2 * Copyright (C) 2007 Oracle. All rights reserved.
4 * This program is free software; you can redistribute it and/or
5 * modify it under the terms of the GNU General Public
6 * License v2 as published by the Free Software Foundation.
8 * This program is distributed in the hope that it will be useful,
9 * but WITHOUT ANY WARRANTY; without even the implied warranty of
10 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 * General Public License for more details.
13 * You should have received a copy of the GNU General Public
14 * License along with this program; if not, write to the
15 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
16 * Boston, MA 021110-1307, USA.
19 #include "kerncompat.h"
20 #include "androidcompat.h"
22 #include <sys/ioctl.h>
23 #include <sys/mount.h>
27 #include <sys/types.h>
29 /* #include <sys/dir.h> included via androidcompat.h */
33 #include <uuid/uuid.h>
35 #include <sys/xattr.h>
37 #include <linux/limits.h>
38 #include <blkid/blkid.h>
43 #include "transaction.h"
45 #include "list_sort.h"
47 static u64 index_cnt
= 2;
48 static int verbose
= 1;
50 struct directory_name_entry
{
54 struct list_head list
;
57 struct mkfs_allocation
{
64 static int create_metadata_block_groups(struct btrfs_root
*root
, int mixed
,
65 struct mkfs_allocation
*allocation
)
67 struct btrfs_trans_handle
*trans
;
73 trans
= btrfs_start_transaction(root
, 1);
74 bytes_used
= btrfs_super_bytes_used(root
->fs_info
->super_copy
);
76 root
->fs_info
->system_allocs
= 1;
77 ret
= btrfs_make_block_group(trans
, root
, bytes_used
,
78 BTRFS_BLOCK_GROUP_SYSTEM
,
79 BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
80 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE
);
81 allocation
->system
+= BTRFS_MKFS_SYSTEM_GROUP_SIZE
;
86 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
87 &chunk_start
, &chunk_size
,
88 BTRFS_BLOCK_GROUP_METADATA
|
89 BTRFS_BLOCK_GROUP_DATA
);
91 error("no space to allocate data/metadata chunk");
96 ret
= btrfs_make_block_group(trans
, root
, 0,
97 BTRFS_BLOCK_GROUP_METADATA
|
98 BTRFS_BLOCK_GROUP_DATA
,
99 BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
100 chunk_start
, chunk_size
);
103 allocation
->mixed
+= chunk_size
;
105 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
106 &chunk_start
, &chunk_size
,
107 BTRFS_BLOCK_GROUP_METADATA
);
108 if (ret
== -ENOSPC
) {
109 error("no space to allocate metadata chunk");
114 ret
= btrfs_make_block_group(trans
, root
, 0,
115 BTRFS_BLOCK_GROUP_METADATA
,
116 BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
117 chunk_start
, chunk_size
);
118 allocation
->metadata
+= chunk_size
;
123 root
->fs_info
->system_allocs
= 0;
124 ret
= btrfs_commit_transaction(trans
, root
);
130 static int create_data_block_groups(struct btrfs_trans_handle
*trans
,
131 struct btrfs_root
*root
, int mixed
,
132 struct mkfs_allocation
*allocation
)
139 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
140 &chunk_start
, &chunk_size
,
141 BTRFS_BLOCK_GROUP_DATA
);
142 if (ret
== -ENOSPC
) {
143 error("no space to allocate data chunk");
148 ret
= btrfs_make_block_group(trans
, root
, 0,
149 BTRFS_BLOCK_GROUP_DATA
,
150 BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
151 chunk_start
, chunk_size
);
152 allocation
->data
+= chunk_size
;
161 static int make_root_dir(struct btrfs_trans_handle
*trans
, struct btrfs_root
*root
,
162 struct mkfs_allocation
*allocation
)
164 struct btrfs_key location
;
167 ret
= btrfs_make_root_dir(trans
, root
->fs_info
->tree_root
,
168 BTRFS_ROOT_TREE_DIR_OBJECTID
);
171 ret
= btrfs_make_root_dir(trans
, root
, BTRFS_FIRST_FREE_OBJECTID
);
174 memcpy(&location
, &root
->fs_info
->fs_root
->root_key
, sizeof(location
));
175 location
.offset
= (u64
)-1;
176 ret
= btrfs_insert_dir_item(trans
, root
->fs_info
->tree_root
,
178 btrfs_super_root_dir(root
->fs_info
->super_copy
),
179 &location
, BTRFS_FT_DIR
, 0);
183 ret
= btrfs_insert_inode_ref(trans
, root
->fs_info
->tree_root
,
184 "default", 7, location
.objectid
,
185 BTRFS_ROOT_TREE_DIR_OBJECTID
, 0);
193 static int __recow_root(struct btrfs_trans_handle
*trans
,
194 struct btrfs_root
*root
)
196 struct extent_buffer
*tmp
;
199 if (trans
->transid
!= btrfs_root_generation(&root
->root_item
)) {
200 extent_buffer_get(root
->node
);
201 ret
= __btrfs_cow_block(trans
, root
, root
->node
,
202 NULL
, 0, &tmp
, 0, 0);
205 free_extent_buffer(tmp
);
211 static int recow_roots(struct btrfs_trans_handle
*trans
,
212 struct btrfs_root
*root
)
214 struct btrfs_fs_info
*info
= root
->fs_info
;
217 ret
= __recow_root(trans
, info
->fs_root
);
220 ret
= __recow_root(trans
, info
->tree_root
);
223 ret
= __recow_root(trans
, info
->extent_root
);
226 ret
= __recow_root(trans
, info
->chunk_root
);
229 ret
= __recow_root(trans
, info
->dev_root
);
232 ret
= __recow_root(trans
, info
->csum_root
);
239 static int create_one_raid_group(struct btrfs_trans_handle
*trans
,
240 struct btrfs_root
*root
, u64 type
,
241 struct mkfs_allocation
*allocation
)
248 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
249 &chunk_start
, &chunk_size
, type
);
250 if (ret
== -ENOSPC
) {
251 error("not enough free space to allocate chunk");
257 ret
= btrfs_make_block_group(trans
, root
->fs_info
->extent_root
, 0,
258 type
, BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
259 chunk_start
, chunk_size
);
261 type
&= BTRFS_BLOCK_GROUP_TYPE_MASK
;
262 if (type
== BTRFS_BLOCK_GROUP_DATA
) {
263 allocation
->data
+= chunk_size
;
264 } else if (type
== BTRFS_BLOCK_GROUP_METADATA
) {
265 allocation
->metadata
+= chunk_size
;
266 } else if (type
== BTRFS_BLOCK_GROUP_SYSTEM
) {
267 allocation
->system
+= chunk_size
;
269 (BTRFS_BLOCK_GROUP_METADATA
| BTRFS_BLOCK_GROUP_DATA
)) {
270 allocation
->mixed
+= chunk_size
;
272 error("unrecognized profile type: 0x%llx",
273 (unsigned long long)type
);
280 static int create_raid_groups(struct btrfs_trans_handle
*trans
,
281 struct btrfs_root
*root
, u64 data_profile
,
282 u64 metadata_profile
, int mixed
,
283 struct mkfs_allocation
*allocation
)
287 if (metadata_profile
) {
288 u64 meta_flags
= BTRFS_BLOCK_GROUP_METADATA
;
290 ret
= create_one_raid_group(trans
, root
,
291 BTRFS_BLOCK_GROUP_SYSTEM
|
292 metadata_profile
, allocation
);
297 meta_flags
|= BTRFS_BLOCK_GROUP_DATA
;
299 ret
= create_one_raid_group(trans
, root
, meta_flags
|
300 metadata_profile
, allocation
);
305 if (!mixed
&& data_profile
) {
306 ret
= create_one_raid_group(trans
, root
,
307 BTRFS_BLOCK_GROUP_DATA
|
308 data_profile
, allocation
);
312 ret
= recow_roots(trans
, root
);
317 static int create_data_reloc_tree(struct btrfs_trans_handle
*trans
,
318 struct btrfs_root
*root
)
320 struct btrfs_key location
;
321 struct btrfs_root_item root_item
;
322 struct extent_buffer
*tmp
;
323 u64 objectid
= BTRFS_DATA_RELOC_TREE_OBJECTID
;
326 ret
= btrfs_copy_root(trans
, root
, root
->node
, &tmp
, objectid
);
330 memcpy(&root_item
, &root
->root_item
, sizeof(root_item
));
331 btrfs_set_root_bytenr(&root_item
, tmp
->start
);
332 btrfs_set_root_level(&root_item
, btrfs_header_level(tmp
));
333 btrfs_set_root_generation(&root_item
, trans
->transid
);
334 free_extent_buffer(tmp
);
336 location
.objectid
= objectid
;
337 location
.type
= BTRFS_ROOT_ITEM_KEY
;
339 ret
= btrfs_insert_root(trans
, root
->fs_info
->tree_root
,
340 &location
, &root_item
);
345 static void print_usage(int ret
)
347 printf("usage: mkfs.btrfs [options] dev [ dev ... ]\n");
348 printf("options:\n");
349 printf("\t-A|--alloc-start START the offset to start the FS\n");
350 printf("\t-b|--byte-count SIZE total number of bytes in the FS\n");
351 printf("\t-d|--data PROFILE data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
352 printf("\t-f|--force force overwrite of existing filesystem\n");
353 printf("\t-l|--leafsize SIZE deprecated, alias for nodesize\n");
354 printf("\t-L|--label LABEL set a label\n");
355 printf("\t-m|--metadata PROFILE metadata profile, values like data profile\n");
356 printf("\t-M|--mixed mix metadata and data together\n");
357 printf("\t-n|--nodesize SIZE size of btree nodes\n");
358 printf("\t-s|--sectorsize SIZE min block allocation (may not mountable by current kernel)\n");
359 printf("\t-r|--rootdir DIR the source directory\n");
360 printf("\t-K|--nodiscard do not perform whole device TRIM\n");
361 printf("\t-O|--features LIST comma separated list of filesystem features, use '-O list-all' to list features\n");
362 printf("\t-U|--uuid UUID specify the filesystem UUID\n");
363 printf("\t-q|--quiet no messages except errors\n");
364 printf("\t-V|--version print the mkfs.btrfs version and exit\n");
368 static u64
parse_profile(char *s
)
370 if (strcasecmp(s
, "raid0") == 0) {
371 return BTRFS_BLOCK_GROUP_RAID0
;
372 } else if (strcasecmp(s
, "raid1") == 0) {
373 return BTRFS_BLOCK_GROUP_RAID1
;
374 } else if (strcasecmp(s
, "raid5") == 0) {
375 return BTRFS_BLOCK_GROUP_RAID5
;
376 } else if (strcasecmp(s
, "raid6") == 0) {
377 return BTRFS_BLOCK_GROUP_RAID6
;
378 } else if (strcasecmp(s
, "raid10") == 0) {
379 return BTRFS_BLOCK_GROUP_RAID10
;
380 } else if (strcasecmp(s
, "dup") == 0) {
381 return BTRFS_BLOCK_GROUP_DUP
;
382 } else if (strcasecmp(s
, "single") == 0) {
385 error("unknown profile %s", s
);
392 static char *parse_label(char *input
)
394 int len
= strlen(input
);
396 if (len
>= BTRFS_LABEL_SIZE
) {
397 error("label %s is too long (max %d)", input
,
398 BTRFS_LABEL_SIZE
- 1);
401 return strdup(input
);
404 static int add_directory_items(struct btrfs_trans_handle
*trans
,
405 struct btrfs_root
*root
, u64 objectid
,
406 ino_t parent_inum
, const char *name
,
407 struct stat
*st
, int *dir_index_cnt
)
411 struct btrfs_key location
;
414 name_len
= strlen(name
);
416 location
.objectid
= objectid
;
418 btrfs_set_key_type(&location
, BTRFS_INODE_ITEM_KEY
);
420 if (S_ISDIR(st
->st_mode
))
421 filetype
= BTRFS_FT_DIR
;
422 if (S_ISREG(st
->st_mode
))
423 filetype
= BTRFS_FT_REG_FILE
;
424 if (S_ISLNK(st
->st_mode
))
425 filetype
= BTRFS_FT_SYMLINK
;
427 ret
= btrfs_insert_dir_item(trans
, root
, name
, name_len
,
428 parent_inum
, &location
,
429 filetype
, index_cnt
);
432 ret
= btrfs_insert_inode_ref(trans
, root
, name
, name_len
,
433 objectid
, parent_inum
, index_cnt
);
434 *dir_index_cnt
= index_cnt
;
440 static int fill_inode_item(struct btrfs_trans_handle
*trans
,
441 struct btrfs_root
*root
,
442 struct btrfs_inode_item
*dst
, struct stat
*src
)
445 u64 sectorsize
= root
->sectorsize
;
448 * btrfs_inode_item has some reserved fields
449 * and represents on-disk inode entry, so
450 * zero everything to prevent information leak
452 memset(dst
, 0, sizeof (*dst
));
454 btrfs_set_stack_inode_generation(dst
, trans
->transid
);
455 btrfs_set_stack_inode_size(dst
, src
->st_size
);
456 btrfs_set_stack_inode_nbytes(dst
, 0);
457 btrfs_set_stack_inode_block_group(dst
, 0);
458 btrfs_set_stack_inode_nlink(dst
, src
->st_nlink
);
459 btrfs_set_stack_inode_uid(dst
, src
->st_uid
);
460 btrfs_set_stack_inode_gid(dst
, src
->st_gid
);
461 btrfs_set_stack_inode_mode(dst
, src
->st_mode
);
462 btrfs_set_stack_inode_rdev(dst
, 0);
463 btrfs_set_stack_inode_flags(dst
, 0);
464 btrfs_set_stack_timespec_sec(&dst
->atime
, src
->st_atime
);
465 btrfs_set_stack_timespec_nsec(&dst
->atime
, 0);
466 btrfs_set_stack_timespec_sec(&dst
->ctime
, src
->st_ctime
);
467 btrfs_set_stack_timespec_nsec(&dst
->ctime
, 0);
468 btrfs_set_stack_timespec_sec(&dst
->mtime
, src
->st_mtime
);
469 btrfs_set_stack_timespec_nsec(&dst
->mtime
, 0);
470 btrfs_set_stack_timespec_sec(&dst
->otime
, 0);
471 btrfs_set_stack_timespec_nsec(&dst
->otime
, 0);
473 if (S_ISDIR(src
->st_mode
)) {
474 btrfs_set_stack_inode_size(dst
, 0);
475 btrfs_set_stack_inode_nlink(dst
, 1);
477 if (S_ISREG(src
->st_mode
)) {
478 btrfs_set_stack_inode_size(dst
, (u64
)src
->st_size
);
479 if (src
->st_size
<= BTRFS_MAX_INLINE_DATA_SIZE(root
))
480 btrfs_set_stack_inode_nbytes(dst
, src
->st_size
);
482 blocks
= src
->st_size
/ sectorsize
;
483 if (src
->st_size
% sectorsize
)
485 blocks
*= sectorsize
;
486 btrfs_set_stack_inode_nbytes(dst
, blocks
);
489 if (S_ISLNK(src
->st_mode
))
490 btrfs_set_stack_inode_nbytes(dst
, src
->st_size
+ 1);
495 static int directory_select(const struct direct
*entry
)
497 if ((strncmp(entry
->d_name
, ".", entry
->d_reclen
) == 0) ||
498 (strncmp(entry
->d_name
, "..", entry
->d_reclen
) == 0))
504 static void free_namelist(struct direct
**files
, int count
)
511 for (i
= 0; i
< count
; ++i
)
516 static u64
calculate_dir_inode_size(char *dirname
)
519 struct direct
**files
, *cur_file
;
520 u64 dir_inode_size
= 0;
522 count
= scandir(dirname
, &files
, directory_select
, NULL
);
524 for (i
= 0; i
< count
; i
++) {
526 dir_inode_size
+= strlen(cur_file
->d_name
);
529 free_namelist(files
, count
);
532 return dir_inode_size
;
535 static int add_inode_items(struct btrfs_trans_handle
*trans
,
536 struct btrfs_root
*root
,
537 struct stat
*st
, char *name
,
538 u64 self_objectid
, ino_t parent_inum
,
539 int dir_index_cnt
, struct btrfs_inode_item
*inode_ret
)
542 struct btrfs_key inode_key
;
543 struct btrfs_inode_item btrfs_inode
;
547 fill_inode_item(trans
, root
, &btrfs_inode
, st
);
548 objectid
= self_objectid
;
550 if (S_ISDIR(st
->st_mode
)) {
551 inode_size
= calculate_dir_inode_size(name
);
552 btrfs_set_stack_inode_size(&btrfs_inode
, inode_size
);
555 inode_key
.objectid
= objectid
;
556 inode_key
.offset
= 0;
557 btrfs_set_key_type(&inode_key
, BTRFS_INODE_ITEM_KEY
);
559 ret
= btrfs_insert_inode(trans
, root
, objectid
, &btrfs_inode
);
561 *inode_ret
= btrfs_inode
;
565 static int add_xattr_item(struct btrfs_trans_handle
*trans
,
566 struct btrfs_root
*root
, u64 objectid
,
567 const char *file_name
)
571 char xattr_list
[XATTR_LIST_MAX
];
573 char cur_value
[XATTR_SIZE_MAX
];
574 char delimiter
= '\0';
575 char *next_location
= xattr_list
;
577 ret
= llistxattr(file_name
, xattr_list
, XATTR_LIST_MAX
);
581 error("getting a list of xattr failed for %s: %s", file_name
,
588 cur_name
= strtok(xattr_list
, &delimiter
);
589 while (cur_name
!= NULL
) {
590 cur_name_len
= strlen(cur_name
);
591 next_location
+= cur_name_len
+ 1;
593 ret
= getxattr(file_name
, cur_name
, cur_value
, XATTR_SIZE_MAX
);
597 error("gettig a xattr value failed for %s attr %s: %s",
598 file_name
, cur_name
, strerror(errno
));
602 ret
= btrfs_insert_xattr_item(trans
, root
, cur_name
,
603 cur_name_len
, cur_value
,
606 error("inserting a xattr item failed for %s: %s",
607 file_name
, strerror(-ret
));
610 cur_name
= strtok(next_location
, &delimiter
);
616 static int add_symbolic_link(struct btrfs_trans_handle
*trans
,
617 struct btrfs_root
*root
,
618 u64 objectid
, const char *path_name
)
623 ret
= readlink(path_name
, buf
, sizeof(buf
));
625 error("readlink failed for %s: %s", path_name
, strerror(errno
));
628 if (ret
>= sizeof(buf
)) {
629 error("symlink too long for %s", path_name
);
634 buf
[ret
] = '\0'; /* readlink does not do it for us */
635 ret
= btrfs_insert_inline_extent(trans
, root
, objectid
, 0,
641 static int add_file_items(struct btrfs_trans_handle
*trans
,
642 struct btrfs_root
*root
,
643 struct btrfs_inode_item
*btrfs_inode
, u64 objectid
,
644 ino_t parent_inum
, struct stat
*st
,
645 const char *path_name
, int out_fd
)
650 struct btrfs_key key
;
652 u32 sectorsize
= root
->sectorsize
;
657 struct extent_buffer
*eb
= NULL
;
660 if (st
->st_size
== 0)
663 fd
= open(path_name
, O_RDONLY
);
665 error("cannot open %s: %s", path_name
, strerror(errno
));
669 blocks
= st
->st_size
/ sectorsize
;
670 if (st
->st_size
% sectorsize
)
673 if (st
->st_size
<= BTRFS_MAX_INLINE_DATA_SIZE(root
)) {
674 char *buffer
= malloc(st
->st_size
);
681 ret_read
= pread64(fd
, buffer
, st
->st_size
, bytes_read
);
682 if (ret_read
== -1) {
683 error("cannot read %s at offset %llu length %llu: %s",
684 path_name
, (unsigned long long)bytes_read
,
685 (unsigned long long)st
->st_size
,
691 ret
= btrfs_insert_inline_extent(trans
, root
, objectid
, 0,
692 buffer
, st
->st_size
);
697 /* round up our st_size to the FS blocksize */
698 total_bytes
= (u64
)blocks
* sectorsize
;
701 * do our IO in extent buffers so it can work
702 * against any raid type
704 eb
= calloc(1, sizeof(*eb
) + sectorsize
);
713 * keep our extent size at 1MB max, this makes it easier to work inside
714 * the tiny block groups created during mkfs
716 cur_bytes
= min(total_bytes
, 1024ULL * 1024);
717 ret
= btrfs_reserve_extent(trans
, root
, cur_bytes
, 0, 0, (u64
)-1,
722 first_block
= key
.objectid
;
725 while (bytes_read
< cur_bytes
) {
727 memset(eb
->data
, 0, sectorsize
);
729 ret_read
= pread64(fd
, eb
->data
, sectorsize
, file_pos
+ bytes_read
);
730 if (ret_read
== -1) {
731 error("cannot read %s at offset %llu length %llu: %s",
733 (unsigned long long)file_pos
+ bytes_read
,
734 (unsigned long long)sectorsize
,
739 eb
->start
= first_block
+ bytes_read
;
740 eb
->len
= sectorsize
;
743 * we're doing the csum before we record the extent, but
746 ret
= btrfs_csum_file_block(trans
, root
->fs_info
->csum_root
,
747 first_block
+ bytes_read
+ sectorsize
,
748 first_block
+ bytes_read
,
749 eb
->data
, sectorsize
);
753 ret
= write_and_map_eb(trans
, root
, eb
);
755 error("failed to write %s", path_name
);
759 bytes_read
+= sectorsize
;
763 ret
= btrfs_record_file_extent(trans
, root
, objectid
, btrfs_inode
,
764 file_pos
, first_block
, cur_bytes
);
770 file_pos
+= cur_bytes
;
771 total_bytes
-= cur_bytes
;
782 static char *make_path(char *dir
, char *name
)
786 path
= malloc(strlen(dir
) + strlen(name
) + 2);
790 if (dir
[strlen(dir
) - 1] != '/')
796 static int traverse_directory(struct btrfs_trans_handle
*trans
,
797 struct btrfs_root
*root
, char *dir_name
,
798 struct directory_name_entry
*dir_head
, int out_fd
)
802 struct btrfs_inode_item cur_inode
;
803 struct btrfs_inode_item
*inode_item
;
804 int count
, i
, dir_index_cnt
;
805 struct direct
**files
;
807 struct directory_name_entry
*dir_entry
, *parent_dir_entry
;
808 struct direct
*cur_file
;
809 ino_t parent_inum
, cur_inum
;
810 ino_t highest_inum
= 0;
811 char *parent_dir_name
;
812 char real_path
[PATH_MAX
];
813 struct btrfs_path path
;
814 struct extent_buffer
*leaf
;
815 struct btrfs_key root_dir_key
;
816 u64 root_dir_inode_size
= 0;
818 /* Add list for source directory */
819 dir_entry
= malloc(sizeof(struct directory_name_entry
));
822 dir_entry
->dir_name
= dir_name
;
823 dir_entry
->path
= realpath(dir_name
, real_path
);
824 if (!dir_entry
->path
) {
825 error("realpath failed for %s: %s", dir_name
, strerror(errno
));
830 parent_inum
= highest_inum
+ BTRFS_FIRST_FREE_OBJECTID
;
831 dir_entry
->inum
= parent_inum
;
832 list_add_tail(&dir_entry
->list
, &dir_head
->list
);
834 btrfs_init_path(&path
);
836 root_dir_key
.objectid
= btrfs_root_dirid(&root
->root_item
);
837 root_dir_key
.offset
= 0;
838 btrfs_set_key_type(&root_dir_key
, BTRFS_INODE_ITEM_KEY
);
839 ret
= btrfs_lookup_inode(trans
, root
, &path
, &root_dir_key
, 1);
841 error("failed to lookup root dir: %d", ret
);
845 leaf
= path
.nodes
[0];
846 inode_item
= btrfs_item_ptr(leaf
, path
.slots
[0],
847 struct btrfs_inode_item
);
849 root_dir_inode_size
= calculate_dir_inode_size(dir_name
);
850 btrfs_set_inode_size(leaf
, inode_item
, root_dir_inode_size
);
851 btrfs_mark_buffer_dirty(leaf
);
853 btrfs_release_path(&path
);
856 parent_dir_entry
= list_entry(dir_head
->list
.next
,
857 struct directory_name_entry
,
859 list_del(&parent_dir_entry
->list
);
861 parent_inum
= parent_dir_entry
->inum
;
862 parent_dir_name
= parent_dir_entry
->dir_name
;
863 if (chdir(parent_dir_entry
->path
)) {
864 error("chdir failed for %s: %s",
865 parent_dir_name
, strerror(errno
));
870 count
= scandir(parent_dir_entry
->path
, &files
,
871 directory_select
, NULL
);
874 error("scandir failed for %s: %s",
875 parent_dir_name
, strerror (errno
));
880 for (i
= 0; i
< count
; i
++) {
883 if (lstat(cur_file
->d_name
, &st
) == -1) {
884 error("lstat failed for %s: %s",
885 cur_file
->d_name
, strerror(errno
));
890 cur_inum
= st
.st_ino
;
891 ret
= add_directory_items(trans
, root
,
892 cur_inum
, parent_inum
,
894 &st
, &dir_index_cnt
);
896 error("unable to add directory items for %s: %d",
897 cur_file
->d_name
, ret
);
901 ret
= add_inode_items(trans
, root
, &st
,
902 cur_file
->d_name
, cur_inum
,
903 parent_inum
, dir_index_cnt
,
905 if (ret
== -EEXIST
) {
906 if (st
.st_nlink
<= 1) {
908 "item %s already exists but has wrong st_nlink %ld <= 1",
909 cur_file
->d_name
, st
.st_nlink
);
915 error("unable to add inode items for %s: %d",
916 cur_file
->d_name
, ret
);
920 ret
= add_xattr_item(trans
, root
,
921 cur_inum
, cur_file
->d_name
);
923 error("unable to add xattr items for %s: %d",
924 cur_file
->d_name
, ret
);
929 if (S_ISDIR(st
.st_mode
)) {
930 dir_entry
= malloc(sizeof(struct directory_name_entry
));
935 dir_entry
->dir_name
= cur_file
->d_name
;
936 dir_entry
->path
= make_path(parent_dir_entry
->path
,
938 dir_entry
->inum
= cur_inum
;
939 list_add_tail(&dir_entry
->list
, &dir_head
->list
);
940 } else if (S_ISREG(st
.st_mode
)) {
941 ret
= add_file_items(trans
, root
, &cur_inode
,
942 cur_inum
, parent_inum
, &st
,
943 cur_file
->d_name
, out_fd
);
945 error("unable to add file items for %s: %d",
946 cur_file
->d_name
, ret
);
949 } else if (S_ISLNK(st
.st_mode
)) {
950 ret
= add_symbolic_link(trans
, root
,
951 cur_inum
, cur_file
->d_name
);
953 error("unable to add symlink for %s: %d",
954 cur_file
->d_name
, ret
);
960 free_namelist(files
, count
);
961 free(parent_dir_entry
);
965 } while (!list_empty(&dir_head
->list
));
970 free_namelist(files
, count
);
972 free(parent_dir_entry
);
979 static int open_target(char *output_name
)
982 output_fd
= open(output_name
, O_CREAT
| O_RDWR
,
983 S_IRUSR
| S_IWUSR
| S_IRGRP
| S_IWGRP
| S_IROTH
);
988 static int create_chunks(struct btrfs_trans_handle
*trans
,
989 struct btrfs_root
*root
, u64 num_of_meta_chunks
,
991 struct mkfs_allocation
*allocation
)
995 u64 meta_type
= BTRFS_BLOCK_GROUP_METADATA
;
996 u64 data_type
= BTRFS_BLOCK_GROUP_DATA
;
997 u64 minimum_data_chunk_size
= 8 * 1024 * 1024;
1001 for (i
= 0; i
< num_of_meta_chunks
; i
++) {
1002 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
1003 &chunk_start
, &chunk_size
, meta_type
);
1006 ret
= btrfs_make_block_group(trans
, root
->fs_info
->extent_root
, 0,
1007 meta_type
, BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
1008 chunk_start
, chunk_size
);
1009 allocation
->metadata
+= chunk_size
;
1012 set_extent_dirty(&root
->fs_info
->free_space_cache
,
1013 chunk_start
, chunk_start
+ chunk_size
- 1, 0);
1016 if (size_of_data
< minimum_data_chunk_size
)
1017 size_of_data
= minimum_data_chunk_size
;
1019 ret
= btrfs_alloc_data_chunk(trans
, root
->fs_info
->extent_root
,
1020 &chunk_start
, size_of_data
, data_type
, 0);
1023 ret
= btrfs_make_block_group(trans
, root
->fs_info
->extent_root
, 0,
1024 data_type
, BTRFS_FIRST_CHUNK_TREE_OBJECTID
,
1025 chunk_start
, size_of_data
);
1026 allocation
->data
+= size_of_data
;
1029 set_extent_dirty(&root
->fs_info
->free_space_cache
,
1030 chunk_start
, chunk_start
+ size_of_data
- 1, 0);
1034 static int make_image(char *source_dir
, struct btrfs_root
*root
, int out_fd
)
1037 struct btrfs_trans_handle
*trans
;
1038 struct stat root_st
;
1039 struct directory_name_entry dir_head
;
1040 struct directory_name_entry
*dir_entry
= NULL
;
1042 ret
= lstat(source_dir
, &root_st
);
1044 error("unable to lstat %s: %s", source_dir
, strerror(errno
));
1049 INIT_LIST_HEAD(&dir_head
.list
);
1051 trans
= btrfs_start_transaction(root
, 1);
1052 ret
= traverse_directory(trans
, root
, source_dir
, &dir_head
, out_fd
);
1054 error("unable to traverse directory %s: %d", source_dir
, ret
);
1057 ret
= btrfs_commit_transaction(trans
, root
);
1059 error("transaction commit failed: %d", ret
);
1064 printf("Making image is completed.\n");
1067 while (!list_empty(&dir_head
.list
)) {
1068 dir_entry
= list_entry(dir_head
.list
.next
,
1069 struct directory_name_entry
, list
);
1070 list_del(&dir_entry
->list
);
1078 * This ignores symlinks with unreadable targets and subdirs that can't
1079 * be read. It's a best-effort to give a rough estimate of the size of
1080 * a subdir. It doesn't guarantee that prepopulating btrfs from this
1081 * tree won't still run out of space.
1083 static u64 global_total_size
;
1084 static u64 fs_block_size
;
1085 static int ftw_add_entry_size(const char *fpath
, const struct stat
*st
,
1088 if (type
== FTW_F
|| type
== FTW_D
)
1089 global_total_size
+= round_up(st
->st_size
, fs_block_size
);
1094 static u64
size_sourcedir(char *dir_name
, u64 sectorsize
,
1095 u64
*num_of_meta_chunks_ret
, u64
*size_of_data_ret
)
1100 u64 default_chunk_size
= 8 * 1024 * 1024; /* 8MB */
1101 u64 allocated_meta_size
= 8 * 1024 * 1024; /* 8MB */
1102 u64 allocated_total_size
= 20 * 1024 * 1024; /* 20MB */
1103 u64 num_of_meta_chunks
= 0;
1104 u64 num_of_data_chunks
= 0;
1105 u64 num_of_allocated_meta_chunks
=
1106 allocated_meta_size
/ default_chunk_size
;
1108 global_total_size
= 0;
1109 fs_block_size
= sectorsize
;
1110 ret
= ftw(dir_name
, ftw_add_entry_size
, 10);
1111 dir_size
= global_total_size
;
1113 error("ftw subdir walk of %s failed: %s", dir_name
,
1118 num_of_data_chunks
= (dir_size
+ default_chunk_size
- 1) /
1121 num_of_meta_chunks
= (dir_size
/ 2) / default_chunk_size
;
1122 if (((dir_size
/ 2) % default_chunk_size
) != 0)
1123 num_of_meta_chunks
++;
1124 if (num_of_meta_chunks
<= num_of_allocated_meta_chunks
)
1125 num_of_meta_chunks
= 0;
1127 num_of_meta_chunks
-= num_of_allocated_meta_chunks
;
1129 total_size
= allocated_total_size
+
1130 (num_of_data_chunks
* default_chunk_size
) +
1131 (num_of_meta_chunks
* default_chunk_size
);
1133 *num_of_meta_chunks_ret
= num_of_meta_chunks
;
1134 *size_of_data_ret
= num_of_data_chunks
* default_chunk_size
;
1138 static int zero_output_file(int out_fd
, u64 size
)
1146 memset(buf
, 0, 4096);
1147 loop_num
= size
/ 4096;
1148 for (i
= 0; i
< loop_num
; i
++) {
1149 written
= pwrite64(out_fd
, buf
, 4096, location
);
1150 if (written
!= 4096)
1157 static int is_ssd(const char *file
)
1160 char wholedisk
[PATH_MAX
];
1161 char sysfs_path
[PATH_MAX
];
1167 probe
= blkid_new_probe_from_filename(file
);
1171 /* Device number of this disk (possibly a partition) */
1172 devno
= blkid_probe_get_devno(probe
);
1174 blkid_free_probe(probe
);
1178 /* Get whole disk name (not full path) for this devno */
1179 ret
= blkid_devno_to_wholedisk(devno
,
1180 wholedisk
, sizeof(wholedisk
), NULL
);
1182 blkid_free_probe(probe
);
1186 snprintf(sysfs_path
, PATH_MAX
, "/sys/block/%s/queue/rotational",
1189 blkid_free_probe(probe
);
1191 fd
= open(sysfs_path
, O_RDONLY
);
1196 if (read(fd
, &rotational
, 1) < 1) {
1202 return rotational
== '0';
1205 static int _cmp_device_by_id(void *priv
, struct list_head
*a
,
1206 struct list_head
*b
)
1208 return list_entry(a
, struct btrfs_device
, dev_list
)->devid
-
1209 list_entry(b
, struct btrfs_device
, dev_list
)->devid
;
1212 static void list_all_devices(struct btrfs_root
*root
)
1214 struct btrfs_fs_devices
*fs_devices
;
1215 struct btrfs_device
*device
;
1216 int number_of_devices
= 0;
1217 u64 total_block_count
= 0;
1219 fs_devices
= root
->fs_info
->fs_devices
;
1221 list_for_each_entry(device
, &fs_devices
->devices
, dev_list
)
1222 number_of_devices
++;
1224 list_sort(NULL
, &fs_devices
->devices
, _cmp_device_by_id
);
1226 printf("Number of devices: %d\n", number_of_devices
);
1227 /* printf("Total devices size: %10s\n", */
1228 /* pretty_size(total_block_count)); */
1229 printf("Devices:\n");
1230 printf(" ID SIZE PATH\n");
1231 list_for_each_entry(device
, &fs_devices
->devices
, dev_list
) {
1232 printf(" %3llu %10s %s\n",
1234 pretty_size(device
->total_bytes
),
1236 total_block_count
+= device
->total_bytes
;
1242 static int is_temp_block_group(struct extent_buffer
*node
,
1243 struct btrfs_block_group_item
*bgi
,
1244 u64 data_profile
, u64 meta_profile
,
1247 u64 flag
= btrfs_disk_block_group_flags(node
, bgi
);
1248 u64 flag_type
= flag
& BTRFS_BLOCK_GROUP_TYPE_MASK
;
1249 u64 flag_profile
= flag
& BTRFS_BLOCK_GROUP_PROFILE_MASK
;
1250 u64 used
= btrfs_disk_block_group_used(node
, bgi
);
1253 * Chunks meets all the following conditions is a temp chunk
1255 * Temp chunk is always empty.
1257 * 2) profile mismatch with mkfs profile.
1258 * Temp chunk is always in SINGLE
1260 * 3) Size differs with mkfs_alloc
1261 * Special case for SINGLE/SINGLE btrfs.
1262 * In that case, temp data chunk and real data chunk are always empty.
1263 * So we need to use mkfs_alloc to be sure which chunk is the newly
1266 * Normally, new chunk size is equal to mkfs one (One chunk)
1267 * If it has multiple chunks, we just refuse to delete any one.
1268 * As they are all single, so no real problem will happen.
1269 * So only use condition 1) and 2) to judge them.
1273 switch (flag_type
) {
1274 case BTRFS_BLOCK_GROUP_DATA
:
1275 case BTRFS_BLOCK_GROUP_DATA
| BTRFS_BLOCK_GROUP_METADATA
:
1276 data_profile
&= BTRFS_BLOCK_GROUP_PROFILE_MASK
;
1277 if (flag_profile
!= data_profile
)
1280 case BTRFS_BLOCK_GROUP_METADATA
:
1281 meta_profile
&= BTRFS_BLOCK_GROUP_PROFILE_MASK
;
1282 if (flag_profile
!= meta_profile
)
1285 case BTRFS_BLOCK_GROUP_SYSTEM
:
1286 sys_profile
&= BTRFS_BLOCK_GROUP_PROFILE_MASK
;
1287 if (flag_profile
!= sys_profile
)
1294 /* Note: if current is a block group, it will skip it anyway */
1295 static int next_block_group(struct btrfs_root
*root
,
1296 struct btrfs_path
*path
)
1298 struct btrfs_key key
;
1302 ret
= btrfs_next_item(root
, path
);
1306 btrfs_item_key_to_cpu(path
->nodes
[0], &key
, path
->slots
[0]);
1307 if (key
.type
== BTRFS_BLOCK_GROUP_ITEM_KEY
)
1314 /* This function will cleanup */
1315 static int cleanup_temp_chunks(struct btrfs_fs_info
*fs_info
,
1316 struct mkfs_allocation
*alloc
,
1317 u64 data_profile
, u64 meta_profile
,
1320 struct btrfs_trans_handle
*trans
= NULL
;
1321 struct btrfs_block_group_item
*bgi
;
1322 struct btrfs_root
*root
= fs_info
->extent_root
;
1323 struct btrfs_key key
;
1324 struct btrfs_key found_key
;
1325 struct btrfs_path
*path
;
1328 path
= btrfs_alloc_path();
1334 trans
= btrfs_start_transaction(root
, 1);
1337 key
.type
= BTRFS_BLOCK_GROUP_ITEM_KEY
;
1342 * as the rest of the loop may modify the tree, we need to
1343 * start a new search each time.
1345 ret
= btrfs_search_slot(trans
, root
, &key
, path
, 0, 0);
1349 btrfs_item_key_to_cpu(path
->nodes
[0], &found_key
,
1351 if (found_key
.objectid
< key
.objectid
)
1353 if (found_key
.type
!= BTRFS_BLOCK_GROUP_ITEM_KEY
) {
1354 ret
= next_block_group(root
, path
);
1361 btrfs_item_key_to_cpu(path
->nodes
[0], &found_key
,
1365 bgi
= btrfs_item_ptr(path
->nodes
[0], path
->slots
[0],
1366 struct btrfs_block_group_item
);
1367 if (is_temp_block_group(path
->nodes
[0], bgi
,
1368 data_profile
, meta_profile
,
1370 u64 flags
= btrfs_disk_block_group_flags(path
->nodes
[0],
1373 ret
= btrfs_free_block_group(trans
, fs_info
,
1374 found_key
.objectid
, found_key
.offset
);
1378 if ((flags
& BTRFS_BLOCK_GROUP_TYPE_MASK
) ==
1379 BTRFS_BLOCK_GROUP_DATA
)
1380 alloc
->data
-= found_key
.offset
;
1381 else if ((flags
& BTRFS_BLOCK_GROUP_TYPE_MASK
) ==
1382 BTRFS_BLOCK_GROUP_METADATA
)
1383 alloc
->metadata
-= found_key
.offset
;
1384 else if ((flags
& BTRFS_BLOCK_GROUP_TYPE_MASK
) ==
1385 BTRFS_BLOCK_GROUP_SYSTEM
)
1386 alloc
->system
-= found_key
.offset
;
1387 else if ((flags
& BTRFS_BLOCK_GROUP_TYPE_MASK
) ==
1388 (BTRFS_BLOCK_GROUP_METADATA
|
1389 BTRFS_BLOCK_GROUP_DATA
))
1390 alloc
->mixed
-= found_key
.offset
;
1392 btrfs_release_path(path
);
1393 key
.objectid
= found_key
.objectid
+ found_key
.offset
;
1397 btrfs_commit_transaction(trans
, root
);
1398 btrfs_free_path(path
);
1402 int main(int argc
, char **argv
)
1405 struct btrfs_root
*root
;
1406 struct btrfs_fs_info
*fs_info
;
1407 struct btrfs_trans_handle
*trans
;
1409 u64 block_count
= 0;
1410 u64 dev_block_count
= 0;
1412 u64 alloc_start
= 0;
1413 u64 metadata_profile
= 0;
1414 u64 data_profile
= 0;
1415 u32 nodesize
= max_t(u32
, sysconf(_SC_PAGESIZE
),
1416 BTRFS_MKFS_DEFAULT_NODE_SIZE
);
1417 u32 sectorsize
= 4096;
1418 u32 stripesize
= 4096;
1424 int nodesize_forced
= 0;
1425 int data_profile_opt
= 0;
1426 int metadata_profile_opt
= 0;
1429 int force_overwrite
= 0;
1430 char *source_dir
= NULL
;
1431 int source_dir_set
= 0;
1432 u64 num_of_meta_chunks
= 0;
1433 u64 size_of_data
= 0;
1434 u64 source_dir_size
= 0;
1437 char fs_uuid
[BTRFS_UUID_UNPARSED_SIZE
] = { 0 };
1438 u64 features
= BTRFS_MKFS_DEFAULT_FEATURES
;
1439 struct mkfs_allocation allocation
= { 0 };
1440 struct btrfs_mkfs_config mkfs_cfg
;
1444 static const struct option long_options
[] = {
1445 { "alloc-start", required_argument
, NULL
, 'A'},
1446 { "byte-count", required_argument
, NULL
, 'b' },
1447 { "force", no_argument
, NULL
, 'f' },
1448 { "leafsize", required_argument
, NULL
, 'l' },
1449 { "label", required_argument
, NULL
, 'L'},
1450 { "metadata", required_argument
, NULL
, 'm' },
1451 { "mixed", no_argument
, NULL
, 'M' },
1452 { "nodesize", required_argument
, NULL
, 'n' },
1453 { "sectorsize", required_argument
, NULL
, 's' },
1454 { "data", required_argument
, NULL
, 'd' },
1455 { "version", no_argument
, NULL
, 'V' },
1456 { "rootdir", required_argument
, NULL
, 'r' },
1457 { "nodiscard", no_argument
, NULL
, 'K' },
1458 { "features", required_argument
, NULL
, 'O' },
1459 { "uuid", required_argument
, NULL
, 'U' },
1460 { "quiet", 0, NULL
, 'q' },
1461 { "help", no_argument
, NULL
, GETOPT_VAL_HELP
},
1465 c
= getopt_long(argc
, argv
, "A:b:fl:n:s:m:d:L:O:r:U:VMKq",
1466 long_options
, NULL
);
1471 alloc_start
= parse_size(optarg
);
1474 force_overwrite
= 1;
1477 data_profile
= parse_profile(optarg
);
1478 data_profile_opt
= 1;
1481 warning("--leafsize is deprecated, use --nodesize");
1483 nodesize
= parse_size(optarg
);
1484 nodesize_forced
= 1;
1487 label
= parse_label(optarg
);
1490 metadata_profile
= parse_profile(optarg
);
1491 metadata_profile_opt
= 1;
1497 char *orig
= strdup(optarg
);
1500 tmp
= btrfs_parse_fs_features(tmp
, &features
);
1502 error("unrecognized filesystem feature '%s'",
1508 if (features
& BTRFS_FEATURE_LIST_ALL
) {
1509 btrfs_list_all_fs_features(0);
1515 sectorsize
= parse_size(optarg
);
1518 block_count
= parse_size(optarg
);
1522 printf("mkfs.btrfs, part of %s\n",
1527 source_dir
= optarg
;
1531 strncpy(fs_uuid
, optarg
,
1532 BTRFS_UUID_UNPARSED_SIZE
- 1);
1540 case GETOPT_VAL_HELP
:
1542 print_usage(c
!= GETOPT_VAL_HELP
);
1547 printf("%s\n", PACKAGE_STRING
);
1548 printf("See %s for more information.\n\n", PACKAGE_URL
);
1551 sectorsize
= max(sectorsize
, (u32
)sysconf(_SC_PAGESIZE
));
1552 stripesize
= sectorsize
;
1553 saved_optind
= optind
;
1554 dev_cnt
= argc
- optind
;
1558 if (source_dir_set
&& dev_cnt
> 1) {
1559 error("the option -r is limited to a single device");
1566 if (uuid_parse(fs_uuid
, dummy_uuid
) != 0) {
1567 error("could not parse UUID: %s", fs_uuid
);
1570 if (!test_uuid_unique(fs_uuid
)) {
1571 error("non-unique UUID: %s", fs_uuid
);
1576 while (dev_cnt
-- > 0) {
1577 file
= argv
[optind
++];
1578 if (is_block_device(file
) == 1)
1579 if (test_dev_for_mkfs(file
, force_overwrite
))
1583 optind
= saved_optind
;
1584 dev_cnt
= argc
- optind
;
1586 file
= argv
[optind
++];
1590 * Set default profiles according to number of added devices.
1591 * For mixed groups defaults are single/single.
1594 if (!metadata_profile_opt
) {
1595 if (dev_cnt
== 1 && ssd
&& verbose
)
1596 printf("Detected a SSD, turning off metadata "
1597 "duplication. Mkfs with -m dup if you want to "
1598 "force metadata duplication.\n");
1600 metadata_profile
= (dev_cnt
> 1) ?
1601 BTRFS_BLOCK_GROUP_RAID1
: (ssd
) ?
1602 0: BTRFS_BLOCK_GROUP_DUP
;
1604 if (!data_profile_opt
) {
1605 data_profile
= (dev_cnt
> 1) ?
1606 BTRFS_BLOCK_GROUP_RAID0
: 0; /* raid0 or single */
1609 u32 best_nodesize
= max_t(u32
, sysconf(_SC_PAGESIZE
), sectorsize
);
1611 if (metadata_profile_opt
|| data_profile_opt
) {
1612 if (metadata_profile
!= data_profile
) {
1614 "with mixed block groups data and metadata profiles must be the same");
1619 if (!nodesize_forced
)
1620 nodesize
= best_nodesize
;
1624 * FS features that can be set by other means than -O
1625 * just set the bit here
1628 features
|= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS
;
1630 if ((data_profile
| metadata_profile
) &
1631 (BTRFS_BLOCK_GROUP_RAID5
| BTRFS_BLOCK_GROUP_RAID6
)) {
1632 features
|= BTRFS_FEATURE_INCOMPAT_RAID56
;
1635 if (btrfs_check_nodesize(nodesize
, sectorsize
,
1639 /* Check device/block_count after the nodesize is determined */
1640 if (block_count
&& block_count
< btrfs_min_dev_size(nodesize
)) {
1641 error("size %llu is too small to make a usable filesystem",
1643 error("minimum size for btrfs filesystem is %llu",
1644 btrfs_min_dev_size(nodesize
));
1647 for (i
= saved_optind
; i
< saved_optind
+ dev_cnt
; i
++) {
1651 ret
= test_minimum_size(path
, nodesize
);
1653 error("failed to check size for %s: %s",
1654 path
, strerror(-ret
));
1658 error("'%s' is too small to make a usable filesystem",
1660 error("minimum size for each btrfs device is %llu",
1661 btrfs_min_dev_size(nodesize
));
1665 ret
= test_num_disk_vs_raid(metadata_profile
, data_profile
,
1666 dev_cnt
, mixed
, ssd
);
1672 if (!source_dir_set
) {
1674 * open without O_EXCL so that the problem should not
1675 * occur by the following processing.
1676 * (btrfs_register_one_device() fails if O_EXCL is on)
1678 fd
= open(file
, O_RDWR
);
1680 error("unable to open %s: %s", file
, strerror(errno
));
1683 ret
= btrfs_prepare_device(fd
, file
, &dev_block_count
,
1685 (zero_end
? PREP_DEVICE_ZERO_END
: 0) |
1686 (discard
? PREP_DEVICE_DISCARD
: 0) |
1687 (verbose
? PREP_DEVICE_VERBOSE
: 0));
1692 if (block_count
&& block_count
> dev_block_count
) {
1693 error("%s is smaller than requested size, expected %llu, found %llu",
1695 (unsigned long long)block_count
,
1696 (unsigned long long)dev_block_count
);
1700 fd
= open_target(file
);
1702 error("unable to open %s: %s", file
, strerror(errno
));
1706 source_dir_size
= size_sourcedir(source_dir
, sectorsize
,
1707 &num_of_meta_chunks
, &size_of_data
);
1708 if(block_count
< source_dir_size
)
1709 block_count
= source_dir_size
;
1710 ret
= zero_output_file(fd
, block_count
);
1712 error("unable to zero the output file");
1715 /* our "device" is the new image file */
1716 dev_block_count
= block_count
;
1719 /* To create the first block group and chunk 0 in make_btrfs */
1720 if (dev_block_count
< BTRFS_MKFS_SYSTEM_GROUP_SIZE
) {
1721 error("device is too small to make filesystem, must be at least %llu",
1722 (unsigned long long)BTRFS_MKFS_SYSTEM_GROUP_SIZE
);
1726 blocks
[0] = BTRFS_SUPER_INFO_OFFSET
;
1727 for (i
= 1; i
< 7; i
++) {
1728 blocks
[i
] = BTRFS_SUPER_INFO_OFFSET
+ 1024 * 1024 +
1732 if (group_profile_max_safe_loss(metadata_profile
) <
1733 group_profile_max_safe_loss(data_profile
)){
1734 warning("metadata has lower redundancy than data!\n");
1737 mkfs_cfg
.label
= label
;
1738 memcpy(mkfs_cfg
.fs_uuid
, fs_uuid
, sizeof(mkfs_cfg
.fs_uuid
));
1739 memcpy(mkfs_cfg
.blocks
, blocks
, sizeof(blocks
));
1740 mkfs_cfg
.num_bytes
= dev_block_count
;
1741 mkfs_cfg
.nodesize
= nodesize
;
1742 mkfs_cfg
.sectorsize
= sectorsize
;
1743 mkfs_cfg
.stripesize
= stripesize
;
1744 mkfs_cfg
.features
= features
;
1746 ret
= make_btrfs(fd
, &mkfs_cfg
, NULL
);
1748 error("error during mkfs: %s", strerror(-ret
));
1752 fs_info
= open_ctree_fs_info(file
, 0, 0, 0,
1753 OPEN_CTREE_WRITES
| OPEN_CTREE_FS_PARTIAL
);
1755 error("open ctree failed");
1759 root
= fs_info
->fs_root
;
1760 fs_info
->alloc_start
= alloc_start
;
1762 ret
= create_metadata_block_groups(root
, mixed
, &allocation
);
1764 error("failed to create default block groups: %d", ret
);
1768 trans
= btrfs_start_transaction(root
, 1);
1770 error("failed to start transaction");
1774 ret
= create_data_block_groups(trans
, root
, mixed
, &allocation
);
1776 error("failed to create default data block groups: %d", ret
);
1780 ret
= make_root_dir(trans
, root
, &allocation
);
1782 error("failed to setup the root directory: %d", ret
);
1786 ret
= btrfs_commit_transaction(trans
, root
);
1788 error("unable to commit transaction: %d", ret
);
1792 trans
= btrfs_start_transaction(root
, 1);
1794 error("failed to start transaction");
1801 while (dev_cnt
-- > 0) {
1802 file
= argv
[optind
++];
1805 * open without O_EXCL so that the problem should not
1806 * occur by the following processing.
1807 * (btrfs_register_one_device() fails if O_EXCL is on)
1809 fd
= open(file
, O_RDWR
);
1811 error("unable to open %s: %s", file
, strerror(errno
));
1814 ret
= btrfs_device_already_in_root(root
, fd
,
1815 BTRFS_SUPER_INFO_OFFSET
);
1817 error("skipping duplicate device %s in the filesystem",
1822 ret
= btrfs_prepare_device(fd
, file
, &dev_block_count
,
1824 (verbose
? PREP_DEVICE_VERBOSE
: 0) |
1825 (zero_end
? PREP_DEVICE_ZERO_END
: 0) |
1826 (discard
? PREP_DEVICE_DISCARD
: 0));
1832 ret
= btrfs_add_to_fsid(trans
, root
, fd
, file
, dev_block_count
,
1833 sectorsize
, sectorsize
, sectorsize
);
1835 error("unable to add %s to filesystem: %d", file
, ret
);
1839 struct btrfs_device
*device
;
1841 device
= container_of(fs_info
->fs_devices
->devices
.next
,
1842 struct btrfs_device
, dev_list
);
1843 printf("adding device %s id %llu\n", file
,
1844 (unsigned long long)device
->devid
);
1849 if (!source_dir_set
) {
1850 ret
= create_raid_groups(trans
, root
, data_profile
,
1851 metadata_profile
, mixed
, &allocation
);
1853 error("unable to create raid groups: %d", ret
);
1858 ret
= create_data_reloc_tree(trans
, root
);
1860 error("unable to create data reloc tree: %d", ret
);
1864 ret
= btrfs_commit_transaction(trans
, root
);
1866 error("unable to commit transaction: %d", ret
);
1870 if (source_dir_set
) {
1871 trans
= btrfs_start_transaction(root
, 1);
1872 ret
= create_chunks(trans
, root
,
1873 num_of_meta_chunks
, size_of_data
,
1876 error("unable to create chunks: %d", ret
);
1879 ret
= btrfs_commit_transaction(trans
, root
);
1881 error("transaction commit failed: %d", ret
);
1885 ret
= make_image(source_dir
, root
, fd
);
1887 error("error wihle filling filesystem: %d", ret
);
1891 ret
= cleanup_temp_chunks(fs_info
, &allocation
, data_profile
,
1892 metadata_profile
, metadata_profile
);
1894 error("failed to cleanup temporary chunks: %d", ret
);
1899 char features_buf
[64];
1901 printf("Label: %s\n", label
);
1902 printf("UUID: %s\n", fs_uuid
);
1903 printf("Node size: %u\n", nodesize
);
1904 printf("Sector size: %u\n", sectorsize
);
1905 printf("Filesystem size: %s\n",
1906 pretty_size(btrfs_super_total_bytes(fs_info
->super_copy
)));
1907 printf("Block group profiles:\n");
1908 if (allocation
.data
)
1909 printf(" Data: %-8s %16s\n",
1910 btrfs_group_profile_str(data_profile
),
1911 pretty_size(allocation
.data
));
1912 if (allocation
.metadata
)
1913 printf(" Metadata: %-8s %16s\n",
1914 btrfs_group_profile_str(metadata_profile
),
1915 pretty_size(allocation
.metadata
));
1916 if (allocation
.mixed
)
1917 printf(" Data+Metadata: %-8s %16s\n",
1918 btrfs_group_profile_str(data_profile
),
1919 pretty_size(allocation
.mixed
));
1920 printf(" System: %-8s %16s\n",
1921 btrfs_group_profile_str(metadata_profile
),
1922 pretty_size(allocation
.system
));
1923 printf("SSD detected: %s\n", ssd
? "yes" : "no");
1924 btrfs_parse_features_to_string(features_buf
, features
);
1925 printf("Incompat features: %s", features_buf
);
1928 list_all_devices(root
);
1932 * The filesystem is now fully set up, commit the remaining changes and
1933 * fix the signature as the last step before closing the devices.
1935 fs_info
->finalize_on_close
= 1;
1937 ret
= close_ctree(root
);
1940 optind
= saved_optind
;
1941 dev_cnt
= argc
- optind
;
1942 while (dev_cnt
-- > 0) {
1943 file
= argv
[optind
++];
1944 if (is_block_device(file
) == 1)
1945 btrfs_register_one_device(file
);
1949 btrfs_close_all_devices();