/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
+ * Copyright (C) 2001-2009 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Author: Neil Brown
- * Email: <neilb@cse.unsw.edu.au>
- * Paper: Neil Brown
- * School of Computer Science and Engineering
- * The University of New South Wales
- * Sydney, 2052
- * Australia
+ * Email: <neilb@suse.de>
*/
#include "mdadm.h"
#include "md_p.h"
#include <ctype.h>
+static int default_layout(struct supertype *st, int level, int verbose)
+{
+ int layout = UnSet;
+
+ if (st && st->ss->default_layout)
+ layout = st->ss->default_layout(level);
+
+ if (layout == UnSet)
+ switch(level) {
+ default: /* no layout */
+ layout = 0;
+ break;
+ case 10:
+ layout = 0x102; /* near=2, far=1 */
+ if (verbose > 0)
+ fprintf(stderr,
+ Name ": layout defaults to n1\n");
+ break;
+ case 5:
+ case 6:
+ layout = map_name(r5layout, "default");
+ if (verbose > 0)
+ fprintf(stderr,
+ Name ": layout defaults to %s\n", map_num(r5layout, layout));
+ break;
+ case LEVEL_FAULTY:
+ layout = map_name(faultylayout, "default");
+
+ if (verbose > 0)
+ fprintf(stderr,
+ Name ": layout defaults to %s\n", map_num(faultylayout, layout));
+ break;
+ }
+
+ return layout;
+}
+
+
int Create(struct supertype *st, char *mddev,
int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
char *name, char *homehost, int *uuid,
unsigned long long bitmapsize;
struct mdinfo info, *infos;
int did_default = 0;
+ int do_default_layout = 0;
unsigned long safe_mode_delay = 0;
char chosen_name[1024];
struct map_ent *map = NULL;
else
st = NULL;
}
- if (have_container)
+ if (have_container) {
subdevs = raiddisks;
+ first_missing = subdevs * 2;
+ second_missing = subdevs * 2;
+ insert_point = subdevs * 2;
+ }
}
if (fd >= 0)
close(fd);
if (st && st->ss->external && sparedisks) {
fprintf(stderr,
Name ": This metadata type does not support "
- "spare disks are create time\n");
+ "spare disks at create time\n");
return 1;
}
if (subdevs > raiddisks+sparedisks) {
}
/* now set some defaults */
- if (layout == UnSet)
- switch(level) {
- default: /* no layout */
- layout = 0;
- break;
- case 10:
- layout = 0x102; /* near=2, far=1 */
- if (verbose > 0)
- fprintf(stderr,
- Name ": layout defaults to n1\n");
- break;
- case 5:
- case 6:
- layout = map_name(r5layout, "default");
- if (verbose > 0)
- fprintf(stderr,
- Name ": layout defaults to %s\n", map_num(r5layout, layout));
- break;
- case LEVEL_FAULTY:
- layout = map_name(faultylayout, "default");
- if (verbose > 0)
- fprintf(stderr,
- Name ": layout defaults to %s\n", map_num(faultylayout, layout));
- break;
- }
+
+ if (layout == UnSet) {
+ do_default_layout = 1;
+ layout = default_layout(st, level, verbose);
+ }
if (level == 10)
/* check layout fits in array*/
case 10:
case 6:
case 0:
- case LEVEL_LINEAR: /* linear */
if (chunk == 0) {
+ chunk = 512;
+ if (verbose > 0)
+ fprintf(stderr, Name ": chunk size defaults to 512K\n");
+ }
+ break;
+ case LEVEL_LINEAR:
+ /* a chunksize of zero 0s perfectly valid (and preferred) since 2.6.16 */
+ if (get_linux_version() < 2006016 && chunk == 0) {
chunk = 64;
if (verbose > 0)
fprintf(stderr, Name ": chunk size defaults to 64K\n");
return 1;
}
+ if (size && chunk)
+ size &= ~(unsigned long long)(chunk - 1);
newsize = size * 2;
if (st && ! st->ss->validate_geometry(st, level, layout, raiddisks,
chunk, size*2, NULL, &newsize, verbose>=0))
char *name = "default";
for(i=0; !st && superlist[i]; i++) {
st = superlist[i]->match_metadata_desc(name);
+ if (do_default_layout)
+ layout = default_layout(st, level, verbose);
if (st && !st->ss->validate_geometry
(st, level, layout, raiddisks,
chunk, size*2, dname, &freesize,
st->minor_version != 90)
did_default = 1;
} else {
+ if (do_default_layout)
+ layout = default_layout(st, level, verbose);
if (!st->ss->validate_geometry(st, level, layout,
raiddisks,
chunk, size*2, dname,
&freesize,
- verbose > 0)) {
+ verbose >= 0)) {
fprintf(stderr,
Name ": %s is not suitable for "
warn |= check_ext2(fd, dname);
warn |= check_reiser(fd, dname);
warn |= check_raid(fd, dname);
+ if (strcmp(st->ss->name, "1.x") == 0 &&
+ st->minor_version >= 1)
+ /* metadata at front */
+ warn |= check_partitions(fd, dname, 0);
+ else if (level == 1 || level == LEVEL_CONTAINER)
+ /* partitions could be meaningful */
+ warn |= check_partitions(fd, dname, freesize*2);
+ else
+ /* partitions cannot be meaningful */
+ warn |= check_partitions(fd, dname, 0);
+ if (strcmp(st->ss->name, "1.x") == 0 &&
+ st->minor_version >= 1 &&
+ did_default &&
+ level == 1 &&
+ (warn & 1024) == 0) {
+ warn |= 1024;
+ fprintf(stderr, Name ": Note: this array has metadata at the start and\n"
+ " may not be suitable as a boot device. If you plan to\n"
+ " store '/boot' on this device please ensure that\n"
+ " your boot-loader understands md/v1.x metadata, or use\n"
+ " --metadata=0.90\n");
+ }
close(fd);
}
}
warn = 1;
}
+ if (st->ss->detail_platform && st->ss->detail_platform(0, 1) != 0) {
+ if (runstop != 1 || verbose >= 0)
+ fprintf(stderr, Name ": %s unable to enumerate platform support\n"
+ " array may not be compatible with hardware/firmware\n",
+ st->ss->name);
+ warn = 1;
+ }
+
if (warn) {
if (runstop!= 1) {
if (!ask("Continue creating array? ")) {
assume_clean
) {
info.array.state = 1; /* clean, but one+ drive will be missing*/
- info.resync_start = ~0ULL;
+ info.resync_start = MaxSector;
} else {
info.array.state = 0; /* not clean, but no errors */
info.resync_start = 0;
dv == moved_disk && dnum != insert_point) break;
}
if (pass == 1) {
+ struct mdinfo info_new;
+ struct map_ent *me = NULL;
+
+ /* check to see if the uuid has changed due to these
+ * metadata changes, and if so update the member array
+ * and container uuid. Note ->write_init_super clears
+ * the subarray cursor such that ->getinfo_super once
+ * again returns container info.
+ */
+ map_lock(&map);
+ st->ss->getinfo_super(st, &info_new);
+ if (st->ss->external && level != LEVEL_CONTAINER &&
+ !same_uuid(info_new.uuid, info.uuid, 0)) {
+ map_update(&map, fd2devnum(mdfd),
+ info_new.text_version,
+ info_new.uuid, chosen_name);
+ me = map_by_devnum(&map, st->container_dev);
+ }
+
st->ss->write_init_super(st);
+
+ /* update parent container uuid */
+ if (me) {
+ char *path = strdup(me->path);
+
+ st->ss->getinfo_super(st, &info_new);
+ map_update(&map, st->container_dev,
+ info_new.text_version,
+ info_new.uuid, path);
+ free(path);
+ }
+ map_unlock(&map);
+
flush_metadata_updates(st);
}
}
sysfs_uevent(&info, "change");
if (verbose >= 0)
fprintf(stderr, Name ": container %s prepared.\n", mddev);
+ wait_for(chosen_name, mdfd);
} else if (runstop == 1 || subdevs >= raiddisks) {
if (st->ss->external) {
switch(level) {
ping_monitor(devnum2devname(st->container_dev));
close(container_fd);
}
- wait_for(chosen_name);
+ wait_for(chosen_name, mdfd);
} else {
fprintf(stderr, Name ": not starting array - not enough devices.\n");
}
projects / thirdparty / mdadm.git / blobdiff