#define _XOPEN_SOURCE 500
#define _GNU_SOURCE
-#ifndef __CHECKER__
+#include "kerncompat.h"
+
#include <sys/ioctl.h>
#include <sys/mount.h>
#include "ioctl.h"
-#endif
-
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
+#include <sys/dir.h>
#include <fcntl.h>
#include <unistd.h>
#include <getopt.h>
#include <uuid/uuid.h>
-#include <linux/fs.h>
#include <ctype.h>
-#include "kerncompat.h"
+#include <attr/xattr.h>
+#include <blkid/blkid.h>
+#include <ftw.h>
#include "ctree.h"
#include "disk-io.h"
#include "volumes.h"
#include "utils.h"
#include "version.h"
-static u64 parse_size(char *s)
-{
- int len = strlen(s);
- char c;
- u64 mult = 1;
-
- if (!isdigit(s[len - 1])) {
- c = tolower(s[len - 1]);
- switch (c) {
- case 'g':
- mult *= 1024;
- case 'm':
- mult *= 1024;
- case 'k':
- mult *= 1024;
- case 'b':
- break;
- default:
- fprintf(stderr, "Unknown size descriptor %c\n", c);
- exit(1);
- }
- s[len - 1] = '\0';
- }
- return atol(s) * mult;
-}
+static u64 index_cnt = 2;
+
+#define DEFAULT_MKFS_FEATURES (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
-static int make_root_dir(struct btrfs_root *root)
+#define DEFAULT_MKFS_LEAF_SIZE 16384
+
+struct directory_name_entry {
+ char *dir_name;
+ char *path;
+ ino_t inum;
+ struct list_head list;
+};
+
+static int make_root_dir(struct btrfs_root *root, int mixed)
{
struct btrfs_trans_handle *trans;
struct btrfs_key location;
int ret;
trans = btrfs_start_transaction(root, 1);
- bytes_used = btrfs_super_bytes_used(&root->fs_info->super_copy);
+ bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy);
root->fs_info->system_allocs = 1;
ret = btrfs_make_block_group(trans, root, bytes_used,
0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
BUG_ON(ret);
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
- &chunk_start, &chunk_size,
- BTRFS_BLOCK_GROUP_METADATA);
- BUG_ON(ret);
- ret = btrfs_make_block_group(trans, root, 0,
- BTRFS_BLOCK_GROUP_METADATA,
- BTRFS_FIRST_CHUNK_TREE_OBJECTID,
- chunk_start, chunk_size);
- BUG_ON(ret);
+ if (mixed) {
+ ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ &chunk_start, &chunk_size,
+ BTRFS_BLOCK_GROUP_METADATA |
+ BTRFS_BLOCK_GROUP_DATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr,
+ "no space to alloc data/metadata chunk\n");
+ goto err;
+ }
+ BUG_ON(ret);
+ ret = btrfs_make_block_group(trans, root, 0,
+ BTRFS_BLOCK_GROUP_METADATA |
+ BTRFS_BLOCK_GROUP_DATA,
+ BTRFS_FIRST_CHUNK_TREE_OBJECTID,
+ chunk_start, chunk_size);
+ BUG_ON(ret);
+ printf("Created a data/metadata chunk of size %llu\n", chunk_size);
+ } else {
+ ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ &chunk_start, &chunk_size,
+ BTRFS_BLOCK_GROUP_METADATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "no space to alloc metadata chunk\n");
+ goto err;
+ }
+ BUG_ON(ret);
+ ret = btrfs_make_block_group(trans, root, 0,
+ BTRFS_BLOCK_GROUP_METADATA,
+ BTRFS_FIRST_CHUNK_TREE_OBJECTID,
+ chunk_start, chunk_size);
+ BUG_ON(ret);
+ }
root->fs_info->system_allocs = 0;
btrfs_commit_transaction(trans, root);
trans = btrfs_start_transaction(root, 1);
BUG_ON(!trans);
- ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
- &chunk_start, &chunk_size,
- BTRFS_BLOCK_GROUP_DATA);
- BUG_ON(ret);
- ret = btrfs_make_block_group(trans, root, 0,
- BTRFS_BLOCK_GROUP_DATA,
- BTRFS_FIRST_CHUNK_TREE_OBJECTID,
- chunk_start, chunk_size);
- BUG_ON(ret);
+ if (!mixed) {
+ ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ &chunk_start, &chunk_size,
+ BTRFS_BLOCK_GROUP_DATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "no space to alloc data chunk\n");
+ goto err;
+ }
+ BUG_ON(ret);
+ ret = btrfs_make_block_group(trans, root, 0,
+ BTRFS_BLOCK_GROUP_DATA,
+ BTRFS_FIRST_CHUNK_TREE_OBJECTID,
+ chunk_start, chunk_size);
+ BUG_ON(ret);
+ }
ret = btrfs_make_root_dir(trans, root->fs_info->tree_root,
BTRFS_ROOT_TREE_DIR_OBJECTID);
location.offset = (u64)-1;
ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
"default", 7,
- btrfs_super_root_dir(&root->fs_info->super_copy),
+ btrfs_super_root_dir(root->fs_info->super_copy),
&location, BTRFS_FT_DIR, 0);
if (ret)
goto err;
return ret;
}
-static int recow_roots(struct btrfs_trans_handle *trans,
- struct btrfs_root *root)
+static void __recow_root(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root)
{
int ret;
struct extent_buffer *tmp;
- struct btrfs_fs_info *info = root->fs_info;
-
- ret = __btrfs_cow_block(trans, info->fs_root, info->fs_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->tree_root, info->tree_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->extent_root,
- info->extent_root->node, NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->chunk_root, info->chunk_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
+ if (trans->transid != btrfs_root_generation(&root->root_item)) {
+ extent_buffer_get(root->node);
+ ret = __btrfs_cow_block(trans, root, root->node,
+ NULL, 0, &tmp, 0, 0);
+ BUG_ON(ret);
+ free_extent_buffer(tmp);
+ }
+}
- ret = __btrfs_cow_block(trans, info->dev_root, info->dev_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
+static void recow_roots(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root)
+{
+ struct btrfs_fs_info *info = root->fs_info;
- return 0;
+ __recow_root(trans, info->fs_root);
+ __recow_root(trans, info->tree_root);
+ __recow_root(trans, info->extent_root);
+ __recow_root(trans, info->chunk_root);
+ __recow_root(trans, info->dev_root);
+ __recow_root(trans, info->csum_root);
}
static int create_one_raid_group(struct btrfs_trans_handle *trans,
ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
&chunk_start, &chunk_size, type);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "not enough free space\n");
+ exit(1);
+ }
BUG_ON(ret);
ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
static int create_raid_groups(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 data_profile,
- u64 metadata_profile)
+ int data_profile_opt, u64 metadata_profile,
+ int metadata_profile_opt, int mixed, int ssd)
{
- u64 num_devices = btrfs_super_num_devices(&root->fs_info->super_copy);
- u64 allowed;
+ u64 num_devices = btrfs_super_num_devices(root->fs_info->super_copy);
int ret;
- if (num_devices == 1)
- allowed = BTRFS_BLOCK_GROUP_DUP;
- else if (num_devices >= 4) {
- allowed = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
- BTRFS_BLOCK_GROUP_RAID10;
- } else
- allowed = BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1;
+ if (metadata_profile) {
+ u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
- if (allowed & metadata_profile) {
ret = create_one_raid_group(trans, root,
BTRFS_BLOCK_GROUP_SYSTEM |
- (allowed & metadata_profile));
+ metadata_profile);
BUG_ON(ret);
- ret = create_one_raid_group(trans, root,
- BTRFS_BLOCK_GROUP_METADATA |
- (allowed & metadata_profile));
- BUG_ON(ret);
+ if (mixed)
+ meta_flags |= BTRFS_BLOCK_GROUP_DATA;
- ret = recow_roots(trans, root);
+ ret = create_one_raid_group(trans, root, meta_flags |
+ metadata_profile);
BUG_ON(ret);
+
}
- if (num_devices > 1 && (allowed & data_profile)) {
+ if (!mixed && num_devices > 1 && data_profile) {
ret = create_one_raid_group(trans, root,
BTRFS_BLOCK_GROUP_DATA |
- (allowed & data_profile));
+ data_profile);
BUG_ON(ret);
}
+ recow_roots(trans, root);
+
return 0;
}
location.objectid = objectid;
location.type = BTRFS_ROOT_ITEM_KEY;
- location.offset = trans->transid;
+ location.offset = 0;
ret = btrfs_insert_root(trans, root->fs_info->tree_root,
&location, &root_item);
BUG_ON(ret);
return 0;
}
+
+static void print_usage(void) __attribute__((noreturn));
static void print_usage(void)
{
fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
fprintf(stderr, "options:\n");
fprintf(stderr, "\t -A --alloc-start the offset to start the FS\n");
fprintf(stderr, "\t -b --byte-count total number of bytes in the FS\n");
- fprintf(stderr, "\t -d --data data profile, raid0, raid1, raid10 or single\n");
+ fprintf(stderr, "\t -d --data data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
+ fprintf(stderr, "\t -f --force force overwrite of existing filesystem\n");
fprintf(stderr, "\t -l --leafsize size of btree leaves\n");
fprintf(stderr, "\t -L --label set a label\n");
fprintf(stderr, "\t -m --metadata metadata profile, values like data profile\n");
+ fprintf(stderr, "\t -M --mixed mix metadata and data together\n");
fprintf(stderr, "\t -n --nodesize size of btree nodes\n");
- fprintf(stderr, "\t -s --sectorsize min block allocation\n");
+ fprintf(stderr, "\t -s --sectorsize min block allocation (may not mountable by current kernel)\n");
+ fprintf(stderr, "\t -r --rootdir the source directory\n");
+ fprintf(stderr, "\t -K --nodiscard do not perform whole device TRIM\n");
+ fprintf(stderr, "\t -O --features comma separated list of filesystem features\n");
+ fprintf(stderr, "\t -V --version print the mkfs.btrfs version and exit\n");
fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
+static void print_version(void) __attribute__((noreturn));
+static void print_version(void)
+{
+ fprintf(stderr, "mkfs.btrfs, part of %s\n", BTRFS_BUILD_VERSION);
+ exit(0);
+}
+
static u64 parse_profile(char *s)
{
if (strcmp(s, "raid0") == 0) {
return BTRFS_BLOCK_GROUP_RAID0;
} else if (strcmp(s, "raid1") == 0) {
- return BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_DUP;
+ return BTRFS_BLOCK_GROUP_RAID1;
+ } else if (strcmp(s, "raid5") == 0) {
+ return BTRFS_BLOCK_GROUP_RAID5;
+ } else if (strcmp(s, "raid6") == 0) {
+ return BTRFS_BLOCK_GROUP_RAID6;
} else if (strcmp(s, "raid10") == 0) {
- return BTRFS_BLOCK_GROUP_RAID10 | BTRFS_BLOCK_GROUP_DUP;
+ return BTRFS_BLOCK_GROUP_RAID10;
+ } else if (strcmp(s, "dup") == 0) {
+ return BTRFS_BLOCK_GROUP_DUP;
} else if (strcmp(s, "single") == 0) {
return 0;
} else {
- fprintf(stderr, "Unknown option %s\n", s);
+ fprintf(stderr, "Unknown profile %s\n", s);
print_usage();
}
+ /* not reached */
return 0;
}
static char *parse_label(char *input)
{
- int i;
int len = strlen(input);
- if (len > BTRFS_LABEL_SIZE) {
+ if (len >= BTRFS_LABEL_SIZE) {
fprintf(stderr, "Label %s is too long (max %d)\n", input,
- BTRFS_LABEL_SIZE);
+ BTRFS_LABEL_SIZE - 1);
exit(1);
}
- for (i = 0; i < len; i++) {
- if (input[i] == '/' || input[i] == '\\') {
- fprintf(stderr, "invalid label %s\n", input);
- exit(1);
- }
- }
return strdup(input);
}
static struct option long_options[] = {
{ "alloc-start", 1, NULL, 'A'},
{ "byte-count", 1, NULL, 'b' },
+ { "force", 0, NULL, 'f' },
{ "leafsize", 1, NULL, 'l' },
{ "label", 1, NULL, 'L'},
{ "metadata", 1, NULL, 'm' },
+ { "mixed", 0, NULL, 'M' },
{ "nodesize", 1, NULL, 'n' },
{ "sectorsize", 1, NULL, 's' },
{ "data", 1, NULL, 'd' },
- { 0, 0, 0, 0}
+ { "version", 0, NULL, 'V' },
+ { "rootdir", 1, NULL, 'r' },
+ { "nodiscard", 0, NULL, 'K' },
+ { "features", 0, NULL, 'O' },
+ { NULL, 0, NULL, 0}
+};
+
+static int add_directory_items(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 objectid,
+ ino_t parent_inum, const char *name,
+ struct stat *st, int *dir_index_cnt)
+{
+ int ret;
+ int name_len;
+ struct btrfs_key location;
+ u8 filetype = 0;
+
+ name_len = strlen(name);
+
+ location.objectid = objectid;
+ location.offset = 0;
+ btrfs_set_key_type(&location, BTRFS_INODE_ITEM_KEY);
+
+ if (S_ISDIR(st->st_mode))
+ filetype = BTRFS_FT_DIR;
+ if (S_ISREG(st->st_mode))
+ filetype = BTRFS_FT_REG_FILE;
+ if (S_ISLNK(st->st_mode))
+ filetype = BTRFS_FT_SYMLINK;
+
+ ret = btrfs_insert_dir_item(trans, root, name, name_len,
+ parent_inum, &location,
+ filetype, index_cnt);
+
+ *dir_index_cnt = index_cnt;
+ index_cnt++;
+
+ return ret;
+}
+
+static int fill_inode_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_inode_item *dst, struct stat *src)
+{
+ u64 blocks = 0;
+ u64 sectorsize = root->sectorsize;
+
+ /*
+ * btrfs_inode_item has some reserved fields
+ * and represents on-disk inode entry, so
+ * zero everything to prevent information leak
+ */
+ memset(dst, 0, sizeof (*dst));
+
+ btrfs_set_stack_inode_generation(dst, trans->transid);
+ btrfs_set_stack_inode_size(dst, src->st_size);
+ btrfs_set_stack_inode_nbytes(dst, 0);
+ btrfs_set_stack_inode_block_group(dst, 0);
+ btrfs_set_stack_inode_nlink(dst, src->st_nlink);
+ btrfs_set_stack_inode_uid(dst, src->st_uid);
+ btrfs_set_stack_inode_gid(dst, src->st_gid);
+ btrfs_set_stack_inode_mode(dst, src->st_mode);
+ btrfs_set_stack_inode_rdev(dst, 0);
+ btrfs_set_stack_inode_flags(dst, 0);
+ btrfs_set_stack_timespec_sec(&dst->atime, src->st_atime);
+ btrfs_set_stack_timespec_nsec(&dst->atime, 0);
+ btrfs_set_stack_timespec_sec(&dst->ctime, src->st_ctime);
+ btrfs_set_stack_timespec_nsec(&dst->ctime, 0);
+ btrfs_set_stack_timespec_sec(&dst->mtime, src->st_mtime);
+ btrfs_set_stack_timespec_nsec(&dst->mtime, 0);
+ btrfs_set_stack_timespec_sec(&dst->otime, 0);
+ btrfs_set_stack_timespec_nsec(&dst->otime, 0);
+
+ if (S_ISDIR(src->st_mode)) {
+ btrfs_set_stack_inode_size(dst, 0);
+ btrfs_set_stack_inode_nlink(dst, 1);
+ }
+ if (S_ISREG(src->st_mode)) {
+ btrfs_set_stack_inode_size(dst, (u64)src->st_size);
+ if (src->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root))
+ btrfs_set_stack_inode_nbytes(dst, src->st_size);
+ else {
+ blocks = src->st_size / sectorsize;
+ if (src->st_size % sectorsize)
+ blocks += 1;
+ blocks *= sectorsize;
+ btrfs_set_stack_inode_nbytes(dst, blocks);
+ }
+ }
+ if (S_ISLNK(src->st_mode))
+ btrfs_set_stack_inode_nbytes(dst, src->st_size + 1);
+
+ return 0;
+}
+
+static int directory_select(const struct direct *entry)
+{
+ if ((strncmp(entry->d_name, ".", entry->d_reclen) == 0) ||
+ (strncmp(entry->d_name, "..", entry->d_reclen) == 0))
+ return 0;
+ else
+ return 1;
+}
+
+static void free_namelist(struct direct **files, int count)
+{
+ int i;
+
+ if (count < 0)
+ return;
+
+ for (i = 0; i < count; ++i)
+ free(files[i]);
+ free(files);
+}
+
+static u64 calculate_dir_inode_size(char *dirname)
+{
+ int count, i;
+ struct direct **files, *cur_file;
+ u64 dir_inode_size = 0;
+
+ count = scandir(dirname, &files, directory_select, NULL);
+
+ for (i = 0; i < count; i++) {
+ cur_file = files[i];
+ dir_inode_size += strlen(cur_file->d_name);
+ }
+
+ free_namelist(files, count);
+
+ dir_inode_size *= 2;
+ return dir_inode_size;
+}
+
+static int add_inode_items(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct stat *st, char *name,
+ u64 self_objectid, ino_t parent_inum,
+ int dir_index_cnt, struct btrfs_inode_item *inode_ret)
+{
+ int ret;
+ struct btrfs_key inode_key;
+ struct btrfs_inode_item btrfs_inode;
+ u64 objectid;
+ u64 inode_size = 0;
+ int name_len;
+
+ name_len = strlen(name);
+ fill_inode_item(trans, root, &btrfs_inode, st);
+ objectid = self_objectid;
+
+ if (S_ISDIR(st->st_mode)) {
+ inode_size = calculate_dir_inode_size(name);
+ btrfs_set_stack_inode_size(&btrfs_inode, inode_size);
+ }
+
+ inode_key.objectid = objectid;
+ inode_key.offset = 0;
+ btrfs_set_key_type(&inode_key, BTRFS_INODE_ITEM_KEY);
+
+ ret = btrfs_insert_inode(trans, root, objectid, &btrfs_inode);
+ if (ret)
+ goto fail;
+
+ ret = btrfs_insert_inode_ref(trans, root, name, name_len,
+ objectid, parent_inum, dir_index_cnt);
+ if (ret)
+ goto fail;
+
+ *inode_ret = btrfs_inode;
+fail:
+ return ret;
+}
+
+static int add_xattr_item(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 objectid,
+ const char *file_name)
+{
+ int ret;
+ int cur_name_len;
+ char xattr_list[XATTR_LIST_MAX];
+ char *cur_name;
+ char cur_value[XATTR_SIZE_MAX];
+ char delimiter = '\0';
+ char *next_location = xattr_list;
+
+ ret = llistxattr(file_name, xattr_list, XATTR_LIST_MAX);
+ if (ret < 0) {
+ if(errno == ENOTSUP)
+ return 0;
+ fprintf(stderr, "get a list of xattr failed for %s\n",
+ file_name);
+ return ret;
+ }
+ if (ret == 0)
+ return ret;
+
+ cur_name = strtok(xattr_list, &delimiter);
+ while (cur_name != NULL) {
+ cur_name_len = strlen(cur_name);
+ next_location += cur_name_len + 1;
+
+ ret = getxattr(file_name, cur_name, cur_value, XATTR_SIZE_MAX);
+ if (ret < 0) {
+ if(errno == ENOTSUP)
+ return 0;
+ fprintf(stderr, "get a xattr value failed for %s attr %s\n",
+ file_name, cur_name);
+ return ret;
+ }
+
+ ret = btrfs_insert_xattr_item(trans, root, cur_name,
+ cur_name_len, cur_value,
+ ret, objectid);
+ if (ret) {
+ fprintf(stderr, "insert a xattr item failed for %s\n",
+ file_name);
+ }
+
+ cur_name = strtok(next_location, &delimiter);
+ }
+
+ return ret;
+}
+
+static int add_symbolic_link(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ u64 objectid, const char *path_name)
+{
+ int ret;
+ u64 sectorsize = root->sectorsize;
+ char *buf = malloc(sectorsize);
+
+ ret = readlink(path_name, buf, sectorsize);
+ if (ret <= 0) {
+ fprintf(stderr, "readlink failed for %s\n", path_name);
+ goto fail;
+ }
+ if (ret >= sectorsize) {
+ fprintf(stderr, "symlink too long for %s", path_name);
+ ret = -1;
+ goto fail;
+ }
+
+ buf[ret] = '\0'; /* readlink does not do it for us */
+ ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
+ buf, ret + 1);
+fail:
+ free(buf);
+ return ret;
+}
+
+static int add_file_items(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root,
+ struct btrfs_inode_item *btrfs_inode, u64 objectid,
+ ino_t parent_inum, struct stat *st,
+ const char *path_name, int out_fd)
+{
+ int ret = -1;
+ ssize_t ret_read;
+ u64 bytes_read = 0;
+ struct btrfs_key key;
+ int blocks;
+ u32 sectorsize = root->sectorsize;
+ u64 first_block = 0;
+ u64 file_pos = 0;
+ u64 cur_bytes;
+ u64 total_bytes;
+ struct extent_buffer *eb = NULL;
+ int fd;
+
+ fd = open(path_name, O_RDONLY);
+ if (fd == -1) {
+ fprintf(stderr, "%s open failed\n", path_name);
+ return ret;
+ }
+
+ blocks = st->st_size / sectorsize;
+ if (st->st_size % sectorsize)
+ blocks += 1;
+
+ if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
+ char *buffer = malloc(st->st_size);
+ ret_read = pread64(fd, buffer, st->st_size, bytes_read);
+ if (ret_read == -1) {
+ fprintf(stderr, "%s read failed\n", path_name);
+ free(buffer);
+ goto end;
+ }
+
+ ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
+ buffer, st->st_size);
+ free(buffer);
+ goto end;
+ }
+
+ /* round up our st_size to the FS blocksize */
+ total_bytes = (u64)blocks * sectorsize;
+
+ /*
+ * do our IO in extent buffers so it can work
+ * against any raid type
+ */
+ eb = malloc(sizeof(*eb) + sectorsize);
+ if (!eb) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ memset(eb, 0, sizeof(*eb) + sectorsize);
+
+again:
+
+ /*
+ * keep our extent size at 1MB max, this makes it easier to work inside
+ * the tiny block groups created during mkfs
+ */
+ cur_bytes = min(total_bytes, 1024ULL * 1024);
+ ret = btrfs_reserve_extent(trans, root, cur_bytes, 0, 0, (u64)-1,
+ &key, 1);
+ if (ret)
+ goto end;
+
+ first_block = key.objectid;
+ bytes_read = 0;
+
+ while (bytes_read < cur_bytes) {
+
+ memset(eb->data, 0, sectorsize);
+
+ ret_read = pread64(fd, eb->data, sectorsize, file_pos + bytes_read);
+ if (ret_read == -1) {
+ fprintf(stderr, "%s read failed\n", path_name);
+ goto end;
+ }
+
+ eb->start = first_block + bytes_read;
+ eb->len = sectorsize;
+
+ /*
+ * we're doing the csum before we record the extent, but
+ * that's ok
+ */
+ ret = btrfs_csum_file_block(trans, root->fs_info->csum_root,
+ first_block + bytes_read + sectorsize,
+ first_block + bytes_read,
+ eb->data, sectorsize);
+ if (ret)
+ goto end;
+
+ ret = write_and_map_eb(trans, root, eb);
+ if (ret) {
+ fprintf(stderr, "output file write failed\n");
+ goto end;
+ }
+
+ bytes_read += sectorsize;
+ }
+
+ if (bytes_read) {
+ ret = btrfs_record_file_extent(trans, root, objectid, btrfs_inode,
+ file_pos, first_block, cur_bytes);
+ if (ret)
+ goto end;
+
+ }
+
+ file_pos += cur_bytes;
+ total_bytes -= cur_bytes;
+
+ if (total_bytes)
+ goto again;
+
+end:
+ free(eb);
+ close(fd);
+ return ret;
+}
+
+static char *make_path(char *dir, char *name)
+{
+ char *path;
+
+ path = malloc(strlen(dir) + strlen(name) + 2);
+ if (!path)
+ return NULL;
+ strcpy(path, dir);
+ if (dir[strlen(dir) - 1] != '/')
+ strcat(path, "/");
+ strcat(path, name);
+ return path;
+}
+
+static int traverse_directory(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, char *dir_name,
+ struct directory_name_entry *dir_head, int out_fd)
+{
+ int ret = 0;
+
+ struct btrfs_inode_item cur_inode;
+ struct btrfs_inode_item *inode_item;
+ int count, i, dir_index_cnt;
+ struct direct **files;
+ struct stat st;
+ struct directory_name_entry *dir_entry, *parent_dir_entry;
+ struct direct *cur_file;
+ ino_t parent_inum, cur_inum;
+ ino_t highest_inum = 0;
+ char *parent_dir_name;
+ struct btrfs_path path;
+ struct extent_buffer *leaf;
+ struct btrfs_key root_dir_key;
+ u64 root_dir_inode_size = 0;
+
+ /* Add list for source directory */
+ dir_entry = malloc(sizeof(struct directory_name_entry));
+ dir_entry->dir_name = dir_name;
+ dir_entry->path = strdup(dir_name);
+
+ parent_inum = highest_inum + BTRFS_FIRST_FREE_OBJECTID;
+ dir_entry->inum = parent_inum;
+ list_add_tail(&dir_entry->list, &dir_head->list);
+
+ btrfs_init_path(&path);
+
+ root_dir_key.objectid = btrfs_root_dirid(&root->root_item);
+ root_dir_key.offset = 0;
+ btrfs_set_key_type(&root_dir_key, BTRFS_INODE_ITEM_KEY);
+ ret = btrfs_lookup_inode(trans, root, &path, &root_dir_key, 1);
+ if (ret) {
+ fprintf(stderr, "root dir lookup error\n");
+ return -1;
+ }
+
+ leaf = path.nodes[0];
+ inode_item = btrfs_item_ptr(leaf, path.slots[0],
+ struct btrfs_inode_item);
+
+ root_dir_inode_size = calculate_dir_inode_size(dir_name);
+ btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size);
+ btrfs_mark_buffer_dirty(leaf);
+
+ btrfs_release_path(&path);
+
+ do {
+ parent_dir_entry = list_entry(dir_head->list.next,
+ struct directory_name_entry,
+ list);
+ list_del(&parent_dir_entry->list);
+
+ parent_inum = parent_dir_entry->inum;
+ parent_dir_name = parent_dir_entry->dir_name;
+ if (chdir(parent_dir_entry->path)) {
+ fprintf(stderr, "chdir error for %s\n",
+ parent_dir_name);
+ goto fail_no_files;
+ }
+
+ count = scandir(parent_dir_entry->path, &files,
+ directory_select, NULL);
+ if (count == -1)
+ {
+ fprintf(stderr, "scandir for %s failed: %s\n",
+ parent_dir_name, strerror (errno));
+ goto fail;
+ }
+
+ for (i = 0; i < count; i++) {
+ cur_file = files[i];
+
+ if (lstat(cur_file->d_name, &st) == -1) {
+ fprintf(stderr, "lstat failed for file %s\n",
+ cur_file->d_name);
+ goto fail;
+ }
+
+ cur_inum = ++highest_inum + BTRFS_FIRST_FREE_OBJECTID;
+ ret = add_directory_items(trans, root,
+ cur_inum, parent_inum,
+ cur_file->d_name,
+ &st, &dir_index_cnt);
+ if (ret) {
+ fprintf(stderr, "add_directory_items failed\n");
+ goto fail;
+ }
+
+ ret = add_inode_items(trans, root, &st,
+ cur_file->d_name, cur_inum,
+ parent_inum, dir_index_cnt,
+ &cur_inode);
+ if (ret) {
+ fprintf(stderr, "add_inode_items failed\n");
+ goto fail;
+ }
+
+ ret = add_xattr_item(trans, root,
+ cur_inum, cur_file->d_name);
+ if (ret) {
+ fprintf(stderr, "add_xattr_item failed\n");
+ if(ret != -ENOTSUP)
+ goto fail;
+ }
+
+ if (S_ISDIR(st.st_mode)) {
+ dir_entry = malloc(sizeof(struct directory_name_entry));
+ dir_entry->dir_name = cur_file->d_name;
+ dir_entry->path = make_path(parent_dir_entry->path,
+ cur_file->d_name);
+ dir_entry->inum = cur_inum;
+ list_add_tail(&dir_entry->list, &dir_head->list);
+ } else if (S_ISREG(st.st_mode)) {
+ ret = add_file_items(trans, root, &cur_inode,
+ cur_inum, parent_inum, &st,
+ cur_file->d_name, out_fd);
+ if (ret) {
+ fprintf(stderr, "add_file_items failed\n");
+ goto fail;
+ }
+ } else if (S_ISLNK(st.st_mode)) {
+ ret = add_symbolic_link(trans, root,
+ cur_inum, cur_file->d_name);
+ if (ret) {
+ fprintf(stderr, "add_symbolic_link failed\n");
+ goto fail;
+ }
+ }
+ }
+
+ free_namelist(files, count);
+ free(parent_dir_entry->path);
+ free(parent_dir_entry);
+
+ index_cnt = 2;
+
+ } while (!list_empty(&dir_head->list));
+
+ return 0;
+fail:
+ free_namelist(files, count);
+fail_no_files:
+ free(parent_dir_entry->path);
+ free(parent_dir_entry);
+ return -1;
+}
+
+static int open_target(char *output_name)
+{
+ int output_fd;
+ output_fd = open(output_name, O_CREAT | O_RDWR | O_TRUNC,
+ S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
+
+ return output_fd;
+}
+
+static int create_chunks(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root, u64 num_of_meta_chunks,
+ u64 size_of_data)
+{
+ u64 chunk_start;
+ u64 chunk_size;
+ u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
+ u64 data_type = BTRFS_BLOCK_GROUP_DATA;
+ u64 minimum_data_chunk_size = 8 * 1024 * 1024;
+ u64 i;
+ int ret;
+
+ for (i = 0; i < num_of_meta_chunks; i++) {
+ ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
+ &chunk_start, &chunk_size, meta_type);
+ BUG_ON(ret);
+ ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
+ meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
+ chunk_start, chunk_size);
+ BUG_ON(ret);
+ set_extent_dirty(&root->fs_info->free_space_cache,
+ chunk_start, chunk_start + chunk_size - 1, 0);
+ }
+
+ if (size_of_data < minimum_data_chunk_size)
+ size_of_data = minimum_data_chunk_size;
+
+ ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
+ &chunk_start, size_of_data, data_type);
+ BUG_ON(ret);
+ ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
+ data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
+ chunk_start, size_of_data);
+ BUG_ON(ret);
+ set_extent_dirty(&root->fs_info->free_space_cache,
+ chunk_start, chunk_start + size_of_data - 1, 0);
+ return ret;
+}
+
+static int make_image(char *source_dir, struct btrfs_root *root, int out_fd)
+{
+ int ret;
+ struct btrfs_trans_handle *trans;
+
+ struct stat root_st;
+
+ struct directory_name_entry dir_head;
+
+ struct directory_name_entry *dir_entry = NULL;
+
+ ret = lstat(source_dir, &root_st);
+ if (ret) {
+ fprintf(stderr, "unable to lstat the %s\n", source_dir);
+ goto fail;
+ }
+
+ INIT_LIST_HEAD(&dir_head.list);
+
+ trans = btrfs_start_transaction(root, 1);
+ ret = traverse_directory(trans, root, source_dir, &dir_head, out_fd);
+ if (ret) {
+ fprintf(stderr, "unable to traverse_directory\n");
+ goto fail;
+ }
+ btrfs_commit_transaction(trans, root);
+
+ printf("Making image is completed.\n");
+ return 0;
+fail:
+ while (!list_empty(&dir_head.list)) {
+ dir_entry = list_entry(dir_head.list.next,
+ struct directory_name_entry, list);
+ list_del(&dir_entry->list);
+ free(dir_entry);
+ }
+ fprintf(stderr, "Making image is aborted.\n");
+ return -1;
+}
+
+/*
+ * This ignores symlinks with unreadable targets and subdirs that can't
+ * be read. It's a best-effort to give a rough estimate of the size of
+ * a subdir. It doesn't guarantee that prepopulating btrfs from this
+ * tree won't still run out of space.
+ *
+ * The rounding up to 4096 is questionable. Previous code used du -B 4096.
+ */
+static u64 global_total_size;
+static int ftw_add_entry_size(const char *fpath, const struct stat *st,
+ int type)
+{
+ if (type == FTW_F || type == FTW_D)
+ global_total_size += round_up(st->st_size, 4096);
+
+ return 0;
+}
+
+static u64 size_sourcedir(char *dir_name, u64 sectorsize,
+ u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret)
+{
+ u64 dir_size = 0;
+ u64 total_size = 0;
+ int ret;
+ u64 default_chunk_size = 8 * 1024 * 1024; /* 8MB */
+ u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */
+ u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */
+ u64 num_of_meta_chunks = 0;
+ u64 num_of_data_chunks = 0;
+ u64 num_of_allocated_meta_chunks =
+ allocated_meta_size / default_chunk_size;
+
+ global_total_size = 0;
+ ret = ftw(dir_name, ftw_add_entry_size, 10);
+ dir_size = global_total_size;
+ if (ret < 0) {
+ fprintf(stderr, "ftw subdir walk of '%s' failed: %s\n",
+ dir_name, strerror(errno));
+ exit(1);
+ }
+
+ num_of_data_chunks = (dir_size + default_chunk_size - 1) /
+ default_chunk_size;
+
+ num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
+ if (((dir_size / 2) % default_chunk_size) != 0)
+ num_of_meta_chunks++;
+ if (num_of_meta_chunks <= num_of_allocated_meta_chunks)
+ num_of_meta_chunks = 0;
+ else
+ num_of_meta_chunks -= num_of_allocated_meta_chunks;
+
+ total_size = allocated_total_size +
+ (num_of_data_chunks * default_chunk_size) +
+ (num_of_meta_chunks * default_chunk_size);
+
+ *num_of_meta_chunks_ret = num_of_meta_chunks;
+ *size_of_data_ret = num_of_data_chunks * default_chunk_size;
+ return total_size;
+}
+
+static int zero_output_file(int out_fd, u64 size, u32 sectorsize)
+{
+ int len = sectorsize;
+ int loop_num = size / sectorsize;
+ u64 location = 0;
+ char *buf = malloc(len);
+ int ret = 0, i;
+ ssize_t written;
+
+ if (!buf)
+ return -ENOMEM;
+ memset(buf, 0, len);
+ for (i = 0; i < loop_num; i++) {
+ written = pwrite64(out_fd, buf, len, location);
+ if (written != len)
+ ret = -EIO;
+ location += sectorsize;
+ }
+ free(buf);
+ return ret;
+}
+
+static int check_leaf_or_node_size(u32 size, u32 sectorsize)
+{
+ if (size < sectorsize) {
+ fprintf(stderr,
+ "Illegal leafsize (or nodesize) %u (smaller than %u)\n",
+ size, sectorsize);
+ return -1;
+ } else if (size > BTRFS_MAX_METADATA_BLOCKSIZE) {
+ fprintf(stderr,
+ "Illegal leafsize (or nodesize) %u (larger than %u)\n",
+ size, BTRFS_MAX_METADATA_BLOCKSIZE);
+ return -1;
+ } else if (size & (sectorsize - 1)) {
+ fprintf(stderr,
+ "Illegal leafsize (or nodesize) %u (not align to %u)\n",
+ size, sectorsize);
+ return -1;
+ }
+ return 0;
+}
+
+static int is_ssd(const char *file)
+{
+ blkid_probe probe;
+ char wholedisk[32];
+ char sysfs_path[PATH_MAX];
+ dev_t devno;
+ int fd;
+ char rotational;
+ int ret;
+
+ probe = blkid_new_probe_from_filename(file);
+ if (!probe)
+ return 0;
+
+ /* Device number of this disk (possibly a partition) */
+ devno = blkid_probe_get_devno(probe);
+ if (!devno) {
+ blkid_free_probe(probe);
+ return 0;
+ }
+
+ /* Get whole disk name (not full path) for this devno */
+ ret = blkid_devno_to_wholedisk(devno,
+ wholedisk, sizeof(wholedisk), NULL);
+ if (ret) {
+ blkid_free_probe(probe);
+ return 0;
+ }
+
+ snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational",
+ wholedisk);
+
+ blkid_free_probe(probe);
+
+ fd = open(sysfs_path, O_RDONLY);
+ if (fd < 0) {
+ return 0;
+ }
+
+ if (read(fd, &rotational, sizeof(char)) < sizeof(char)) {
+ close(fd);
+ return 0;
+ }
+ close(fd);
+
+ return !atoi((const char *)&rotational);
+}
+
+#define BTRFS_FEATURE_LIST_ALL (1ULL << 63)
+
+static const struct btrfs_fs_feature {
+ const char *name;
+ u64 flag;
+ const char *desc;
+} mkfs_features[] = {
+ { "mixed-bg", BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS,
+ "mixed data and metadata block groups" },
+ { "extref", BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF,
+ "increased hardlink limit per file to 65536" },
+ { "raid56", BTRFS_FEATURE_INCOMPAT_RAID56,
+ "raid56 extended format" },
+ { "skinny-metadata", BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
+ "reduced-size metadata extent refs" },
+ { "no-holes", BTRFS_FEATURE_INCOMPAT_NO_HOLES,
+ "no explicit hole extents for files" },
+ /* Keep this one last */
+ { "list-all", BTRFS_FEATURE_LIST_ALL, NULL }
};
+static void list_all_fs_features(void)
+{
+ int i;
+
+ fprintf(stderr, "Filesystem features available at mkfs time:\n");
+ for (i = 0; i < ARRAY_SIZE(mkfs_features) - 1; i++) {
+ char *is_default = "";
+
+ if (mkfs_features[i].flag & DEFAULT_MKFS_FEATURES)
+ is_default = ", default";
+ fprintf(stderr, "%-20s- %s (0x%llx%s)\n",
+ mkfs_features[i].name,
+ mkfs_features[i].desc,
+ mkfs_features[i].flag,
+ is_default);
+ }
+}
+
+static int parse_one_fs_feature(const char *name, u64 *flags)
+{
+ int i;
+ int found = 0;
+
+ for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
+ if (name[0] == '^' &&
+ !strcmp(mkfs_features[i].name, name + 1)) {
+ *flags &= ~ mkfs_features[i].flag;
+ found = 1;
+ } else if (!strcmp(mkfs_features[i].name, name)) {
+ *flags |= mkfs_features[i].flag;
+ found = 1;
+ }
+ }
+
+ return !found;
+}
+
+static void process_fs_features(u64 flags)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
+ if (flags & mkfs_features[i].flag) {
+ printf("Turning ON incompat feature '%s': %s\n",
+ mkfs_features[i].name,
+ mkfs_features[i].desc);
+ }
+ }
+}
+
+
+/*
+ * Return NULL if all features were parsed fine, otherwise return the name of
+ * the first unparsed.
+ */
+static char* parse_fs_features(char *namelist, u64 *flags)
+{
+ char *this_char;
+ char *save_ptr = NULL; /* Satisfy static checkers */
+
+ for (this_char = strtok_r(namelist, ",", &save_ptr);
+ this_char != NULL;
+ this_char = strtok_r(NULL, ",", &save_ptr)) {
+ if (parse_one_fs_feature(this_char, flags))
+ return this_char;
+ }
+
+ return NULL;
+}
+
int main(int ac, char **av)
{
char *file;
u64 dev_block_count = 0;
u64 blocks[7];
u64 alloc_start = 0;
- u64 metadata_profile = BTRFS_BLOCK_GROUP_RAID1 | BTRFS_BLOCK_GROUP_DUP;
- u64 data_profile = BTRFS_BLOCK_GROUP_RAID0;
- u32 leafsize = getpagesize();
+ u64 metadata_profile = 0;
+ u64 data_profile = 0;
+ u32 leafsize = max_t(u32, sysconf(_SC_PAGESIZE), DEFAULT_MKFS_LEAF_SIZE);
u32 sectorsize = 4096;
u32 nodesize = leafsize;
u32 stripesize = 4096;
int zero_end = 1;
int option_index = 0;
int fd;
- int first_fd;
int ret;
int i;
+ int mixed = 0;
+ int leaf_forced = 0;
+ int data_profile_opt = 0;
+ int metadata_profile_opt = 0;
+ int discard = 1;
+ int ssd = 0;
+ int force_overwrite = 0;
+
+ char *source_dir = NULL;
+ int source_dir_set = 0;
+ u64 num_of_meta_chunks = 0;
+ u64 size_of_data = 0;
+ u64 source_dir_size = 0;
+ int dev_cnt = 0;
+ int saved_optind;
+ char estr[100];
+ u64 features = DEFAULT_MKFS_FEATURES;
while(1) {
int c;
- c = getopt_long(ac, av, "A:b:l:n:s:m:d:L:", long_options,
- &option_index);
+ c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:O:r:VMK",
+ long_options, &option_index);
if (c < 0)
break;
switch(c) {
case 'A':
alloc_start = parse_size(optarg);
break;
+ case 'f':
+ force_overwrite = 1;
+ break;
case 'd':
data_profile = parse_profile(optarg);
+ data_profile_opt = 1;
break;
case 'l':
+ case 'n':
+ nodesize = parse_size(optarg);
leafsize = parse_size(optarg);
+ leaf_forced = 1;
break;
case 'L':
label = parse_label(optarg);
break;
case 'm':
metadata_profile = parse_profile(optarg);
+ metadata_profile_opt = 1;
break;
- case 'n':
- nodesize = parse_size(optarg);
+ case 'M':
+ mixed = 1;
+ break;
+ case 'O': {
+ char *orig = strdup(optarg);
+ char *tmp = orig;
+
+ tmp = parse_fs_features(tmp, &features);
+ if (tmp) {
+ fprintf(stderr,
+ "Unrecognized filesystem feature '%s'\n",
+ tmp);
+ free(orig);
+ exit(1);
+ }
+ free(orig);
+ if (features & BTRFS_FEATURE_LIST_ALL) {
+ list_all_fs_features();
+ exit(0);
+ }
break;
+ }
case 's':
sectorsize = parse_size(optarg);
break;
case 'b':
block_count = parse_size(optarg);
- if (block_count < 256*1024*1024) {
- fprintf(stderr, "File system size "
- "%llu bytes is too small, "
- "256M is required at least\n",
- block_count);
- exit(1);
+ if (block_count <= 1024*1024*1024) {
+ printf("SMALL VOLUME: forcing mixed "
+ "metadata/data groups\n");
+ mixed = 1;
}
zero_end = 0;
break;
+ case 'V':
+ print_version();
+ break;
+ case 'r':
+ source_dir = optarg;
+ source_dir_set = 1;
+ break;
+ case 'K':
+ discard = 0;
+ break;
default:
print_usage();
}
}
- sectorsize = max(sectorsize, (u32)getpagesize());
- if (leafsize < sectorsize || (leafsize & (sectorsize - 1))) {
- fprintf(stderr, "Illegal leafsize %u\n", leafsize);
+ sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE));
+ if (check_leaf_or_node_size(leafsize, sectorsize))
exit(1);
- }
- if (nodesize < sectorsize || (nodesize & (sectorsize - 1))) {
- fprintf(stderr, "Illegal nodesize %u\n", nodesize);
+ if (check_leaf_or_node_size(nodesize, sectorsize))
exit(1);
- }
- ac = ac - optind;
- if (ac == 0)
+ saved_optind = optind;
+ dev_cnt = ac - optind;
+ if (dev_cnt == 0)
print_usage();
- printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
- printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
+ if (source_dir_set && dev_cnt > 1) {
+ fprintf(stderr,
+ "The -r option is limited to a single device\n");
+ exit(1);
+ }
+ while (dev_cnt-- > 0) {
+ file = av[optind++];
+ if (is_block_device(file))
+ if (test_dev_for_mkfs(file, force_overwrite, estr)) {
+ fprintf(stderr, "Error: %s", estr);
+ exit(1);
+ }
+ }
+
+ optind = saved_optind;
+ dev_cnt = ac - optind;
file = av[optind++];
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n", file);
- exit(1);
+ ssd = is_ssd(file);
+
+ if (is_vol_small(file)) {
+ printf("SMALL VOLUME: forcing mixed metadata/data groups\n");
+ mixed = 1;
}
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
+
+ /*
+ * Set default profiles according to number of added devices.
+ * For mixed groups defaults are single/single.
+ */
+ if (!mixed) {
+ if (!metadata_profile_opt) {
+ if (dev_cnt == 1 && ssd)
+ printf("Detected a SSD, turning off metadata "
+ "duplication. Mkfs with -m dup if you want to "
+ "force metadata duplication.\n");
+
+ metadata_profile = (dev_cnt > 1) ?
+ BTRFS_BLOCK_GROUP_RAID1 : (ssd) ?
+ 0: BTRFS_BLOCK_GROUP_DUP;
+ }
+ if (!data_profile_opt) {
+ data_profile = (dev_cnt > 1) ?
+ BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
+ }
+ } else {
+ u32 best_leafsize = max_t(u32, sysconf(_SC_PAGESIZE), sectorsize);
+
+ if (metadata_profile_opt || data_profile_opt) {
+ if (metadata_profile != data_profile) {
+ fprintf(stderr,
+ "ERROR: With mixed block groups data and metadata profiles must be the same\n");
+ exit(1);
+ }
+ }
+
+ if (!leaf_forced) {
+ leafsize = best_leafsize;
+ nodesize = best_leafsize;
+ if (check_leaf_or_node_size(leafsize, sectorsize))
+ exit(1);
+ }
+ if (leafsize != sectorsize) {
+ fprintf(stderr, "Error: mixed metadata/data block groups "
+ "require metadata blocksizes equal to the sectorsize\n");
+ exit(1);
+ }
+ }
+
+ ret = test_num_disk_vs_raid(metadata_profile, data_profile,
+ dev_cnt, mixed, estr);
+ if (ret) {
+ fprintf(stderr, "Error: %s\n", estr);
exit(1);
}
- ac--;
- fd = open(file, O_RDWR);
- if (fd < 0) {
- fprintf(stderr, "unable to open %s\n", file);
+
+ /* if we are here that means all devs are good to btrfsify */
+ printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
+ printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
+
+ dev_cnt--;
+
+ if (!source_dir_set) {
+ /*
+ * open without O_EXCL so that the problem should not
+ * occur by the following processing.
+ * (btrfs_register_one_device() fails if O_EXCL is on)
+ */
+ fd = open(file, O_RDWR);
+ if (fd < 0) {
+ fprintf(stderr, "unable to open %s: %s\n", file,
+ strerror(errno));
+ exit(1);
+ }
+ first_file = file;
+ ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
+ block_count, &mixed, discard);
+ if (ret) {
+ close(fd);
+ exit(1);
+ }
+ if (block_count && block_count > dev_block_count) {
+ fprintf(stderr, "%s is smaller than requested size\n", file);
+ exit(1);
+ }
+ } else {
+ fd = open_target(file);
+ if (fd < 0) {
+ fprintf(stderr, "unable to open the %s\n", file);
+ exit(1);
+ }
+
+ first_file = file;
+ source_dir_size = size_sourcedir(source_dir, sectorsize,
+ &num_of_meta_chunks, &size_of_data);
+ if(block_count < source_dir_size)
+ block_count = source_dir_size;
+ ret = zero_output_file(fd, block_count, sectorsize);
+ if (ret) {
+ fprintf(stderr, "unable to zero the output file\n");
+ exit(1);
+ }
+ /* our "device" is the new image file */
+ dev_block_count = block_count;
+ }
+
+ /* To create the first block group and chunk 0 in make_btrfs */
+ if (dev_block_count < BTRFS_MKFS_SYSTEM_GROUP_SIZE) {
+ fprintf(stderr, "device is too small to make filesystem\n");
exit(1);
}
- first_fd = fd;
- first_file = file;
- ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count);
- if (block_count == 0)
- block_count = dev_block_count;
blocks[0] = BTRFS_SUPER_INFO_OFFSET;
for (i = 1; i < 7; i++) {
leafsize * i;
}
- ret = make_btrfs(fd, file, label, blocks, block_count,
+ /*
+ * FS features that can be set by other means than -O
+ * just set the bit here
+ */
+ if (mixed)
+ features |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
+
+ if ((data_profile | metadata_profile) &
+ (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
+ features |= BTRFS_FEATURE_INCOMPAT_RAID56;
+ }
+
+ process_fs_features(features);
+
+ ret = make_btrfs(fd, file, label, blocks, dev_block_count,
nodesize, leafsize,
- sectorsize, stripesize);
+ sectorsize, stripesize, features);
if (ret) {
- fprintf(stderr, "error during mkfs %d\n", ret);
+ fprintf(stderr, "error during mkfs: %s\n", strerror(-ret));
+ exit(1);
+ }
+
+ root = open_ctree(file, 0, OPEN_CTREE_WRITES);
+ if (!root) {
+ fprintf(stderr, "Open ctree failed\n");
+ close(fd);
exit(1);
}
- root = open_ctree(file, 0, O_RDWR);
root->fs_info->alloc_start = alloc_start;
- ret = make_root_dir(root);
+ ret = make_root_dir(root, mixed);
if (ret) {
fprintf(stderr, "failed to setup the root directory\n");
exit(1);
trans = btrfs_start_transaction(root, 1);
- if (ac == 0)
+ if (dev_cnt == 0)
goto raid_groups;
btrfs_register_one_device(file);
- if (!root) {
- fprintf(stderr, "ctree init failed\n");
- return -1;
- }
zero_end = 1;
- while(ac-- > 0) {
+ while (dev_cnt-- > 0) {
+ int old_mixed = mixed;
+
file = av[optind++];
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n",
- file);
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
- exit(1);
- }
+
+ /*
+ * open without O_EXCL so that the problem should not
+ * occur by the following processing.
+ * (btrfs_register_one_device() fails if O_EXCL is on)
+ */
fd = open(file, O_RDWR);
if (fd < 0) {
- fprintf(stderr, "unable to open %s\n", file);
+ fprintf(stderr, "unable to open %s: %s\n", file,
+ strerror(errno));
exit(1);
}
ret = btrfs_device_already_in_root(root, fd,
close(fd);
continue;
}
- ret = btrfs_prepare_device(fd, file, zero_end,
- &dev_block_count);
-
- BUG_ON(ret);
+ ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
+ block_count, &mixed, discard);
+ if (ret) {
+ close(fd);
+ exit(1);
+ }
+ mixed = old_mixed;
ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
sectorsize, sectorsize, sectorsize);
}
raid_groups:
- ret = create_raid_groups(trans, root, data_profile,
- metadata_profile);
- BUG_ON(ret);
+ if (!source_dir_set) {
+ ret = create_raid_groups(trans, root, data_profile,
+ data_profile_opt, metadata_profile,
+ metadata_profile_opt, mixed, ssd);
+ BUG_ON(ret);
+ }
ret = create_data_reloc_tree(trans, root);
BUG_ON(ret);
printf("fs created label %s on %s\n\tnodesize %u leafsize %u "
"sectorsize %u size %s\n",
label, first_file, nodesize, leafsize, sectorsize,
- pretty_sizes(btrfs_super_total_bytes(&root->fs_info->super_copy)));
+ pretty_size(btrfs_super_total_bytes(root->fs_info->super_copy)));
printf("%s\n", BTRFS_BUILD_VERSION);
btrfs_commit_transaction(trans, root);
+
+ if (source_dir_set) {
+ trans = btrfs_start_transaction(root, 1);
+ ret = create_chunks(trans, root,
+ num_of_meta_chunks, size_of_data);
+ BUG_ON(ret);
+ btrfs_commit_transaction(trans, root);
+
+ ret = make_image(source_dir, root, fd);
+ BUG_ON(ret);
+ }
+
ret = close_ctree(root);
BUG_ON(ret);
-
free(label);
return 0;
}
-
projects / platform / upstream / btrfs-progs.git / blobdiff