#include "mdadm.h"
-#define min(a,b) (((a) < (b)) ? (a) : (b))
-
-inline void sb_le_to_cpu(bitmap_super_t *sb)
+static inline void sb_le_to_cpu(bitmap_super_t *sb)
{
sb->magic = __le32_to_cpu(sb->magic);
sb->version = __le32_to_cpu(sb->version);
sb->daemon_sleep = __le32_to_cpu(sb->daemon_sleep);
sb->sync_size = __le64_to_cpu(sb->sync_size);
sb->write_behind = __le32_to_cpu(sb->write_behind);
+ sb->nodes = __le32_to_cpu(sb->nodes);
+ sb->sectors_reserved = __le32_to_cpu(sb->sectors_reserved);
}
-inline void sb_cpu_to_le(bitmap_super_t *sb)
+static inline void sb_cpu_to_le(bitmap_super_t *sb)
{
sb_le_to_cpu(sb); /* these are really the same thing */
}
{ NULL, -1 }
};
-const char *bitmap_state(int state_num)
+static const char *bitmap_state(int state_num)
{
char *state = map_num(bitmap_states, state_num);
return state ? state : "Unknown";
}
-const char *human_chunksize(unsigned long bytes)
+static const char *human_chunksize(unsigned long bytes)
{
static char buf[16];
char *suffixes[] = { "B", "KB", "MB", "GB", "TB", NULL };
} bitmap_info_t;
/* count the dirty bits in the first num_bits of byte */
-inline int count_dirty_bits_byte(char byte, int num_bits)
+static inline int count_dirty_bits_byte(char byte, int num_bits)
{
int num = 0;
return num;
}
-int count_dirty_bits(char *buf, int num_bits)
+static int count_dirty_bits(char *buf, int num_bits)
{
int i, num = 0;
- for (i=0; i < num_bits / 8; i++)
+ for (i = 0; i < num_bits / 8; i++)
num += count_dirty_bits_byte(buf[i], 8);
if (num_bits % 8) /* not an even byte boundary */
return num;
}
-/* calculate the size of the bitmap given the array size and bitmap chunksize */
-unsigned long long bitmap_bits(unsigned long long array_size,
- unsigned long chunksize)
-{
- return (array_size * 512 + chunksize - 1) / chunksize;
-}
-
-unsigned long bitmap_sectors(struct bitmap_super_s *bsb)
-{
- unsigned long long bits = bitmap_bits(__le64_to_cpu(bsb->sync_size),
- __le32_to_cpu(bsb->chunksize));
- int bits_per_sector = 8*512;
- return (bits + bits_per_sector - 1) / bits_per_sector;
-}
-
-
-bitmap_info_t *bitmap_fd_read(int fd, int brief)
+static bitmap_info_t *bitmap_fd_read(int fd, int brief)
{
/* Note: fd might be open O_DIRECT, so we must be
* careful to align reads properly
*/
unsigned long long total_bits = 0, read_bits = 0, dirty_bits = 0;
bitmap_info_t *info;
- char *buf, *unaligned;
- int n, skip;
+ void *buf;
+ unsigned int n, skip;
- unaligned = malloc(8192*2);
- buf = (char*) ((unsigned long)unaligned | 8191)+1;
- n = read(fd, buf, 8192);
-
- info = malloc(sizeof(*info));
- if (info == NULL) {
-#if __GNUC__ < 3
- fprintf(stderr, Name ": failed to allocate %d bytes\n",
- (int)sizeof(*info));
-#else
- fprintf(stderr, Name ": failed to allocate %zd bytes\n",
- sizeof(*info));
-#endif
+ if (posix_memalign(&buf, 4096, 8192) != 0) {
+ pr_err("failed to allocate 8192 bytes\n");
return NULL;
}
+ n = read(fd, buf, 8192);
+
+ info = xmalloc(sizeof(*info));
if (n < sizeof(info->sb)) {
- fprintf(stderr, Name ": failed to read superblock of bitmap "
- "file: %s\n", strerror(errno));
+ pr_err("failed to read superblock of bitmap file: %s\n", strerror(errno));
free(info);
- free(unaligned);
+ free(buf);
return NULL;
}
memcpy(&info->sb, buf, sizeof(info->sb));
}
if (read_bits < total_bits) { /* file truncated... */
- fprintf(stderr, Name ": WARNING: bitmap file is not large "
- "enough for array size %llu!\n\n",
+ pr_err("WARNING: bitmap file is not large enough for array size %llu!\n\n",
(unsigned long long)info->sb.sync_size);
total_bits = read_bits;
}
out:
+ free(buf);
info->total_bits = total_bits;
info->dirty_bits = dirty_bits;
return info;
}
-bitmap_info_t *bitmap_file_read(char *filename, int brief, struct supertype **stp)
+static int
+bitmap_file_open(char *filename, struct supertype **stp, int node_num)
{
int fd;
- bitmap_info_t *info;
struct stat stb;
struct supertype *st = *stp;
- if (stat(filename, &stb) < 0) {
- fprintf(stderr, Name ": failed to find file %s: %s\n",
- filename, strerror(errno));
- return NULL;
+ fd = open(filename, O_RDONLY|O_DIRECT);
+ if (fd < 0) {
+ pr_err("failed to open bitmap file %s: %s\n",
+ filename, strerror(errno));
+ return -1;
}
- if ((S_IFMT & stb.st_mode) == S_IFBLK) {
- fd = open(filename, O_RDONLY);
- if (fd < 0) {
- fprintf(stderr, Name ": failed to open bitmap file %s: %s\n",
- filename, strerror(errno));
- return NULL;
- }
+
+ if (fstat(fd, &stb) < 0) {
+ pr_err("fstat failed for %s: %s\n", filename, strerror(errno));
+ close(fd);
+ return -1;
+ }
+ if ((stb.st_mode & S_IFMT) == S_IFBLK) {
/* block device, so we are probably after an internal bitmap */
- if (!st) st = guess_super(fd);
+ if (!st)
+ st = guess_super(fd);
if (!st) {
/* just look at device... */
lseek(fd, 0, 0);
+ } else if (!st->ss->locate_bitmap) {
+ pr_err("No bitmap possible with %s metadata\n",
+ st->ss->name);
+ close(fd);
+ return -1;
} else {
- st->ss->locate_bitmap(st, fd);
+ if (st->ss->locate_bitmap(st, fd, node_num)) {
+ pr_err("%s doesn't have bitmap\n", filename);
+ close(fd);
+ fd = -1;
+ }
}
- ioctl(fd, BLKFLSBUF, 0); /* make sure we read current data */
*stp = st;
- } else {
- fd = open(filename, O_RDONLY|O_DIRECT);
- if (fd < 0) {
- fprintf(stderr, Name ": failed to open bitmap file %s: %s\n",
- filename, strerror(errno));
- return NULL;
- }
}
- info = bitmap_fd_read(fd, brief);
- close(fd);
- return info;
+ return fd;
}
-__u32 swapl(__u32 l)
+static __u32 swapl(__u32 l)
{
char *c = (char*)&l;
char t= c[0];
int rv = 1;
char buf[64];
int swap;
+ int fd, i;
+ __u32 uuid32[4];
- info = bitmap_file_read(filename, brief, &st);
- if (!info)
+ fd = bitmap_file_open(filename, &st, 0);
+ if (fd < 0)
return rv;
+ info = bitmap_fd_read(fd, brief);
+ if (!info)
+ return rv;
sb = &info->sb;
+ if (sb->magic != BITMAP_MAGIC) {
+ pr_err("This is an md array. To view a bitmap you need to examine\n");
+ pr_err("a member device, not the array.\n");
+ pr_err("Reporting bitmap that would be used if this array were used\n");
+ pr_err("as a member of some other array\n");
+ }
+ close(fd);
printf(" Filename : %s\n", filename);
printf(" Magic : %08x\n", sb->magic);
if (sb->magic != BITMAP_MAGIC) {
- fprintf(stderr, Name ": invalid bitmap magic 0x%x, the bitmap file appears to be corrupted\n", sb->magic);
+ pr_err("invalid bitmap magic 0x%x, the bitmap file appears\n",
+ sb->magic);
+ pr_err("to be corrupted or missing.\n");
}
printf(" Version : %d\n", sb->version);
if (sb->version < BITMAP_MAJOR_LO ||
- sb->version > BITMAP_MAJOR_HI) {
- fprintf(stderr, Name ": unknown bitmap version %d, either the bitmap file is corrupted or you need to upgrade your tools\n", sb->version);
+ sb->version > BITMAP_MAJOR_CLUSTERED) {
+ pr_err("unknown bitmap version %d, either the bitmap file\n",
+ sb->version);
+ pr_err("is corrupted or you need to upgrade your tools\n");
goto free_info;
}
#else
swap = 1;
#endif
- if (swap) {
- printf(" UUID : %08x:%08x:%08x:%08x\n",
- swapl(*(__u32 *)(sb->uuid+0)),
- swapl(*(__u32 *)(sb->uuid+4)),
- swapl(*(__u32 *)(sb->uuid+8)),
- swapl(*(__u32 *)(sb->uuid+12)));
- } else {
- printf(" UUID : %08x:%08x:%08x:%08x\n",
- *(__u32 *)(sb->uuid+0),
- *(__u32 *)(sb->uuid+4),
- *(__u32 *)(sb->uuid+8),
- *(__u32 *)(sb->uuid+12));
+ memcpy(uuid32, sb->uuid, 16);
+ if (swap)
+ printf(" UUID : %08x:%08x:%08x:%08x\n",
+ swapl(uuid32[0]),
+ swapl(uuid32[1]),
+ swapl(uuid32[2]),
+ swapl(uuid32[3]));
+ else
+ printf(" UUID : %08x:%08x:%08x:%08x\n",
+ uuid32[0],
+ uuid32[1],
+ uuid32[2],
+ uuid32[3]);
+
+ if (sb->nodes == 0) {
+ printf(" Events : %llu\n", (unsigned long long)sb->events);
+ printf(" Events Cleared : %llu\n", (unsigned long long)sb->events_cleared);
+ printf(" State : %s\n", bitmap_state(sb->state));
+
}
- printf(" Events : %llu\n", (unsigned long long)sb->events);
- printf(" Events Cleared : %llu\n", (unsigned long long)sb->events_cleared);
- printf(" State : %s\n", bitmap_state(sb->state));
+
printf(" Chunksize : %s\n", human_chunksize(sb->chunksize));
printf(" Daemon : %ds flush period\n", sb->daemon_sleep);
if (sb->write_behind)
printf(" Write Mode : %s\n", buf);
printf(" Sync Size : %llu%s\n", (unsigned long long)sb->sync_size/2,
human_size(sb->sync_size * 512));
- if (brief)
- goto free_info;
- printf(" Bitmap : %llu bits (chunks), %llu dirty (%2.1f%%)\n",
- info->total_bits, info->dirty_bits,
- 100.0 * info->dirty_bits / (info->total_bits + 1));
+
+ if (sb->nodes == 0) {
+ if (brief)
+ goto free_info;
+ printf(" Bitmap : %llu bits (chunks), %llu dirty (%2.1f%%)\n",
+ info->total_bits, info->dirty_bits,
+ 100.0 * info->dirty_bits / (info->total_bits?:1));
+ } else {
+ printf(" Cluster nodes : %d\n", sb->nodes);
+ printf(" Cluster name : %-64s\n", sb->cluster_name);
+ for (i = 0; i < (int)sb->nodes; i++) {
+ st = NULL;
+ free(info);
+ fd = bitmap_file_open(filename, &st, i);
+ if (fd < 0) {
+ printf(" Unable to open bitmap file on node: %i\n", i);
+
+ continue;
+ }
+ info = bitmap_fd_read(fd, brief);
+ if (!info) {
+ close(fd);
+ printf(" Unable to read bitmap on node: %i\n", i);
+ continue;
+ }
+ sb = &info->sb;
+ if (sb->magic != BITMAP_MAGIC)
+ pr_err("invalid bitmap magic 0x%x, the bitmap file appears to be corrupted\n", sb->magic);
+
+ printf(" Node Slot : %d\n", i);
+ printf(" Events : %llu\n",
+ (unsigned long long)sb->events);
+ printf(" Events Cleared : %llu\n",
+ (unsigned long long)sb->events_cleared);
+ printf(" State : %s\n", bitmap_state(sb->state));
+ if (brief)
+ continue;
+ printf(" Bitmap : %llu bits (chunks), %llu dirty (%2.1f%%)\n",
+ info->total_bits, info->dirty_bits,
+ 100.0 * info->dirty_bits / (info->total_bits?:1));
+ close(fd);
+ }
+ }
+
free_info:
free(info);
return rv;
long long bytes, filesize;
if (!force && access(filename, F_OK) == 0) {
- fprintf(stderr, Name ": bitmap file %s already exists, use --force to overwrite\n", filename);
+ pr_err("bitmap file %s already exists, use --force to overwrite\n", filename);
return rv;
}
fp = fopen(filename, "w");
if (fp == NULL) {
- fprintf(stderr, Name ": failed to open bitmap file %s: %s\n",
+ pr_err("failed to open bitmap file %s: %s\n",
filename, strerror(errno));
return rv;
}
*/
chunksize = DEFAULT_BITMAP_CHUNK;
/* <<20 for 2^20 chunks, >>9 to convert bytes to sectors */
- while (array_size > (chunksize << (20-9)))
+ while (array_size > ((unsigned long long)chunksize << (20-9)))
chunksize <<= 1;
}
sb_cpu_to_le(&sb); /* convert to on-disk byte ordering */
if (fwrite(&sb, sizeof(sb), 1, fp) != 1) {
- fprintf(stderr, Name ": failed to write superblock to bitmap file %s: %s\n", filename, strerror(errno));
+ pr_err("failed to write superblock to bitmap file %s: %s\n", filename, strerror(errno));
goto out;
}
while (bytes > 0) {
if (fwrite(block, sizeof(block), 1, fp) != 1) {
- fprintf(stderr, Name ": failed to write bitmap file %s: %s\n", filename, strerror(errno));
+ pr_err("failed to write bitmap file %s: %s\n", filename, strerror(errno));
goto out;
}
bytes -= sizeof(block);
projects / thirdparty / mdadm.git / blobdiff