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 "cmds-fi-disk_usage.h"
40 #include "list_sort.h"
45 * for btrfs fi show, we maintain a hash of fsids we've already printed.
46 * This way we don't print dups if a given FS is mounted more than once.
48 #define SEEN_FSID_HASH_SIZE 256
51 u8 fsid[BTRFS_FSID_SIZE];
52 struct seen_fsid *next;
55 static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,};
57 static int is_seen_fsid(u8 *fsid)
60 int slot = hash % SEEN_FSID_HASH_SIZE;
61 struct seen_fsid *seen = seen_fsid_hash[slot];
66 static int add_seen_fsid(u8 *fsid)
69 int slot = hash % SEEN_FSID_HASH_SIZE;
70 struct seen_fsid *seen = seen_fsid_hash[slot];
71 struct seen_fsid *alloc;
77 if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
88 alloc = malloc(sizeof(*alloc));
93 memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
98 seen_fsid_hash[slot] = alloc;
103 static void free_seen_fsid(void)
106 struct seen_fsid *seen;
107 struct seen_fsid *next;
109 for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
110 seen = seen_fsid_hash[slot];
116 seen_fsid_hash[slot] = NULL;
120 static const char * const filesystem_cmd_group_usage[] = {
121 "btrfs filesystem [<group>] <command> [<args>]",
125 static const char * const cmd_filesystem_df_usage[] = {
126 "btrfs filesystem df [options] <path>",
127 "Show space usage information for a mount point",
128 "-b|--raw raw numbers in bytes",
129 "-h|--human-readable",
130 " human friendly numbers, base 1024 (default)",
131 "-H human friendly numbers, base 1000",
132 "--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
133 "--si use 1000 as a base (kB, MB, GB, TB)",
134 "-k|--kbytes show sizes in KiB, or kB with --si",
135 "-m|--mbytes show sizes in MiB, or MB with --si",
136 "-g|--gbytes show sizes in GiB, or GB with --si",
137 "-t|--tbytes show sizes in TiB, or TB with --si",
141 static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret)
145 struct btrfs_ioctl_space_args *sargs;
147 sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
151 sargs->space_slots = 0;
152 sargs->total_spaces = 0;
154 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
157 fprintf(stderr, "ERROR: couldn't get space info - %s\n",
162 /* This really should never happen */
163 if (!sargs->total_spaces) {
167 count = sargs->total_spaces;
170 sargs = malloc(sizeof(struct btrfs_ioctl_space_args) +
171 (count * sizeof(struct btrfs_ioctl_space_info)));
175 sargs->space_slots = count;
176 sargs->total_spaces = 0;
177 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
180 fprintf(stderr, "ERROR: get space info count %llu - %s\n",
189 static void print_df(struct btrfs_ioctl_space_args *sargs, unsigned unit_mode)
192 struct btrfs_ioctl_space_info *sp = sargs->spaces;
194 for (i = 0; i < sargs->total_spaces; i++, sp++) {
195 printf("%s, %s: total=%s, used=%s\n",
196 btrfs_group_type_str(sp->flags),
197 btrfs_group_profile_str(sp->flags),
198 pretty_size_mode(sp->total_bytes, unit_mode),
199 pretty_size_mode(sp->used_bytes, unit_mode));
203 static int cmd_filesystem_df(int argc, char **argv)
205 struct btrfs_ioctl_space_args *sargs = NULL;
209 DIR *dirstream = NULL;
210 unsigned unit_mode = UNITS_DEFAULT;
214 static const struct option long_options[] = {
215 { "raw", no_argument, NULL, 'b'},
216 { "kbytes", no_argument, NULL, 'k'},
217 { "mbytes", no_argument, NULL, 'm'},
218 { "gbytes", no_argument, NULL, 'g'},
219 { "tbytes", no_argument, NULL, 't'},
220 { "si", no_argument, NULL, GETOPT_VAL_SI},
221 { "iec", no_argument, NULL, GETOPT_VAL_IEC},
222 { "human-readable", no_argument, NULL,
223 GETOPT_VAL_HUMAN_READABLE},
226 int c = getopt_long(argc, argv, "bhHkmgt", long_options,
232 unit_mode = UNITS_RAW;
235 units_set_base(&unit_mode, UNITS_KBYTES);
238 units_set_base(&unit_mode, UNITS_MBYTES);
241 units_set_base(&unit_mode, UNITS_GBYTES);
244 units_set_base(&unit_mode, UNITS_TBYTES);
246 case GETOPT_VAL_HUMAN_READABLE:
248 unit_mode = UNITS_HUMAN_BINARY;
251 unit_mode = UNITS_HUMAN_DECIMAL;
254 units_set_mode(&unit_mode, UNITS_DECIMAL);
257 units_set_mode(&unit_mode, UNITS_BINARY);
260 usage(cmd_filesystem_df_usage);
264 if (check_argc_exact(argc, optind + 1))
265 usage(cmd_filesystem_df_usage);
269 fd = open_file_or_dir(path, &dirstream);
271 fprintf(stderr, "ERROR: can't access '%s'\n", path);
274 ret = get_df(fd, &sargs);
277 print_df(sargs, unit_mode);
280 fprintf(stderr, "ERROR: get_df failed %s\n", strerror(-ret));
283 close_file_or_dir(fd, dirstream);
287 static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
290 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
291 int search_len = strlen(search);
293 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
294 uuid_unparse(fsid, uuidbuf);
295 if (!strncmp(uuidbuf, search, search_len))
298 if (strlen(label) && strcmp(label, search) == 0)
301 if (strcmp(mnt, search) == 0)
307 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
309 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
310 struct list_head *cur;
311 struct btrfs_device *device;
312 int search_len = strlen(search);
314 search_len = min(search_len, BTRFS_UUID_UNPARSED_SIZE);
315 uuid_unparse(fs_devices->fsid, uuidbuf);
316 if (!strncmp(uuidbuf, search, search_len))
319 list_for_each(cur, &fs_devices->devices) {
320 device = list_entry(cur, struct btrfs_device, dev_list);
321 if ((device->label && strcmp(device->label, search) == 0) ||
322 strcmp(device->name, search) == 0)
329 * Sort devices by devid, ascending
331 static int cmp_device_id(void *priv, struct list_head *a,
334 const struct btrfs_device *da = list_entry(a, struct btrfs_device,
336 const struct btrfs_device *db = list_entry(b, struct btrfs_device,
339 return da->devid < db->devid ? -1 :
340 da->devid > db->devid ? 1 : 0;
343 static void splice_device_list(struct list_head *seed_devices,
344 struct list_head *all_devices)
346 struct btrfs_device *in_all, *next_all;
347 struct btrfs_device *in_seed, *next_seed;
349 list_for_each_entry_safe(in_all, next_all, all_devices, dev_list) {
350 list_for_each_entry_safe(in_seed, next_seed, seed_devices,
352 if (in_all->devid == in_seed->devid) {
354 * When do dev replace in a sprout fs
355 * to a dev in its seed fs, the replacing
356 * dev will reside in the sprout fs and
357 * the replaced dev will still exist
359 * So pick the latest one when showing
362 if (in_all->generation
363 < in_seed->generation) {
364 list_del(&in_all->dev_list);
366 } else if (in_all->generation
367 > in_seed->generation) {
368 list_del(&in_seed->dev_list);
376 list_splice(seed_devices, all_devices);
379 static void print_devices(struct btrfs_fs_devices *fs_devices,
382 struct btrfs_device *device;
383 struct btrfs_fs_devices *cur_fs;
384 struct list_head *all_devices;
386 all_devices = &fs_devices->devices;
387 cur_fs = fs_devices->seed;
388 /* add all devices of seed fs to the fs to be printed */
390 splice_device_list(&cur_fs->devices, all_devices);
391 cur_fs = cur_fs->seed;
394 list_sort(NULL, all_devices, cmp_device_id);
395 list_for_each_entry(device, all_devices, dev_list) {
396 printf("\tdevid %4llu size %s used %s path %s\n",
397 (unsigned long long)device->devid,
398 pretty_size(device->total_bytes),
399 pretty_size(device->bytes_used), device->name);
405 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
407 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
408 struct btrfs_device *device;
412 if (add_seen_fsid(fs_devices->fsid))
415 uuid_unparse(fs_devices->fsid, uuidbuf);
416 device = list_entry(fs_devices->devices.next, struct btrfs_device,
418 if (device->label && device->label[0])
419 printf("Label: '%s' ", device->label);
421 printf("Label: none ");
423 total = device->total_devs;
424 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
425 (unsigned long long)total,
426 pretty_size(device->super_bytes_used));
428 print_devices(fs_devices, &devs_found);
430 if (devs_found < total) {
431 printf("\t*** Some devices missing\n");
436 /* adds up all the used spaces as reported by the space info ioctl
438 static u64 calc_used_bytes(struct btrfs_ioctl_space_args *si)
442 for (i = 0; i < si->total_spaces; i++)
443 ret += si->spaces[i].used_bytes;
447 static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
448 struct btrfs_ioctl_dev_info_args *dev_info,
449 struct btrfs_ioctl_space_args *space_info,
450 char *label, char *path)
455 char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
456 struct btrfs_ioctl_dev_info_args *tmp_dev_info;
459 ret = add_seen_fsid(fs_info->fsid);
465 uuid_unparse(fs_info->fsid, uuidbuf);
466 if (label && strlen(label))
467 printf("Label: '%s' ", label);
469 printf("Label: none ");
471 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
472 fs_info->num_devices,
473 pretty_size(calc_used_bytes(space_info)));
475 for (i = 0; i < fs_info->num_devices; i++) {
476 char *canonical_path;
478 tmp_dev_info = (struct btrfs_ioctl_dev_info_args *)&dev_info[i];
480 /* Add check for missing devices even mounted */
481 fd = open((char *)tmp_dev_info->path, O_RDONLY);
487 canonical_path = canonicalize_path((char *)tmp_dev_info->path);
488 printf("\tdevid %4llu size %s used %s path %s\n",
490 pretty_size(tmp_dev_info->total_bytes),
491 pretty_size(tmp_dev_info->bytes_used),
494 free(canonical_path);
498 printf("\t*** Some devices missing\n");
503 static int btrfs_scan_kernel(void *search)
509 struct btrfs_ioctl_fs_info_args fs_info_arg;
510 struct btrfs_ioctl_dev_info_args *dev_info_arg = NULL;
511 struct btrfs_ioctl_space_args *space_info_arg = NULL;
512 char label[BTRFS_LABEL_SIZE];
514 f = setmntent("/proc/self/mounts", "r");
518 memset(label, 0, sizeof(label));
519 while ((mnt = getmntent(f)) != NULL) {
520 if (strcmp(mnt->mnt_type, "btrfs"))
522 ret = get_fs_info(mnt->mnt_dir, &fs_info_arg,
529 if (get_label_mounted(mnt->mnt_dir, label)) {
533 if (search && !match_search_item_kernel(fs_info_arg.fsid,
534 mnt->mnt_dir, label, search)) {
539 fd = open(mnt->mnt_dir, O_RDONLY);
540 if ((fd != -1) && !get_df(fd, &space_info_arg)) {
541 print_one_fs(&fs_info_arg, dev_info_arg,
542 space_info_arg, label, mnt->mnt_dir);
543 kfree(space_info_arg);
544 memset(label, 0, sizeof(label));
557 static int dev_to_fsid(char *dev, __u8 *fsid)
559 struct btrfs_super_block *disk_super;
568 fd = open(dev, O_RDONLY);
575 disk_super = (struct btrfs_super_block *)buf;
576 ret = btrfs_read_dev_super(fd, disk_super,
577 BTRFS_SUPER_INFO_OFFSET, 0);
581 memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
590 static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
592 struct btrfs_fs_devices *cur_seed, *next_seed;
593 struct btrfs_device *device;
595 while (!list_empty(&fs_devices->devices)) {
596 device = list_entry(fs_devices->devices.next,
597 struct btrfs_device, dev_list);
598 list_del(&device->dev_list);
605 /* free seed fs chain */
606 cur_seed = fs_devices->seed;
607 fs_devices->seed = NULL;
609 next_seed = cur_seed->seed;
612 cur_seed = next_seed;
615 list_del(&fs_devices->list);
619 static int copy_device(struct btrfs_device *dst,
620 struct btrfs_device *src)
622 dst->devid = src->devid;
623 memcpy(dst->uuid, src->uuid, BTRFS_UUID_SIZE);
624 if (src->name == NULL)
627 dst->name = strdup(src->name);
631 if (src->label == NULL)
634 dst->label = strdup(src->label);
640 dst->total_devs = src->total_devs;
641 dst->super_bytes_used = src->super_bytes_used;
642 dst->total_bytes = src->total_bytes;
643 dst->bytes_used = src->bytes_used;
644 dst->generation = src->generation;
649 static int copy_fs_devices(struct btrfs_fs_devices *dst,
650 struct btrfs_fs_devices *src)
652 struct btrfs_device *cur_dev, *dev_copy;
655 memcpy(dst->fsid, src->fsid, BTRFS_FSID_SIZE);
656 INIT_LIST_HEAD(&dst->devices);
659 list_for_each_entry(cur_dev, &src->devices, dev_list) {
660 dev_copy = malloc(sizeof(*dev_copy));
666 ret = copy_device(dev_copy, cur_dev);
672 list_add(&dev_copy->dev_list, &dst->devices);
673 dev_copy->fs_devices = dst;
679 static int find_and_copy_seed(struct btrfs_fs_devices *seed,
680 struct btrfs_fs_devices *copy,
681 struct list_head *fs_uuids) {
682 struct btrfs_fs_devices *cur_fs;
684 list_for_each_entry(cur_fs, fs_uuids, list)
685 if (!memcmp(seed->fsid, cur_fs->fsid, BTRFS_FSID_SIZE))
686 return copy_fs_devices(copy, cur_fs);
691 static int has_seed_devices(struct btrfs_fs_devices *fs_devices)
693 struct btrfs_device *device;
694 int dev_cnt_total, dev_cnt = 0;
696 device = list_first_entry(&fs_devices->devices, struct btrfs_device,
699 dev_cnt_total = device->total_devs;
701 list_for_each_entry(device, &fs_devices->devices, dev_list)
704 return dev_cnt_total != dev_cnt;
707 static int search_umounted_fs_uuids(struct list_head *all_uuids,
708 char *search, int *found)
710 struct btrfs_fs_devices *cur_fs, *fs_copy;
711 struct list_head *fs_uuids;
714 fs_uuids = btrfs_scanned_uuids();
717 * The fs_uuids list is global, and open_ctree_* will
718 * modify it, make a private copy here
720 list_for_each_entry(cur_fs, fs_uuids, list) {
721 /* don't bother handle all fs, if search target specified */
723 if (uuid_search(cur_fs, search) == 0)
729 /* skip all fs already shown as mounted fs */
730 if (is_seen_fsid(cur_fs->fsid))
733 fs_copy = malloc(sizeof(*fs_copy));
739 ret = copy_fs_devices(fs_copy, cur_fs);
745 list_add(&fs_copy->list, all_uuids);
752 static int map_seed_devices(struct list_head *all_uuids)
754 struct btrfs_fs_devices *cur_fs, *cur_seed;
755 struct btrfs_fs_devices *seed_copy;
756 struct btrfs_fs_devices *opened_fs;
757 struct btrfs_device *device;
758 struct btrfs_fs_info *fs_info;
759 struct list_head *fs_uuids;
762 fs_uuids = btrfs_scanned_uuids();
764 list_for_each_entry(cur_fs, all_uuids, list) {
765 device = list_first_entry(&cur_fs->devices,
766 struct btrfs_device, dev_list);
770 /* skip fs without seeds */
771 if (!has_seed_devices(cur_fs))
775 * open_ctree_* detects seed/sprout mapping
777 fs_info = open_ctree_fs_info(device->name, 0, 0,
783 * copy the seed chain under the opened fs
785 opened_fs = fs_info->fs_devices;
787 while (opened_fs->seed) {
788 seed_copy = malloc(sizeof(*seed_copy));
793 ret = find_and_copy_seed(opened_fs->seed, seed_copy,
800 cur_seed->seed = seed_copy;
802 opened_fs = opened_fs->seed;
803 cur_seed = cur_seed->seed;
806 close_ctree(fs_info->chunk_root);
812 close_ctree(fs_info->chunk_root);
816 static const char * const cmd_show_usage[] = {
817 "btrfs filesystem show [options] [<path>|<uuid>|<device>|label]",
818 "Show the structure of a filesystem",
819 "-d|--all-devices show only disks under /dev containing btrfs filesystem",
820 "-m|--mounted show only mounted btrfs",
821 "If no argument is given, structure of all present filesystems is shown.",
825 static int cmd_show(int argc, char **argv)
827 LIST_HEAD(all_uuids);
828 struct btrfs_fs_devices *fs_devices;
831 /* default, search both kernel and udev */
834 char mp[BTRFS_PATH_NAME_MAX + 1];
836 __u8 fsid[BTRFS_FSID_SIZE];
837 char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
842 static const struct option long_options[] = {
843 { "all-devices", no_argument, NULL, 'd'},
844 { "mounted", no_argument, NULL, 'm'},
847 int c = getopt_long(argc, argv, "dm", long_options,
853 where = BTRFS_SCAN_LBLKID;
856 where = BTRFS_SCAN_MOUNTED;
859 usage(cmd_show_usage);
863 if (check_argc_max(argc, optind + 1))
864 usage(cmd_show_usage);
867 search = argv[optind];
868 if (strlen(search) == 0)
869 usage(cmd_show_usage);
870 type = check_arg_type(search);
873 * For search is a device:
874 * realpath do /dev/mapper/XX => /dev/dm-X
875 * which is required by BTRFS_SCAN_DEV
876 * For search is a mountpoint:
877 * realpath do /mnt/btrfs/ => /mnt/btrfs
878 * which shall be recognized by btrfs_scan_kernel()
880 if (realpath(search, path))
884 * Needs special handling if input arg is block dev And if
885 * input arg is mount-point just print it right away
887 if (type == BTRFS_ARG_BLKDEV && where != BTRFS_SCAN_LBLKID) {
888 ret = get_btrfs_mount(search, mp, sizeof(mp));
890 /* given block dev is mounted */
892 type = BTRFS_ARG_MNTPOINT;
894 ret = dev_to_fsid(search, fsid);
897 "ERROR: No btrfs on %s\n",
901 uuid_unparse(fsid, uuid_buf);
903 type = BTRFS_ARG_UUID;
909 if (where == BTRFS_SCAN_LBLKID)
912 /* show mounted btrfs */
913 ret = btrfs_scan_kernel(search);
914 if (search && !ret) {
915 /* since search is found we are done */
919 /* shows mounted only */
920 if (where == BTRFS_SCAN_MOUNTED)
924 ret = btrfs_scan_lblkid();
927 fprintf(stderr, "ERROR: %d while scanning\n", ret);
931 ret = search_umounted_fs_uuids(&all_uuids, search, &found);
934 "ERROR: %d while searching target device\n", ret);
939 * The seed/sprout mapping are not detected yet,
940 * do mapping build for all umounted fs
942 ret = map_seed_devices(&all_uuids);
945 "ERROR: %d while mapping seed devices\n", ret);
949 list_for_each_entry(fs_devices, &all_uuids, list)
950 print_one_uuid(fs_devices);
952 if (search && !found)
955 while (!list_empty(&all_uuids)) {
956 fs_devices = list_entry(all_uuids.next,
957 struct btrfs_fs_devices, list);
958 free_fs_devices(fs_devices);
961 printf("%s\n", BTRFS_BUILD_VERSION);
966 static const char * const cmd_sync_usage[] = {
967 "btrfs filesystem sync <path>",
968 "Force a sync on a filesystem",
972 static int cmd_sync(int argc, char **argv)
976 DIR *dirstream = NULL;
978 if (check_argc_exact(argc, 2))
979 usage(cmd_sync_usage);
983 fd = open_file_or_dir(path, &dirstream);
985 fprintf(stderr, "ERROR: can't access '%s'\n", path);
989 printf("FSSync '%s'\n", path);
990 res = ioctl(fd, BTRFS_IOC_SYNC);
992 close_file_or_dir(fd, dirstream);
994 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
1002 static int parse_compress_type(char *s)
1004 if (strcmp(optarg, "zlib") == 0)
1005 return BTRFS_COMPRESS_ZLIB;
1006 else if (strcmp(optarg, "lzo") == 0)
1007 return BTRFS_COMPRESS_LZO;
1009 fprintf(stderr, "Unknown compress type %s\n", s);
1014 static const char * const cmd_defrag_usage[] = {
1015 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
1016 "Defragment a file or a directory",
1019 "-r defragment files recursively",
1020 "-c[zlib,lzo] compress the file while defragmenting",
1021 "-f flush data to disk immediately after defragmenting",
1022 "-s start defragment only from byte onward",
1023 "-l len defragment only up to len bytes",
1024 "-t size minimal size of file to be considered for defragmenting",
1028 static int do_defrag(int fd, int fancy_ioctl,
1029 struct btrfs_ioctl_defrag_range_args *range)
1034 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
1036 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, range);
1041 static int defrag_global_fancy_ioctl;
1042 static struct btrfs_ioctl_defrag_range_args defrag_global_range;
1043 static int defrag_global_verbose;
1044 static int defrag_global_errors;
1045 static int defrag_callback(const char *fpath, const struct stat *sb,
1046 int typeflag, struct FTW *ftwbuf)
1052 if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) {
1053 if (defrag_global_verbose)
1054 printf("%s\n", fpath);
1055 fd = open(fpath, O_RDWR);
1059 ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range);
1062 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1063 fprintf(stderr, "ERROR: defrag range ioctl not "
1064 "supported in this kernel, please try "
1065 "without any options.\n");
1066 defrag_global_errors++;
1075 fprintf(stderr, "ERROR: defrag failed on %s - %s\n", fpath, strerror(e));
1076 defrag_global_errors++;
1080 static int cmd_defrag(int argc, char **argv)
1090 struct btrfs_ioctl_defrag_range_args range;
1092 int compress_type = BTRFS_COMPRESS_NONE;
1095 defrag_global_errors = 0;
1096 defrag_global_verbose = 0;
1097 defrag_global_errors = 0;
1098 defrag_global_fancy_ioctl = 0;
1101 int c = getopt(argc, argv, "vrc::fs:l:t:");
1107 compress_type = BTRFS_COMPRESS_ZLIB;
1109 compress_type = parse_compress_type(optarg);
1110 defrag_global_fancy_ioctl = 1;
1114 defrag_global_fancy_ioctl = 1;
1117 defrag_global_verbose = 1;
1120 start = parse_size(optarg);
1121 defrag_global_fancy_ioctl = 1;
1124 len = parse_size(optarg);
1125 defrag_global_fancy_ioctl = 1;
1128 thresh = parse_size(optarg);
1129 defrag_global_fancy_ioctl = 1;
1135 usage(cmd_defrag_usage);
1139 if (check_argc_min(argc - optind, 1))
1140 usage(cmd_defrag_usage);
1142 memset(&defrag_global_range, 0, sizeof(range));
1143 defrag_global_range.start = start;
1144 defrag_global_range.len = len;
1145 defrag_global_range.extent_thresh = thresh;
1146 if (compress_type) {
1147 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
1148 defrag_global_range.compress_type = compress_type;
1151 defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
1153 for (i = optind; i < argc; i++) {
1157 fd = open_file_or_dir(argv[i], &dirstream);
1159 fprintf(stderr, "ERROR: failed to open %s - %s\n", argv[i],
1161 defrag_global_errors++;
1162 close_file_or_dir(fd, dirstream);
1165 if (fstat(fd, &st)) {
1166 fprintf(stderr, "ERROR: failed to stat %s - %s\n",
1167 argv[i], strerror(errno));
1168 defrag_global_errors++;
1169 close_file_or_dir(fd, dirstream);
1172 if (!(S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) {
1174 "ERROR: %s is not a directory or a regular file\n",
1176 defrag_global_errors++;
1177 close_file_or_dir(fd, dirstream);
1181 if (S_ISDIR(st.st_mode)) {
1182 ret = nftw(argv[i], defrag_callback, 10,
1183 FTW_MOUNT | FTW_PHYS);
1186 /* errors are handled in the callback */
1189 if (defrag_global_verbose)
1190 printf("%s\n", argv[i]);
1191 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1192 &defrag_global_range);
1196 if (defrag_global_verbose)
1197 printf("%s\n", argv[i]);
1198 ret = do_defrag(fd, defrag_global_fancy_ioctl,
1199 &defrag_global_range);
1202 close_file_or_dir(fd, dirstream);
1203 if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
1204 fprintf(stderr, "ERROR: defrag range ioctl not "
1205 "supported in this kernel, please try "
1206 "without any options.\n");
1207 defrag_global_errors++;
1211 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
1212 argv[i], strerror(e));
1213 defrag_global_errors++;
1216 if (defrag_global_verbose)
1217 printf("%s\n", BTRFS_BUILD_VERSION);
1218 if (defrag_global_errors)
1219 fprintf(stderr, "total %d failures\n", defrag_global_errors);
1221 return !!defrag_global_errors;
1224 static const char * const cmd_resize_usage[] = {
1225 "btrfs filesystem resize [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>",
1226 "Resize a filesystem",
1227 "If 'max' is passed, the filesystem will occupy all available space",
1228 "on the device 'devid'.",
1229 "[kK] means KiB, which denotes 1KiB = 1024B, 1MiB = 1024KiB, etc.",
1233 static int cmd_resize(int argc, char **argv)
1235 struct btrfs_ioctl_vol_args args;
1236 int fd, res, len, e;
1237 char *amount, *path;
1238 DIR *dirstream = NULL;
1240 if (check_argc_exact(argc, 3))
1241 usage(cmd_resize_usage);
1246 len = strlen(amount);
1247 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
1248 fprintf(stderr, "ERROR: size value too long ('%s)\n",
1253 fd = open_file_or_dir(path, &dirstream);
1255 fprintf(stderr, "ERROR: can't access '%s'\n", path);
1259 printf("Resize '%s' of '%s'\n", path, amount);
1260 strncpy_null(args.name, amount);
1261 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
1263 close_file_or_dir(fd, dirstream);
1265 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
1272 static const char * const cmd_label_usage[] = {
1273 "btrfs filesystem label [<device>|<mount_point>] [<newlabel>]",
1274 "Get or change the label of a filesystem",
1275 "With one argument, get the label of filesystem on <device>.",
1276 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
1280 static int cmd_label(int argc, char **argv)
1282 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
1283 usage(cmd_label_usage);
1286 return set_label(argv[1], argv[2]);
1288 char label[BTRFS_LABEL_SIZE];
1291 ret = get_label(argv[1], label);
1293 fprintf(stdout, "%s\n", label);
1299 const struct cmd_group filesystem_cmd_group = {
1300 filesystem_cmd_group_usage, NULL, {
1301 { "df", cmd_filesystem_df, cmd_filesystem_df_usage, NULL, 0 },
1302 { "show", cmd_show, cmd_show_usage, NULL, 0 },
1303 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
1304 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
1305 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
1306 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
1307 { "label", cmd_label, cmd_label_usage, NULL, 0 },
1308 { "usage", cmd_filesystem_usage,
1309 cmd_filesystem_usage_usage, NULL, 0 },
1315 int cmd_filesystem(int argc, char **argv)
1317 return handle_command_group(&filesystem_cmd_group, argc, argv);