mkfs/main.c

   1 /*
   2  * Copyright (C) 2007 Oracle.  All rights reserved.
   3  *
   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.
   7  *
   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.
  12  *
  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.
  17  */
  18
  19 #include "kerncompat.h"
  20 #include "androidcompat.h"
  21
  22 #include <sys/ioctl.h>
  23 #include <sys/mount.h>
  24 #include "ioctl.h"
  25 #include <stdio.h>
  26 #include <stdlib.h>
  27 /* #include <sys/dir.h> included via androidcompat.h */
  28 #include <fcntl.h>
  29 #include <unistd.h>
  30 #include <getopt.h>
  31 #include <uuid/uuid.h>
  32 #include <ctype.h>
  33 #include <blkid/blkid.h>
  34 #include <ftw.h>
  35 #include "ctree.h"
  36 #include "disk-io.h"
  37 #include "volumes.h"
  38 #include "transaction.h"
  39 #include "utils.h"
  40 #include "list_sort.h"
  41 #include "help.h"
  42 #include "mkfs/common.h"
  43 #include "mkfs/rootdir.h"
  44 #include "fsfeatures.h"
  45
  46 static int verbose = 1;
  47
  48 struct mkfs_allocation {
  49         u64 data;
  50         u64 metadata;
  51         u64 mixed;
  52         u64 system;
  53 };
  54
  55 static int create_metadata_block_groups(struct btrfs_root *root, int mixed,
  56                                 struct mkfs_allocation *allocation)
  57 {
  58         struct btrfs_fs_info *fs_info = root->fs_info;
  59         struct btrfs_trans_handle *trans;
  60         u64 bytes_used;
  61         u64 chunk_start = 0;
  62         u64 chunk_size = 0;
  63         int ret;
  64
  65         trans = btrfs_start_transaction(root, 1);
  66         BUG_ON(IS_ERR(trans));
  67         bytes_used = btrfs_super_bytes_used(fs_info->super_copy);
  68
  69         root->fs_info->system_allocs = 1;
  70         ret = btrfs_make_block_group(trans, fs_info, bytes_used,
  71                                      BTRFS_BLOCK_GROUP_SYSTEM,
  72                                      BTRFS_FIRST_CHUNK_TREE_OBJECTID,
  73                                      0, BTRFS_MKFS_SYSTEM_GROUP_SIZE);
  74         allocation->system += BTRFS_MKFS_SYSTEM_GROUP_SIZE;
  75         if (ret)
  76                 return ret;
  77
  78         if (mixed) {
  79                 ret = btrfs_alloc_chunk(trans, fs_info,
  80                                         &chunk_start, &chunk_size,
  81                                         BTRFS_BLOCK_GROUP_METADATA |
  82                                         BTRFS_BLOCK_GROUP_DATA);
  83                 if (ret == -ENOSPC) {
  84                         error("no space to allocate data/metadata chunk");
  85                         goto err;
  86                 }
  87                 if (ret)
  88                         return ret;
  89                 ret = btrfs_make_block_group(trans, fs_info, 0,
  90                                              BTRFS_BLOCK_GROUP_METADATA |
  91                                              BTRFS_BLOCK_GROUP_DATA,
  92                                              BTRFS_FIRST_CHUNK_TREE_OBJECTID,
  93                                              chunk_start, chunk_size);
  94                 if (ret)
  95                         return ret;
  96                 allocation->mixed += chunk_size;
  97         } else {
  98                 ret = btrfs_alloc_chunk(trans, fs_info,
  99                                         &chunk_start, &chunk_size,
 100                                         BTRFS_BLOCK_GROUP_METADATA);
 101                 if (ret == -ENOSPC) {
 102                         error("no space to allocate metadata chunk");
 103                         goto err;
 104                 }
 105                 if (ret)
 106                         return ret;
 107                 ret = btrfs_make_block_group(trans, fs_info, 0,
 108                                              BTRFS_BLOCK_GROUP_METADATA,
 109                                              BTRFS_FIRST_CHUNK_TREE_OBJECTID,
 110                                              chunk_start, chunk_size);
 111                 allocation->metadata += chunk_size;
 112                 if (ret)
 113                         return ret;
 114         }
 115
 116         root->fs_info->system_allocs = 0;
 117         ret = btrfs_commit_transaction(trans, root);
 118
 119 err:
 120         return ret;
 121 }
 122
 123 static int create_data_block_groups(struct btrfs_trans_handle *trans,
 124                 struct btrfs_root *root, int mixed,
 125                 struct mkfs_allocation *allocation)
 126 {
 127         struct btrfs_fs_info *fs_info = root->fs_info;
 128         u64 chunk_start = 0;
 129         u64 chunk_size = 0;
 130         int ret = 0;
 131
 132         if (!mixed) {
 133                 ret = btrfs_alloc_chunk(trans, fs_info,
 134                                         &chunk_start, &chunk_size,
 135                                         BTRFS_BLOCK_GROUP_DATA);
 136                 if (ret == -ENOSPC) {
 137                         error("no space to allocate data chunk");
 138                         goto err;
 139                 }
 140                 if (ret)
 141                         return ret;
 142                 ret = btrfs_make_block_group(trans, fs_info, 0,
 143                                              BTRFS_BLOCK_GROUP_DATA,
 144                                              BTRFS_FIRST_CHUNK_TREE_OBJECTID,
 145                                              chunk_start, chunk_size);
 146                 allocation->data += chunk_size;
 147                 if (ret)
 148                         return ret;
 149         }
 150
 151 err:
 152         return ret;
 153 }
 154
 155 static int make_root_dir(struct btrfs_trans_handle *trans,
 156                 struct btrfs_root *root)
 157 {
 158         struct btrfs_key location;
 159         int ret;
 160
 161         ret = btrfs_make_root_dir(trans, root->fs_info->tree_root,
 162                               BTRFS_ROOT_TREE_DIR_OBJECTID);
 163         if (ret)
 164                 goto err;
 165         ret = btrfs_make_root_dir(trans, root, BTRFS_FIRST_FREE_OBJECTID);
 166         if (ret)
 167                 goto err;
 168         memcpy(&location, &root->fs_info->fs_root->root_key, sizeof(location));
 169         location.offset = (u64)-1;
 170         ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
 171                         "default", 7,
 172                         btrfs_super_root_dir(root->fs_info->super_copy),
 173                         &location, BTRFS_FT_DIR, 0);
 174         if (ret)
 175                 goto err;
 176
 177         ret = btrfs_insert_inode_ref(trans, root->fs_info->tree_root,
 178                              "default", 7, location.objectid,
 179                              BTRFS_ROOT_TREE_DIR_OBJECTID, 0);
 180         if (ret)
 181                 goto err;
 182
 183 err:
 184         return ret;
 185 }
 186
 187 static int __recow_root(struct btrfs_trans_handle *trans,
 188                          struct btrfs_root *root)
 189 {
 190         struct extent_buffer *tmp;
 191         int ret;
 192
 193         if (trans->transid != btrfs_root_generation(&root->root_item)) {
 194                 extent_buffer_get(root->node);
 195                 ret = __btrfs_cow_block(trans, root, root->node,
 196                                         NULL, 0, &tmp, 0, 0);
 197                 if (ret)
 198                         return ret;
 199                 free_extent_buffer(tmp);
 200         }
 201
 202         return 0;
 203 }
 204
 205 static int recow_roots(struct btrfs_trans_handle *trans,
 206                        struct btrfs_root *root)
 207 {
 208         struct btrfs_fs_info *info = root->fs_info;
 209         int ret;
 210
 211         ret = __recow_root(trans, info->fs_root);
 212         if (ret)
 213                 return ret;
 214         ret = __recow_root(trans, info->tree_root);
 215         if (ret)
 216                 return ret;
 217         ret = __recow_root(trans, info->extent_root);
 218         if (ret)
 219                 return ret;
 220         ret = __recow_root(trans, info->chunk_root);
 221         if (ret)
 222                 return ret;
 223         ret = __recow_root(trans, info->dev_root);
 224         if (ret)
 225                 return ret;
 226         ret = __recow_root(trans, info->csum_root);
 227         if (ret)
 228                 return ret;
 229
 230         return 0;
 231 }
 232
 233 static int create_one_raid_group(struct btrfs_trans_handle *trans,
 234                               struct btrfs_root *root, u64 type,
 235                               struct mkfs_allocation *allocation)
 236
 237 {
 238         struct btrfs_fs_info *fs_info = root->fs_info;
 239         u64 chunk_start;
 240         u64 chunk_size;
 241         int ret;
 242
 243         ret = btrfs_alloc_chunk(trans, fs_info,
 244                                 &chunk_start, &chunk_size, type);
 245         if (ret == -ENOSPC) {
 246                 error("not enough free space to allocate chunk");
 247                 exit(1);
 248         }
 249         if (ret)
 250                 return ret;
 251
 252         ret = btrfs_make_block_group(trans, fs_info, 0,
 253                                      type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
 254                                      chunk_start, chunk_size);
 255
 256         type &= BTRFS_BLOCK_GROUP_TYPE_MASK;
 257         if (type == BTRFS_BLOCK_GROUP_DATA) {
 258                 allocation->data += chunk_size;
 259         } else if (type == BTRFS_BLOCK_GROUP_METADATA) {
 260                 allocation->metadata += chunk_size;
 261         } else if (type == BTRFS_BLOCK_GROUP_SYSTEM) {
 262                 allocation->system += chunk_size;
 263         } else if (type ==
 264                         (BTRFS_BLOCK_GROUP_METADATA | BTRFS_BLOCK_GROUP_DATA)) {
 265                 allocation->mixed += chunk_size;
 266         } else {
 267                 error("unrecognized profile type: 0x%llx",
 268                                 (unsigned long long)type);
 269                 ret = -EINVAL;
 270         }
 271
 272         return ret;
 273 }
 274
 275 static int create_raid_groups(struct btrfs_trans_handle *trans,
 276                               struct btrfs_root *root, u64 data_profile,
 277                               u64 metadata_profile, int mixed,
 278                               struct mkfs_allocation *allocation)
 279 {
 280         int ret;
 281
 282         if (metadata_profile) {
 283                 u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
 284
 285                 ret = create_one_raid_group(trans, root,
 286                                             BTRFS_BLOCK_GROUP_SYSTEM |
 287                                             metadata_profile, allocation);
 288                 if (ret)
 289                         return ret;
 290
 291                 if (mixed)
 292                         meta_flags |= BTRFS_BLOCK_GROUP_DATA;
 293
 294                 ret = create_one_raid_group(trans, root, meta_flags |
 295                                             metadata_profile, allocation);
 296                 if (ret)
 297                         return ret;
 298
 299         }
 300         if (!mixed && data_profile) {
 301                 ret = create_one_raid_group(trans, root,
 302                                             BTRFS_BLOCK_GROUP_DATA |
 303                                             data_profile, allocation);
 304                 if (ret)
 305                         return ret;
 306         }
 307         ret = recow_roots(trans, root);
 308
 309         return ret;
 310 }
 311
 312 static int create_tree(struct btrfs_trans_handle *trans,
 313                         struct btrfs_root *root, u64 objectid)
 314 {
 315         struct btrfs_key location;
 316         struct btrfs_root_item root_item;
 317         struct extent_buffer *tmp;
 318         int ret;
 319
 320         ret = btrfs_copy_root(trans, root, root->node, &tmp, objectid);
 321         if (ret)
 322                 return ret;
 323
 324         memcpy(&root_item, &root->root_item, sizeof(root_item));
 325         btrfs_set_root_bytenr(&root_item, tmp->start);
 326         btrfs_set_root_level(&root_item, btrfs_header_level(tmp));
 327         btrfs_set_root_generation(&root_item, trans->transid);
 328         free_extent_buffer(tmp);
 329
 330         location.objectid = objectid;
 331         location.type = BTRFS_ROOT_ITEM_KEY;
 332         location.offset = 0;
 333         ret = btrfs_insert_root(trans, root->fs_info->tree_root,
 334                                 &location, &root_item);
 335
 336         return ret;
 337 }
 338
 339 static void print_usage(int ret)
 340 {
 341         printf("Usage: mkfs.btrfs [options] dev [ dev ... ]\n");
 342         printf("Options:\n");
 343         printf("  allocation profiles:\n");
 344         printf("\t-d|--data PROFILE       data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
 345         printf("\t-m|--metadata PROFILE   metadata profile, values like for data profile\n");
 346         printf("\t-M|--mixed              mix metadata and data together\n");
 347         printf("  features:\n");
 348         printf("\t-n|--nodesize SIZE      size of btree nodes\n");
 349         printf("\t-s|--sectorsize SIZE    data block size (may not be mountable by current kernel)\n");
 350         printf("\t-O|--features LIST      comma separated list of filesystem features (use '-O list-all' to list features)\n");
 351         printf("\t-L|--label LABEL        set the filesystem label\n");
 352         printf("\t-U|--uuid UUID          specify the filesystem UUID (must be unique)\n");
 353         printf("  creation:\n");
 354         printf("\t-b|--byte-count SIZE    set filesystem size to SIZE (on the first device)\n");
 355         printf("\t-r|--rootdir DIR        copy files from DIR to the image root directory\n");
 356         printf("\t-K|--nodiscard          do not perform whole device TRIM\n");
 357         printf("\t-f|--force              force overwrite of existing filesystem\n");
 358         printf("  general:\n");
 359         printf("\t-q|--quiet              no messages except errors\n");
 360         printf("\t-V|--version            print the mkfs.btrfs version and exit\n");
 361         printf("\t--help                  print this help and exit\n");
 362         printf("  deprecated:\n");
 363         printf("\t-A|--alloc-start START  the offset to start the filesystem\n");
 364         printf("\t-l|--leafsize SIZE      deprecated, alias for nodesize\n");
 365         exit(ret);
 366 }
 367
 368 static u64 parse_profile(const char *s)
 369 {
 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) {
 383                 return 0;
 384         } else {
 385                 error("unknown profile %s", s);
 386                 exit(1);
 387         }
 388         /* not reached */
 389         return 0;
 390 }
 391
 392 static char *parse_label(const char *input)
 393 {
 394         int len = strlen(input);
 395
 396         if (len >= BTRFS_LABEL_SIZE) {
 397                 error("label %s is too long (max %d)", input,
 398                         BTRFS_LABEL_SIZE - 1);
 399                 exit(1);
 400         }
 401         return strdup(input);
 402 }
 403
 404 static int create_chunks(struct btrfs_trans_handle *trans,
 405                          struct btrfs_root *root, u64 num_of_meta_chunks,
 406                          u64 size_of_data,
 407                          struct mkfs_allocation *allocation)
 408 {
 409         struct btrfs_fs_info *fs_info = root->fs_info;
 410         u64 chunk_start;
 411         u64 chunk_size;
 412         u64 meta_type = BTRFS_BLOCK_GROUP_METADATA;
 413         u64 data_type = BTRFS_BLOCK_GROUP_DATA;
 414         u64 minimum_data_chunk_size = SZ_8M;
 415         u64 i;
 416         int ret;
 417
 418         for (i = 0; i < num_of_meta_chunks; i++) {
 419                 ret = btrfs_alloc_chunk(trans, fs_info,
 420                                         &chunk_start, &chunk_size, meta_type);
 421                 if (ret)
 422                         return ret;
 423                 ret = btrfs_make_block_group(trans, fs_info, 0,
 424                                              meta_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
 425                                              chunk_start, chunk_size);
 426                 allocation->metadata += chunk_size;
 427                 if (ret)
 428                         return ret;
 429                 set_extent_dirty(&root->fs_info->free_space_cache,
 430                                  chunk_start, chunk_start + chunk_size - 1);
 431         }
 432
 433         if (size_of_data < minimum_data_chunk_size)
 434                 size_of_data = minimum_data_chunk_size;
 435
 436         ret = btrfs_alloc_data_chunk(trans, fs_info,
 437                                      &chunk_start, size_of_data, data_type, 0);
 438         if (ret)
 439                 return ret;
 440         ret = btrfs_make_block_group(trans, fs_info, 0,
 441                                      data_type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
 442                                      chunk_start, size_of_data);
 443         allocation->data += size_of_data;
 444         if (ret)
 445                 return ret;
 446         set_extent_dirty(&root->fs_info->free_space_cache,
 447                          chunk_start, chunk_start + size_of_data - 1);
 448         return ret;
 449 }
 450
 451 /*
 452  * This ignores symlinks with unreadable targets and subdirs that can't
 453  * be read.  It's a best-effort to give a rough estimate of the size of
 454  * a subdir.  It doesn't guarantee that prepopulating btrfs from this
 455  * tree won't still run out of space.
 456  */
 457 static u64 global_total_size;
 458 static u64 fs_block_size;
 459 static int ftw_add_entry_size(const char *fpath, const struct stat *st,
 460                               int type)
 461 {
 462         if (type == FTW_F || type == FTW_D)
 463                 global_total_size += round_up(st->st_size, fs_block_size);
 464
 465         return 0;
 466 }
 467
 468 static u64 size_sourcedir(const char *dir_name, u64 sectorsize,
 469                           u64 *num_of_meta_chunks_ret, u64 *size_of_data_ret)
 470 {
 471         u64 dir_size = 0;
 472         u64 total_size = 0;
 473         int ret;
 474         u64 default_chunk_size = SZ_8M;
 475         u64 allocated_meta_size = SZ_8M;
 476         u64 allocated_total_size = 20 * SZ_1M;  /* 20MB */
 477         u64 num_of_meta_chunks = 0;
 478         u64 num_of_data_chunks = 0;
 479         u64 num_of_allocated_meta_chunks =
 480                         allocated_meta_size / default_chunk_size;
 481
 482         global_total_size = 0;
 483         fs_block_size = sectorsize;
 484         ret = ftw(dir_name, ftw_add_entry_size, 10);
 485         dir_size = global_total_size;
 486         if (ret < 0) {
 487                 error("ftw subdir walk of %s failed: %s", dir_name,
 488                         strerror(errno));
 489                 exit(1);
 490         }
 491
 492         num_of_data_chunks = (dir_size + default_chunk_size - 1) /
 493                 default_chunk_size;
 494
 495         num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
 496         if (((dir_size / 2) % default_chunk_size) != 0)
 497                 num_of_meta_chunks++;
 498         if (num_of_meta_chunks <= num_of_allocated_meta_chunks)
 499                 num_of_meta_chunks = 0;
 500         else
 501                 num_of_meta_chunks -= num_of_allocated_meta_chunks;
 502
 503         total_size = allocated_total_size +
 504                      (num_of_data_chunks * default_chunk_size) +
 505                      (num_of_meta_chunks * default_chunk_size);
 506
 507         *num_of_meta_chunks_ret = num_of_meta_chunks;
 508         *size_of_data_ret = num_of_data_chunks * default_chunk_size;
 509         return total_size;
 510 }
 511
 512 static int zero_output_file(int out_fd, u64 size)
 513 {
 514         int loop_num;
 515         u64 location = 0;
 516         char buf[SZ_4K];
 517         int ret = 0, i;
 518         ssize_t written;
 519
 520         memset(buf, 0, SZ_4K);
 521
 522         /* Only zero out the first 1M */
 523         loop_num = SZ_1M / SZ_4K;
 524         for (i = 0; i < loop_num; i++) {
 525                 written = pwrite64(out_fd, buf, SZ_4K, location);
 526                 if (written != SZ_4K)
 527                         ret = -EIO;
 528                 location += SZ_4K;
 529         }
 530
 531         /* Then enlarge the file to size */
 532         written = pwrite64(out_fd, buf, 1, size - 1);
 533         if (written < 1)
 534                 ret = -EIO;
 535         return ret;
 536 }
 537
 538 static int is_ssd(const char *file)
 539 {
 540         blkid_probe probe;
 541         char wholedisk[PATH_MAX];
 542         char sysfs_path[PATH_MAX];
 543         dev_t devno;
 544         int fd;
 545         char rotational;
 546         int ret;
 547
 548         probe = blkid_new_probe_from_filename(file);
 549         if (!probe)
 550                 return 0;
 551
 552         /* Device number of this disk (possibly a partition) */
 553         devno = blkid_probe_get_devno(probe);
 554         if (!devno) {
 555                 blkid_free_probe(probe);
 556                 return 0;
 557         }
 558
 559         /* Get whole disk name (not full path) for this devno */
 560         ret = blkid_devno_to_wholedisk(devno,
 561                         wholedisk, sizeof(wholedisk), NULL);
 562         if (ret) {
 563                 blkid_free_probe(probe);
 564                 return 0;
 565         }
 566
 567         snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational",
 568                  wholedisk);
 569
 570         blkid_free_probe(probe);
 571
 572         fd = open(sysfs_path, O_RDONLY);
 573         if (fd < 0) {
 574                 return 0;
 575         }
 576
 577         if (read(fd, &rotational, 1) < 1) {
 578                 close(fd);
 579                 return 0;
 580         }
 581         close(fd);
 582
 583         return rotational == '0';
 584 }
 585
 586 static int _cmp_device_by_id(void *priv, struct list_head *a,
 587                              struct list_head *b)
 588 {
 589         return list_entry(a, struct btrfs_device, dev_list)->devid -
 590                list_entry(b, struct btrfs_device, dev_list)->devid;
 591 }
 592
 593 static void list_all_devices(struct btrfs_root *root)
 594 {
 595         struct btrfs_fs_devices *fs_devices;
 596         struct btrfs_device *device;
 597         int number_of_devices = 0;
 598         u64 total_block_count = 0;
 599
 600         fs_devices = root->fs_info->fs_devices;
 601
 602         list_for_each_entry(device, &fs_devices->devices, dev_list)
 603                 number_of_devices++;
 604
 605         list_sort(NULL, &fs_devices->devices, _cmp_device_by_id);
 606
 607         printf("Number of devices:  %d\n", number_of_devices);
 608         /* printf("Total devices size: %10s\n", */
 609                 /* pretty_size(total_block_count)); */
 610         printf("Devices:\n");
 611         printf("   ID        SIZE  PATH\n");
 612         list_for_each_entry(device, &fs_devices->devices, dev_list) {
 613                 printf("  %3llu  %10s  %s\n",
 614                         device->devid,
 615                         pretty_size(device->total_bytes),
 616                         device->name);
 617                 total_block_count += device->total_bytes;
 618         }
 619
 620         printf("\n");
 621 }
 622
 623 static int is_temp_block_group(struct extent_buffer *node,
 624                                struct btrfs_block_group_item *bgi,
 625                                u64 data_profile, u64 meta_profile,
 626                                u64 sys_profile)
 627 {
 628         u64 flag = btrfs_disk_block_group_flags(node, bgi);
 629         u64 flag_type = flag & BTRFS_BLOCK_GROUP_TYPE_MASK;
 630         u64 flag_profile = flag & BTRFS_BLOCK_GROUP_PROFILE_MASK;
 631         u64 used = btrfs_disk_block_group_used(node, bgi);
 632
 633         /*
 634          * Chunks meets all the following conditions is a temp chunk
 635          * 1) Empty chunk
 636          * Temp chunk is always empty.
 637          *
 638          * 2) profile mismatch with mkfs profile.
 639          * Temp chunk is always in SINGLE
 640          *
 641          * 3) Size differs with mkfs_alloc
 642          * Special case for SINGLE/SINGLE btrfs.
 643          * In that case, temp data chunk and real data chunk are always empty.
 644          * So we need to use mkfs_alloc to be sure which chunk is the newly
 645          * allocated.
 646          *
 647          * Normally, new chunk size is equal to mkfs one (One chunk)
 648          * If it has multiple chunks, we just refuse to delete any one.
 649          * As they are all single, so no real problem will happen.
 650          * So only use condition 1) and 2) to judge them.
 651          */
 652         if (used != 0)
 653                 return 0;
 654         switch (flag_type) {
 655         case BTRFS_BLOCK_GROUP_DATA:
 656         case BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA:
 657                 data_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
 658                 if (flag_profile != data_profile)
 659                         return 1;
 660                 break;
 661         case BTRFS_BLOCK_GROUP_METADATA:
 662                 meta_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
 663                 if (flag_profile != meta_profile)
 664                         return 1;
 665                 break;
 666         case BTRFS_BLOCK_GROUP_SYSTEM:
 667                 sys_profile &= BTRFS_BLOCK_GROUP_PROFILE_MASK;
 668                 if (flag_profile != sys_profile)
 669                         return 1;
 670                 break;
 671         }
 672         return 0;
 673 }
 674
 675 /* Note: if current is a block group, it will skip it anyway */
 676 static int next_block_group(struct btrfs_root *root,
 677                             struct btrfs_path *path)
 678 {
 679         struct btrfs_key key;
 680         int ret = 0;
 681
 682         while (1) {
 683                 ret = btrfs_next_item(root, path);
 684                 if (ret)
 685                         goto out;
 686
 687                 btrfs_item_key_to_cpu(path->nodes[0], &key, path->slots[0]);
 688                 if (key.type == BTRFS_BLOCK_GROUP_ITEM_KEY)
 689                         goto out;
 690         }
 691 out:
 692         return ret;
 693 }
 694
 695 /* This function will cleanup  */
 696 static int cleanup_temp_chunks(struct btrfs_fs_info *fs_info,
 697                                struct mkfs_allocation *alloc,
 698                                u64 data_profile, u64 meta_profile,
 699                                u64 sys_profile)
 700 {
 701         struct btrfs_trans_handle *trans = NULL;
 702         struct btrfs_block_group_item *bgi;
 703         struct btrfs_root *root = fs_info->extent_root;
 704         struct btrfs_key key;
 705         struct btrfs_key found_key;
 706         struct btrfs_path path;
 707         int ret = 0;
 708
 709         btrfs_init_path(&path);
 710         trans = btrfs_start_transaction(root, 1);
 711         BUG_ON(IS_ERR(trans));
 712
 713         key.objectid = 0;
 714         key.type = BTRFS_BLOCK_GROUP_ITEM_KEY;
 715         key.offset = 0;
 716
 717         while (1) {
 718                 /*
 719                  * as the rest of the loop may modify the tree, we need to
 720                  * start a new search each time.
 721                  */
 722                 ret = btrfs_search_slot(trans, root, &key, &path, 0, 0);
 723                 if (ret < 0)
 724                         goto out;
 725                 /* Don't pollute ret for >0 case */
 726                 if (ret > 0)
 727                         ret = 0;
 728
 729                 btrfs_item_key_to_cpu(path.nodes[0], &found_key,
 730                                       path.slots[0]);
 731                 if (found_key.objectid < key.objectid)
 732                         goto out;
 733                 if (found_key.type != BTRFS_BLOCK_GROUP_ITEM_KEY) {
 734                         ret = next_block_group(root, &path);
 735                         if (ret < 0)
 736                                 goto out;
 737                         if (ret > 0) {
 738                                 ret = 0;
 739                                 goto out;
 740                         }
 741                         btrfs_item_key_to_cpu(path.nodes[0], &found_key,
 742                                               path.slots[0]);
 743                 }
 744
 745                 bgi = btrfs_item_ptr(path.nodes[0], path.slots[0],
 746                                      struct btrfs_block_group_item);
 747                 if (is_temp_block_group(path.nodes[0], bgi,
 748                                         data_profile, meta_profile,
 749                                         sys_profile)) {
 750                         u64 flags = btrfs_disk_block_group_flags(path.nodes[0],
 751                                                              bgi);
 752
 753                         ret = btrfs_free_block_group(trans, fs_info,
 754                                         found_key.objectid, found_key.offset);
 755                         if (ret < 0)
 756                                 goto out;
 757
 758                         if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
 759                             BTRFS_BLOCK_GROUP_DATA)
 760                                 alloc->data -= found_key.offset;
 761                         else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
 762                                  BTRFS_BLOCK_GROUP_METADATA)
 763                                 alloc->metadata -= found_key.offset;
 764                         else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
 765                                  BTRFS_BLOCK_GROUP_SYSTEM)
 766                                 alloc->system -= found_key.offset;
 767                         else if ((flags & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
 768                                  (BTRFS_BLOCK_GROUP_METADATA |
 769                                   BTRFS_BLOCK_GROUP_DATA))
 770                                 alloc->mixed -= found_key.offset;
 771                 }
 772                 btrfs_release_path(&path);
 773                 key.objectid = found_key.objectid + found_key.offset;
 774         }
 775 out:
 776         if (trans)
 777                 btrfs_commit_transaction(trans, root);
 778         btrfs_release_path(&path);
 779         return ret;
 780 }
 781
 782 int main(int argc, char **argv)
 783 {
 784         char *file;
 785         struct btrfs_root *root;
 786         struct btrfs_fs_info *fs_info;
 787         struct btrfs_trans_handle *trans;
 788         char *label = NULL;
 789         u64 block_count = 0;
 790         u64 dev_block_count = 0;
 791         u64 alloc_start = 0;
 792         u64 metadata_profile = 0;
 793         u64 data_profile = 0;
 794         u32 nodesize = max_t(u32, sysconf(_SC_PAGESIZE),
 795                         BTRFS_MKFS_DEFAULT_NODE_SIZE);
 796         u32 sectorsize = 4096;
 797         u32 stripesize = 4096;
 798         int zero_end = 1;
 799         int fd = -1;
 800         int ret;
 801         int close_ret;
 802         int i;
 803         int mixed = 0;
 804         int nodesize_forced = 0;
 805         int data_profile_opt = 0;
 806         int metadata_profile_opt = 0;
 807         int discard = 1;
 808         int ssd = 0;
 809         int force_overwrite = 0;
 810         char *source_dir = NULL;
 811         int source_dir_set = 0;
 812         u64 num_of_meta_chunks = 0;
 813         u64 size_of_data = 0;
 814         u64 source_dir_size = 0;
 815         u64 min_dev_size;
 816         int dev_cnt = 0;
 817         int saved_optind;
 818         char fs_uuid[BTRFS_UUID_UNPARSED_SIZE] = { 0 };
 819         u64 features = BTRFS_MKFS_DEFAULT_FEATURES;
 820         struct mkfs_allocation allocation = { 0 };
 821         struct btrfs_mkfs_config mkfs_cfg;
 822
 823         while(1) {
 824                 int c;
 825                 static const struct option long_options[] = {
 826                         { "alloc-start", required_argument, NULL, 'A'},
 827                         { "byte-count", required_argument, NULL, 'b' },
 828                         { "force", no_argument, NULL, 'f' },
 829                         { "leafsize", required_argument, NULL, 'l' },
 830                         { "label", required_argument, NULL, 'L'},
 831                         { "metadata", required_argument, NULL, 'm' },
 832                         { "mixed", no_argument, NULL, 'M' },
 833                         { "nodesize", required_argument, NULL, 'n' },
 834                         { "sectorsize", required_argument, NULL, 's' },
 835                         { "data", required_argument, NULL, 'd' },
 836                         { "version", no_argument, NULL, 'V' },
 837                         { "rootdir", required_argument, NULL, 'r' },
 838                         { "nodiscard", no_argument, NULL, 'K' },
 839                         { "features", required_argument, NULL, 'O' },
 840                         { "uuid", required_argument, NULL, 'U' },
 841                         { "quiet", 0, NULL, 'q' },
 842                         { "help", no_argument, NULL, GETOPT_VAL_HELP },
 843                         { NULL, 0, NULL, 0}
 844                 };
 845
 846                 c = getopt_long(argc, argv, "A:b:fl:n:s:m:d:L:O:r:U:VMKq",
 847                                 long_options, NULL);
 848                 if (c < 0)
 849                         break;
 850                 switch(c) {
 851                         case 'A':
 852                                 alloc_start = parse_size(optarg);
 853                                 break;
 854                         case 'f':
 855                                 force_overwrite = 1;
 856                                 break;
 857                         case 'd':
 858                                 data_profile = parse_profile(optarg);
 859                                 data_profile_opt = 1;
 860                                 break;
 861                         case 'l':
 862                                 warning("--leafsize is deprecated, use --nodesize");
 863                                 /* fall through */
 864                         case 'n':
 865                                 nodesize = parse_size(optarg);
 866                                 nodesize_forced = 1;
 867                                 break;
 868                         case 'L':
 869                                 label = parse_label(optarg);
 870                                 break;
 871                         case 'm':
 872                                 metadata_profile = parse_profile(optarg);
 873                                 metadata_profile_opt = 1;
 874                                 break;
 875                         case 'M':
 876                                 mixed = 1;
 877                                 break;
 878                         case 'O': {
 879                                 char *orig = strdup(optarg);
 880                                 char *tmp = orig;
 881
 882                                 tmp = btrfs_parse_fs_features(tmp, &features);
 883                                 if (tmp) {
 884                                         error("unrecognized filesystem feature '%s'",
 885                                                         tmp);
 886                                         free(orig);
 887                                         goto error;
 888                                 }
 889                                 free(orig);
 890                                 if (features & BTRFS_FEATURE_LIST_ALL) {
 891                                         btrfs_list_all_fs_features(0);
 892                                         goto success;
 893                                 }
 894                                 break;
 895                                 }
 896                         case 's':
 897                                 sectorsize = parse_size(optarg);
 898                                 break;
 899                         case 'b':
 900                                 block_count = parse_size(optarg);
 901                                 zero_end = 0;
 902                                 break;
 903                         case 'V':
 904                                 printf("mkfs.btrfs, part of %s\n",
 905                                                 PACKAGE_STRING);
 906                                 goto success;
 907                         case 'r':
 908                                 source_dir = optarg;
 909                                 source_dir_set = 1;
 910                                 break;
 911                         case 'U':
 912                                 strncpy(fs_uuid, optarg,
 913                                         BTRFS_UUID_UNPARSED_SIZE - 1);
 914                                 break;
 915                         case 'K':
 916                                 discard = 0;
 917                                 break;
 918                         case 'q':
 919                                 verbose = 0;
 920                                 break;
 921                         case GETOPT_VAL_HELP:
 922                         default:
 923                                 print_usage(c != GETOPT_VAL_HELP);
 924                 }
 925         }
 926
 927         if (verbose) {
 928                 printf("%s\n", PACKAGE_STRING);
 929                 printf("See %s for more information.\n\n", PACKAGE_URL);
 930         }
 931
 932         sectorsize = max(sectorsize, (u32)sysconf(_SC_PAGESIZE));
 933         stripesize = sectorsize;
 934         saved_optind = optind;
 935         dev_cnt = argc - optind;
 936         if (dev_cnt == 0)
 937                 print_usage(1);
 938
 939         if (source_dir_set && dev_cnt > 1) {
 940                 error("the option -r is limited to a single device");
 941                 goto error;
 942         }
 943
 944         if (*fs_uuid) {
 945                 uuid_t dummy_uuid;
 946
 947                 if (uuid_parse(fs_uuid, dummy_uuid) != 0) {
 948                         error("could not parse UUID: %s", fs_uuid);
 949                         goto error;
 950                 }
 951                 if (!test_uuid_unique(fs_uuid)) {
 952                         error("non-unique UUID: %s", fs_uuid);
 953                         goto error;
 954                 }
 955         }
 956
 957         while (dev_cnt-- > 0) {
 958                 file = argv[optind++];
 959                 if (is_block_device(file) == 1)
 960                         ret = test_dev_for_mkfs(file, force_overwrite);
 961                 else
 962                         ret = test_status_for_mkfs(file, force_overwrite);
 963
 964                 if (ret)
 965                         goto error;
 966         }
 967
 968         optind = saved_optind;
 969         dev_cnt = argc - optind;
 970
 971         file = argv[optind++];
 972         ssd = is_ssd(file);
 973
 974         /*
 975         * Set default profiles according to number of added devices.
 976         * For mixed groups defaults are single/single.
 977         */
 978         if (!mixed) {
 979                 if (!metadata_profile_opt) {
 980                         if (dev_cnt == 1 && ssd && verbose)
 981                                 printf("Detected a SSD, turning off metadata "
 982                                 "duplication.  Mkfs with -m dup if you want to "
 983                                 "force metadata duplication.\n");
 984
 985                         metadata_profile = (dev_cnt > 1) ?
 986                                         BTRFS_BLOCK_GROUP_RAID1 : (ssd) ?
 987                                         0: BTRFS_BLOCK_GROUP_DUP;
 988                 }
 989                 if (!data_profile_opt) {
 990                         data_profile = (dev_cnt > 1) ?
 991                                 BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
 992                 }
 993         } else {
 994                 u32 best_nodesize = max_t(u32, sysconf(_SC_PAGESIZE), sectorsize);
 995
 996                 if (metadata_profile_opt || data_profile_opt) {
 997                         if (metadata_profile != data_profile) {
 998                                 error(
 999         "with mixed block groups data and metadata profiles must be the same");
1000                                 goto error;
1001                         }
1002                 }
1003
1004                 if (!nodesize_forced)
1005                         nodesize = best_nodesize;
1006         }
1007
1008         /*
1009          * FS features that can be set by other means than -O
1010          * just set the bit here
1011          */
1012         if (mixed)
1013                 features |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
1014
1015         if ((data_profile | metadata_profile) &
1016             (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
1017                 features |= BTRFS_FEATURE_INCOMPAT_RAID56;
1018         }
1019
1020         if (btrfs_check_nodesize(nodesize, sectorsize,
1021                                  features))
1022                 goto error;
1023
1024         if (sectorsize < sizeof(struct btrfs_super_block)) {
1025                 error("sectorsize smaller than superblock: %u < %zu",
1026                                 sectorsize, sizeof(struct btrfs_super_block));
1027                 goto error;
1028         }
1029
1030         min_dev_size = btrfs_min_dev_size(nodesize, mixed, metadata_profile,
1031                                           data_profile);
1032         /* Check device/block_count after the nodesize is determined */
1033         if (block_count && block_count < min_dev_size) {
1034                 error("size %llu is too small to make a usable filesystem",
1035                         block_count);
1036                 error("minimum size for btrfs filesystem is %llu",
1037                         min_dev_size);
1038                 goto error;
1039         }
1040         for (i = saved_optind; i < saved_optind + dev_cnt; i++) {
1041                 char *path;
1042
1043                 path = argv[i];
1044                 ret = test_minimum_size(path, min_dev_size);
1045                 if (ret < 0) {
1046                         error("failed to check size for %s: %s",
1047                                 path, strerror(-ret));
1048                         goto error;
1049                 }
1050                 if (ret > 0) {
1051                         error("'%s' is too small to make a usable filesystem",
1052                                 path);
1053                         error("minimum size for each btrfs device is %llu",
1054                                 min_dev_size);
1055                         goto error;
1056                 }
1057         }
1058         ret = test_num_disk_vs_raid(metadata_profile, data_profile,
1059                         dev_cnt, mixed, ssd);
1060         if (ret)
1061                 goto error;
1062
1063         dev_cnt--;
1064
1065         if (!source_dir_set) {
1066                 /*
1067                  * open without O_EXCL so that the problem should not
1068                  * occur by the following processing.
1069                  * (btrfs_register_one_device() fails if O_EXCL is on)
1070                  */
1071                 fd = open(file, O_RDWR);
1072                 if (fd < 0) {
1073                         error("unable to open %s: %s", file, strerror(errno));
1074                         goto error;
1075                 }
1076                 ret = btrfs_prepare_device(fd, file, &dev_block_count,
1077                                 block_count,
1078                                 (zero_end ? PREP_DEVICE_ZERO_END : 0) |
1079                                 (discard ? PREP_DEVICE_DISCARD : 0) |
1080                                 (verbose ? PREP_DEVICE_VERBOSE : 0));
1081                 if (ret) {
1082                         goto error;
1083                 }
1084                 if (block_count && block_count > dev_block_count) {
1085                         error("%s is smaller than requested size, expected %llu, found %llu",
1086                                         file,
1087                                         (unsigned long long)block_count,
1088                                         (unsigned long long)dev_block_count);
1089                         goto error;
1090                 }
1091         } else {
1092                 fd = open(file, O_CREAT | O_RDWR,
1093                                 S_IRUSR | S_IWUSR | S_IRGRP | S_IWGRP | S_IROTH);
1094                 if (fd < 0) {
1095                         error("unable to open %s: %s", file, strerror(errno));
1096                         goto error;
1097                 }
1098
1099                 source_dir_size = size_sourcedir(source_dir, sectorsize,
1100                                              &num_of_meta_chunks, &size_of_data);
1101                 if(block_count < source_dir_size)
1102                         block_count = source_dir_size;
1103                 ret = zero_output_file(fd, block_count);
1104                 if (ret) {
1105                         error("unable to zero the output file");
1106                         goto error;
1107                 }
1108                 /* our "device" is the new image file */
1109                 dev_block_count = block_count;
1110         }
1111
1112         /* To create the first block group and chunk 0 in make_btrfs */
1113         if (dev_block_count < BTRFS_MKFS_SYSTEM_GROUP_SIZE) {
1114                 error("device is too small to make filesystem, must be at least %llu",
1115                                 (unsigned long long)BTRFS_MKFS_SYSTEM_GROUP_SIZE);
1116                 goto error;
1117         }
1118
1119         if (group_profile_max_safe_loss(metadata_profile) <
1120                 group_profile_max_safe_loss(data_profile)){
1121                 warning("metadata has lower redundancy than data!\n");
1122         }
1123
1124         mkfs_cfg.label = label;
1125         memcpy(mkfs_cfg.fs_uuid, fs_uuid, sizeof(mkfs_cfg.fs_uuid));
1126         mkfs_cfg.num_bytes = dev_block_count;
1127         mkfs_cfg.nodesize = nodesize;
1128         mkfs_cfg.sectorsize = sectorsize;
1129         mkfs_cfg.stripesize = stripesize;
1130         mkfs_cfg.features = features;
1131
1132         ret = make_btrfs(fd, &mkfs_cfg);
1133         if (ret) {
1134                 error("error during mkfs: %s", strerror(-ret));
1135                 goto error;
1136         }
1137
1138         fs_info = open_ctree_fs_info(file, 0, 0, 0,
1139                         OPEN_CTREE_WRITES | OPEN_CTREE_FS_PARTIAL);
1140         if (!fs_info) {
1141                 error("open ctree failed");
1142                 goto error;
1143         }
1144         close(fd);
1145         fd = -1;
1146         root = fs_info->fs_root;
1147         fs_info->alloc_start = alloc_start;
1148
1149         ret = create_metadata_block_groups(root, mixed, &allocation);
1150         if (ret) {
1151                 error("failed to create default block groups: %d", ret);
1152                 goto error;
1153         }
1154
1155         trans = btrfs_start_transaction(root, 1);
1156         if (IS_ERR(trans)) {
1157                 error("failed to start transaction");
1158                 goto error;
1159         }
1160
1161         ret = create_data_block_groups(trans, root, mixed, &allocation);
1162         if (ret) {
1163                 error("failed to create default data block groups: %d", ret);
1164                 goto error;
1165         }
1166
1167         ret = make_root_dir(trans, root);
1168         if (ret) {
1169                 error("failed to setup the root directory: %d", ret);
1170                 goto error;
1171         }
1172
1173         ret = btrfs_commit_transaction(trans, root);
1174         if (ret) {
1175                 error("unable to commit transaction: %d", ret);
1176                 goto out;
1177         }
1178
1179         trans = btrfs_start_transaction(root, 1);
1180         if (IS_ERR(trans)) {
1181                 error("failed to start transaction");
1182                 goto error;
1183         }
1184
1185         if (dev_cnt == 0)
1186                 goto raid_groups;
1187
1188         while (dev_cnt-- > 0) {
1189                 file = argv[optind++];
1190
1191                 /*
1192                  * open without O_EXCL so that the problem should not
1193                  * occur by the following processing.
1194                  * (btrfs_register_one_device() fails if O_EXCL is on)
1195                  */
1196                 fd = open(file, O_RDWR);
1197                 if (fd < 0) {
1198                         error("unable to open %s: %s", file, strerror(errno));
1199                         goto error;
1200                 }
1201                 ret = btrfs_device_already_in_root(root, fd,
1202                                                    BTRFS_SUPER_INFO_OFFSET);
1203                 if (ret) {
1204                         error("skipping duplicate device %s in the filesystem",
1205                                 file);
1206                         close(fd);
1207                         continue;
1208                 }
1209                 ret = btrfs_prepare_device(fd, file, &dev_block_count,
1210                                 block_count,
1211                                 (verbose ? PREP_DEVICE_VERBOSE : 0) |
1212                                 (zero_end ? PREP_DEVICE_ZERO_END : 0) |
1213                                 (discard ? PREP_DEVICE_DISCARD : 0));
1214                 if (ret) {
1215                         goto error;
1216                 }
1217
1218                 ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
1219                                         sectorsize, sectorsize, sectorsize);
1220                 if (ret) {
1221                         error("unable to add %s to filesystem: %d", file, ret);
1222                         goto out;
1223                 }
1224                 if (verbose >= 2) {
1225                         struct btrfs_device *device;
1226
1227                         device = container_of(fs_info->fs_devices->devices.next,
1228                                         struct btrfs_device, dev_list);
1229                         printf("adding device %s id %llu\n", file,
1230                                 (unsigned long long)device->devid);
1231                 }
1232         }
1233
1234 raid_groups:
1235         if (!source_dir_set) {
1236                 ret = create_raid_groups(trans, root, data_profile,
1237                                  metadata_profile, mixed, &allocation);
1238                 if (ret) {
1239                         error("unable to create raid groups: %d", ret);
1240                         goto out;
1241                 }
1242         }
1243
1244         ret = create_tree(trans, root, BTRFS_DATA_RELOC_TREE_OBJECTID);
1245         if (ret) {
1246                 error("unable to create data reloc tree: %d", ret);
1247                 goto out;
1248         }
1249
1250         ret = btrfs_commit_transaction(trans, root);
1251         if (ret) {
1252                 error("unable to commit transaction: %d", ret);
1253                 goto out;
1254         }
1255
1256         if (source_dir_set) {
1257                 trans = btrfs_start_transaction(root, 1);
1258                 BUG_ON(IS_ERR(trans));
1259                 ret = create_chunks(trans, root,
1260                                     num_of_meta_chunks, size_of_data,
1261                                     &allocation);
1262                 if (ret) {
1263                         error("unable to create chunks: %d", ret);
1264                         goto out;
1265                 }
1266                 ret = btrfs_commit_transaction(trans, root);
1267                 if (ret) {
1268                         error("transaction commit failed: %d", ret);
1269                         goto out;
1270                 }
1271
1272                 ret = btrfs_mkfs_fill_dir(source_dir, root, verbose);
1273                 if (ret) {
1274                         error("error wihle filling filesystem: %d", ret);
1275                         goto out;
1276                 }
1277         }
1278         ret = cleanup_temp_chunks(fs_info, &allocation, data_profile,
1279                                   metadata_profile, metadata_profile);
1280         if (ret < 0) {
1281                 error("failed to cleanup temporary chunks: %d", ret);
1282                 goto out;
1283         }
1284
1285         if (verbose) {
1286                 char features_buf[64];
1287
1288                 printf("Label:              %s\n", label);
1289                 printf("UUID:               %s\n", mkfs_cfg.fs_uuid);
1290                 printf("Node size:          %u\n", nodesize);
1291                 printf("Sector size:        %u\n", sectorsize);
1292                 printf("Filesystem size:    %s\n",
1293                         pretty_size(btrfs_super_total_bytes(fs_info->super_copy)));
1294                 printf("Block group profiles:\n");
1295                 if (allocation.data)
1296                         printf("  Data:             %-8s %16s\n",
1297                                 btrfs_group_profile_str(data_profile),
1298                                 pretty_size(allocation.data));
1299                 if (allocation.metadata)
1300                         printf("  Metadata:         %-8s %16s\n",
1301                                 btrfs_group_profile_str(metadata_profile),
1302                                 pretty_size(allocation.metadata));
1303                 if (allocation.mixed)
1304                         printf("  Data+Metadata:    %-8s %16s\n",
1305                                 btrfs_group_profile_str(data_profile),
1306                                 pretty_size(allocation.mixed));
1307                 printf("  System:           %-8s %16s\n",
1308                         btrfs_group_profile_str(metadata_profile),
1309                         pretty_size(allocation.system));
1310                 printf("SSD detected:       %s\n", ssd ? "yes" : "no");
1311                 btrfs_parse_features_to_string(features_buf, features);
1312                 printf("Incompat features:  %s", features_buf);
1313                 printf("\n");
1314
1315                 list_all_devices(root);
1316         }
1317
1318         /*
1319          * The filesystem is now fully set up, commit the remaining changes and
1320          * fix the signature as the last step before closing the devices.
1321          */
1322         fs_info->finalize_on_close = 1;
1323 out:
1324         close_ret = close_ctree(root);
1325
1326         if (!close_ret) {
1327                 optind = saved_optind;
1328                 dev_cnt = argc - optind;
1329                 while (dev_cnt-- > 0) {
1330                         file = argv[optind++];
1331                         if (is_block_device(file) == 1)
1332                                 btrfs_register_one_device(file);
1333                 }
1334         }
1335
1336         btrfs_close_all_devices();
1337         free(label);
1338
1339         return !!ret;
1340 error:
1341         if (fd > 0)
1342                 close(fd);
1343
1344         free(label);
1345         exit(1);
1346 success:
1347         exit(0);
1348 }