/*
* 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,
- char *name,
+ int chunk, int level, int layout, unsigned long long size, int raiddisks, int sparedisks,
+ char *name, char *homehost,
int subdevs, mddev_dev_t devlist,
- int runstop, int verbose, int force,
+ int runstop, int verbose, int force, int assume_clean,
char *bitmap_file, int bitmap_chunk, int write_behind, int delay)
{
/*
int vers;
int rv;
int bitmap_fd;
+ unsigned long long bitmapsize;
mdu_array_info_t array;
int major = 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");
ldsize = dsize;
ldsize <<= 9;
}
+ if (st == NULL) {
+ struct createinfo *ci = conf_get_create_info();
+ if (ci)
+ st = ci->supertype;
+ }
+ 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 verion %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",
}
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;
}
if (level > 0 || level == LEVEL_MULTIPATH || level == LEVEL_FAULTY) {
/* size is meaningful */
- if (minsize > 0x100000000ULL) {
+ 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 > 0)
- fprintf(stderr, Name ": size set to %luK\n", size);
+ fprintf(stderr, Name ": size set to %lluK\n", size);
}
}
if (level > 0 && ((maxsize-size)*100 > maxsize)) {
if (runstop != 1 || verbose >= 0)
- fprintf(stderr, Name ": largest drive (%s) exceed size (%luK) by more than 1%%\n",
+ fprintf(stderr, Name ": largest drive (%s) exceed size (%lluK) by more than 1%%\n",
maxdisc, size);
warn = 1;
}
* 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 5:
insert_point = raiddisks-1;
(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) * (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;
-
-
- if (!st->ss->init_super(st, &super, &array, name))
+ array.major_version = st->ss->major;
+
+ 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))
return 1;
if (bitmap_file && vers < 9003) {
return 1;
}
if (!st->ss->add_internal_bitmap(st, super, bitmap_chunk, delay, write_behind,
- &array.size, 1, major)) {
+ bitmapsize, 1, major)) {
fprintf(stderr, Name ": Given bitmap chunk size not supported.\n");
return 1;
}
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, write_behind,
- array.size*2ULL /* FIXME wrong for raid10 */,
+ bitmapsize,
major)) {
return 1;
}
fstat(fd, &stb);
disk.major = major(stb.st_rdev);
disk.minor = minor(stb.st_rdev);
+ remove_partitions(fd);
close(fd);
}
switch(pass){
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)) {
projects / thirdparty / mdadm.git / blobdiff