/*
* mdadm - manage Linux "md" devices aka RAID arrays.
*
- * Copyright (C) 2001-2002 Neil Brown <neilb@cse.unsw.edu.au>
+ * Copyright (C) 2001-2006 Neil Brown <neilb@suse.de>
*
*
* This program is free software; you can redistribute it and/or modify
#include "mdadm.h"
#include "md_u.h"
#include "md_p.h"
+#include <ctype.h>
int Create(struct supertype *st, char *mddev, int mdfd,
- int chunk, int level, int layout, unsigned long size, int raiddisks, int sparedisks,
+ int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
+ char *name, char *homehost, int *uuid,
int subdevs, mddev_dev_t devlist,
- int runstop, int verbose, int force,
- char *bitmap_file, int bitmap_chunk, int delay)
+ int runstop, int verbose, int force, int assume_clean,
+ char *bitmap_file, int bitmap_chunk, int write_behind, int delay)
{
/*
* Create a new raid array.
int vers;
int rv;
int bitmap_fd;
+ unsigned long long bitmapsize;
mdu_array_info_t array;
-
+ int major_num = BITMAP_MAJOR_HI;
+
+ memset(&array, 0, sizeof(array));
+
vers = md_get_version(mdfd);
if (vers < 9000) {
fprintf(stderr, Name ": Create requires md driver version 0.90.0 or later\n");
return 1;
+ } else {
+ mdu_array_info_t inf;
+ memset(&inf, 0, sizeof(inf));
+ ioctl(mdfd, GET_ARRAY_INFO, &inf);
+ if (inf.working_disks != 0) {
+ fprintf(stderr, Name ": another array by this name"
+ " is already running.\n");
+ return 1;
+ }
}
if (level == UnSet) {
fprintf(stderr,
Name ": a RAID level is needed to create an array.\n");
return 1;
}
- if (raiddisks < 1) {
- fprintf(stderr,
- Name ": a number of --raid-devices must be given to create an array\n");
- return 1;
- }
if (raiddisks < 4 && level == 6) {
fprintf(stderr,
Name ": at least 4 raid-devices needed for level 6\n");
Name ": at least 2 raid-devices needed for level 4 or 5\n");
return 1;
}
+ if (level <= 0 && sparedisks) {
+ fprintf(stderr,
+ Name ": This level does not support spare devices\n");
+ return 1;
+ }
if (subdevs > raiddisks+sparedisks) {
fprintf(stderr, Name ": You have listed more devices (%d) than are in the array(%d)!\n", subdevs, raiddisks+sparedisks);
return 1;
fprintf(stderr, Name ": You haven't given enough devices (real or missing) to create this array\n");
return 1;
}
+ if (bitmap_file && level <= 0) {
+ fprintf(stderr, Name ": bitmaps not meaningful with level %s\n",
+ map_num(pers, level)?:"given");
+ return 1;
+ }
/* now set some defaults */
if (layout == UnSet)
break;
case 10:
layout = 0x102; /* near=2, far=1 */
- if (verbose)
+ if (verbose > 0)
fprintf(stderr,
Name ": layout defaults to n1\n");
break;
case 5:
case 6:
layout = map_name(r5layout, "default");
- if (verbose)
+ 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)
+ if (verbose > 0)
fprintf(stderr,
Name ": layout defaults to %s\n", map_num(faultylayout, layout));
break;
case 10:
case 6:
case 0:
- case -1: /* linear */
+ case LEVEL_LINEAR: /* linear */
if (chunk == 0) {
chunk = 64;
- if (verbose)
+ if (verbose > 0)
fprintf(stderr, Name ": chunk size defaults to 64K\n");
}
break;
- default: /* raid1, multipath */
+ case 1:
+ case LEVEL_FAULTY:
+ case LEVEL_MULTIPATH:
if (chunk) {
chunk = 0;
- if (verbose)
+ if (verbose > 0)
fprintf(stderr, Name ": chunk size ignored for this level\n");
}
break;
+ default:
+ fprintf(stderr, Name ": unknown level %d\n", level);
+ return 1;
}
/* now look at the subdevs */
dnum = 0;
for (dv=devlist; dv; dv=dv->next, dnum++) {
char *dname = dv->devname;
- unsigned long dsize;
unsigned long long ldsize, freesize;
int fd;
if (strcasecmp(dname, "missing")==0) {
fail=1;
continue;
}
-#ifdef BLKGETSIZE64
- if (ioctl(fd, BLKGETSIZE64, &ldsize)==0)
- ;
- else
-#endif
- if (ioctl(fd, BLKGETSIZE, &dsize)) {
- fprintf(stderr, Name ": Cannot get size of %s: %s\n",
- dname, strerror(errno));
+ if (!get_dev_size(fd, dname, &ldsize)) {
fail = 1;
close(fd);
continue;
}
- else {
- ldsize = dsize;
- ldsize <<= 9;
+ if (st == NULL) {
+ struct createinfo *ci = conf_get_create_info();
+ if (ci)
+ st = ci->supertype;
}
- freesize = st->ss->avail_size(ldsize >> 9);
+ if (st == NULL) {
+ /* Need to choose a default metadata, which is different
+ * depending on the sizes of devices
+ */
+ int i;
+ char *name = "default";
+ if (level >= 1 && ldsize > (0x7fffffffULL<<10))
+ name = "default/large";
+ for(i=0; !st && superlist[i]; i++)
+ st = superlist[i]->match_metadata_desc(name);
+
+ if (!st) {
+ fprintf(stderr, Name ": internal error - no default metadata style\n");
+ exit(2);
+ }
+ if (st->ss->major != 0 ||
+ st->minor_version != 90)
+ fprintf(stderr, Name ": Defaulting to version"
+ " %d.%d metadata\n",
+ st->ss->major,
+ st->minor_version);
+ }
+ freesize = st->ss->avail_size(st, ldsize >> 9);
if (freesize == 0) {
fprintf(stderr, Name ": %s is too small: %luK\n",
dname, (unsigned long)(ldsize>>10));
}
freesize /= 2; /* convert to K */
+ if (chunk) {
+ /* round to chunk size */
+ freesize = freesize & ~(chunk-1);
+ }
if (size && freesize < size) {
fprintf(stderr, Name ": %s is smaller that given size."
- " %lluK < %luK + superblock\n", dname, freesize, size);
+ " %lluK < %lluK + superblock\n", dname, freesize, size);
fail = 1;
close(fd);
continue;
mindisc = dname;
minsize = freesize;
}
- warn |= check_ext2(fd, dname);
- warn |= check_reiser(fd, dname);
- warn |= check_raid(fd, dname);
+ if (runstop != 1 || verbose >= 0) {
+ warn |= check_ext2(fd, dname);
+ warn |= check_reiser(fd, dname);
+ warn |= check_raid(fd, dname);
+ }
close(fd);
}
if (fail) {
fprintf(stderr, Name ": no size and no drives given - aborting create.\n");
return 1;
}
- if (level > 0) {
+ if (level > 0 || level == LEVEL_MULTIPATH || level == LEVEL_FAULTY) {
/* size is meaningful */
- if (minsize > 0x100000000ULL) {
- fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
+ if (minsize > 0x100000000ULL && st->ss->major == 0) {
+ fprintf(stderr, Name ": devices too large for RAID level %d\n", level);
return 1;
}
size = minsize;
- if (verbose)
- fprintf(stderr, Name ": size set to %luK\n", size);
+ if (verbose > 0)
+ fprintf(stderr, Name ": size set to %lluK\n", size);
}
}
if (level > 0 && ((maxsize-size)*100 > maxsize)) {
- fprintf(stderr, Name ": largest drive (%s) exceed size (%luK) by more than 1%%\n",
- maxdisc, size);
+ if (runstop != 1 || verbose >= 0)
+ fprintf(stderr, Name ": largest drive (%s) exceed size (%lluK) by more than 1%%\n",
+ maxdisc, size);
warn = 1;
}
return 1;
}
} else {
- if (verbose)
+ if (verbose > 0)
fprintf(stderr, Name ": creation continuing despite oddities due to --run\n");
}
}
- /* If this is raid5, we want to configure the last active slot
+ /* If this is raid4/5, we want to configure the last active slot
* as missing, so that a reconstruct happens (faster than re-parity)
* FIX: Can we do this for raid6 as well?
*/
- if (force == 0 && first_missing >= raiddisks) {
+ if (assume_clean==0 && force == 0 && first_missing >= raiddisks) {
switch ( level ) {
+ case 4:
case 5:
insert_point = raiddisks-1;
sparedisks++;
break;
}
}
-
+
+ if (level <= 0 && first_missing != subdevs * 2) {
+ fprintf(stderr,
+ Name ": This level does not support missing devices\n");
+ return 1;
+ }
+
/* Ok, lets try some ioctls */
array.level = level;
array.md_minor = minor(stb.st_rdev);
array.not_persistent = 0;
/*** FIX: Need to do something about RAID-6 here ***/
- if ( ( (level == 5) &&
+ if ( ( (level == 4 || level == 5) &&
(insert_point < raiddisks || first_missing < raiddisks) )
||
( level == 6 && missing_disks == 2)
+ ||
+ assume_clean
)
array.state = 1; /* clean, but one+ drive will be missing */
else
array.state = 0; /* not clean, but no errors */
+ if (level == 10) {
+ /* for raid10, the bitmap size is the capacity of the array,
+ * which is array.size * raid_disks / ncopies;
+ * .. but convert to sectors.
+ */
+ int ncopies = ((layout>>8) & 255) * (layout & 255);
+ bitmapsize = (unsigned long long)size * raiddisks / ncopies * 2;
+/* printf("bms=%llu as=%d rd=%d nc=%d\n", bitmapsize, size, raiddisks, ncopies);*/
+ } else
+ bitmapsize = (unsigned long long)size * 2;
+
/* There is lots of redundancy in these disk counts,
* raid_disks is the most meaningful value
* it describes the geometry of the array
array.nr_disks = array.working_disks + array.failed_disks;
array.layout = layout;
array.chunk_size = chunk*1024;
+ array.major_version = st->ss->major;
-
- if (!st->ss->init_super(&super, &array))
+ if (name == NULL || *name == 0) {
+ /* base name on mddev */
+ /* /dev/md0 -> 0
+ * /dev/md_d0 -> d0
+ * /dev/md/1 -> 1
+ * /dev/md/d1 -> d1
+ * /dev/md/home -> home
+ * /dev/mdhome -> home
+ */
+ name = strrchr(mddev, '/');
+ if (name) {
+ name++;
+ if (strncmp(name, "md_d", 4)==0 &&
+ strlen(name) > 4 &&
+ isdigit(name[4]) &&
+ (name-mddev) == 5 /* /dev/ */)
+ name += 3;
+ else if (strncmp(name, "md", 2)==0 &&
+ strlen(name) > 2 &&
+ isdigit(name[2]) &&
+ (name-mddev) == 5 /* /dev/ */)
+ name += 2;
+ }
+ }
+ if (!st->ss->init_super(st, &super, &array, size, name, homehost, uuid))
return 1;
+ if (bitmap_file && vers < 9003) {
+ major_num = BITMAP_MAJOR_HOSTENDIAN;
+#ifdef __BIG_ENDIAN
+ fprintf(stderr, Name ": Warning - bitmaps created on this kernel are not portable\n"
+ " between different architectured. Consider upgrading the Linux kernel.\n");
+#endif
+ }
+
if (bitmap_file && strcmp(bitmap_file, "internal")==0) {
if ((vers%100) < 2) {
fprintf(stderr, Name ": internal bitmaps not supported by this kernel.\n");
return 1;
}
- if (!st->ss->add_internal_bitmap(super, bitmap_chunk, delay,
- size ? size : maxsize)) {
+ if (!st->ss->add_internal_bitmap(st, super, &bitmap_chunk,
+ delay, write_behind,
+ bitmapsize, 1, major_num)) {
fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
return 1;
}
inf.major_version = st->ss->major;
inf.minor_version = st->minor_version;
rv = ioctl(mdfd, SET_ARRAY_INFO, &inf);
- } else
+ } else
rv = ioctl(mdfd, SET_ARRAY_INFO, NULL);
if (rv) {
fprintf(stderr, Name ": SET_ARRAY_INFO failed for %s: %s\n",
if (bitmap_file) {
int uuid[4];
- if (bitmap_chunk == UnSet)
- bitmap_chunk = DEFAULT_BITMAP_CHUNK;
-
- st->ss->uuid_from_super(uuid, super);
- if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk, delay,
- array.size*2ULL /* FIXME wrong for raid10 */)) {
+ st->ss->uuid_from_super(st, uuid, super);
+ if (CreateBitmap(bitmap_file, force, (char*)uuid, bitmap_chunk,
+ delay, write_behind,
+ bitmapsize,
+ major_num)) {
return 1;
}
bitmap_fd = open(bitmap_file, O_RDWR);
if (bitmap_fd < 0) {
fprintf(stderr, Name ": weird: %s cannot be openned\n",
- bitmap_file);
+ bitmap_file);
return 1;
}
if (ioctl(mdfd, SET_BITMAP_FILE, bitmap_fd) < 0) {
}
disk.raid_disk = disk.number;
if (disk.raid_disk < raiddisks)
- disk.state = 6; /* active and in sync */
+ disk.state = (1<<MD_DISK_ACTIVE) |
+ (1<<MD_DISK_SYNC);
else
disk.state = 0;
+ if (dv->writemostly)
+ disk.state |= (1<<MD_DISK_WRITEMOSTLY);
+
if (dnum == insert_point ||
strcasecmp(dv->devname, "missing")==0) {
disk.major = 0;
disk.minor = 0;
- disk.state = 1; /* faulty */
+ disk.state = (1<<MD_DISK_FAULTY);
} else {
fd = open(dv->devname, O_RDONLY|O_EXCL, 0);
if (fd < 0) {
fstat(fd, &stb);
disk.major = major(stb.st_rdev);
disk.minor = minor(stb.st_rdev);
+ remove_partitions(fd);
close(fd);
}
switch(pass){
case 1:
- st->ss->add_to_super(super, &disk);
+ st->ss->add_to_super(st, super, &disk);
break;
case 2:
if (disk.state == 1) break;
+ Kill(dv->devname, 0, 1); /* Just be sure it is clean */
+ Kill(dv->devname, 0, 1); /* and again, there could be two superblocks */
st->ss->write_init_super(st, super, &disk, dv->devname);
if (ioctl(mdfd, ADD_NEW_DISK, &disk)) {
fprintf(stderr, Name ": ADD_NEW_DISK for %s failed: %s\n",
dv->devname, strerror(errno));
- free(super);
+ st->ss->free_super(st, super);
return 1;
}
if (dv == moved_disk && dnum != insert_point) break;
}
}
- free(super);
+ st->ss->free_super(st, super);
/* param is not actually used */
if (runstop == 1 || subdevs >= raiddisks) {
if (ioctl(mdfd, RUN_ARRAY, ¶m)) {
fprintf(stderr, Name ": RUN_ARRAY failed: %s\n",
strerror(errno));
- Manage_runstop(mddev, mdfd, -1);
+ Manage_runstop(mddev, mdfd, -1, 0);
return 1;
}
- fprintf(stderr, Name ": array %s started.\n", mddev);
+ if (verbose >= 0)
+ fprintf(stderr, Name ": array %s started.\n", mddev);
} else {
fprintf(stderr, Name ": not starting array - not enough devices.\n");
}
projects / thirdparty / mdadm.git / blobdiff