return __cpu_to_le32(csum);
}
+static char abuf[4096+4096];
+static int aread(int fd, void *buf, int len)
+{
+ /* aligned read.
+ * On devices with a 4K sector size, we need to read
+ * the full sector and copy relevant bits into
+ * the buffer
+ */
+ int bsize;
+ char *b;
+ int n;
+ if (ioctl(fd, BLKSSZGET, &bsize) != 0 ||
+ bsize <= len)
+ return read(fd, buf, len);
+ if (bsize > 4096)
+ return -1;
+ b = (char*)(((long)(abuf+4096))&~4095UL);
+
+ n = read(fd, b, bsize);
+ if (n <= 0)
+ return n;
+ lseek(fd, len - n, 1);
+ if (n > len)
+ n = len;
+ memcpy(buf, b, n);
+ return n;
+}
+
+static int awrite(int fd, void *buf, int len)
+{
+ /* aligned write.
+ * On devices with a 4K sector size, we need to write
+ * the full sector. We pre-read if the sector is larger
+ * than the write.
+ * The address must be sector-aligned.
+ */
+ int bsize;
+ char *b;
+ int n;
+ if (ioctl(fd, BLKSSZGET, &bsize) != 0 ||
+ bsize <= len)
+ return write(fd, buf, len);
+ if (bsize > 4096)
+ return -1;
+ b = (char*)(((long)(abuf+4096))&~4095UL);
+
+ n = read(fd, b, bsize);
+ if (n <= 0)
+ return n;
+ lseek(fd, -n, 1);
+ memcpy(b, buf, len);
+ n = write(fd, b, bsize);
+ if (n <= 0)
+ return n;
+ lseek(fd, len - n, 1);
+ return len;
+}
+
#ifndef MDASSEMBLE
-static void examine_super1(void *sbv, char *homehost)
+static void examine_super1(struct supertype *st, char *homehost)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
time_t atime;
int d;
- int faulty;
+ int role;
int i;
char *c;
int l = homehost ? strlen(homehost) : 0;
int layout;
+ unsigned long long sb_offset;
printf(" Magic : %08x\n", __le32_to_cpu(sb->magic));
- printf(" Version : %02d\n", 1);
+ printf(" Version : 1");
+ sb_offset = __le64_to_cpu(sb->super_offset);
+ if (sb_offset <= 4)
+ printf(".1\n");
+ else if (sb_offset <= 8)
+ printf(".2\n");
+ else
+ printf(".0\n");
printf(" Feature Map : 0x%x\n", __le32_to_cpu(sb->feature_map));
printf(" Array UUID : ");
for (i=0; i<16; i++) {
printf(" Raid Level : %s\n", c?c:"-unknown-");
printf(" Raid Devices : %d\n", __le32_to_cpu(sb->raid_disks));
printf("\n");
- printf(" Used Dev Size : %llu%s\n",
- (unsigned long long)sb->data_size,
- human_size(sb->data_size<<9));
+ printf(" Avail Dev Size : %llu%s\n",
+ (unsigned long long)__le64_to_cpu(sb->data_size),
+ human_size(__le64_to_cpu(sb->data_size)<<9));
if (__le32_to_cpu(sb->level) >= 0) {
int ddsks=0;
switch(__le32_to_cpu(sb->level)) {
ddsks*(unsigned long long)__le64_to_cpu(sb->size),
human_size(ddsks*__le64_to_cpu(sb->size)<<9));
if (sb->size != sb->data_size)
- printf(" Used Size : %llu%s\n",
+ printf(" Used Dev Size : %llu%s\n",
(unsigned long long)__le64_to_cpu(sb->size),
human_size(__le64_to_cpu(sb->size)<<9));
}
printf("\n");
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
printf("Internal Bitmap : %ld sectors from superblock\n",
- (long)__le32_to_cpu(sb->bitmap_offset));
+ (long)(int32_t)__le32_to_cpu(sb->bitmap_offset));
}
if (sb->feature_map & __le32_to_cpu(MD_FEATURE_RESHAPE_ACTIVE)) {
printf(" Reshape pos'n : %llu%s\n", (unsigned long long)__le64_to_cpu(sb->reshape_position)/2,
printf(" New Layout : %s\n", c?c:"-unknown-");
}
if (__le32_to_cpu(sb->level) == 10) {
- printf(" New Layout : near=%d, %s=%d\n",
- __le32_to_cpu(sb->new_layout)&255,
- (__le32_to_cpu(sb->new_layout)&0x10000)?"offset":"far",
- (__le32_to_cpu(sb->new_layout)>>8)&255);
+ printf(" New Layout :");
+ print_r10_layout(__le32_to_cpu(sb->new_layout));
+ printf("\n");
}
}
if (__le32_to_cpu(sb->new_chunk) != __le32_to_cpu(sb->chunksize))
}
if (__le32_to_cpu(sb->level) == 10) {
int lo = __le32_to_cpu(sb->layout);
- printf(" Layout : near=%d, %s=%d\n",
- lo&255,
- (lo&0x10000)?"offset":"far",
- (lo>>8)&255);
+ printf(" Layout :");
+ print_r10_layout(lo);
+ printf("\n");
}
switch(__le32_to_cpu(sb->level)) {
case 0:
default: break;
}
printf("\n");
+#if 0
+ /* This turns out to just be confusing */
printf(" Array Slot : %d (", __le32_to_cpu(sb->dev_number));
for (i= __le32_to_cpu(sb->max_dev); i> 0 ; i--)
if (__le16_to_cpu(sb->dev_roles[i-1]) != 0xffff)
else printf("%d", role);
}
printf(")\n");
+#endif
+ printf(" Device Role : ");
+ d = __le32_to_cpu(sb->dev_number);
+ if (d < sb->raid_disks)
+ role = __le16_to_cpu(sb->dev_roles[d]);
+ else
+ role = 0xFFFF;
+ if (role >= 0xFFFE)
+ printf("spare\n");
+ else
+ printf("Active device %d\n", role);
+
printf(" Array State : ");
for (d=0; d<__le32_to_cpu(sb->raid_disks); d++) {
int cnt = 0;
}
}
if (cnt > 1) printf("?");
- else if (cnt == 1 && me) printf("U");
- else if (cnt == 1) printf("u");
- else printf ("_");
+ else if (cnt == 1) printf("A");
+ else printf (".");
}
+#if 0
+ /* This is confusing too */
faulty = 0;
for (i=0; i< __le32_to_cpu(sb->max_dev); i++) {
int role = __le16_to_cpu(sb->dev_roles[i]);
faulty++;
}
if (faulty) printf(" %d failed", faulty);
+#endif
+ printf(" ('A' == active, '.' == missing)");
printf("\n");
}
-static void brief_examine_super1(void *sbv)
+static void brief_examine_super1(struct supertype *st)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
int i;
+ unsigned long long sb_offset;
char *nm;
char *c=map_num(pers, __le32_to_cpu(sb->level));
else if (sb->set_name[0])
nm = sb->set_name;
else
- nm = "??";
-
- printf("ARRAY /dev/md/%s level=%s metadata=1 num-devices=%d UUID=",
- nm,
- c?c:"-unknown-", __le32_to_cpu(sb->raid_disks));
+ nm = NULL;
+
+ printf("ARRAY%s%s level=%s ",
+ nm ? " /dev/md/":"", nm,
+ c?c:"-unknown-");
+ sb_offset = __le64_to_cpu(sb->super_offset);
+ if (sb_offset <= 4)
+ printf("metadata=1.1 ");
+ else if (sb_offset <= 8)
+ printf("metadata=1.2 ");
+ else
+ printf("metadata=1.0 ");
+ printf("num-devices=%d UUID=", __le32_to_cpu(sb->raid_disks));
for (i=0; i<16; i++) {
if ((i&3)==0 && i != 0) printf(":");
printf("%02x", sb->set_uuid[i]);
printf("\n");
}
-static void detail_super1(void *sbv, char *homehost)
+static void export_examine_super1(struct supertype *st)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
+ int i;
+ int len = 32;
+
+ printf("MD_LEVEL=%s\n", map_num(pers, __le32_to_cpu(sb->level)));
+ printf("MD_DEVICES=%d\n", __le32_to_cpu(sb->raid_disks));
+ for (i=0; i<32; i++)
+ if (sb->set_name[i] == '\n' ||
+ sb->set_name[i] == '\0') {
+ len = i;
+ break;
+ }
+ 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");
+ printf("MD_UPDATE_TIME=%llu\n",
+ __le64_to_cpu(sb->utime) & 0xFFFFFFFFFFULL);
+ printf("MD_DEV_UUID=");
+ for (i=0; i<16; i++) {
+ if ((i&3)==0 && i != 0) printf(":");
+ printf("%02x", sb->device_uuid[i]);
+ }
+ printf("\n");
+ printf("MD_EVENTS=%llu\n",
+ (unsigned long long)__le64_to_cpu(sb->events));
+}
+
+static void detail_super1(struct supertype *st, char *homehost)
+{
+ struct mdp_superblock_1 *sb = st->sb;
int i;
int l = homehost ? strlen(homehost) : 0;
printf("\n Events : %llu\n\n", (unsigned long long)__le64_to_cpu(sb->events));
}
-static void brief_detail_super1(void *sbv)
+static void brief_detail_super1(struct supertype *st)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
int i;
if (sb->set_name[0])
}
}
+static void export_detail_super1(struct supertype *st)
+{
+ struct mdp_superblock_1 *sb = st->sb;
+ int i;
+ int len = 32;
+
+ for (i=0; i<32; i++)
+ if (sb->set_name[i] == '\n' ||
+ sb->set_name[i] == '\0') {
+ len = i;
+ break;
+ }
+ if (len)
+ printf("MD_NAME=%.*s\n", len, sb->set_name);
+}
+
#endif
-static int match_home1(void *sbv, char *homehost)
+static int match_home1(struct supertype *st, char *homehost)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
int l = homehost ? strlen(homehost) : 0;
return (l > 0 && l < 32 &&
strncmp(sb->set_name, homehost, l) == 0);
}
-static void uuid_from_super1(int uuid[4], void * sbv)
+static void uuid_from_super1(struct supertype *st, int uuid[4])
{
- struct mdp_superblock_1 *super = sbv;
+ struct mdp_superblock_1 *super = st->sb;
char *cuuid = (char*)uuid;
int i;
for (i=0; i<16; i++)
cuuid[i] = super->set_uuid[i];
}
-static void getinfo_super1(struct mdinfo *info, void *sbv)
+static void getinfo_super1(struct supertype *st, struct mdinfo *info)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
int working = 0;
int i;
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);
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);
info->array.working_disks = working;
}
-static int update_super1(struct mdinfo *info, void *sbv, char *update,
+static int update_super1(struct supertype *st, struct mdinfo *info,
+ char *update,
char *devname, int verbose,
int uuid_set, char *homehost)
{
* For others, the return value is ignored.
*/
int rv = 0;
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
if (strcmp(update, "force-one")==0) {
/* Not enough devices for a working array,
rv = 1;
}
}
- if (strcmp(update, "grow") == 0) {
+ if (strcmp(update, "linear-grow-new") == 0) {
+ int i;
+ int rfd, fd;
+ int max = __le32_to_cpu(sb->max_dev);
+
+ for (i=0 ; i < max ; i++)
+ if (__le16_to_cpu(sb->dev_roles[i]) >= 0xfffe)
+ break;
+ sb->dev_number = __cpu_to_le32(i);
+ info->disk.number = i;
+ if (max >= __le32_to_cpu(sb->max_dev))
+ sb->max_dev = __cpu_to_le32(max+1);
+
+ 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();
+ }
+
+ sb->dev_roles[i] =
+ __cpu_to_le16(info->disk.raid_disk);
+
+ fd = open(devname, O_RDONLY);
+ if (fd >= 0) {
+ unsigned long long ds;
+ get_dev_size(fd, devname, &ds);
+ close(fd);
+ ds >>= 9;
+ if (__le64_to_cpu(sb->super_offset) <
+ __le64_to_cpu(sb->data_offset)) {
+ sb->data_size = __cpu_to_le64(
+ ds - __le64_to_cpu(sb->data_offset));
+ } else {
+ ds -= 8*2;
+ ds &= ~(unsigned long long)(4*2-1);
+ sb->super_offset = __cpu_to_le64(ds);
+ sb->data_size = __cpu_to_le64(
+ ds - __le64_to_cpu(sb->data_offset));
+ }
+ }
+ }
+ if (strcmp(update, "linear-grow-update") == 0) {
sb->raid_disks = __cpu_to_le32(info->array.raid_disks);
- /* As we are just adding a spare, there is no need to
- * make any change to the dev_roles array
- */
+ sb->dev_roles[info->disk.number] =
+ __cpu_to_le16(info->disk.raid_disk);
}
if (strcmp(update, "resync") == 0) {
/* make sure resync happens */
if (__le32_to_cpu(sb->feature_map)&MD_FEATURE_BITMAP_OFFSET) {
struct bitmap_super_s *bm;
- bm = (struct bitmap_super_s*)(sbv+1024);
+ bm = (struct bitmap_super_s*)(st->sb+1024);
memcpy(bm->uuid, sb->set_uuid, 16);
}
}
__le64_to_cpu(sb->data_offset)) {
/* set data_size to device size less data_offset */
struct misc_dev_info *misc = (struct misc_dev_info*)
- (sbv + 1024 + sizeof(struct bitmap_super_s));
- printf("Size was %llu\n", __le64_to_cpu(sb->data_size));
+ (st->sb + 1024 + 512);
+ printf("Size was %llu\n", (unsigned long long)
+ __le64_to_cpu(sb->data_size));
sb->data_size = __cpu_to_le64(
misc->device_size - __le64_to_cpu(sb->data_offset));
- printf("Size is %llu\n", __le64_to_cpu(sb->data_size));
+ printf("Size is %llu\n", (unsigned long long)
+ __le64_to_cpu(sb->data_size));
}
if (strcmp(update, "_reshape_progress")==0)
sb->reshape_position = __cpu_to_le64(info->reshape_progress);
return rv;
}
-static int init_super1(struct supertype *st, void **sbp, mdu_array_info_t *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);
- if (info->major_version == -1) {
+ st->sb = sb;
+ if (info == NULL) {
/* zeroing superblock */
- *sbp = sb;
return 0;
}
memset(sb->dev_roles, 0xff, 1024 - sizeof(struct mdp_superblock_1));
- *sbp = sb;
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(void *sbv, mdu_disk_info_t *dk)
+static int add_to_super1(struct supertype *st, mdu_disk_info_t *dk,
+ int fd, char *devname)
{
- struct mdp_superblock_1 *sb = sbv;
+ 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;
+
+ if (dk->number >= __le32_to_cpu(sb->max_dev) &&
+ __le32_to_cpu(sb->max_dev) < 384)
+ sb->max_dev = __cpu_to_le32(dk->number+1);
+
+ 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;
+
+ return 0;
}
+#endif
-static void locate_bitmap1(struct supertype *st, int fd, void *sbv);
+static void locate_bitmap1(struct supertype *st, int fd);
-static int store_super1(struct supertype *st, int fd, void *sbv)
+static int store_super1(struct supertype *st, int fd)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
unsigned long long sb_offset;
int sbsize;
unsigned long long dsize;
return 3;
sbsize = sizeof(*sb) + 2 * __le32_to_cpu(sb->max_dev);
+ sbsize = (sbsize+511)&(~511UL);
- if (write(fd, sb, sbsize) != sbsize)
+ if (awrite(fd, sb, sbsize) != sbsize)
return 4;
if (sb->feature_map & __cpu_to_le32(MD_FEATURE_BITMAP_OFFSET)) {
struct bitmap_super_s *bm = (struct bitmap_super_s*)
(((char*)sb)+1024);
if (__le32_to_cpu(bm->magic) == BITMAP_MAGIC) {
- locate_bitmap1(st, fd, sbv);
- if (write(fd, bm, sizeof(*bm)) != sizeof(*bm))
+ locate_bitmap1(st, fd);
+ if (awrite(fd, bm, sizeof(*bm)) !=
+ sizeof(*bm))
return 5;
}
}
return 0;
}
-static int load_super1(struct supertype *st, int fd, void **sbp, char *devname);
+static int load_super1(struct supertype *st, int fd, char *devname);
-static int write_init_super1(struct supertype *st, void *sbv,
- mdu_disk_info_t *dinfo, char *devname)
+static unsigned long choose_bm_space(unsigned long devsize)
{
- struct mdp_superblock_1 *sb = sbv;
- void *refsbv = NULL;
- int fd = open(devname, O_RDWR | O_EXCL);
+ /* if the device is bigger than 8Gig, save 64k for bitmap usage,
+ * if bigger than 200Gig, save 128k
+ */
+ if (devsize < 64*2) return 0;
+ if (devsize - 64*2 >= 200*1024*1024*2)
+ return 128*2;
+ if (devsize - 4*2 > 8*1024*1024*2)
+ return 64*2;
+ return 4*2;
+}
+
+#ifndef MDASSEMBLE
+static int write_init_super1(struct supertype *st)
+{
+ struct mdp_superblock_1 *sb = st->sb;
+ struct supertype refst;
int rfd;
- int rv;
+ int rv = 0;
int bm_space;
-
- unsigned long 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;
-
- if (load_super1(st, fd, &refsbv, NULL)==0) {
- struct mdp_superblock_1 *refsb = refsbv;
-
- 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 of a bitmap */
- if (array_size >= 200*1024*1024*2)
- bm_space = 128*2;
- else if (array_size > 8*1024*1024*2)
- bm_space = 64*2;
- else
- bm_space = 0;
- 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);
- sb->data_size = __cpu_to_le64(sb_offset - bm_space);
- break;
- case 1:
- sb->super_offset = __cpu_to_le64(0);
- 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;
- if (dsize - 4*2 - 64*2 >= array_size && array_size > 8*1024*1024*2)
- space = 64*2;
- else
- space = 4*2;
- sb->super_offset = __cpu_to_le64(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;
- }
+ /*
+ * 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->sb_csum = calc_sb_1_csum(sb);
- rv = store_super1(st, fd, sb);
- 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, sbv);
- 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(void **firstp, void *secondv)
+static int compare_super1(struct supertype *st, struct supertype *tst)
{
/*
* return:
* 2 wrong uuid
* 3 wrong other info
*/
- struct mdp_superblock_1 *first = *firstp;
- struct mdp_superblock_1 *second = secondv;
+ struct mdp_superblock_1 *first = st->sb;
+ struct mdp_superblock_1 *second = tst->sb;
if (second->magic != __cpu_to_le32(MD_SB_MAGIC))
return 1;
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));
- *firstp = first;
+ st->sb = first;
return 0;
}
if (memcmp(first->set_uuid, second->set_uuid, 16)!= 0)
return 0;
}
-static int load_super1(struct supertype *st, int fd, void **sbp, char *devname)
+static void free_super1(struct supertype *st);
+
+static int load_super1(struct supertype *st, int fd, char *devname)
{
unsigned long long dsize;
unsigned long long sb_offset;
struct bitmap_super_s *bsb;
struct misc_dev_info *misc;
+ free_super1(st);
- if (st->ss == NULL) {
+ 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 */
- st->ss = &super1;
- for (st->minor_version = 0; st->minor_version <= 2 ; st->minor_version++) {
- switch(load_super1(st, fd, sbp, devname)) {
- case 0: super = *sbp;
+ memset(&tst, 0, sizeof(tst));
+ tst.ss = &super1;
+ for (tst.minor_version = 0; tst.minor_version <= 2 ; tst.minor_version++) {
+ switch(load_super1(&tst, fd, devname)) {
+ case 0: super = tst.sb;
if (bestvers == -1 ||
bestctime < __le64_to_cpu(super->ctime)) {
- bestvers = st->minor_version;
+ bestvers = tst.minor_version;
bestctime = __le64_to_cpu(super->ctime);
}
free(super);
- *sbp = NULL;
+ tst.sb = NULL;
break;
- case 1: st->ss = NULL; return 1; /*bad device */
+ case 1: return 1; /*bad device */
case 2: break; /* bad, try next */
}
}
if (bestvers != -1) {
int rv;
- st->minor_version = bestvers;
- st->ss = &super1;
- st->max_devs = 384;
- rv = load_super1(st, fd, sbp, devname);
- if (rv) st->ss = NULL;
+ tst.minor_version = bestvers;
+ tst.ss = &super1;
+ tst.max_devs = 384;
+ rv = load_super1(&tst, fd, devname);
+ if (rv == 0)
+ *st = tst;
return rv;
}
- st->ss = NULL;
return 2;
}
if (!get_dev_size(fd, devname, &dsize))
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 (aread(fd, super, 1024) != 1024) {
if (devname)
fprintf(stderr, Name ": Cannot read superblock on %s\n",
devname);
free(super);
return 2;
}
- *sbp = super;
+ st->sb = super;
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 */
* valid. If it doesn't clear the bit. An --assemble --force
* should get that written out.
*/
- locate_bitmap1(st, fd, super);
- if (read(fd, ((char*)super)+1024, sizeof(struct bitmap_super_s))
- != sizeof(struct bitmap_super_s))
+ locate_bitmap1(st, fd);
+ if (aread(fd, ((char*)super)+1024, 512)
+ != 512)
goto no_bitmap;
- uuid_from_super1(uuid, super);
+ uuid_from_super1(st, uuid);
if (__le32_to_cpu(bsb->magic) != BITMAP_MAGIC ||
memcmp(bsb->uuid, uuid, 16) != 0)
goto no_bitmap;
struct supertype *st = malloc(sizeof(*st));
if (!st) return st;
+ memset(st, 0, sizeof(*st));
st->ss = &super1;
st->max_devs = 384;
- if (strcmp(arg, "1") == 0 ||
- strcmp(arg, "1.0") == 0 ||
- strcmp(arg, "default/large") == 0) {
+ st->sb = NULL;
+ /* 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") == 0) {
+ st->minor_version = -1;
+ return st;
+ }
free(st);
return NULL;
*/
static __u64 avail_size1(struct supertype *st, __u64 devsize)
{
+ struct mdp_superblock_1 *super = st->sb;
if (devsize < 24)
return 0;
- /* if the device is bigger than 8Gig, save 64k for bitmap usage,
- * if bigger than 200Gig, save 128k
- */
- if (devsize-64*2 >= 200*1024*1024*2)
- devsize -= 128*2;
- else if (devsize >= 8*1024*1024*2)
- devsize -= 64*2;
+ if (super == NULL)
+ /* creating: allow suitable space for bitmap */
+ devsize -= choose_bm_space(devsize);
+#ifndef MDASSEMBLE
+ else if (__le32_to_cpu(super->feature_map)&MD_FEATURE_BITMAP_OFFSET) {
+ /* hot-add. allow for actual size of bitmap */
+ struct bitmap_super_s *bsb;
+ bsb = (struct bitmap_super_s *)(((char*)super)+1024);
+ devsize -= bitmap_sectors(bsb);
+ }
+#endif
switch(st->minor_version) {
+ case -1: /* no specified. Now time to set default */
+ st->minor_version = 0;
+ /* FALL THROUGH */
case 0:
/* at end */
return ((devsize - 8*2 ) & ~(4*2-1));
}
static int
-add_internal_bitmap1(struct supertype *st, void *sbv,
+add_internal_bitmap1(struct supertype *st,
int *chunkp, int delay, int write_behind,
unsigned long long size,
int may_change, int major)
long offset;
int chunk = *chunkp;
int room = 0;
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb) + 1024);
switch(st->minor_version) {
* been left.
*/
offset = 0;
- if (__le64_to_cpu(sb->size) >= 200*1024*1024*2)
- room = 128*2;
- else if (__le64_to_cpu(sb->size) > 8*1024*1024*2)
- room = 64*2;
- else {
+ room = choose_bm_space(__le64_to_cpu(sb->size));
+ if (room == 4*2) {
+ /* make it 3K after the superblock */
room = 3*2;
offset = 2;
}
case 2: /* between superblock and data */
if (may_change) {
offset = 4*2;
- if (__le64_to_cpu(sb->size) >= 200*1024*1024*2)
- room = 128*2;
- else if (__le64_to_cpu(sb->size) > 8*1024*1024*2)
- room = 64*2;
- else
- room = 3*2;
+ room = choose_bm_space(__le64_to_cpu(sb->size));
} else {
room = __le64_to_cpu(sb->data_offset)
- __le64_to_cpu(sb->super_offset);
memset(bms, 0, sizeof(*bms));
bms->magic = __cpu_to_le32(BITMAP_MAGIC);
bms->version = __cpu_to_le32(major);
- uuid_from_super1((int*)bms->uuid, sb);
+ uuid_from_super1(st, (int*)bms->uuid);
bms->chunksize = __cpu_to_le32(chunk);
bms->daemon_sleep = __cpu_to_le32(delay);
bms->sync_size = __cpu_to_le64(size);
}
-static void locate_bitmap1(struct supertype *st, int fd, void *sbv)
+static void locate_bitmap1(struct supertype *st, int fd)
{
unsigned long long offset;
struct mdp_superblock_1 *sb;
int mustfree = 0;
- if (!sbv) {
- if (st->ss->load_super(st, fd, &sbv, NULL))
+ if (!st->sb) {
+ if (st->ss->load_super(st, fd, NULL))
return; /* no error I hope... */
mustfree = 1;
}
- sb = sbv;
+ sb = st->sb;
offset = __le64_to_cpu(sb->super_offset);
- offset += (long) __le32_to_cpu(sb->bitmap_offset);
+ offset += (int32_t) __le32_to_cpu(sb->bitmap_offset);
if (mustfree)
free(sb);
lseek64(fd, offset<<9, 0);
}
-static int write_bitmap1(struct supertype *st, int fd, void *sbv)
+static int write_bitmap1(struct supertype *st, int fd)
{
- struct mdp_superblock_1 *sb = sbv;
+ struct mdp_superblock_1 *sb = st->sb;
bitmap_super_t *bms = (bitmap_super_t*)(((char*)sb)+1024);
int rv = 0;
int towrite, n;
- char buf[4096];
+ char *buf = (char*)(((long)(abuf+4096))&~4095UL);
+
+ locate_bitmap1(st, fd);
- locate_bitmap1(st, fd, sbv);
+ memset(buf, 0xff, 4096);
+ memcpy(buf, ((char*)sb)+1024, sizeof(bitmap_super_t));
- if (write(fd, ((char*)sb)+1024, sizeof(bitmap_super_t)) !=
- sizeof(bitmap_super_t))
- return -2;
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)
return rv;
}
+static void free_super1(struct supertype *st)
+{
+ if (st->sb)
+ free(st->sb);
+ 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,
.brief_examine_super = brief_examine_super1,
+ .export_examine_super = export_examine_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,
.add_internal_bitmap = add_internal_bitmap1,
.locate_bitmap = locate_bitmap1,
.write_bitmap = write_bitmap1,
- .major = 1,
+ .free_super = free_super1,
#if __BYTE_ORDER == BIG_ENDIAN
.swapuuid = 0,
#else
.swapuuid = 1,
#endif
+ .name = "1.0",
};
projects / thirdparty / mdadm.git / blobdiff