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, *sargs_orig;
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_orig = 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",
84 if (!sargs->total_spaces) {
90 count = sargs->total_spaces;
92 sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
93 (count * sizeof(struct btrfs_ioctl_space_info)));
100 sargs->space_slots = count;
101 sargs->total_spaces = 0;
103 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
106 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
113 for (i = 0; i < sargs->total_spaces; i++) {
114 char description[80];
118 u64 flags = sargs->spaces[i].flags;
120 memset(description, 0, 80);
122 if (flags & BTRFS_BLOCK_GROUP_DATA) {
123 if (flags & BTRFS_BLOCK_GROUP_METADATA) {
124 snprintf(description, 14, "%s",
128 snprintf(description, 5, "%s", "Data");
131 } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
132 snprintf(description, 7, "%s", "System");
134 } else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
135 snprintf(description, 9, "%s", "Metadata");
139 if (flags & BTRFS_BLOCK_GROUP_RAID0) {
140 snprintf(description+written, 8, "%s", ", RAID0");
142 } else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
143 snprintf(description+written, 8, "%s", ", RAID1");
145 } else if (flags & BTRFS_BLOCK_GROUP_DUP) {
146 snprintf(description+written, 6, "%s", ", DUP");
148 } else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
149 snprintf(description+written, 9, "%s", ", RAID10");
151 } else if (flags & BTRFS_BLOCK_GROUP_RAID5) {
152 snprintf(description+written, 9, "%s", ", RAID5");
154 } else if (flags & BTRFS_BLOCK_GROUP_RAID6) {
155 snprintf(description+written, 9, "%s", ", RAID6");
159 total_bytes = pretty_sizes(sargs->spaces[i].total_bytes);
160 used_bytes = pretty_sizes(sargs->spaces[i].used_bytes);
161 printf("%s: total=%s, used=%s\n", description, total_bytes,
170 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
173 struct list_head *cur;
174 struct btrfs_device *device;
175 int search_len = strlen(search);
177 search_len = min(search_len, 37);
178 uuid_unparse(fs_devices->fsid, uuidbuf);
179 if (!strncmp(uuidbuf, search, search_len))
182 list_for_each(cur, &fs_devices->devices) {
183 device = list_entry(cur, struct btrfs_device, dev_list);
184 if ((device->label && strcmp(device->label, search) == 0) ||
185 strcmp(device->name, search) == 0)
191 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
194 struct list_head *cur;
195 struct btrfs_device *device;
196 char *super_bytes_used;
200 uuid_unparse(fs_devices->fsid, uuidbuf);
201 device = list_entry(fs_devices->devices.next, struct btrfs_device,
203 if (device->label && device->label[0])
204 printf("Label: '%s' ", device->label);
206 printf("Label: none ");
208 super_bytes_used = pretty_sizes(device->super_bytes_used);
210 total = device->total_devs;
211 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
212 (unsigned long long)total, super_bytes_used);
214 free(super_bytes_used);
216 list_for_each(cur, &fs_devices->devices) {
219 device = list_entry(cur, struct btrfs_device, dev_list);
220 total_bytes = pretty_sizes(device->total_bytes);
221 bytes_used = pretty_sizes(device->bytes_used);
222 printf("\tdevid %4llu size %s used %s path %s\n",
223 (unsigned long long)device->devid,
224 total_bytes, bytes_used, device->name);
229 if (devs_found < total) {
230 printf("\t*** Some devices missing\n");
235 static const char * const cmd_show_usage[] = {
236 "btrfs filesystem show [--all-devices] [<uuid>|<label>]",
237 "Show the structure of a filesystem",
238 "If no argument is given, structure of all present filesystems is shown.",
242 static int cmd_show(int argc, char **argv)
244 struct list_head *all_uuids;
245 struct btrfs_fs_devices *fs_devices;
246 struct list_head *cur_uuid;
252 if( argc > 1 && !strcmp(argv[1],"--all-devices")){
257 if (check_argc_max(argc, searchstart + 1))
258 usage(cmd_show_usage);
261 ret = btrfs_scan_block_devices(0);
263 ret = btrfs_scan_one_dir("/dev", 0);
266 fprintf(stderr, "ERROR: error %d while scanning\n", ret);
270 if(searchstart < argc)
271 search = argv[searchstart];
273 all_uuids = btrfs_scanned_uuids();
274 list_for_each(cur_uuid, all_uuids) {
275 fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
277 if (search && uuid_search(fs_devices, search) == 0)
279 print_one_uuid(fs_devices);
281 printf("%s\n", BTRFS_BUILD_VERSION);
285 static const char * const cmd_sync_usage[] = {
286 "btrfs filesystem sync <path>",
287 "Force a sync on a filesystem",
291 static int cmd_sync(int argc, char **argv)
296 if (check_argc_exact(argc, 2))
297 usage(cmd_sync_usage);
301 fd = open_file_or_dir(path);
303 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
307 printf("FSSync '%s'\n", path);
308 res = ioctl(fd, BTRFS_IOC_SYNC);
312 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
320 static int parse_compress_type(char *s)
322 if (strcmp(optarg, "zlib") == 0)
323 return BTRFS_COMPRESS_ZLIB;
324 else if (strcmp(optarg, "lzo") == 0)
325 return BTRFS_COMPRESS_LZO;
327 fprintf(stderr, "Unknown compress type %s\n", s);
332 static const char * const cmd_defrag_usage[] = {
333 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
334 "Defragment a file or a directory",
337 "-c[zlib,lzo] compress the file while defragmenting",
338 "-f flush data to disk immediately after defragmenting",
339 "-s start defragment only from byte onward",
340 "-l len defragment only up to len bytes",
341 "-t size minimal size of file to be considered for defragmenting",
345 static int cmd_defrag(int argc, char **argv)
357 struct btrfs_ioctl_defrag_range_args range;
359 int compress_type = BTRFS_COMPRESS_NONE;
363 int c = getopt(argc, argv, "vc::fs:l:t:");
369 compress_type = BTRFS_COMPRESS_ZLIB;
371 compress_type = parse_compress_type(optarg);
382 start = parse_size(optarg);
386 len = parse_size(optarg);
390 thresh = parse_size(optarg);
394 usage(cmd_defrag_usage);
398 if (check_argc_min(argc - optind, 1))
399 usage(cmd_defrag_usage);
401 memset(&range, 0, sizeof(range));
404 range.extent_thresh = thresh;
406 range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
407 range.compress_type = compress_type;
410 range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
412 for (i = optind; i < argc; i++) {
414 printf("%s\n", argv[i]);
415 fd = open_file_or_dir(argv[i]);
417 fprintf(stderr, "failed to open %s\n", argv[i]);
423 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
426 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
427 if (ret && errno == ENOTTY) {
428 fprintf(stderr, "ERROR: defrag range ioctl not "
429 "supported in this kernel, please try "
430 "without any options.\n");
437 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
438 argv[i], strerror(e));
444 printf("%s\n", BTRFS_BUILD_VERSION);
446 fprintf(stderr, "total %d failures\n", errors);
453 static const char * const cmd_resize_usage[] = {
454 "btrfs filesystem resize [devid:][+/-]<newsize>[gkm]|[devid:]max <path>",
455 "Resize a filesystem",
456 "If 'max' is passed, the filesystem will occupy all available space",
457 "on the device 'devid'.",
461 static int cmd_resize(int argc, char **argv)
463 struct btrfs_ioctl_vol_args args;
467 if (check_argc_exact(argc, 3))
468 usage(cmd_resize_usage);
473 len = strlen(amount);
474 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
475 fprintf(stderr, "ERROR: size value too long ('%s)\n",
480 fd = open_file_or_dir(path);
482 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
486 printf("Resize '%s' of '%s'\n", path, amount);
487 strncpy_null(args.name, amount);
488 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
492 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
499 static const char * const cmd_label_usage[] = {
500 "btrfs filesystem label [<device>|<mountpoint>] [<newlabel>]",
501 "Get or change the label of a filesystem",
502 "With one argument, get the label of filesystem on <device>.",
503 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
507 static int cmd_label(int argc, char **argv)
509 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
510 usage(cmd_label_usage);
513 return set_label(argv[1], argv[2]);
515 return get_label(argv[1]);
518 const struct cmd_group filesystem_cmd_group = {
519 filesystem_cmd_group_usage, NULL, {
520 { "df", cmd_df, cmd_df_usage, NULL, 0 },
521 { "show", cmd_show, cmd_show_usage, NULL, 0 },
522 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
523 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
524 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
525 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
526 { "label", cmd_label, cmd_label_usage, NULL, 0 },
531 int cmd_filesystem(int argc, char **argv)
533 return handle_command_group(&filesystem_cmd_group, argc, argv);