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.
21 #include <sys/ioctl.h>
23 #include <uuid/uuid.h>
26 #include "kerncompat.h"
35 #include "btrfslabel.h"
37 static const char * const filesystem_cmd_group_usage[] = {
38 "btrfs filesystem [<group>] <command> [<args>]",
42 static const char * const cmd_df_usage[] = {
43 "btrfs filesystem df <path>",
44 "Show space usage information for a mount point",
48 static int cmd_df(int argc, char **argv)
50 struct btrfs_ioctl_space_args *sargs;
57 if (check_argc_exact(argc, 2))
62 fd = open_file_or_dir(path);
64 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
68 sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
72 sargs->space_slots = 0;
73 sargs->total_spaces = 0;
75 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
78 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
83 if (!sargs->total_spaces)
86 count = sargs->total_spaces;
88 sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
89 (count * sizeof(struct btrfs_ioctl_space_info)));
93 sargs->space_slots = count;
94 sargs->total_spaces = 0;
96 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
99 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
106 for (i = 0; i < sargs->total_spaces; i++) {
107 char description[80];
111 u64 flags = sargs->spaces[i].flags;
113 memset(description, 0, 80);
115 if (flags & BTRFS_BLOCK_GROUP_DATA) {
116 if (flags & BTRFS_BLOCK_GROUP_METADATA) {
117 snprintf(description, 14, "%s",
121 snprintf(description, 5, "%s", "Data");
124 } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
125 snprintf(description, 7, "%s", "System");
127 } else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
128 snprintf(description, 9, "%s", "Metadata");
132 if (flags & BTRFS_BLOCK_GROUP_RAID0) {
133 snprintf(description+written, 8, "%s", ", RAID0");
135 } else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
136 snprintf(description+written, 8, "%s", ", RAID1");
138 } else if (flags & BTRFS_BLOCK_GROUP_DUP) {
139 snprintf(description+written, 6, "%s", ", DUP");
141 } else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
142 snprintf(description+written, 9, "%s", ", RAID10");
146 total_bytes = pretty_sizes(sargs->spaces[i].total_bytes);
147 used_bytes = pretty_sizes(sargs->spaces[i].used_bytes);
148 printf("%s: total=%s, used=%s\n", description, total_bytes,
156 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
158 struct list_head *cur;
159 struct btrfs_device *device;
161 list_for_each(cur, &fs_devices->devices) {
162 device = list_entry(cur, struct btrfs_device, dev_list);
163 if ((device->label && strcmp(device->label, search) == 0) ||
164 strcmp(device->name, search) == 0)
170 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
173 struct list_head *cur;
174 struct btrfs_device *device;
175 char *super_bytes_used;
179 uuid_unparse(fs_devices->fsid, uuidbuf);
180 device = list_entry(fs_devices->devices.next, struct btrfs_device,
182 if (device->label && device->label[0])
183 printf("Label: '%s' ", device->label);
185 printf("Label: none ");
187 super_bytes_used = pretty_sizes(device->super_bytes_used);
189 total = device->total_devs;
190 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
191 (unsigned long long)total, super_bytes_used);
193 free(super_bytes_used);
195 list_for_each(cur, &fs_devices->devices) {
198 device = list_entry(cur, struct btrfs_device, dev_list);
199 total_bytes = pretty_sizes(device->total_bytes);
200 bytes_used = pretty_sizes(device->bytes_used);
201 printf("\tdevid %4llu size %s used %s path %s\n",
202 (unsigned long long)device->devid,
203 total_bytes, bytes_used, device->name);
208 if (devs_found < total) {
209 printf("\t*** Some devices missing\n");
214 static const char * const cmd_show_usage[] = {
215 "btrfs filesystem show [--all-devices] [<uuid>|<label>]",
216 "Show the structure of a filesystem",
217 "If no argument is given, structure of all present filesystems is shown.",
221 static int cmd_show(int argc, char **argv)
223 struct list_head *all_uuids;
224 struct btrfs_fs_devices *fs_devices;
225 struct list_head *cur_uuid;
231 if( argc > 1 && !strcmp(argv[1],"--all-devices")){
236 if (check_argc_max(argc, searchstart + 1))
237 usage(cmd_show_usage);
240 ret = btrfs_scan_block_devices(0);
242 ret = btrfs_scan_one_dir("/dev", 0);
245 fprintf(stderr, "ERROR: error %d while scanning\n", ret);
249 if(searchstart < argc)
250 search = argv[searchstart];
252 all_uuids = btrfs_scanned_uuids();
253 list_for_each(cur_uuid, all_uuids) {
254 fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
256 if (search && uuid_search(fs_devices, search) == 0)
258 print_one_uuid(fs_devices);
260 printf("%s\n", BTRFS_BUILD_VERSION);
264 static const char * const cmd_sync_usage[] = {
265 "btrfs filesystem sync <path>",
266 "Force a sync on a filesystem",
270 static int cmd_sync(int argc, char **argv)
275 if (check_argc_exact(argc, 2))
276 usage(cmd_sync_usage);
280 fd = open_file_or_dir(path);
282 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
286 printf("FSSync '%s'\n", path);
287 res = ioctl(fd, BTRFS_IOC_SYNC);
291 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
299 static u64 parse_size(char *s)
305 if (!isdigit(s[len - 1])) {
306 c = tolower(s[len - 1]);
317 fprintf(stderr, "Unknown size descriptor %c\n", c);
322 return atoll(s) * mult;
325 static int parse_compress_type(char *s)
327 if (strcmp(optarg, "zlib") == 0)
328 return BTRFS_COMPRESS_ZLIB;
329 else if (strcmp(optarg, "lzo") == 0)
330 return BTRFS_COMPRESS_LZO;
332 fprintf(stderr, "Unknown compress type %s\n", s);
337 static const char * const cmd_defrag_usage[] = {
338 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
339 "Defragment a file or a directory",
342 "-c[zlib,lzo] compress the file while defragmenting",
343 "-f flush data to disk immediately after defragmenting",
344 "-s start defragment only from byte onward",
345 "-l len defragment only up to len bytes",
346 "-t size minimal size of file to be considered for defragmenting",
350 static int cmd_defrag(int argc, char **argv)
362 struct btrfs_ioctl_defrag_range_args range;
364 int compress_type = BTRFS_COMPRESS_NONE;
368 int c = getopt(argc, argv, "vc::fs:l:t:");
374 compress_type = BTRFS_COMPRESS_ZLIB;
376 compress_type = parse_compress_type(optarg);
387 start = parse_size(optarg);
391 len = parse_size(optarg);
395 thresh = parse_size(optarg);
399 usage(cmd_defrag_usage);
403 if (check_argc_min(argc - optind, 1))
404 usage(cmd_defrag_usage);
406 memset(&range, 0, sizeof(range));
409 range.extent_thresh = thresh;
411 range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
412 range.compress_type = compress_type;
415 range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
417 for (i = optind; i < argc; i++) {
419 printf("%s\n", argv[i]);
420 fd = open_file_or_dir(argv[i]);
422 fprintf(stderr, "failed to open %s\n", argv[i]);
428 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
431 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
432 if (ret && errno == ENOTTY) {
433 fprintf(stderr, "ERROR: defrag range ioctl not "
434 "supported in this kernel, please try "
435 "without any options.\n");
442 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
443 argv[i], strerror(e));
449 printf("%s\n", BTRFS_BUILD_VERSION);
451 fprintf(stderr, "total %d failures\n", errors);
458 static const char * const cmd_resize_usage[] = {
459 "btrfs filesystem resize [+/-]<newsize>[gkm]|max <path>",
460 "Resize a filesystem",
461 "If 'max' is passed, the filesystem will occupy all available space",
466 static int cmd_resize(int argc, char **argv)
468 struct btrfs_ioctl_vol_args args;
472 if (check_argc_exact(argc, 3))
473 usage(cmd_resize_usage);
478 fd = open_file_or_dir(path);
480 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
483 len = strlen(amount);
484 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
485 fprintf(stderr, "ERROR: size value too long ('%s)\n",
490 printf("Resize '%s' of '%s'\n", path, amount);
491 strncpy(args.name, amount, BTRFS_PATH_NAME_MAX);
492 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
496 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
503 static const char * const cmd_label_usage[] = {
504 "btrfs filesystem label <device> [<newlabel>]",
505 "Get or change the label of an unmounted filesystem",
506 "With one argument, get the label of filesystem on <device>.",
507 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
511 static int cmd_label(int argc, char **argv)
513 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
514 usage(cmd_label_usage);
517 return set_label(argv[1], argv[2]);
519 return get_label(argv[1]);
522 const struct cmd_group filesystem_cmd_group = {
523 filesystem_cmd_group_usage, NULL, {
524 { "df", cmd_df, cmd_df_usage, NULL, 0 },
525 { "show", cmd_show, cmd_show_usage, NULL, 0 },
526 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
527 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
528 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
529 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
530 { "label", cmd_label, cmd_label_usage, NULL, 0 },
535 int cmd_filesystem(int argc, char **argv)
537 return handle_command_group(&filesystem_cmd_group, argc, argv);