2 * This program is free software; you can redistribute it and/or
3 * modify it under the terms of the GNU General Public
4 * License v2 as published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
9 * General Public License for more details.
11 * You should have received a copy of the GNU General Public
12 * License along with this program; if not, write to the
13 * Free Software Foundation, Inc., 59 Temple Place - Suite 330,
14 * Boston, MA 021110-1307, USA.
17 #define _XOPEN_SOURCE 500
22 #include <sys/ioctl.h>
24 #include <uuid/uuid.h>
29 #include <linux/limits.h>
32 #include "kerncompat.h"
39 #include "list_sort.h"
44 * for btrfs fi show, we maintain a hash of fsids we've already printed.
45 * This way we don't print dups if a given FS is mounted more than once.
47 #define SEEN_FSID_HASH_SIZE 256
50 u8 fsid[BTRFS_FSID_SIZE];
51 struct seen_fsid *next;
54 static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,};
56 static int add_seen_fsid(u8 *fsid)
59 int slot = hash % SEEN_FSID_HASH_SIZE;
60 struct seen_fsid *seen = seen_fsid_hash[slot];
61 struct seen_fsid *alloc;
67 if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
78 alloc = malloc(sizeof(*alloc));
83 memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
88 seen_fsid_hash[slot] = alloc;
93 static void free_seen_fsid(void)
96 struct seen_fsid *seen;
97 struct seen_fsid *next;
99 for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
100 seen = seen_fsid_hash[slot];
106 seen_fsid_hash[slot] = NULL;
110 static const char * const filesystem_cmd_group_usage[] = {
111 "btrfs filesystem [<group>] <command> [<args>]",
115 static const char * const cmd_df_usage[] = {
116 "btrfs filesystem df [options] <path>",
117 "Show space usage information for a mount point",
118 "-b|--raw raw numbers in bytes",
119 "-h human friendly numbers, base 1024 (default)",
120 "-H human friendly numbers, base 1000",
121 "--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
122 "--si use 1000 as a base (kB, mB, gB, tB)",
123 "-k|--kbytes show sizes in KiB, or kB with --si",
124 "-m|--mbytes show sizes in MiB, or mB with --si",
125 "-g|--gbytes show sizes in GiB, or gB with --si",
126 "-t|--tbytes show sizes in TiB, or tB with --si",
130 static char *group_type_str(u64 flag)
132 u64 mask = BTRFS_BLOCK_GROUP_TYPE_MASK |
133 BTRFS_SPACE_INFO_GLOBAL_RSV;
135 switch (flag & mask) {
136 case BTRFS_BLOCK_GROUP_DATA:
138 case BTRFS_BLOCK_GROUP_SYSTEM:
140 case BTRFS_BLOCK_GROUP_METADATA:
142 case BTRFS_BLOCK_GROUP_DATA|BTRFS_BLOCK_GROUP_METADATA:
143 return "Data+Metadata";
144 case BTRFS_SPACE_INFO_GLOBAL_RSV:
145 return "GlobalReserve";
151 static char *group_profile_str(u64 flag)
153 switch (flag & BTRFS_BLOCK_GROUP_PROFILE_MASK) {
156 case BTRFS_BLOCK_GROUP_RAID0:
158 case BTRFS_BLOCK_GROUP_RAID1:
160 case BTRFS_BLOCK_GROUP_RAID5:
162 case BTRFS_BLOCK_GROUP_RAID6:
164 case BTRFS_BLOCK_GROUP_DUP:
166 case BTRFS_BLOCK_GROUP_RAID10:
173 static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret)
177 struct btrfs_ioctl_space_args *sargs;
179 sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
183 sargs->space_slots = 0;
184 sargs->total_spaces = 0;
186 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
189 fprintf(stderr, "ERROR: couldn't get space info - %s\n",
194 /* This really should never happen */
195 if (!sargs->total_spaces) {
199 count = sargs->total_spaces;
202 sargs = malloc(sizeof(struct btrfs_ioctl_space_args) +
203 (count * sizeof(struct btrfs_ioctl_space_info)));
207 sargs->space_slots = count;
208 sargs->total_spaces = 0;
209 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
212 fprintf(stderr, "ERROR: get space info count %llu - %s\n",
221 static void print_df(struct btrfs_ioctl_space_args *sargs, unsigned unit_mode)
224 struct btrfs_ioctl_space_info *sp = sargs->spaces;
226 for (i = 0; i < sargs->total_spaces; i++, sp++) {
227 printf("%s, %s: total=%s, used=%s\n",
228 group_type_str(sp->flags),
229 group_profile_str(sp->flags),
230 pretty_size_mode(sp->total_bytes, unit_mode),
231 pretty_size_mode(sp->used_bytes, unit_mode));
235 static int cmd_df(int argc, char **argv)
237 struct btrfs_ioctl_space_args *sargs = NULL;
241 DIR *dirstream = NULL;
242 unsigned unit_mode = UNITS_DEFAULT;
247 static const struct option long_options[] = {
248 { "raw", no_argument, NULL, 'b'},
249 { "kbytes", no_argument, NULL, 'k'},
250 { "mbytes", no_argument, NULL, 'm'},
251 { "gbytes", no_argument, NULL, 'g'},
252 { "tbytes", no_argument, NULL, 't'},
253 { "si", no_argument, NULL, 256},
254 { "iec", no_argument, NULL, 257},
256 int c = getopt_long(argc, argv, "bhHkmgt", long_options,
262 unit_mode = UNITS_RAW;
265 units_set_base(&unit_mode, UNITS_KBYTES);
268 units_set_base(&unit_mode, UNITS_MBYTES);
271 units_set_base(&unit_mode, UNITS_GBYTES);
274 units_set_base(&unit_mode, UNITS_TBYTES);
277 unit_mode = UNITS_HUMAN_BINARY;
280 unit_mode = UNITS_HUMAN_DECIMAL;
283 units_set_mode(&unit_mode, UNITS_DECIMAL);
286 units_set_mode(&unit_mode, UNITS_BINARY);
293 if (check_argc_max(argc, optind + 1))
298 fd = open_file_or_dir(path, &dirstream);
300 fprintf(stderr, "ERROR: can't access '%s'\n", path);
303 ret = get_df(fd, &sargs);
306 print_df(sargs, unit_mode);
309 fprintf(stderr, "ERROR: get_df failed %s\n", strerror(-ret));
312 close_file_or_dir(fd, dirstream);
316 static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
319 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
320 int search_len = strlen(search);
322 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
323 uuid_unparse(fsid, uuidbuf);
324 if (!strncmp(uuidbuf, search, search_len))
327 if (strlen(label) && strcmp(label, search) == 0)
330 if (strcmp(mnt, search) == 0)
336 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
338 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
339 struct list_head *cur;
340 struct btrfs_device *device;
341 int search_len = strlen(search);
343 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
344 uuid_unparse(fs_devices->fsid, uuidbuf);
345 if (!strncmp(uuidbuf, search, search_len))
348 list_for_each(cur, &fs_devices->devices) {
349 device = list_entry(cur, struct btrfs_device, dev_list);
350 if ((device->label && strcmp(device->label, search) == 0) ||
351 strcmp(device->name, search) == 0)
358 * Sort devices by devid, ascending
360 static int cmp_device_id(void *priv, struct list_head *a,
363 const struct btrfs_device *da = list_entry(a, struct btrfs_device,
365 const struct btrfs_device *db = list_entry(b, struct btrfs_device,
368 return da->devid < db->devid ? -1 :
369 da->devid > db->devid ? 1 : 0;
372 static void splice_device_list(struct list_head *seed_devices,
373 struct list_head *all_devices)
375 struct btrfs_device *in_all, *next_all;
376 struct btrfs_device *in_seed, *next_seed;
378 list_for_each_entry_safe(in_all, next_all, all_devices, dev_list) {
379 list_for_each_entry_safe(in_seed, next_seed, seed_devices,
381 if (in_all->devid == in_seed->devid) {
383 * When do dev replace in a sprout fs
384 * to a dev in its seed fs, the replacing
385 * dev will reside in the sprout fs and
386 * the replaced dev will still exist
388 * So pick the latest one when showing
391 if (in_all->generation
392 < in_seed->generation) {
393 list_del(&in_all->dev_list);
395 } else if (in_all->generation
396 > in_seed->generation) {
397 list_del(&in_seed->dev_list);
405 list_splice(seed_devices, all_devices);
408 static void print_devices(struct btrfs_fs_devices *fs_devices,
411 struct btrfs_device *device;
412 struct btrfs_fs_devices *cur_fs;
413 struct list_head *all_devices;
415 all_devices = &fs_devices->devices;
416 cur_fs = fs_devices->seed;
417 /* add all devices of seed fs to the fs to be printed */
419 splice_device_list(&cur_fs->devices, all_devices);
420 cur_fs = cur_fs->seed;
423 list_sort(NULL, all_devices, cmp_device_id);
424 list_for_each_entry(device, all_devices, dev_list) {
425 printf("\tdevid %4llu size %s used %s path %s\n",
426 (unsigned long long)device->devid,
427 pretty_size(device->total_bytes),
428 pretty_size(device->bytes_used), device->name);
434 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
436 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
437 struct btrfs_device *device;
441 if (add_seen_fsid(fs_devices->fsid))
444 uuid_unparse(fs_devices->fsid, uuidbuf);
445 device = list_entry(fs_devices->devices.next, struct btrfs_device,
447 if (device->label && device->label[0])
448 printf("Label: '%s' ", device->label);
450 printf("Label: none ");
452 total = device->total_devs;
453 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
454 (unsigned long long)total,
455 pretty_size(device->super_bytes_used));
457 print_devices(fs_devices, &devs_found);
459 if (devs_found < total) {
460 printf("\t*** Some devices missing\n");
465 /* adds up all the used spaces as reported by the space info ioctl
467 static u64 calc_used_bytes(struct btrfs_ioctl_space_args *si)
471 for (i = 0; i < si->total_spaces; i++)
472 ret += si->spaces[i].used_bytes;
476 static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
477 struct btrfs_ioctl_dev_info_args *dev_info,
478 struct btrfs_ioctl_space_args *space_info,
479 char *label, char *path)
484 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
485 struct btrfs_ioctl_dev_info_args *tmp_dev_info;
488 ret = add_seen_fsid(fs_info->fsid);
494 uuid_unparse(fs_info->fsid, uuidbuf);
495 if (label && strlen(label))
496 printf("Label: '%s' ", label);
498 printf("Label: none ");
500 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
501 fs_info->num_devices,
502 pretty_size(calc_used_bytes(space_info)));
504 for (i = 0; i < fs_info->num_devices; i++) {
505 tmp_dev_info = (struct btrfs_ioctl_dev_info_args *)&dev_info[i];
507 /* Add check for missing devices even mounted */
508 fd = open((char *)tmp_dev_info->path, O_RDONLY);
514 printf("\tdevid %4llu size %s used %s path %s\n",
516 pretty_size(tmp_dev_info->total_bytes),
517 pretty_size(tmp_dev_info->bytes_used),
522 printf("\t*** Some devices missing\n");
527 /* This function checks if the given input parameter is
529 * return -1: some error in the given input
530 * return 0: unknow input
531 * return 1: given input is uuid
532 * return 2: given input is path
534 static int check_arg_type(char *input)
542 if (realpath(input, path)) {
543 if (is_block_device(path) == 1)
544 return BTRFS_ARG_BLKDEV;
546 if (is_mount_point(path) == 1)
547 return BTRFS_ARG_MNTPOINT;
549 return BTRFS_ARG_UNKNOWN;
552 if (strlen(input) == (BTRFS_UUID_UNPARSED_SIZE - 1) &&
553 !uuid_parse(input, out))
554 return BTRFS_ARG_UUID;
556 return BTRFS_ARG_UNKNOWN;
559 static int btrfs_scan_kernel(void *search)
565 struct btrfs_ioctl_fs_info_args fs_info_arg;
566 struct btrfs_ioctl_dev_info_args *dev_info_arg = NULL;
567 struct btrfs_ioctl_space_args *space_info_arg = NULL;
568 char label[BTRFS_LABEL_SIZE];
570 f = setmntent("/proc/self/mounts", "r");
574 memset(label, 0, sizeof(label));
575 while ((mnt = getmntent(f)) != NULL) {
576 if (strcmp(mnt->mnt_type, "btrfs"))
578 ret = get_fs_info(mnt->mnt_dir, &fs_info_arg,
583 if (get_label_mounted(mnt->mnt_dir, label)) {
587 if (search && !match_search_item_kernel(fs_info_arg.fsid,
588 mnt->mnt_dir, label, search)) {
593 fd = open(mnt->mnt_dir, O_RDONLY);
594 if ((fd != -1) && !get_df(fd, &space_info_arg)) {
595 print_one_fs(&fs_info_arg, dev_info_arg,
596 space_info_arg, label, mnt->mnt_dir);
597 kfree(space_info_arg);
598 memset(label, 0, sizeof(label));
611 static int dev_to_fsid(char *dev, __u8 *fsid)
613 struct btrfs_super_block *disk_super;
622 fd = open(dev, O_RDONLY);
629 disk_super = (struct btrfs_super_block *)buf;
630 ret = btrfs_read_dev_super(fd, disk_super,
631 BTRFS_SUPER_INFO_OFFSET, 0);
635 memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
644 static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
646 struct btrfs_fs_devices *cur_seed, *next_seed;
647 struct btrfs_device *device;
649 while (!list_empty(&fs_devices->devices)) {
650 device = list_entry(fs_devices->devices.next,
651 struct btrfs_device, dev_list);
652 list_del(&device->dev_list);
659 /* free seed fs chain */
660 cur_seed = fs_devices->seed;
661 fs_devices->seed = NULL;
663 next_seed = cur_seed->seed;
666 cur_seed = next_seed;
669 list_del(&fs_devices->list);
673 static int copy_device(struct btrfs_device *dst,
674 struct btrfs_device *src)
676 dst->devid = src->devid;
677 memcpy(dst->uuid, src->uuid, BTRFS_UUID_SIZE);
678 if (src->name == NULL)
681 dst->name = strdup(src->name);
685 if (src->label == NULL)
688 dst->label = strdup(src->label);
694 dst->total_devs = src->total_devs;
695 dst->super_bytes_used = src->super_bytes_used;
696 dst->total_bytes = src->total_bytes;
697 dst->bytes_used = src->bytes_used;
698 dst->generation = src->generation;
703 static int copy_fs_devices(struct btrfs_fs_devices *dst,
704 struct btrfs_fs_devices *src)
706 struct btrfs_device *cur_dev, *dev_copy;
709 memcpy(dst->fsid, src->fsid, BTRFS_FSID_SIZE);
710 INIT_LIST_HEAD(&dst->devices);
713 list_for_each_entry(cur_dev, &src->devices, dev_list) {
714 dev_copy = malloc(sizeof(*dev_copy));
720 ret = copy_device(dev_copy, cur_dev);
726 list_add(&dev_copy->dev_list, &dst->devices);
727 dev_copy->fs_devices = dst;
733 static int find_and_copy_seed(struct btrfs_fs_devices *seed,
734 struct btrfs_fs_devices *copy,
735 struct list_head *fs_uuids) {
736 struct btrfs_fs_devices *cur_fs;
738 list_for_each_entry(cur_fs, fs_uuids, list)
739 if (!memcmp(seed->fsid, cur_fs->fsid, BTRFS_FSID_SIZE))
740 return copy_fs_devices(copy, cur_fs);
745 static int map_seed_devices(struct list_head *all_uuids,
746 char *search, int *found)
748 struct btrfs_fs_devices *cur_fs, *cur_seed;
749 struct btrfs_fs_devices *fs_copy, *seed_copy;
750 struct btrfs_fs_devices *opened_fs;
751 struct btrfs_device *device;
752 struct btrfs_fs_info *fs_info;
753 struct list_head *fs_uuids;
756 fs_uuids = btrfs_scanned_uuids();
759 * The fs_uuids list is global, and open_ctree_* will
760 * modify it, make a private copy here
762 list_for_each_entry(cur_fs, fs_uuids, list) {
763 /* don't bother handle all fs, if search target specified */
765 if (uuid_search(cur_fs, search) == 0)
770 fs_copy = malloc(sizeof(*fs_copy));
776 ret = copy_fs_devices(fs_copy, cur_fs);
782 list_add(&fs_copy->list, all_uuids);
785 list_for_each_entry(cur_fs, all_uuids, list) {
786 device = list_first_entry(&cur_fs->devices,
787 struct btrfs_device, dev_list);
791 * open_ctree_* detects seed/sprout mapping
793 fs_info = open_ctree_fs_info(device->name, 0, 0,
799 * copy the seed chain under the opened fs
801 opened_fs = fs_info->fs_devices;
803 while (opened_fs->seed) {
804 seed_copy = malloc(sizeof(*seed_copy));
809 ret = find_and_copy_seed(opened_fs->seed, seed_copy,
816 cur_seed->seed = seed_copy;
818 opened_fs = opened_fs->seed;
819 cur_seed = cur_seed->seed;
822 close_ctree(fs_info->chunk_root);
828 close_ctree(fs_info->chunk_root);
832 static const char * const cmd_show_usage[] = {
833 "btrfs filesystem show [options] [<path>|<uuid>|<device>|label]",
834 "Show the structure of a filesystem",
835 "-d|--all-devices show only disks under /dev containing btrfs filesystem",
836 "-m|--mounted show only mounted btrfs",
837 "If no argument is given, structure of all present filesystems is shown.",
841 static int cmd_show(int argc, char **argv)
843 LIST_HEAD(all_uuids);
844 struct btrfs_fs_devices *fs_devices;
847 /* default, search both kernel and udev */
850 char mp[BTRFS_PATH_NAME_MAX + 1];
852 __u8 fsid[BTRFS_FSID_SIZE];
853 char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
858 static struct option long_options[] = {
859 { "all-devices", no_argument, NULL, 'd'},
860 { "mounted", no_argument, NULL, 'm'},
861 { NULL, no_argument, NULL, 0 },
863 int c = getopt_long(argc, argv, "dm", long_options,
869 where = BTRFS_SCAN_LBLKID;
872 where = BTRFS_SCAN_MOUNTED;
875 usage(cmd_show_usage);
879 if (check_argc_max(argc, optind + 1))
880 usage(cmd_show_usage);
883 search = argv[optind];
884 if (strlen(search) == 0)
885 usage(cmd_show_usage);
886 type = check_arg_type(search);
888 * needs spl handling if input arg is block dev
889 * And if input arg is mount-point just print it
892 if (type == BTRFS_ARG_BLKDEV) {
893 if (where == BTRFS_SCAN_LBLKID) {
894 /* we need to do this because
895 * legacy BTRFS_SCAN_DEV
896 * provides /dev/dm-x paths
898 if (realpath(search, path))
901 ret = get_btrfs_mount(search,
904 /* given block dev is mounted*/
906 type = BTRFS_ARG_MNTPOINT;
908 ret = dev_to_fsid(search, fsid);
911 "ERROR: No btrfs on %s\n",
915 uuid_unparse(fsid, uuid_buf);
917 type = BTRFS_ARG_UUID;
924 if (where == BTRFS_SCAN_LBLKID)
927 /* show mounted btrfs */
928 ret = btrfs_scan_kernel(search);
929 if (search && !ret) {
930 /* since search is found we are done */
934 /* shows mounted only */
935 if (where == BTRFS_SCAN_MOUNTED)
939 ret = btrfs_scan_lblkid(!BTRFS_UPDATE_KERNEL);
942 fprintf(stderr, "ERROR: %d while scanning\n", ret);
947 * scan_for_btrfs() don't build seed/sprout mapping,
948 * do mapping build for each scanned fs here
950 ret = map_seed_devices(&all_uuids, search, &found);
953 "ERROR: %d while mapping seed devices\n", ret);
957 list_for_each_entry(fs_devices, &all_uuids, list)
958 print_one_uuid(fs_devices);
960 if (search && !found)
963 while (!list_empty(&all_uuids)) {
964 fs_devices = list_entry(all_uuids.next,
965 struct btrfs_fs_devices, list);
966 free_fs_devices(fs_devices);
969 printf("%s\n", BTRFS_BUILD_VERSION);
974 static const char * const cmd_sync_usage[] = {
975 "btrfs filesystem sync <path>",
976 "Force a sync on a filesystem",
980 static int cmd_sync(int argc, char **argv)
984 DIR *dirstream = NULL;
986 if (check_argc_exact(argc, 2))
987 usage(cmd_sync_usage);
991 fd = open_file_or_dir(path, &dirstream);
993 fprintf(stderr, "ERROR: can't access '%s'\n", path);
997 printf("FSSync '%s'\n", path);
998 res = ioctl(fd, BTRFS_IOC_SYNC);
1000 close_file_or_dir(fd, dirstream);
1002 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
1010 static int parse_compress_type(char *s)
1012 if (strcmp(optarg, "zlib") == 0)
1013 return BTRFS_COMPRESS_ZLIB;
1014 else if (strcmp(optarg, "lzo") == 0)
1015 return BTRFS_COMPRESS_LZO;
1017 fprintf(stderr, "Unknown compress type %s\n", s);
1022 static const char * const cmd_defrag_usage[] = {
1023 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
1024 "Defragment a file or a directory",
1027 "-r defragment files recursively",
1028 "-c[zlib,lzo] compress the file while defragmenting",
1029 "-f flush data to disk immediately after defragmenting",
1030 "-s start defragment only from byte onward",
1031 "-l len defragment only up to len bytes",
1032 "-t size minimal size of file to be considered for defragmenting",
1036 static int do_defrag(int fd, int fancy_ioctl,
1037 struct btrfs_ioctl_defrag_range_args *range)
1042 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
1044 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, range);
1049 static int defrag_global_fancy_ioctl;
1050 static struct btrfs_ioctl_defrag_range_args defrag_global_range;
1051 static int defrag_global_verbose;
1052 static int defrag_global_errors;
1053 static int defrag_callback(const char *fpath, const struct stat *sb,
1054 int typeflag, struct FTW *ftwbuf)
1060 if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) {
1061 if (defrag_global_verbose)
1062 printf("%s\n", fpath);
1063 fd = open(fpath, O_RDWR);
1067 ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range);
1070 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1071 fprintf(stderr, "ERROR: defrag range ioctl not "
1072 "supported in this kernel, please try "
1073 "without any options.\n");
1074 defrag_global_errors++;
1083 fprintf(stderr, "ERROR: defrag failed on %s - %s\n", fpath, strerror(e));
1084 defrag_global_errors++;
1088 static int cmd_defrag(int argc, char **argv)
1098 struct btrfs_ioctl_defrag_range_args range;
1100 int compress_type = BTRFS_COMPRESS_NONE;
1103 defrag_global_errors = 0;
1104 defrag_global_verbose = 0;
1105 defrag_global_errors = 0;
1106 defrag_global_fancy_ioctl = 0;
1109 int c = getopt(argc, argv, "vrc::fs:l:t:");
1115 compress_type = BTRFS_COMPRESS_ZLIB;
1117 compress_type = parse_compress_type(optarg);
1118 defrag_global_fancy_ioctl = 1;
1122 defrag_global_fancy_ioctl = 1;
1125 defrag_global_verbose = 1;
1128 start = parse_size(optarg);
1129 defrag_global_fancy_ioctl = 1;
1132 len = parse_size(optarg);
1133 defrag_global_fancy_ioctl = 1;
1136 thresh = parse_size(optarg);
1137 defrag_global_fancy_ioctl = 1;
1143 usage(cmd_defrag_usage);
1147 if (check_argc_min(argc - optind, 1))
1148 usage(cmd_defrag_usage);
1150 memset(&defrag_global_range, 0, sizeof(range));
1151 defrag_global_range.start = start;
1152 defrag_global_range.len = len;
1153 defrag_global_range.extent_thresh = thresh;
1154 if (compress_type) {
1155 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
1156 defrag_global_range.compress_type = compress_type;
1159 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
1161 for (i = optind; i < argc; i++) {
1165 fd = open_file_or_dir(argv[i], &dirstream);
1167 fprintf(stderr, "ERROR: failed to open %s - %s\n", argv[i],
1169 defrag_global_errors++;
1170 close_file_or_dir(fd, dirstream);
1173 if (fstat(fd, &st)) {
1174 fprintf(stderr, "ERROR: failed to stat %s - %s\n",
1175 argv[i], strerror(errno));
1176 defrag_global_errors++;
1177 close_file_or_dir(fd, dirstream);
1180 if (!(S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) {
1182 "ERROR: %s is not a directory or a regular file\n",
1184 defrag_global_errors++;
1185 close_file_or_dir(fd, dirstream);
1189 if (S_ISDIR(st.st_mode)) {
1190 ret = nftw(argv[i], defrag_callback, 10,
1191 FTW_MOUNT | FTW_PHYS);
1194 /* errors are handled in the callback */
1197 if (defrag_global_verbose)
1198 printf("%s\n", argv[i]);
1199 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1200 &defrag_global_range);
1204 if (defrag_global_verbose)
1205 printf("%s\n", argv[i]);
1206 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1207 &defrag_global_range);
1210 close_file_or_dir(fd, dirstream);
1211 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1212 fprintf(stderr, "ERROR: defrag range ioctl not "
1213 "supported in this kernel, please try "
1214 "without any options.\n");
1215 defrag_global_errors++;
1219 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
1220 argv[i], strerror(e));
1221 defrag_global_errors++;
1224 if (defrag_global_verbose)
1225 printf("%s\n", BTRFS_BUILD_VERSION);
1226 if (defrag_global_errors)
1227 fprintf(stderr, "total %d failures\n", defrag_global_errors);
1229 return !!defrag_global_errors;
1232 static const char * const cmd_resize_usage[] = {
1233 "btrfs filesystem resize [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>",
1234 "Resize a filesystem",
1235 "If 'max' is passed, the filesystem will occupy all available space",
1236 "on the device 'devid'.",
1237 "[kK] means KiB, which denotes 1KiB = 1024B, 1MiB = 1024KiB, etc.",
1241 static int cmd_resize(int argc, char **argv)
1243 struct btrfs_ioctl_vol_args args;
1244 int fd, res, len, e;
1245 char *amount, *path;
1246 DIR *dirstream = NULL;
1248 if (check_argc_exact(argc, 3))
1249 usage(cmd_resize_usage);
1254 len = strlen(amount);
1255 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
1256 fprintf(stderr, "ERROR: size value too long ('%s)\n",
1261 fd = open_file_or_dir(path, &dirstream);
1263 fprintf(stderr, "ERROR: can't access '%s'\n", path);
1267 printf("Resize '%s' of '%s'\n", path, amount);
1268 strncpy_null(args.name, amount);
1269 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
1271 close_file_or_dir(fd, dirstream);
1273 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
1280 static const char * const cmd_label_usage[] = {
1281 "btrfs filesystem label [<device>|<mount_point>] [<newlabel>]",
1282 "Get or change the label of a filesystem",
1283 "With one argument, get the label of filesystem on <device>.",
1284 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
1288 static int cmd_label(int argc, char **argv)
1290 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
1291 usage(cmd_label_usage);
1294 return set_label(argv[1], argv[2]);
1296 char label[BTRFS_LABEL_SIZE];
1299 ret = get_label(argv[1], label);
1301 fprintf(stdout, "%s\n", label);
1307 const struct cmd_group filesystem_cmd_group = {
1308 filesystem_cmd_group_usage, NULL, {
1309 { "df", cmd_df, cmd_df_usage, NULL, 0 },
1310 { "show", cmd_show, cmd_show_usage, NULL, 0 },
1311 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
1312 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
1313 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
1314 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
1315 { "label", cmd_label, cmd_label_usage, NULL, 0 },
1320 int cmd_filesystem(int argc, char **argv)
1322 return handle_command_group(&filesystem_cmd_group, argc, argv);