]>
git.ipfire.org Git - thirdparty/mdadm.git/blob - Create.c
2 * mdadm - manage Linux "md" devices aka RAID arrays.
4 * Copyright (C) 2001-2009 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>
30 static int default_layout(struct supertype
*st
, int level
, int verbose
)
34 if (st
&& st
->ss
->default_geometry
)
35 st
->ss
->default_geometry(st
, &level
, &layout
, NULL
);
39 default: /* no layout */
43 layout
= 0x102; /* near=2, far=1 */
45 pr_err("layout defaults to n2\n");
49 layout
= map_name(r5layout
, "default");
51 pr_err("layout defaults to %s\n", map_num(r5layout
, layout
));
54 layout
= map_name(faultylayout
, "default");
57 pr_err("layout defaults to %s\n", map_num(faultylayout
, layout
));
65 int Create(struct supertype
*st
, char *mddev
,
66 char *name
, int *uuid
,
67 int subdevs
, struct mddev_dev
*devlist
,
72 * Create a new raid array.
74 * First check that necessary details are available
75 * (i.e. level, raid-disks)
77 * Then check each disk to see what might be on it
78 * and report anything interesting.
80 * If anything looks odd, and runstop not set,
83 * SET_ARRAY_INFO and ADD_NEW_DISK, and
84 * if runstop==run, or raiddisks disks were used,
88 unsigned long long minsize
=0, maxsize
=0;
95 int first_missing
= subdevs
* 2;
96 int second_missing
= subdevs
* 2;
97 int missing_disks
= 0;
98 int insert_point
= subdevs
* 2; /* where to insert a missing drive */
104 int have_container
= 0;
105 int container_fd
= -1;
107 unsigned long long bitmapsize
;
108 struct mdinfo info
, *infos
;
110 int do_default_layout
= 0;
111 int do_default_chunk
= 0;
112 unsigned long safe_mode_delay
= 0;
113 char chosen_name
[1024];
114 struct map_ent
*map
= NULL
;
115 unsigned long long newsize
;
117 int major_num
= BITMAP_MAJOR_HI
;
119 memset(&info
, 0, sizeof(info
));
120 if (s
->level
== UnSet
&& st
&& st
->ss
->default_geometry
)
121 st
->ss
->default_geometry(st
, &s
->level
, NULL
, NULL
);
122 if (s
->level
== UnSet
) {
123 pr_err("a RAID level is needed to create an array.\n");
126 if (s
->raiddisks
< 4 && s
->level
== 6) {
127 pr_err("at least 4 raid-devices needed for level 6\n");
130 if (s
->raiddisks
> 256 && s
->level
== 6) {
131 pr_err("no more than 256 raid-devices supported for level 6\n");
134 if (s
->raiddisks
< 2 && s
->level
>= 4) {
135 pr_err("at least 2 raid-devices needed for level 4 or 5\n");
138 if (s
->level
<= 0 && s
->sparedisks
) {
139 pr_err("This level does not support spare devices\n");
143 if (subdevs
== 1 && strcmp(devlist
->devname
, "missing") != 0) {
144 /* If given a single device, it might be a container, and we can
145 * extract a device list from there
147 mdu_array_info_t inf
;
150 memset(&inf
, 0, sizeof(inf
));
151 fd
= open(devlist
->devname
, O_RDONLY
);
153 ioctl(fd
, GET_ARRAY_INFO
, &inf
) == 0 &&
154 inf
.raid_disks
== 0) {
155 /* yep, looks like a container */
157 rv
= st
->ss
->load_container(st
, fd
,
162 st
= super_by_fd(fd
, NULL
);
163 if (st
&& !(rv
= st
->ss
->
164 load_container(st
, fd
,
170 if (have_container
) {
171 subdevs
= s
->raiddisks
;
172 first_missing
= subdevs
* 2;
173 second_missing
= subdevs
* 2;
174 insert_point
= subdevs
* 2;
180 if (st
&& st
->ss
->external
&& s
->sparedisks
) {
181 pr_err("This metadata type does not support "
182 "spare disks at create time\n");
185 if (subdevs
> s
->raiddisks
+s
->sparedisks
) {
186 pr_err("You have listed more devices (%d) than are in the array(%d)!\n", subdevs
, s
->raiddisks
+s
->sparedisks
);
189 if (!have_container
&& subdevs
< s
->raiddisks
+s
->sparedisks
) {
190 pr_err("You haven't given enough devices (real or missing) to create this array\n");
193 if (s
->bitmap_file
&& s
->level
<= 0) {
194 pr_err("bitmaps not meaningful with level %s\n",
195 map_num(pers
, s
->level
)?:"given");
199 /* now set some defaults */
202 if (s
->layout
== UnSet
) {
203 do_default_layout
= 1;
204 s
->layout
= default_layout(st
, s
->level
, c
->verbose
);
208 /* check layout fits in array*/
209 if ((s
->layout
&255) * ((s
->layout
>>8)&255) > s
->raiddisks
) {
210 pr_err("that layout requires at least %d devices\n",
211 (s
->layout
&255) * ((s
->layout
>>8)&255));
221 if (s
->chunk
== 0 || s
->chunk
== UnSet
) {
223 do_default_chunk
= 1;
224 /* chunk will be set later */
228 /* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */
229 if (get_linux_version() < 2006016 && s
->chunk
== 0) {
232 pr_err("chunk size defaults to 64K\n");
237 case LEVEL_MULTIPATH
:
238 case LEVEL_CONTAINER
:
242 pr_err("chunk size ignored for this level\n");
246 pr_err("unknown level %d\n", s
->level
);
249 if (s
->size
== MAX_SIZE
)
250 /* use '0' to mean 'max' now... */
252 if (s
->size
&& s
->chunk
&& s
->chunk
!= UnSet
)
253 s
->size
&= ~(unsigned long long)(s
->chunk
- 1);
254 newsize
= s
->size
* 2;
255 if (st
&& ! st
->ss
->validate_geometry(st
, s
->level
, s
->layout
, s
->raiddisks
,
256 &s
->chunk
, s
->size
*2, NULL
, &newsize
, c
->verbose
>=0))
259 if (s
->chunk
&& s
->chunk
!= UnSet
) {
260 newsize
&= ~(unsigned long long)(s
->chunk
*2 - 1);
261 if (do_default_chunk
) {
262 /* default chunk was just set */
265 "defaults to %dK\n", s
->chunk
);
266 s
->size
&= ~(unsigned long long)(s
->chunk
- 1);
267 do_default_chunk
= 0;
272 s
->size
= newsize
/ 2;
274 /* If this is ever reshaped to RAID5, we will
275 * need a chunksize. So round it off a bit
276 * now just to be safe
278 s
->size
&= ~(64ULL-1);
280 if (s
->size
&& c
->verbose
> 0)
281 pr_err("setting size to %lluK\n", s
->size
);
284 /* now look at the subdevs */
285 info
.array
.active_disks
= 0;
286 info
.array
.working_disks
= 0;
288 for (dv
=devlist
; dv
&& !have_container
; dv
=dv
->next
, dnum
++) {
289 char *dname
= dv
->devname
;
290 unsigned long long freesize
;
293 if (strcasecmp(dname
, "missing")==0) {
294 if (first_missing
> dnum
)
295 first_missing
= dnum
;
296 if (second_missing
> dnum
&& dnum
> first_missing
)
297 second_missing
= dnum
;
301 dfd
= open(dname
, O_RDONLY
);
303 pr_err("cannot open %s: %s\n",
304 dname
, strerror(errno
));
307 if (fstat(dfd
, &stb
) != 0 ||
308 (stb
.st_mode
& S_IFMT
) != S_IFBLK
) {
310 pr_err("%s is not a block device\n",
315 info
.array
.working_disks
++;
316 if (dnum
< s
->raiddisks
)
317 info
.array
.active_disks
++;
319 struct createinfo
*ci
= conf_get_create_info();
324 /* Need to choose a default metadata, which is different
325 * depending on geometry of array.
328 char *name
= "default";
329 for(i
=0; !st
&& superlist
[i
]; i
++) {
330 st
= superlist
[i
]->match_metadata_desc(name
);
333 if (do_default_layout
)
334 s
->layout
= default_layout(st
, s
->level
, c
->verbose
);
335 switch (st
->ss
->validate_geometry(
336 st
, s
->level
, s
->layout
, s
->raiddisks
,
337 &s
->chunk
, s
->size
*2, dname
, &freesize
,
339 case -1: /* Not valid, message printed, and not
340 * worth checking any further */
343 case 0: /* Geometry not valid */
346 s
->chunk
= do_default_chunk
? UnSet
: s
->chunk
;
348 case 1: /* All happy */
354 int dfd
= open(dname
, O_RDONLY
|O_EXCL
);
356 pr_err("cannot open %s: %s\n",
357 dname
, strerror(errno
));
360 pr_err("device %s not suitable "
361 "for any style of array\n",
365 if (st
->ss
!= &super0
||
366 st
->minor_version
!= 90)
369 if (do_default_layout
)
370 s
->layout
= default_layout(st
, s
->level
, 0);
371 if (!st
->ss
->validate_geometry(st
, s
->level
, s
->layout
,
373 &s
->chunk
, s
->size
*2, dname
,
377 pr_err("%s is not suitable for "
385 freesize
/= 2; /* convert to K */
386 if (s
->chunk
&& s
->chunk
!= UnSet
) {
387 /* round to chunk size */
388 freesize
= freesize
& ~(s
->chunk
-1);
389 if (do_default_chunk
) {
390 /* default chunk was just set */
393 "defaults to %dK\n", s
->chunk
);
394 s
->size
&= ~(unsigned long long)(s
->chunk
- 1);
395 do_default_chunk
= 0;
399 if (s
->size
&& freesize
< s
->size
) {
400 pr_err("%s is smaller than given size."
401 " %lluK < %lluK + metadata\n",
402 dname
, freesize
, s
->size
);
406 if (maxdisc
== NULL
|| (maxdisc
&& freesize
> maxsize
)) {
410 if (mindisc
==NULL
|| (mindisc
&& freesize
< minsize
)) {
414 if (c
->runstop
!= 1 || c
->verbose
>= 0) {
415 int fd
= open(dname
, O_RDONLY
);
417 pr_err("Cannot open %s: %s\n",
418 dname
, strerror(errno
));
422 warn
|= check_ext2(fd
, dname
);
423 warn
|= check_reiser(fd
, dname
);
424 warn
|= check_raid(fd
, dname
);
425 if (strcmp(st
->ss
->name
, "1.x") == 0 &&
426 st
->minor_version
>= 1)
427 /* metadata at front */
428 warn
|= check_partitions(fd
, dname
, 0, 0);
429 else if (s
->level
== 1 || s
->level
== LEVEL_CONTAINER
430 || (s
->level
== 0 && s
->raiddisks
== 1))
431 /* partitions could be meaningful */
432 warn
|= check_partitions(fd
, dname
, freesize
*2, s
->size
*2);
434 /* partitions cannot be meaningful */
435 warn
|= check_partitions(fd
, dname
, 0, 0);
436 if (strcmp(st
->ss
->name
, "1.x") == 0 &&
437 st
->minor_version
>= 1 &&
440 (warn
& 1024) == 0) {
442 pr_err("Note: this array has metadata at the start and\n"
443 " may not be suitable as a boot device. If you plan to\n"
444 " store '/boot' on this device please ensure that\n"
445 " your boot-loader understands md/v1.x metadata, or use\n"
446 " --metadata=0.90\n");
451 if (s
->raiddisks
+ s
->sparedisks
> st
->max_devs
) {
452 pr_err("Too many devices:"
453 " %s metadata only supports %d\n",
454 st
->ss
->name
, st
->max_devs
);
458 info
.array
.working_disks
= s
->raiddisks
;
460 pr_err("create aborted\n");
464 if (mindisc
== NULL
&& !have_container
) {
465 pr_err("no size and no drives given - aborting create.\n");
468 if (s
->level
> 0 || s
->level
== LEVEL_MULTIPATH
469 || s
->level
== LEVEL_FAULTY
470 || st
->ss
->external
) {
471 /* size is meaningful */
472 if (!st
->ss
->validate_geometry(st
, s
->level
, s
->layout
,
474 &s
->chunk
, minsize
*2,
476 pr_err("devices too large for RAID level %d\n", s
->level
);
481 /* If this is ever reshaped to RAID5, we will
482 * need a chunksize. So round it off a bit
483 * now just to be safe
485 s
->size
&= ~(64ULL-1);
487 pr_err("size set to %lluK\n", s
->size
);
490 if (!have_container
&& s
->level
> 0 && ((maxsize
-s
->size
)*100 > maxsize
)) {
491 if (c
->runstop
!= 1 || c
->verbose
>= 0)
492 pr_err("largest drive (%s) exceeds size (%lluK) by more than 1%%\n",
497 if (st
->ss
->detail_platform
&& st
->ss
->detail_platform(0, 1) != 0) {
498 if (c
->runstop
!= 1 || c
->verbose
>= 0)
499 pr_err("%s unable to enumerate platform support\n"
500 " array may not be compatible with hardware/firmware\n",
506 if (c
->runstop
!= 1) {
507 if (!ask("Continue creating array? ")) {
508 pr_err("create aborted.\n");
513 pr_err("creation continuing despite oddities due to --run\n");
517 /* If this is raid4/5, we want to configure the last active slot
518 * as missing, so that a reconstruct happens (faster than re-parity)
519 * FIX: Can we do this for raid6 as well?
521 if (st
->ss
->external
== 0 &&
522 s
->assume_clean
==0 && c
->force
== 0 && first_missing
>= s
->raiddisks
) {
523 switch ( s
->level
) {
526 insert_point
= s
->raiddisks
-1;
528 info
.array
.active_disks
--;
535 /* For raid6, if creating with 1 missing drive, make a good drive
536 * into a spare, else the create will fail
538 if (s
->assume_clean
== 0 && c
->force
== 0 && first_missing
< s
->raiddisks
&&
539 st
->ss
->external
== 0 &&
540 second_missing
>= s
->raiddisks
&& s
->level
== 6) {
541 insert_point
= s
->raiddisks
- 1;
542 if (insert_point
== first_missing
)
545 info
.array
.active_disks
--;
549 if (s
->level
<= 0 && first_missing
< subdevs
* 2) {
550 pr_err("This level does not support missing devices\n");
554 /* We need to create the device */
556 mdfd
= create_mddev(mddev
, name
, c
->autof
, LOCAL
, chosen_name
);
561 /* verify if chosen_name is not in use,
562 * it could be in conflict with already existing device
563 * e.g. container, array
565 if (strncmp(chosen_name
, "/dev/md/", 8) == 0
566 && map_by_name(&map
, chosen_name
+8) != NULL
) {
567 pr_err("Array name %s is in use already.\n",
575 vers
= md_get_version(mdfd
);
577 pr_err("Create requires md driver version 0.90.0 or later\n");
580 mdu_array_info_t inf
;
581 memset(&inf
, 0, sizeof(inf
));
582 ioctl(mdfd
, GET_ARRAY_INFO
, &inf
);
583 if (inf
.working_disks
!= 0) {
584 pr_err("another array by this name"
585 " is already running.\n");
590 /* Ok, lets try some ioctls */
592 info
.array
.level
= s
->level
;
593 info
.array
.size
= s
->size
;
594 info
.array
.raid_disks
= s
->raiddisks
;
595 /* The kernel should *know* what md_minor we are dealing
596 * with, but it chooses to trust me instead. Sigh
598 info
.array
.md_minor
= 0;
599 if (fstat(mdfd
, &stb
)==0)
600 info
.array
.md_minor
= minor(stb
.st_rdev
);
601 info
.array
.not_persistent
= 0;
603 if ( ( (s
->level
== 4 || s
->level
== 5) &&
604 (insert_point
< s
->raiddisks
|| first_missing
< s
->raiddisks
) )
606 ( s
->level
== 6 && (insert_point
< s
->raiddisks
607 || second_missing
< s
->raiddisks
))
613 info
.array
.state
= 1; /* clean, but one+ drive will be missing*/
614 info
.resync_start
= MaxSector
;
616 info
.array
.state
= 0; /* not clean, but no errors */
617 info
.resync_start
= 0;
619 if (s
->level
== 10) {
620 /* for raid10, the bitmap size is the capacity of the array,
621 * which is array.size * raid_disks / ncopies;
622 * .. but convert to sectors.
624 int ncopies
= ((s
->layout
>>8) & 255) * (s
->layout
& 255);
625 bitmapsize
= s
->size
* s
->raiddisks
/ ncopies
* 2;
626 /* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, s->size, s->raiddisks, ncopies);*/
628 bitmapsize
= s
->size
* 2;
630 /* There is lots of redundancy in these disk counts,
631 * raid_disks is the most meaningful value
632 * it describes the geometry of the array
634 * nr_disks is total number of used slots.
635 * it should be raid_disks+spare_disks
636 * spare_disks is the number of extra disks present
638 * active_disks is the number of working disks in
639 * active slots. (With raid_disks)
640 * working_disks is the total number of working disks,
642 * failed_disks is the number of disks marked failed
644 * Ideally, the kernel would keep these (except raid_disks)
645 * up-to-date as we ADD_NEW_DISK, but it doesn't (yet).
646 * So for now, we assume that all raid and spare
647 * devices will be given.
649 info
.array
.spare_disks
=s
->sparedisks
;
650 info
.array
.failed_disks
=missing_disks
;
651 info
.array
.nr_disks
= info
.array
.working_disks
652 + info
.array
.failed_disks
;
653 info
.array
.layout
= s
->layout
;
654 info
.array
.chunk_size
= s
->chunk
*1024;
656 if (name
== NULL
|| *name
== 0) {
657 /* base name on mddev */
662 * /dev/md/home -> home
663 * /dev/mdhome -> home
665 /* FIXME compare this with rules in create_mddev */
666 name
= strrchr(mddev
, '/');
669 if (strncmp(name
, "md_d", 4)==0 &&
672 (name
-mddev
) == 5 /* /dev/ */)
674 else if (strncmp(name
, "md", 2)==0 &&
677 (name
-mddev
) == 5 /* /dev/ */)
681 if (!st
->ss
->init_super(st
, &info
.array
, s
->size
, name
, c
->homehost
, uuid
))
684 total_slots
= info
.array
.nr_disks
;
685 st
->ss
->getinfo_super(st
, &info
, NULL
);
686 sysfs_init(&info
, mdfd
, 0);
688 if (did_default
&& c
->verbose
>= 0) {
689 if (is_subarray(info
.text_version
)) {
690 int dnum
= devname2devnum(info
.text_version
+1);
692 int mdp
= get_mdp_major();
695 path
= map_dev(MD_MAJOR
, dnum
, 1);
697 path
= map_dev(mdp
, (-1-dnum
)<< 6, 1);
699 mdi
= sysfs_read(-1, dnum
, GET_VERSION
);
701 pr_err("Creating array inside "
703 mdi
?mdi
->text_version
:"managed", path
);
706 pr_err("Defaulting to version"
707 " %s metadata\n", info
.text_version
);
710 map_update(&map
, fd2devnum(mdfd
), info
.text_version
,
711 info
.uuid
, chosen_name
);
714 if (s
->bitmap_file
&& vers
< 9003) {
715 major_num
= BITMAP_MAJOR_HOSTENDIAN
;
717 pr_err("Warning - bitmaps created on this kernel are not portable\n"
718 " between different architectured. Consider upgrading the Linux kernel.\n");
722 if (s
->bitmap_file
&& strcmp(s
->bitmap_file
, "internal")==0) {
723 if ((vers
%100) < 2) {
724 pr_err("internal bitmaps not supported by this kernel.\n");
727 if (!st
->ss
->add_internal_bitmap
) {
728 pr_err("internal bitmaps not supported with %s metadata\n",
732 if (!st
->ss
->add_internal_bitmap(st
, &s
->bitmap_chunk
,
733 c
->delay
, s
->write_behind
,
734 bitmapsize
, 1, major_num
)) {
735 pr_err("Given bitmap chunk size not supported.\n");
738 s
->bitmap_file
= NULL
;
742 sysfs_init(&info
, mdfd
, 0);
744 if (st
->ss
->external
&& st
->container_dev
!= NoMdDev
) {
747 /* When creating a member, we need to be careful
748 * to negotiate with mdmon properly.
749 * If it is already running, we cannot write to
750 * the devices and must ask it to do that part.
751 * If it isn't running, we write to the devices,
753 * We hold an exclusive open on the container
754 * device to make sure mdmon doesn't exit after
755 * we checked that it is running.
757 * For now, fail if it is already running.
759 container_fd
= open_dev_excl(st
->container_dev
);
760 if (container_fd
< 0) {
761 pr_err("Cannot get exclusive "
762 "open on container - weird.\n");
765 if (mdmon_running(st
->container_dev
)) {
767 pr_err("reusing mdmon "
769 devnum2devname(st
->container_dev
));
770 st
->update_tail
= &st
->updates
;
774 rv
= set_array_info(mdfd
, st
, &info
);
776 pr_err("failed to set array info for %s: %s\n",
777 mddev
, strerror(errno
));
781 if (s
->bitmap_file
) {
784 st
->ss
->uuid_from_super(st
, uuid
);
785 if (CreateBitmap(s
->bitmap_file
, c
->force
, (char*)uuid
, s
->bitmap_chunk
,
786 c
->delay
, s
->write_behind
,
791 bitmap_fd
= open(s
->bitmap_file
, O_RDWR
);
793 pr_err("weird: %s cannot be openned\n",
797 if (ioctl(mdfd
, SET_BITMAP_FILE
, bitmap_fd
) < 0) {
798 pr_err("Cannot set bitmap file for %s: %s\n",
799 mddev
, strerror(errno
));
804 infos
= xmalloc(sizeof(*infos
) * total_slots
);
806 for (pass
=1; pass
<=2 ; pass
++) {
807 struct mddev_dev
*moved_disk
= NULL
; /* the disk that was moved out of the insert point */
809 for (dnum
=0, dv
= devlist
; dv
;
810 dv
=(dv
->next
)?(dv
->next
):moved_disk
, dnum
++) {
813 struct mdinfo
*inf
= &infos
[dnum
];
815 if (dnum
>= total_slots
)
817 if (dnum
== insert_point
) {
821 if (strcasecmp(dv
->devname
, "missing")==0)
825 if (have_container
&& dnum
< info
.array
.raid_disks
- 1)
826 /* repeatedly use the container */
833 inf
->disk
.number
= dnum
;
834 inf
->disk
.raid_disk
= dnum
;
835 if (inf
->disk
.raid_disk
< s
->raiddisks
)
836 inf
->disk
.state
= (1<<MD_DISK_ACTIVE
) |
841 if (dv
->writemostly
== 1)
842 inf
->disk
.state
|= (1<<MD_DISK_WRITEMOSTLY
);
847 if (st
->ss
->external
&&
848 st
->container_dev
!= NoMdDev
)
849 fd
= open(dv
->devname
, O_RDWR
);
851 fd
= open(dv
->devname
, O_RDWR
|O_EXCL
);
854 pr_err("failed to open %s "
855 "after earlier success - aborting\n",
860 inf
->disk
.major
= major(stb
.st_rdev
);
861 inf
->disk
.minor
= minor(stb
.st_rdev
);
864 remove_partitions(fd
);
865 if (st
->ss
->add_to_super(st
, &inf
->disk
,
867 ioctl(mdfd
, STOP_ARRAY
, NULL
);
870 st
->ss
->getinfo_super(st
, inf
, NULL
);
871 safe_mode_delay
= inf
->safe_mode_delay
;
873 if (have_container
&& c
->verbose
> 0)
874 pr_err("Using %s for device %d\n",
875 map_dev(inf
->disk
.major
,
879 if (!have_container
) {
880 /* getinfo_super might have lost these ... */
881 inf
->disk
.major
= major(stb
.st_rdev
);
882 inf
->disk
.minor
= minor(stb
.st_rdev
);
888 rv
= add_disk(mdfd
, st
, &info
, inf
);
891 pr_err("ADD_NEW_DISK for %s "
893 dv
->devname
, strerror(errno
));
898 if (!have_container
&&
899 dv
== moved_disk
&& dnum
!= insert_point
) break;
902 struct mdinfo info_new
;
903 struct map_ent
*me
= NULL
;
905 /* check to see if the uuid has changed due to these
906 * metadata changes, and if so update the member array
907 * and container uuid. Note ->write_init_super clears
908 * the subarray cursor such that ->getinfo_super once
909 * again returns container info.
912 st
->ss
->getinfo_super(st
, &info_new
, NULL
);
913 if (st
->ss
->external
&& s
->level
!= LEVEL_CONTAINER
&&
914 !same_uuid(info_new
.uuid
, info
.uuid
, 0)) {
915 map_update(&map
, fd2devnum(mdfd
),
916 info_new
.text_version
,
917 info_new
.uuid
, chosen_name
);
918 me
= map_by_devnum(&map
, st
->container_dev
);
921 if (st
->ss
->write_init_super(st
)) {
922 st
->ss
->free_super(st
);
926 /* update parent container uuid */
928 char *path
= xstrdup(me
->path
);
930 st
->ss
->getinfo_super(st
, &info_new
, NULL
);
931 map_update(&map
, st
->container_dev
,
932 info_new
.text_version
,
933 info_new
.uuid
, path
);
938 flush_metadata_updates(st
);
939 st
->ss
->free_super(st
);
944 if (s
->level
== LEVEL_CONTAINER
) {
945 /* No need to start. But we should signal udev to
947 sysfs_uevent(&info
, "change");
949 pr_err("container %s prepared.\n", mddev
);
950 wait_for(chosen_name
, mdfd
);
951 } else if (c
->runstop
== 1 || subdevs
>= s
->raiddisks
) {
952 if (st
->ss
->external
) {
956 case LEVEL_MULTIPATH
:
958 err
= sysfs_set_str(&info
, NULL
, "array_state",
965 err
= sysfs_set_str(&info
, NULL
, "array_state",
969 sysfs_set_safemode(&info
, safe_mode_delay
);
972 " activate array.\n");
973 ioctl(mdfd
, STOP_ARRAY
, NULL
);
976 } else if (c
->readonly
&&
977 sysfs_attribute_available(
978 &info
, NULL
, "array_state")) {
979 if (sysfs_set_str(&info
, NULL
,
980 "array_state", "readonly") < 0) {
981 pr_err("Failed to start array: %s\n",
983 ioctl(mdfd
, STOP_ARRAY
, NULL
);
987 /* param is not actually used */
989 if (ioctl(mdfd
, RUN_ARRAY
, ¶m
)) {
990 pr_err("RUN_ARRAY failed: %s\n",
992 if (info
.array
.chunk_size
& (info
.array
.chunk_size
-1)) {
993 cont_err("Problem may be that "
994 "chunk size is not a power of 2\n");
996 ioctl(mdfd
, STOP_ARRAY
, NULL
);
1000 if (c
->verbose
>= 0)
1001 pr_err("array %s started.\n", mddev
);
1002 if (st
->ss
->external
&& st
->container_dev
!= NoMdDev
) {
1004 start_mdmon(st
->container_dev
);
1006 ping_monitor_by_id(st
->container_dev
);
1007 close(container_fd
);
1009 wait_for(chosen_name
, mdfd
);
1011 pr_err("not starting array - not enough devices.\n");
1019 map_remove(&map
, fd2devnum(mdfd
));