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 #define _XOPEN_SOURCE 500
23 #include <sys/types.h>
28 #include <uuid/uuid.h>
31 #include "kerncompat.h"
35 #include "transaction.h"
38 static u64
parse_size(char *s
)
44 if (!isdigit(s
[len
- 1])) {
45 c
= tolower(s
[len
- 1]);
56 fprintf(stderr
, "Unknown size descriptor %c\n", c
);
61 return atol(s
) * mult
;
64 static int make_root_dir(int fd
, const char *device_name
) {
65 struct btrfs_root
*root
;
66 struct btrfs_trans_handle
*trans
;
67 struct btrfs_key location
;
73 root
= open_ctree_fd(fd
, device_name
, 0);
76 fprintf(stderr
, "ctree init failed\n");
79 trans
= btrfs_start_transaction(root
, 1);
80 bytes_used
= btrfs_super_bytes_used(&root
->fs_info
->super_copy
);
82 root
->fs_info
->force_system_allocs
= 1;
83 ret
= btrfs_make_block_group(trans
, root
, bytes_used
,
84 BTRFS_BLOCK_GROUP_SYSTEM
,
85 BTRFS_CHUNK_TREE_OBJECTID
,
86 0, BTRFS_MKFS_SYSTEM_GROUP_SIZE
);
88 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
89 &chunk_start
, &chunk_size
,
90 BTRFS_BLOCK_GROUP_METADATA
);
92 ret
= btrfs_make_block_group(trans
, root
, 0,
93 BTRFS_BLOCK_GROUP_METADATA
,
94 BTRFS_CHUNK_TREE_OBJECTID
,
95 chunk_start
, chunk_size
);
98 root
->fs_info
->force_system_allocs
= 0;
99 btrfs_commit_transaction(trans
, root
);
100 trans
= btrfs_start_transaction(root
, 1);
103 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
104 &chunk_start
, &chunk_size
,
105 BTRFS_BLOCK_GROUP_DATA
);
107 ret
= btrfs_make_block_group(trans
, root
, 0,
108 BTRFS_BLOCK_GROUP_DATA
,
109 BTRFS_CHUNK_TREE_OBJECTID
,
110 chunk_start
, chunk_size
);
113 // ret = btrfs_make_block_group(trans, root, 0, 1);
114 ret
= btrfs_make_root_dir(trans
, root
->fs_info
->tree_root
,
115 BTRFS_ROOT_TREE_DIR_OBJECTID
);
118 ret
= btrfs_make_root_dir(trans
, root
, BTRFS_FIRST_FREE_OBJECTID
);
121 memcpy(&location
, &root
->fs_info
->fs_root
->root_key
, sizeof(location
));
122 location
.offset
= (u64
)-1;
123 ret
= btrfs_insert_dir_item(trans
, root
->fs_info
->tree_root
,
125 btrfs_super_root_dir(&root
->fs_info
->super_copy
),
126 &location
, BTRFS_FT_DIR
);
130 ret
= btrfs_insert_inode_ref(trans
, root
->fs_info
->tree_root
,
131 "default", 7, location
.objectid
,
132 BTRFS_ROOT_TREE_DIR_OBJECTID
);
136 btrfs_commit_transaction(trans
, root
);
137 ret
= close_ctree(root
);
142 static int recow_roots(struct btrfs_trans_handle
*trans
,
143 struct btrfs_root
*root
)
146 struct extent_buffer
*tmp
;
147 struct btrfs_fs_info
*info
= root
->fs_info
;
149 ret
= __btrfs_cow_block(trans
, info
->fs_root
, info
->fs_root
->node
,
150 NULL
, 0, &tmp
, 0, 0);
152 free_extent_buffer(tmp
);
154 ret
= __btrfs_cow_block(trans
, info
->tree_root
, info
->tree_root
->node
,
155 NULL
, 0, &tmp
, 0, 0);
157 free_extent_buffer(tmp
);
159 ret
= __btrfs_cow_block(trans
, info
->extent_root
,
160 info
->extent_root
->node
, NULL
, 0, &tmp
, 0, 0);
162 free_extent_buffer(tmp
);
164 ret
= __btrfs_cow_block(trans
, info
->chunk_root
, info
->chunk_root
->node
,
165 NULL
, 0, &tmp
, 0, 0);
167 free_extent_buffer(tmp
);
170 ret
= __btrfs_cow_block(trans
, info
->dev_root
, info
->dev_root
->node
,
171 NULL
, 0, &tmp
, 0, 0);
173 free_extent_buffer(tmp
);
178 static int create_one_raid_group(struct btrfs_trans_handle
*trans
,
179 struct btrfs_root
*root
, u64 type
)
185 ret
= btrfs_alloc_chunk(trans
, root
->fs_info
->extent_root
,
186 &chunk_start
, &chunk_size
, type
);
188 ret
= btrfs_make_block_group(trans
, root
->fs_info
->extent_root
, 0,
189 type
, BTRFS_CHUNK_TREE_OBJECTID
,
190 chunk_start
, chunk_size
);
195 static int create_raid_groups(struct btrfs_trans_handle
*trans
,
196 struct btrfs_root
*root
, u64 data_profile
,
197 u64 metadata_profile
)
199 u64 num_devices
= btrfs_super_num_devices(&root
->fs_info
->super_copy
);
203 if (num_devices
== 1)
204 allowed
= BTRFS_BLOCK_GROUP_DUP
;
206 allowed
= BTRFS_BLOCK_GROUP_RAID0
| BTRFS_BLOCK_GROUP_RAID1
;
208 if (allowed
& metadata_profile
) {
209 ret
= create_one_raid_group(trans
, root
,
210 BTRFS_BLOCK_GROUP_SYSTEM
|
211 (allowed
& metadata_profile
));
214 ret
= create_one_raid_group(trans
, root
,
215 BTRFS_BLOCK_GROUP_METADATA
|
216 (allowed
& metadata_profile
));
219 ret
= recow_roots(trans
, root
);
222 if (num_devices
> 1 && (allowed
& data_profile
)) {
223 ret
= create_one_raid_group(trans
, root
,
224 BTRFS_BLOCK_GROUP_DATA
|
225 (allowed
& data_profile
));
231 static void print_usage(void)
233 fprintf(stderr
, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
234 fprintf(stderr
, "options:\n");
235 fprintf(stderr
, "\t -b --byte-count total number of bytes in the FS\n");
236 fprintf(stderr
, "\t -l --leafsize size of btree leaves\n");
237 fprintf(stderr
, "\t -n --nodesize size of btree leaves\n");
238 fprintf(stderr
, "\t -s --sectorsize min block allocation\n");
242 static u64
parse_profile(char *s
)
244 if (strcmp(s
, "raid0") == 0) {
245 return BTRFS_BLOCK_GROUP_RAID0
;
246 } else if (strcmp(s
, "raid1") == 0) {
247 return BTRFS_BLOCK_GROUP_RAID1
| BTRFS_BLOCK_GROUP_DUP
;
248 } else if (strcmp(s
, "single") == 0) {
251 fprintf(stderr
, "Unknown option %s\n", s
);
257 static struct option long_options
[] = {
258 { "byte-count", 1, NULL
, 'b' },
259 { "leafsize", 1, NULL
, 'l' },
260 { "nodesize", 1, NULL
, 'n' },
261 { "sectorsize", 1, NULL
, 's' },
262 { "metadata", 1, NULL
, 'm' },
263 { "data", 1, NULL
, 'd' },
267 int main(int ac
, char **av
)
271 u64 dev_block_count
= 0;
276 u32 leafsize
= getpagesize();
277 u32 sectorsize
= 4096;
278 u32 nodesize
= leafsize
;
279 u32 stripesize
= 4096;
282 int option_index
= 0;
283 struct btrfs_root
*root
;
284 struct btrfs_trans_handle
*trans
;
285 u64 metadata_profile
= BTRFS_BLOCK_GROUP_RAID1
| BTRFS_BLOCK_GROUP_DUP
;
286 u64 data_profile
= BTRFS_BLOCK_GROUP_RAID0
;
290 c
= getopt_long(ac
, av
, "b:l:n:s:m:d:", long_options
,
296 data_profile
= parse_profile(optarg
);
299 metadata_profile
= parse_profile(optarg
);
302 leafsize
= parse_size(optarg
);
305 nodesize
= parse_size(optarg
);
308 sectorsize
= parse_size(optarg
);
311 block_count
= parse_size(optarg
);
318 sectorsize
= max(sectorsize
, (u32
)getpagesize());
319 if (leafsize
< sectorsize
|| (leafsize
& (sectorsize
- 1))) {
320 fprintf(stderr
, "Illegal leafsize %u\n", leafsize
);
323 if (nodesize
< sectorsize
|| (nodesize
& (sectorsize
- 1))) {
324 fprintf(stderr
, "Illegal nodesize %u\n", nodesize
);
332 ret
= check_mounted(file
);
334 fprintf(stderr
, "error checking %s mount status\n", file
);
338 fprintf(stderr
, "%s is mounted\n", file
);
342 fd
= open(file
, O_RDWR
);
344 fprintf(stderr
, "unable to open %s\n", file
);
348 ret
= btrfs_prepare_device(fd
, file
, zero_end
, &dev_block_count
);
349 if (block_count
== 0)
350 block_count
= dev_block_count
;
352 for (i
= 0; i
< 6; i
++)
353 blocks
[i
] = BTRFS_SUPER_INFO_OFFSET
+ leafsize
* i
;
355 ret
= make_btrfs(fd
, file
, blocks
, block_count
, nodesize
, leafsize
,
356 sectorsize
, stripesize
);
358 fprintf(stderr
, "error during mkfs %d\n", ret
);
361 ret
= make_root_dir(fd
, file
);
363 fprintf(stderr
, "failed to setup the root directory\n");
366 printf("fs created on %s nodesize %u leafsize %u sectorsize %u bytes %llu\n",
367 file
, nodesize
, leafsize
, sectorsize
,
368 (unsigned long long)block_count
);
370 root
= open_ctree(file
, 0);
371 trans
= btrfs_start_transaction(root
, 1);
376 btrfs_register_one_device(file
);
378 fprintf(stderr
, "ctree init failed\n");
385 ret
= check_mounted(file
);
387 fprintf(stderr
, "error checking %s mount status\n",
392 fprintf(stderr
, "%s is mounted\n", file
);
395 fd
= open(file
, O_RDWR
);
397 fprintf(stderr
, "unable to open %s\n", file
);
400 fprintf(stderr
, "adding device %s\n", file
);
401 ret
= btrfs_prepare_device(fd
, file
, zero_end
,
406 ret
= btrfs_add_to_fsid(trans
, root
, fd
, dev_block_count
,
407 sectorsize
, sectorsize
, sectorsize
);
409 btrfs_register_one_device(file
);
413 ret
= create_raid_groups(trans
, root
, data_profile
,
415 btrfs_commit_transaction(trans
, root
);
416 ret
= close_ctree(root
);