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",
84 if (!sargs->total_spaces) {
89 count = sargs->total_spaces;
91 sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
92 (count * sizeof(struct btrfs_ioctl_space_info)));
98 sargs->space_slots = count;
99 sargs->total_spaces = 0;
101 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
104 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
111 for (i = 0; i < sargs->total_spaces; i++) {
112 char description[80];
116 u64 flags = sargs->spaces[i].flags;
118 memset(description, 0, 80);
120 if (flags & BTRFS_BLOCK_GROUP_DATA) {
121 if (flags & BTRFS_BLOCK_GROUP_METADATA) {
122 snprintf(description, 14, "%s",
126 snprintf(description, 5, "%s", "Data");
129 } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
130 snprintf(description, 7, "%s", "System");
132 } else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
133 snprintf(description, 9, "%s", "Metadata");
137 if (flags & BTRFS_BLOCK_GROUP_RAID0) {
138 snprintf(description+written, 8, "%s", ", RAID0");
140 } else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
141 snprintf(description+written, 8, "%s", ", RAID1");
143 } else if (flags & BTRFS_BLOCK_GROUP_DUP) {
144 snprintf(description+written, 6, "%s", ", DUP");
146 } else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
147 snprintf(description+written, 9, "%s", ", RAID10");
151 total_bytes = pretty_sizes(sargs->spaces[i].total_bytes);
152 used_bytes = pretty_sizes(sargs->spaces[i].used_bytes);
153 printf("%s: total=%s, used=%s\n", description, total_bytes,
162 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
165 struct list_head *cur;
166 struct btrfs_device *device;
167 int search_len = strlen(search);
169 search_len = min(search_len, 37);
170 uuid_unparse(fs_devices->fsid, uuidbuf);
171 if (!strncmp(uuidbuf, search, search_len))
174 list_for_each(cur, &fs_devices->devices) {
175 device = list_entry(cur, struct btrfs_device, dev_list);
176 if ((device->label && strcmp(device->label, search) == 0) ||
177 strcmp(device->name, search) == 0)
183 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
186 struct list_head *cur;
187 struct btrfs_device *device;
188 char *super_bytes_used;
192 uuid_unparse(fs_devices->fsid, uuidbuf);
193 device = list_entry(fs_devices->devices.next, struct btrfs_device,
195 if (device->label && device->label[0])
196 printf("Label: '%s' ", device->label);
198 printf("Label: none ");
200 super_bytes_used = pretty_sizes(device->super_bytes_used);
202 total = device->total_devs;
203 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
204 (unsigned long long)total, super_bytes_used);
206 free(super_bytes_used);
208 list_for_each(cur, &fs_devices->devices) {
211 device = list_entry(cur, struct btrfs_device, dev_list);
212 total_bytes = pretty_sizes(device->total_bytes);
213 bytes_used = pretty_sizes(device->bytes_used);
214 printf("\tdevid %4llu size %s used %s path %s\n",
215 (unsigned long long)device->devid,
216 total_bytes, bytes_used, device->name);
221 if (devs_found < total) {
222 printf("\t*** Some devices missing\n");
227 static const char * const cmd_show_usage[] = {
228 "btrfs filesystem show [--all-devices] [<uuid>|<label>]",
229 "Show the structure of a filesystem",
230 "If no argument is given, structure of all present filesystems is shown.",
234 static int cmd_show(int argc, char **argv)
236 struct list_head *all_uuids;
237 struct btrfs_fs_devices *fs_devices;
238 struct list_head *cur_uuid;
244 if( argc > 1 && !strcmp(argv[1],"--all-devices")){
249 if (check_argc_max(argc, searchstart + 1))
250 usage(cmd_show_usage);
253 ret = btrfs_scan_block_devices(0);
255 ret = btrfs_scan_one_dir("/dev", 0);
258 fprintf(stderr, "ERROR: error %d while scanning\n", ret);
262 if(searchstart < argc)
263 search = argv[searchstart];
265 all_uuids = btrfs_scanned_uuids();
266 list_for_each(cur_uuid, all_uuids) {
267 fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
269 if (search && uuid_search(fs_devices, search) == 0)
271 print_one_uuid(fs_devices);
273 printf("%s\n", BTRFS_BUILD_VERSION);
277 static const char * const cmd_sync_usage[] = {
278 "btrfs filesystem sync <path>",
279 "Force a sync on a filesystem",
283 static int cmd_sync(int argc, char **argv)
288 if (check_argc_exact(argc, 2))
289 usage(cmd_sync_usage);
293 fd = open_file_or_dir(path);
295 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
299 printf("FSSync '%s'\n", path);
300 res = ioctl(fd, BTRFS_IOC_SYNC);
304 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
312 static u64 parse_size(char *s)
318 if (!isdigit(s[len - 1])) {
319 c = tolower(s[len - 1]);
330 fprintf(stderr, "Unknown size descriptor %c\n", c);
335 return atoll(s) * mult;
338 static int parse_compress_type(char *s)
340 if (strcmp(optarg, "zlib") == 0)
341 return BTRFS_COMPRESS_ZLIB;
342 else if (strcmp(optarg, "lzo") == 0)
343 return BTRFS_COMPRESS_LZO;
345 fprintf(stderr, "Unknown compress type %s\n", s);
350 static const char * const cmd_defrag_usage[] = {
351 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
352 "Defragment a file or a directory",
355 "-c[zlib,lzo] compress the file while defragmenting",
356 "-f flush data to disk immediately after defragmenting",
357 "-s start defragment only from byte onward",
358 "-l len defragment only up to len bytes",
359 "-t size minimal size of file to be considered for defragmenting",
363 static int cmd_defrag(int argc, char **argv)
375 struct btrfs_ioctl_defrag_range_args range;
377 int compress_type = BTRFS_COMPRESS_NONE;
381 int c = getopt(argc, argv, "vc::fs:l:t:");
387 compress_type = BTRFS_COMPRESS_ZLIB;
389 compress_type = parse_compress_type(optarg);
400 start = parse_size(optarg);
404 len = parse_size(optarg);
408 thresh = parse_size(optarg);
412 usage(cmd_defrag_usage);
416 if (check_argc_min(argc - optind, 1))
417 usage(cmd_defrag_usage);
419 memset(&range, 0, sizeof(range));
422 range.extent_thresh = thresh;
424 range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
425 range.compress_type = compress_type;
428 range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
430 for (i = optind; i < argc; i++) {
432 printf("%s\n", argv[i]);
433 fd = open_file_or_dir(argv[i]);
435 fprintf(stderr, "failed to open %s\n", argv[i]);
441 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
444 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
445 if (ret && errno == ENOTTY) {
446 fprintf(stderr, "ERROR: defrag range ioctl not "
447 "supported in this kernel, please try "
448 "without any options.\n");
455 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
456 argv[i], strerror(e));
462 printf("%s\n", BTRFS_BUILD_VERSION);
464 fprintf(stderr, "total %d failures\n", errors);
471 static const char * const cmd_resize_usage[] = {
472 "btrfs filesystem resize [devid:][+/-]<newsize>[gkm]|[devid:]max <path>",
473 "Resize a filesystem",
474 "If 'max' is passed, the filesystem will occupy all available space",
475 "on the device 'devid'.",
479 static int cmd_resize(int argc, char **argv)
481 struct btrfs_ioctl_vol_args args;
485 if (check_argc_exact(argc, 3))
486 usage(cmd_resize_usage);
491 fd = open_file_or_dir(path);
493 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
496 len = strlen(amount);
497 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
498 fprintf(stderr, "ERROR: size value too long ('%s)\n",
503 printf("Resize '%s' of '%s'\n", path, amount);
504 strncpy(args.name, amount, BTRFS_PATH_NAME_MAX);
505 args.name[BTRFS_PATH_NAME_MAX-1] = 0;
506 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
510 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
517 static const char * const cmd_label_usage[] = {
518 "btrfs filesystem label <device> [<newlabel>]",
519 "Get or change the label of an unmounted filesystem",
520 "With one argument, get the label of filesystem on <device>.",
521 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
525 static int cmd_label(int argc, char **argv)
527 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
528 usage(cmd_label_usage);
531 return set_label(argv[1], argv[2]);
533 return get_label(argv[1]);
536 const struct cmd_group filesystem_cmd_group = {
537 filesystem_cmd_group_usage, NULL, {
538 { "df", cmd_df, cmd_df_usage, NULL, 0 },
539 { "show", cmd_show, cmd_show_usage, NULL, 0 },
540 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
541 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
542 { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
543 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
544 { "label", cmd_label, cmd_label_usage, NULL, 0 },
549 int cmd_filesystem(int argc, char **argv)
551 return handle_command_group(&filesystem_cmd_group, argc, argv);