm
);
1850 pr_err("cannot find device file for %s\n",
1854 mdfd
= open_mddev(name
, 1);
1856 if (Manage_stop(name
, mdfd
, verbose
, !last
))
1866 } while (!last
&& err
);
1872 static int misc_list(struct mddev_dev
*devlist
,
1873 struct mddev_ident
*ident
,
1874 char *dump_directory
,
1875 struct supertype
*ss
, struct context
*c
)
1877 struct mddev_dev
*dv
;
1880 for (dv
= devlist
; dv
; dv
= (rv
& 16) ? NULL
: dv
->next
) {
1883 switch(dv
->disposition
) {
1885 rv
|= Detail(dv
->devname
, c
);
1887 case KillOpt
: /* Zero superblock */
1889 rv
|= Kill(dv
->devname
, ss
, c
->force
, c
->verbose
,0);
1893 rv
|= Kill(dv
->devname
, NULL
, c
->force
, v
, 0);
1900 rv
|= Query(dv
->devname
);
1903 rv
|= ExamineBitmap(dv
->devname
, c
->brief
, ss
);
1906 rv
|= ExamineBadblocks(dv
->devname
, c
->brief
, ss
);
1910 rv
|= Wait(dv
->devname
);
1913 rv
|= WaitClean(dv
->devname
, c
->verbose
);
1916 rv
|= Kill_subarray(dv
->devname
, c
->subarray
, c
->verbose
);
1918 case UpdateSubarray
:
1920 pr_err("-U/--update must be specified with --update-subarray\n");
1924 rv
|= Update_subarray(dv
->devname
, c
->subarray
,
1925 c
->update
, ident
, c
->verbose
);
1928 rv
|= Dump_metadata(dv
->devname
, dump_directory
, c
, ss
);
1931 rv
|= Restore_metadata(dv
->devname
, dump_directory
, c
, ss
,
1932 (dv
== devlist
&& dv
->next
== NULL
));
1935 rv
|= SetAction(dv
->devname
, c
->action
);
1939 if (dv
->devname
[0] != '/')
1940 mdfd
= open_dev(dv
->devname
);
1941 if (dv
->devname
[0] == '/' || mdfd
< 0)
1942 mdfd
= open_mddev(dv
->devname
, 1);
1945 switch(dv
->disposition
) {
1948 rv
|= Manage_run(dv
->devname
, mdfd
, c
);
1952 pr_err("--stop not meaningful with both a --scan assembly and a device name.\n");
1956 rv
|= Manage_stop(dv
->devname
, mdfd
, c
->verbose
, 0);
1959 rv
|= Manage_ro(dv
->devname
, mdfd
, 1);
1962 rv
|= Manage_ro(dv
->devname
, mdfd
, -1);
1972 int SetAction(char *dev
, char *action
)
1974 int fd
= open(dev
, O_RDONLY
);
1979 pr_err("Couldn't open %s: %s\n", dev
, strerror(errno
));
1982 retval
= sysfs_init(&mdi
, fd
, NULL
);
1985 pr_err("%s is no an md array\n", dev
);
1989 if (sysfs_set_str(&mdi
, NULL
, "sync_action", action
) < 0) {
1990 pr_err("Count not set action for %s to %s: %s\n",
1991 dev
, action
, strerror(errno
));