summaryrefslogtreecommitdiffstats
path: root/super1.c
diff options
context:
space:
mode:
Diffstat (limited to 'super1.c')
-rw-r--r--super1.c355
1 files changed, 225 insertions, 130 deletions
diff --git a/super1.c b/super1.c
index 62a3ab9..4cfd786 100644
--- a/super1.c
+++ b/super1.c
@@ -454,12 +454,6 @@ static void export_detail_super1(struct supertype *st)
}
if (len)
printf("MD_NAME=%.*s\n", len, sb->set_name);
- printf("MD_UUID=");
- for (i=0; i<16; i++) {
- if ((i&3)==0 && i != 0) printf(":");
- printf("%02x", sb->set_uuid[i]);
- }
- printf("\n");
}
#endif
@@ -491,7 +485,7 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info)
int role;
info->array.major_version = 1;
- info->array.minor_version = __le32_to_cpu(sb->feature_map);
+ info->array.minor_version = st->minor_version;
info->array.patch_version = 0;
info->array.raid_disks = __le32_to_cpu(sb->raid_disks);
info->array.level = __le32_to_cpu(sb->level);
@@ -529,6 +523,8 @@ static void getinfo_super1(struct supertype *st, struct mdinfo *info)
info->disk.raid_disk = role;
}
info->events = __le64_to_cpu(sb->events);
+ sprintf(info->text_version, "1.%d", st->minor_version);
+ info->safe_mode_delay = 200;
memcpy(info->uuid, sb->set_uuid, 16);
@@ -687,7 +683,7 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
__le64_to_cpu(sb->data_offset)) {
/* set data_size to device size less data_offset */
struct misc_dev_info *misc = (struct misc_dev_info*)
- (st->sb + 1024 + sizeof(struct bitmap_super_s));
+ (st->sb + 1024 + 512);
printf("Size was %llu\n", (unsigned long long)
__le64_to_cpu(sb->data_size));
sb->data_size = __cpu_to_le64(
@@ -705,15 +701,21 @@ static int update_super1(struct supertype *st, struct mdinfo *info,
static int init_super1(struct supertype *st, mdu_array_info_t *info,
unsigned long long size, char *name, char *homehost, int *uuid)
{
- struct mdp_superblock_1 *sb = malloc(1024 + sizeof(bitmap_super_t) +
- sizeof(struct misc_dev_info));
+ struct mdp_superblock_1 *sb;
int spares;
int rfd;
char defname[10];
+
+ if (posix_memalign((void**)&sb, 512, (1024 + 512 +
+ sizeof(struct misc_dev_info))) != 0) {
+ fprintf(stderr, Name
+ ": %s could not allocate superblock\n", __func__);
+ return 0;
+ }
memset(sb, 0, 1024);
st->sb = sb;
- if (info->major_version == -1) {
+ if (info == NULL) {
/* zeroing superblock */
return 0;
}
@@ -784,18 +786,42 @@ static int init_super1(struct supertype *st, mdu_array_info_t *info,
return 1;
}
+struct devinfo {
+ int fd;
+ char *devname;
+ mdu_disk_info_t disk;
+ struct devinfo *next;
+};
+#ifndef MDASSEMBLE
/* Add a device to the superblock being created */
-static void add_to_super1(struct supertype *st, mdu_disk_info_t *dk)
+static void add_to_super1(struct supertype *st, mdu_disk_info_t *dk,
+ int fd, char *devname)
{
struct mdp_superblock_1 *sb = st->sb;
__u16 *rp = sb->dev_roles + dk->number;
+ struct devinfo *di, **dip;
+
if ((dk->state & 6) == 6) /* active, sync */
*rp = __cpu_to_le16(dk->raid_disk);
else if ((dk->state & ~2) == 0) /* active or idle -> spare */
*rp = 0xffff;
else
*rp = 0xfffe;
+
+ sb->dev_number = __cpu_to_le32(dk->number);
+ sb->sb_csum = calc_sb_1_csum(sb);
+
+ dip = (struct devinfo **)&st->info;
+ while (*dip)
+ dip = &(*dip)->next;
+ di = malloc(sizeof(struct devinfo));
+ di->fd = fd;
+ di->devname = devname;
+ di->disk = *dk;
+ di->next = NULL;
+ *dip = di;
}
+#endif
static void locate_bitmap1(struct supertype *st, int fd);
@@ -851,6 +877,7 @@ static int store_super1(struct supertype *st, int fd)
return 3;
sbsize = sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev);
+ sbsize = (sbsize+511)&(~511UL);
if (write(fd, sb, sbsize) != sbsize)
return 4;
@@ -860,7 +887,8 @@ static int store_super1(struct supertype *st, int fd)
(((char*)sb)+1024);
if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) {
locate_bitmap1(st, fd);
- if (write(fd, bm, sizeof(*bm)) != sizeof(*bm))
+ if (write(fd, bm, ROUND_UP(sizeof(*bm),512)) !=
+ ROUND_UP(sizeof(*bm),512))
return 5;
}
}
@@ -883,123 +911,133 @@ static unsigned long choose_bm_space(unsigned long devsize)
return 4*2;
}
-static int write_init_super1(struct supertype *st,
- mdu_disk_info_t *dinfo, char *devname)
+#ifndef MDASSEMBLE
+static int write_init_super1(struct supertype *st)
{
struct mdp_superblock_1 *sb = st->sb;
struct supertype refst;
- int fd = open(devname, O_RDWR | O_EXCL);
int rfd;
- int rv;
+ int rv = 0;
int bm_space;
-
+ struct devinfo *di;
unsigned long long dsize, array_size;
long long sb_offset;
+ for (di = st->info; di && ! rv ; di = di->next) {
+ if (di->disk.state == 1)
+ continue;
+ if (di->fd < 0)
+ continue;
- if (fd < 0) {
- fprintf(stderr, Name ": Failed to open %s to write superblock\n",
- devname);
- return -1;
- }
+ Kill(di->devname, 0, 1, 1);
+ Kill(di->devname, 0, 1, 1);
- sb->dev_number = __cpu_to_le32(dinfo->number);
- if (dinfo->state & (1<<MD_DISK_WRITEMOSTLY))
- sb->devflags |= __cpu_to_le32(WriteMostly1);
+ sb->dev_number = __cpu_to_le32(di->disk.number);
+ if (di->disk.state & (1<<MD_DISK_WRITEMOSTLY))
+ sb->devflags |= __cpu_to_le32(WriteMostly1);
- if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 ||
- read(rfd, sb->device_uuid, 16) != 16) {
- *(__u32*)(sb->device_uuid) = random();
- *(__u32*)(sb->device_uuid+4) = random();
- *(__u32*)(sb->device_uuid+8) = random();
- *(__u32*)(sb->device_uuid+12) = random();
- }
- if (rfd >= 0) close(rfd);
- sb->events = 0;
-
- refst =*st;
- refst.sb = NULL;
- if (load_super1(&refst, fd, NULL)==0) {
- struct mdp_superblock_1 *refsb = refst.sb;
-
- memcpy(sb->device_uuid, refsb->device_uuid, 16);
- if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) {
- /* same array, so preserve events and dev_number */
- sb->events = refsb->events;
- /* bugs in 2.6.17 and earlier mean the dev_number
- * chosen in Manage must be preserved
- */
- if (get_linux_version() >= 2006018)
- sb->dev_number = refsb->dev_number;
+ if ((rfd = open("/dev/urandom", O_RDONLY)) < 0 ||
+ read(rfd, sb->device_uuid, 16) != 16) {
+ *(__u32*)(sb->device_uuid) = random();
+ *(__u32*)(sb->device_uuid+4) = random();
+ *(__u32*)(sb->device_uuid+8) = random();
+ *(__u32*)(sb->device_uuid+12) = random();
+ }
+ if (rfd >= 0) close(rfd);
+ sb->events = 0;
+
+ refst =*st;
+ refst.sb = NULL;
+ if (load_super1(&refst, di->fd, NULL)==0) {
+ struct mdp_superblock_1 *refsb = refst.sb;
+
+ memcpy(sb->device_uuid, refsb->device_uuid, 16);
+ if (memcmp(sb->set_uuid, refsb->set_uuid, 16)==0) {
+ /* same array, so preserve events and
+ * dev_number */
+ sb->events = refsb->events;
+ /* bugs in 2.6.17 and earlier mean the
+ * dev_number chosen in Manage must be preserved
+ */
+ if (get_linux_version() >= 2006018)
+ sb->dev_number = refsb->dev_number;
+ }
+ free(refsb);
}
- free(refsb);
- }
-
- if (!get_dev_size(fd, NULL, &dsize))
- return 1;
- dsize >>= 9;
- if (dsize < 24) {
- close(fd);
- return 2;
- }
+ if (!get_dev_size(di->fd, NULL, &dsize))
+ return 1;
+ dsize >>= 9;
+ if (dsize < 24) {
+ close(di->fd);
+ return 2;
+ }
- /*
- * Calculate the position of the superblock.
- * It is always aligned to a 4K boundary and
- * depending on minor_version, it can be:
- * 0: At least 8K, but less than 12K, from end of device
- * 1: At start of device
- * 2: 4K from start of device.
- * Depending on the array size, we might leave extra space
- * for a bitmap.
- */
- array_size = __le64_to_cpu(sb->size);
- /* work out how much space we left for a bitmap */
- bm_space = choose_bm_space(array_size);
- switch(st->minor_version) {
- case 0:
- sb_offset = dsize;
- sb_offset -= 8*2;
- sb_offset &= ~(4*2-1);
- sb->super_offset = __cpu_to_le64(sb_offset);
- sb->data_offset = __cpu_to_le64(0);
+ /*
+ * Calculate the position of the superblock.
+ * It is always aligned to a 4K boundary and
+ * depending on minor_version, it can be:
+ * 0: At least 8K, but less than 12K, from end of device
+ * 1: At start of device
+ * 2: 4K from start of device.
+ * Depending on the array size, we might leave extra space
+ * for a bitmap.
+ */
+ array_size = __le64_to_cpu(sb->size);
+ /* work out how much space we left for a bitmap */
+ bm_space = choose_bm_space(array_size);
+
+ switch(st->minor_version) {
+ case 0:
+ sb_offset = dsize;
+ sb_offset -= 8*2;
+ sb_offset &= ~(4*2-1);
+ sb->super_offset = __cpu_to_le64(sb_offset);
+ sb->data_offset = __cpu_to_le64(0);
if (sb_offset - bm_space < array_size)
bm_space = sb_offset - array_size;
- sb->data_size = __cpu_to_le64(sb_offset - bm_space);
- break;
- case 1:
- sb->super_offset = __cpu_to_le64(0);
- if (4*2 + bm_space + __le64_to_cpu(sb->size) > dsize)
- bm_space = dsize - __le64_to_cpu(sb->size) - 4*2;
- sb->data_offset = __cpu_to_le64(bm_space + 4*2);
- sb->data_size = __cpu_to_le64(dsize - bm_space - 4*2);
- break;
- case 2:
- sb_offset = 4*2;
- sb->super_offset = __cpu_to_le64(4*2);
- if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size) > dsize)
- bm_space = dsize - __le64_to_cpu(sb->size) - 4*2 - 4*2;
- sb->data_offset = __cpu_to_le64(4*2 + 4*2 + bm_space);
- sb->data_size = __cpu_to_le64(dsize - 4*2 - 4*2 - bm_space );
- break;
- default:
- return -EINVAL;
- }
+ sb->data_size = __cpu_to_le64(sb_offset - bm_space);
+ break;
+ case 1:
+ sb->super_offset = __cpu_to_le64(0);
+ if (4*2 + bm_space + __le64_to_cpu(sb->size) > dsize)
+ bm_space = dsize - __le64_to_cpu(sb->size) -4*2;
+ sb->data_offset = __cpu_to_le64(bm_space + 4*2);
+ sb->data_size = __cpu_to_le64(dsize - bm_space - 4*2);
+ break;
+ case 2:
+ sb_offset = 4*2;
+ sb->super_offset = __cpu_to_le64(4*2);
+ if (4*2 + 4*2 + bm_space + __le64_to_cpu(sb->size)
+ > dsize)
+ bm_space = dsize - __le64_to_cpu(sb->size)
+ - 4*2 - 4*2;
+ sb->data_offset = __cpu_to_le64(4*2 + 4*2 + bm_space);
+ sb->data_size = __cpu_to_le64(dsize - 4*2 - 4*2
+ - bm_space );
+ break;
+ default:
+ return -EINVAL;
+ }
- sb->sb_csum = calc_sb_1_csum(sb);
- rv = store_super1(st, fd);
- if (rv)
- fprintf(stderr, Name ": failed to write superblock to %s\n", devname);
+ sb->sb_csum = calc_sb_1_csum(sb);
+ rv = store_super1(st, di->fd);
+ if (rv)
+ fprintf(stderr,
+ Name ": failed to write superblock to %s\n",
+ di->devname);
- if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1))
- rv = st->ss->write_bitmap(st, fd);
- close(fd);
+ if (rv == 0 && (__le32_to_cpu(sb->feature_map) & 1))
+ rv = st->ss->write_bitmap(st, di->fd);
+ close(di->fd);
+ di->fd = -1;
+ }
return rv;
}
+#endif
static int compare_super1(struct supertype *st, struct supertype *tst)
{
@@ -1019,9 +1057,14 @@ static int compare_super1(struct supertype *st, struct supertype *tst)
return 1;
if (!first) {
- first = malloc(1024+sizeof(bitmap_super_t) +
- sizeof(struct misc_dev_info));
- memcpy(first, second, 1024+sizeof(bitmap_super_t) +
+ if (posix_memalign((void**)&first, 512,
+ 1024 + 512 +
+ sizeof(struct misc_dev_info)) != 0) {
+ fprintf(stderr, Name
+ ": %s could not allocate superblock\n", __func__);
+ return 1;
+ }
+ memcpy(first, second, 1024 + 512 +
sizeof(struct misc_dev_info));
st->sb = first;
return 0;
@@ -1052,13 +1095,16 @@ static int load_super1(struct supertype *st, int fd, char *devname)
free_super1(st);
+ if (st->subarray[0])
+ return 1;
+
if (st->ss == NULL || st->minor_version == -1) {
int bestvers = -1;
struct supertype tst;
__u64 bestctime = 0;
/* guess... choose latest ctime */
+ memset(&tst, 0, sizeof(tst));
tst.ss = &super1;
- tst.sb = NULL;
for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) {
switch(load_super1(&tst, fd, devname)) {
case 0: super = tst.sb;
@@ -1131,8 +1177,13 @@ static int load_super1(struct supertype *st, int fd, char *devname)
return 1;
}
- super = malloc(1024 + sizeof(bitmap_super_t) +
- sizeof(struct misc_dev_info));
+ if (posix_memalign((void**)&super, 512,
+ 1024 + 512 +
+ sizeof(struct misc_dev_info)) != 0) {
+ fprintf(stderr, Name ": %s could not allocate superblock\n",
+ __func__);
+ return 1;
+ }
if (read(fd, super, 1024) != 1024) {
if (devname)
@@ -1168,7 +1219,7 @@ static int load_super1(struct supertype *st, int fd, char *devname)
bsb = (struct bitmap_super_s *)(((char*)super)+1024);
- misc = (struct misc_dev_info*) (bsb+1);
+ misc = (struct misc_dev_info*) (((char*)super)+1024+512);
misc->device_size = dsize;
/* Now check on the bitmap superblock */
@@ -1179,8 +1230,8 @@ static int load_super1(struct supertype *st, int fd, char *devname)
* should get that written out.
*/
locate_bitmap1(st, fd);
- if (read(fd, ((char*)super)+1024, sizeof(struct bitmap_super_s))
- != sizeof(struct bitmap_super_s))
+ if (read(fd, ((char*)super)+1024, 512)
+ != 512)
goto no_bitmap;
uuid_from_super1(st, uuid);
@@ -1200,23 +1251,30 @@ static struct supertype *match_metadata_desc1(char *arg)
struct supertype *st = malloc(sizeof(*st));
if (!st) return st;
+ memset(st, 0, sizeof(*st));
st->ss = &super1;
st->max_devs = 384;
st->sb = NULL;
- if (strcmp(arg, "1.0") == 0) {
+ /* leading zeros can be safely ignored. --detail generates them. */
+ while (*arg == '0')
+ arg++;
+ if (strcmp(arg, "1.0") == 0 ||
+ strcmp(arg, "1.00") == 0) {
st->minor_version = 0;
return st;
}
- if (strcmp(arg, "1.1") == 0) {
+ if (strcmp(arg, "1.1") == 0 ||
+ strcmp(arg, "1.01") == 0) {
st->minor_version = 1;
return st;
}
- if (strcmp(arg, "1.2") == 0) {
+ if (strcmp(arg, "1.2") == 0 ||
+ strcmp(arg, "1.02") == 0) {
st->minor_version = 2;
return st;
}
if (strcmp(arg, "1") == 0 ||
- strcmp(arg, "default/large") == 0) {
+ strcmp(arg, "default") == 0) {
st->minor_version = -1;
return st;
}
@@ -1410,25 +1468,28 @@ static int write_bitmap1(struct supertype *st, int fd)
int rv = 0;
int towrite, n;
- char buf[4096];
+ char abuf[4096+512];
+ char *buf = (char*)(((long)(abuf+512))&~511UL);
locate_bitmap1(st, fd);
- if (write(fd, ((char*)sb)+1024, sizeof(bitmap_super_t)) !=
- sizeof(bitmap_super_t))
- return -2;
+ memset(buf, 0xff, 4096);
+ memcpy(buf, ((char*)sb)+1024, sizeof(bitmap_super_t));
+
towrite = __le64_to_cpu(bms->sync_size) / (__le32_to_cpu(bms->chunksize)>>9);
towrite = (towrite+7) >> 3; /* bits to bytes */
- memset(buf, 0xff, sizeof(buf));
+ towrite += sizeof(bitmap_super_t);
+ towrite = ROUND_UP(towrite, 512);
while (towrite > 0) {
n = towrite;
- if (n > sizeof(buf))
- n = sizeof(buf);
+ if (n > 4096)
+ n = 4096;
n = write(fd, buf, n);
if (n > 0)
towrite -= n;
else
break;
+ memset(buf, 0xff, 4096);
}
fsync(fd);
if (towrite)
@@ -1444,6 +1505,40 @@ static void free_super1(struct supertype *st)
st->sb = NULL;
}
+#ifndef MDASSEMBLE
+static int validate_geometry1(struct supertype *st, int level,
+ int layout, int raiddisks,
+ int chunk, unsigned long long size,
+ char *subdev, unsigned long long *freesize,
+ int verbose)
+{
+ unsigned long long ldsize;
+ int fd;
+
+ if (level == LEVEL_CONTAINER)
+ return 0;
+ if (!subdev)
+ return 1;
+
+ fd = open(subdev, O_RDONLY|O_EXCL, 0);
+ if (fd < 0) {
+ if (verbose)
+ fprintf(stderr, Name ": super1.x cannot open %s: %s\n",
+ subdev, strerror(errno));
+ return 0;
+ }
+
+ if (!get_dev_size(fd, subdev, &ldsize)) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ *freesize = avail_size1(st, ldsize >> 9);
+ return 1;
+}
+#endif /* MDASSEMBLE */
+
struct superswitch super1 = {
#ifndef MDASSEMBLE
.examine_super = examine_super1,
@@ -1452,15 +1547,16 @@ struct superswitch super1 = {
.detail_super = detail_super1,
.brief_detail_super = brief_detail_super1,
.export_detail_super = export_detail_super1,
+ .write_init_super = write_init_super1,
+ .validate_geometry = validate_geometry1,
+ .add_to_super = add_to_super1,
#endif
.match_home = match_home1,
.uuid_from_super = uuid_from_super1,
.getinfo_super = getinfo_super1,
.update_super = update_super1,
.init_super = init_super1,
- .add_to_super = add_to_super1,
.store_super = store_super1,
- .write_init_super = write_init_super1,
.compare_super = compare_super1,
.load_super = load_super1,
.match_metadata_desc = match_metadata_desc1,
@@ -1469,7 +1565,6 @@ struct superswitch super1 = {
.locate_bitmap = locate_bitmap1,
.write_bitmap = write_bitmap1,
.free_super = free_super1,
- .major = 1,
#if __BYTE_ORDER == BIG_ENDIAN
.swapuuid = 0,
#else
generated by cgit (git 2.34.1) at 2024-06-24 15:22:12 +0000