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btrfs-progs: rename block_count to byte_count

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block_count and dev_block_count are counting the size in bytes. And,
comparing them with e.g, "min_dev_size" is confusing. Rename them to
represent the unit better.

Signed-off-by: Naohiro Aota <naohiro.aota@wdc.com>
Reviewed-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: Qu Wenruo <wqu@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Naohiro Aota 2024-05-29 16:13:16 +09:00 committed by David Sterba
parent 7b48204560
commit d76d74c344
2 changed files with 42 additions and 44 deletions
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28
common/device-utils.c
View File

@ -222,11 +222,11 @@ out:
* - reset zones
* - delete end of the device
*/
int btrfs_prepare_device(int fd, const char *file, u64 *block_count_ret,
u64 max_block_count, unsigned opflags)
int btrfs_prepare_device(int fd, const char *file, u64 *byte_count_ret,
u64 max_byte_count, unsigned opflags)
{
struct btrfs_zoned_device_info *zinfo = NULL;
u64 block_count;
u64 byte_count;
struct stat st;
int i, ret;
@ -236,13 +236,13 @@ int btrfs_prepare_device(int fd, const char *file, u64 *block_count_ret,
return 1;
}
block_count = device_get_partition_size_fd_stat(fd, &st);
if (block_count == 0) {
byte_count = device_get_partition_size_fd_stat(fd, &st);
if (byte_count == 0) {
error("unable to determine size of %s", file);
return 1;
}
if (max_block_count)
block_count = min(block_count, max_block_count);
if (max_byte_count)
byte_count = min(byte_count, max_byte_count);
if (opflags & PREP_DEVICE_ZONED) {
ret = btrfs_get_zone_info(fd, file, &zinfo);
@ -276,18 +276,18 @@ int btrfs_prepare_device(int fd, const char *file, u64 *block_count_ret,
if (discard_supported(file)) {
if (opflags & PREP_DEVICE_VERBOSE)
printf("Performing full device TRIM %s (%s) ...\n",
file, pretty_size(block_count));
device_discard_blocks(fd, 0, block_count);
file, pretty_size(byte_count));
device_discard_blocks(fd, 0, byte_count);
}
}
ret = zero_dev_clamped(fd, zinfo, 0, ZERO_DEV_BYTES, block_count);
ret = zero_dev_clamped(fd, zinfo, 0, ZERO_DEV_BYTES, byte_count);
for (i = 0 ; !ret && i < BTRFS_SUPER_MIRROR_MAX; i++)
ret = zero_dev_clamped(fd, zinfo, btrfs_sb_offset(i),
BTRFS_SUPER_INFO_SIZE, block_count);
BTRFS_SUPER_INFO_SIZE, byte_count);
if (!ret && (opflags & PREP_DEVICE_ZERO_END))
ret = zero_dev_clamped(fd, zinfo, block_count - ZERO_DEV_BYTES,
ZERO_DEV_BYTES, block_count);
ret = zero_dev_clamped(fd, zinfo, byte_count - ZERO_DEV_BYTES,
ZERO_DEV_BYTES, byte_count);
if (ret < 0) {
errno = -ret;
@ -302,7 +302,7 @@ int btrfs_prepare_device(int fd, const char *file, u64 *block_count_ret,
}
free(zinfo);
*block_count_ret = block_count;
*byte_count_ret = byte_count;
return 0;
err:

58
mkfs/main.c
View File

@ -80,8 +80,8 @@ static int opt_oflags = O_RDWR;
struct prepare_device_progress {
int fd;
char *file;
u64 dev_block_count;
u64 block_count;
u64 dev_byte_count;
u64 byte_count;
int ret;
};
@ -1159,8 +1159,8 @@ static void *prepare_one_device(void *ctx)
}
prepare_ctx->ret = btrfs_prepare_device(prepare_ctx->fd,
prepare_ctx->file,
&prepare_ctx->dev_block_count,
prepare_ctx->block_count,
&prepare_ctx->dev_byte_count,
prepare_ctx->byte_count,
(bconf.verbose ? PREP_DEVICE_VERBOSE : 0) |
(opt_zero_end ? PREP_DEVICE_ZERO_END : 0) |
(opt_discard ? PREP_DEVICE_DISCARD : 0) |
@ -1204,8 +1204,8 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
bool metadata_profile_set = false;
u64 data_profile = 0;
bool data_profile_set = false;
u64 block_count = 0;
u64 dev_block_count = 0;
u64 byte_count = 0;
u64 dev_byte_count = 0;
bool mixed = false;
char *label = NULL;
int nr_global_roots = sysconf(_SC_NPROCESSORS_ONLN);
@ -1347,7 +1347,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
sectorsize = arg_strtou64_with_suffix(optarg);
break;
case 'b':
block_count = arg_strtou64_with_suffix(optarg);
byte_count = arg_strtou64_with_suffix(optarg);
opt_zero_end = false;
break;
case 'v':
@ -1623,34 +1623,33 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
* Block_count not specified, use file/device size first.
* Or we will always use source_dir_size calculated for mkfs.
*/
if (!block_count)
block_count = device_get_partition_size_fd_stat(fd, &statbuf);
if (!byte_count)
byte_count = device_get_partition_size_fd_stat(fd, &statbuf);
source_dir_size = btrfs_mkfs_size_dir(source_dir, sectorsize,
min_dev_size, metadata_profile, data_profile);
if (block_count < source_dir_size) {
if (byte_count < source_dir_size) {
if (S_ISREG(statbuf.st_mode)) {
block_count = source_dir_size;
byte_count = source_dir_size;
} else {
warning(
"the target device %llu (%s) is smaller than the calculated source directory size %llu (%s), mkfs may fail",
block_count, pretty_size(block_count),
byte_count, pretty_size(byte_count),
source_dir_size, pretty_size(source_dir_size));
}
}
ret = zero_output_file(fd, block_count);
ret = zero_output_file(fd, byte_count);
if (ret) {
error("unable to zero the output file");
close(fd);
goto error;
}
/* our "device" is the new image file */
dev_block_count = block_count;
dev_byte_count = byte_count;
close(fd);
}
/* Check device/block_count after the nodesize is determined */
if (block_count && block_count < min_dev_size) {
error("size %llu is too small to make a usable filesystem",
block_count);
/* Check device/byte_count after the nodesize is determined */
if (byte_count && byte_count < min_dev_size) {
error("size %llu is too small to make a usable filesystem", byte_count);
error("minimum size for btrfs filesystem is %llu",
min_dev_size);
goto error;
@ -1661,9 +1660,8 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
* 1 zone for a metadata block group
* 1 zone for a data block group
*/
if (opt_zoned && block_count && block_count < 5 * zone_size(file)) {
error("size %llu is too small to make a usable filesystem",
block_count);
if (opt_zoned && byte_count && byte_count < 5 * zone_size(file)) {
error("size %llu is too small to make a usable filesystem", byte_count);
error("minimum size for a zoned btrfs filesystem is %llu",
min_dev_size);
goto error;
@ -1741,8 +1739,8 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
/* Start threads */
for (i = 0; i < device_count; i++) {
prepare_ctx[i].file = argv[optind + i - 1];
prepare_ctx[i].block_count = block_count;
prepare_ctx[i].dev_block_count = block_count;
prepare_ctx[i].byte_count = byte_count;
prepare_ctx[i].dev_byte_count = byte_count;
ret = pthread_create(&t_prepare[i], NULL, prepare_one_device,
&prepare_ctx[i]);
if (ret) {
@ -1763,16 +1761,16 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
goto error;
}
dev_block_count = prepare_ctx[0].dev_block_count;
if (block_count && block_count > dev_block_count) {
dev_byte_count = prepare_ctx[0].dev_byte_count;
if (byte_count && byte_count > dev_byte_count) {
error("%s is smaller than requested size, expected %llu, found %llu",
file, block_count, dev_block_count);
file, byte_count, dev_byte_count);
goto error;
}
/* To create the first block group and chunk 0 in make_btrfs */
system_group_size = (opt_zoned ? zone_size(file) : BTRFS_MKFS_SYSTEM_GROUP_SIZE);
if (dev_block_count < system_group_size) {
if (dev_byte_count < system_group_size) {
error("device is too small to make filesystem, must be at least %llu",
system_group_size);
goto error;
@ -1794,7 +1792,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
mkfs_cfg.label = label;
memcpy(mkfs_cfg.fs_uuid, fs_uuid, sizeof(mkfs_cfg.fs_uuid));
memcpy(mkfs_cfg.dev_uuid, dev_uuid, sizeof(mkfs_cfg.dev_uuid));
mkfs_cfg.num_bytes = dev_block_count;
mkfs_cfg.num_bytes = dev_byte_count;
mkfs_cfg.nodesize = nodesize;
mkfs_cfg.sectorsize = sectorsize;
mkfs_cfg.stripesize = stripesize;
@ -1889,7 +1887,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
file);
continue;
}
dev_block_count = prepare_ctx[i].dev_block_count;
dev_byte_count = prepare_ctx[i].dev_byte_count;
if (prepare_ctx[i].ret) {
errno = -prepare_ctx[i].ret;
@ -1898,7 +1896,7 @@ int BOX_MAIN(mkfs)(int argc, char **argv)
}
ret = btrfs_add_to_fsid(trans, root, prepare_ctx[i].fd,
prepare_ctx[i].file, dev_block_count,
prepare_ctx[i].file, dev_byte_count,
sectorsize, sectorsize, sectorsize);
if (ret) {
error("unable to add %s to filesystem: %d",