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 filesystem_cmd_group_usage[] =
38 "btrfs filesystem [<group>] <command> [<args>]";
40 static const char * const cmd_df_usage[] = {
41 "btrfs filesystem df <path>",
42 "Show space usage information for a mount point",
46 static int cmd_df(int argc, char **argv)
48 struct btrfs_ioctl_space_args *sargs;
55 if (check_argc_exact(argc, 2))
60 fd = open_file_or_dir(path);
62 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
66 sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
70 sargs->space_slots = 0;
71 sargs->total_spaces = 0;
73 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
76 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
81 if (!sargs->total_spaces)
84 count = sargs->total_spaces;
86 sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
87 (count * sizeof(struct btrfs_ioctl_space_info)));
91 sargs->space_slots = count;
92 sargs->total_spaces = 0;
94 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
97 fprintf(stderr, "ERROR: couldn't get space info on '%s' - %s\n",
104 for (i = 0; i < sargs->total_spaces; i++) {
105 char description[80];
109 u64 flags = sargs->spaces[i].flags;
111 memset(description, 0, 80);
113 if (flags & BTRFS_BLOCK_GROUP_DATA) {
114 if (flags & BTRFS_BLOCK_GROUP_METADATA) {
115 snprintf(description, 14, "%s",
119 snprintf(description, 5, "%s", "Data");
122 } else if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
123 snprintf(description, 7, "%s", "System");
125 } else if (flags & BTRFS_BLOCK_GROUP_METADATA) {
126 snprintf(description, 9, "%s", "Metadata");
130 if (flags & BTRFS_BLOCK_GROUP_RAID0) {
131 snprintf(description+written, 8, "%s", ", RAID0");
133 } else if (flags & BTRFS_BLOCK_GROUP_RAID1) {
134 snprintf(description+written, 8, "%s", ", RAID1");
136 } else if (flags & BTRFS_BLOCK_GROUP_DUP) {
137 snprintf(description+written, 6, "%s", ", DUP");
139 } else if (flags & BTRFS_BLOCK_GROUP_RAID10) {
140 snprintf(description+written, 9, "%s", ", RAID10");
144 total_bytes = pretty_sizes(sargs->spaces[i].total_bytes);
145 used_bytes = pretty_sizes(sargs->spaces[i].used_bytes);
146 printf("%s: total=%s, used=%s\n", description, total_bytes,
154 static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
156 struct list_head *cur;
157 struct btrfs_device *device;
159 list_for_each(cur, &fs_devices->devices) {
160 device = list_entry(cur, struct btrfs_device, dev_list);
161 if ((device->label && strcmp(device->label, search) == 0) ||
162 strcmp(device->name, search) == 0)
168 static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
171 struct list_head *cur;
172 struct btrfs_device *device;
173 char *super_bytes_used;
177 uuid_unparse(fs_devices->fsid, uuidbuf);
178 device = list_entry(fs_devices->devices.next, struct btrfs_device,
180 if (device->label && device->label[0])
181 printf("Label: '%s' ", device->label);
183 printf("Label: none ");
185 super_bytes_used = pretty_sizes(device->super_bytes_used);
187 total = device->total_devs;
188 printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
189 (unsigned long long)total, super_bytes_used);
191 free(super_bytes_used);
193 list_for_each(cur, &fs_devices->devices) {
196 device = list_entry(cur, struct btrfs_device, dev_list);
197 total_bytes = pretty_sizes(device->total_bytes);
198 bytes_used = pretty_sizes(device->bytes_used);
199 printf("\tdevid %4llu size %s used %s path %s\n",
200 (unsigned long long)device->devid,
201 total_bytes, bytes_used, device->name);
206 if (devs_found < total) {
207 printf("\t*** Some devices missing\n");
212 static const char * const cmd_show_usage[] = {
213 "btrfs filesystem show [--all-devices] [<uuid>|<label>]",
214 "Show the structure of a filesystem",
215 "If no argument is given, structure of all present filesystems is shown.",
219 static int cmd_show(int argc, char **argv)
221 struct list_head *all_uuids;
222 struct btrfs_fs_devices *fs_devices;
223 struct list_head *cur_uuid;
229 if( argc > 1 && !strcmp(argv[1],"--all-devices")){
234 if (check_argc_max(argc, searchstart + 1))
235 usage(cmd_show_usage);
238 ret = btrfs_scan_block_devices(0);
240 ret = btrfs_scan_one_dir("/dev", 0);
243 fprintf(stderr, "ERROR: error %d while scanning\n", ret);
247 if(searchstart < argc)
248 search = argv[searchstart];
250 all_uuids = btrfs_scanned_uuids();
251 list_for_each(cur_uuid, all_uuids) {
252 fs_devices = list_entry(cur_uuid, struct btrfs_fs_devices,
254 if (search && uuid_search(fs_devices, search) == 0)
256 print_one_uuid(fs_devices);
258 printf("%s\n", BTRFS_BUILD_VERSION);
262 static const char * const cmd_sync_usage[] = {
263 "btrfs filesystem sync <path>",
264 "Force a sync on a filesystem",
268 static int cmd_sync(int argc, char **argv)
273 if (check_argc_exact(argc, 2))
274 usage(cmd_sync_usage);
278 fd = open_file_or_dir(path);
280 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
284 printf("FSSync '%s'\n", path);
285 res = ioctl(fd, BTRFS_IOC_SYNC);
289 fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
297 static u64 parse_size(char *s)
303 if (!isdigit(s[len - 1])) {
304 c = tolower(s[len - 1]);
315 fprintf(stderr, "Unknown size descriptor %c\n", c);
320 return atoll(s) * mult;
323 static int parse_compress_type(char *s)
325 if (strcmp(optarg, "zlib") == 0)
326 return BTRFS_COMPRESS_ZLIB;
327 else if (strcmp(optarg, "lzo") == 0)
328 return BTRFS_COMPRESS_LZO;
330 fprintf(stderr, "Unknown compress type %s\n", s);
335 static const char * const cmd_defrag_usage[] = {
336 "btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
337 "Defragment a file or a directory",
340 "-c[zlib,lzo] compress the file while defragmenting",
341 "-f flush data to disk immediately after defragmenting",
342 "-s start defragment only from byte onward",
343 "-l len defragment only up to len bytes",
344 "-t size minimal size of file to be considered for defragmenting",
348 static int cmd_defrag(int argc, char **argv)
360 struct btrfs_ioctl_defrag_range_args range;
362 int compress_type = BTRFS_COMPRESS_NONE;
366 int c = getopt(argc, argv, "vc::fs:l:t:");
372 compress_type = BTRFS_COMPRESS_ZLIB;
374 compress_type = parse_compress_type(optarg);
385 start = parse_size(optarg);
389 len = parse_size(optarg);
393 thresh = parse_size(optarg);
397 usage(cmd_defrag_usage);
401 if (check_argc_min(argc - optind, 1))
402 usage(cmd_defrag_usage);
404 memset(&range, 0, sizeof(range));
407 range.extent_thresh = thresh;
409 range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
410 range.compress_type = compress_type;
413 range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
415 for (i = optind; i < argc; i++) {
417 printf("%s\n", argv[i]);
418 fd = open_file_or_dir(argv[i]);
420 fprintf(stderr, "failed to open %s\n", argv[i]);
426 ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
429 ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &range);
430 if (ret && errno == ENOTTY) {
431 fprintf(stderr, "ERROR: defrag range ioctl not "
432 "supported in this kernel, please try "
433 "without any options.\n");
440 fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
441 argv[i], strerror(e));
447 printf("%s\n", BTRFS_BUILD_VERSION);
449 fprintf(stderr, "total %d failures\n", errors);
456 static const char * const cmd_balance_usage[] = {
457 "btrfs filesystem balance <path>",
458 "Balance the chunks across the device",
462 static int cmd_balance(int argc, char **argv)
465 struct btrfs_ioctl_vol_args args;
468 if (check_argc_exact(argc, 2))
469 usage(cmd_balance_usage);
473 fdmnt = open_file_or_dir(path);
475 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
479 memset(&args, 0, sizeof(args));
480 ret = ioctl(fdmnt, BTRFS_IOC_BALANCE, &args);
484 fprintf(stderr, "ERROR: error during balancing '%s' - %s\n",
492 static const char * const cmd_resize_usage[] = {
493 "btrfs filesystem resize [+/-]<newsize>[gkm]|max <path>",
494 "Resize a filesystem",
495 "If 'max' is passed, the filesystem will occupy all available space",
500 static int cmd_resize(int argc, char **argv)
502 struct btrfs_ioctl_vol_args args;
506 if (check_argc_exact(argc, 3))
507 usage(cmd_resize_usage);
512 fd = open_file_or_dir(path);
514 fprintf(stderr, "ERROR: can't access to '%s'\n", path);
517 len = strlen(amount);
518 if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
519 fprintf(stderr, "ERROR: size value too long ('%s)\n",
524 printf("Resize '%s' of '%s'\n", path, amount);
525 strncpy(args.name, amount, BTRFS_PATH_NAME_MAX);
526 res = ioctl(fd, BTRFS_IOC_RESIZE, &args);
530 fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
537 static const char * const cmd_label_usage[] = {
538 "btrfs filesystem label <device> [<newlabel>]",
539 "Get or change the label of an unmounted filesystem",
540 "With one argument, get the label of filesystem on <device>.",
541 "If <newlabel> is passed, set the filesystem label to <newlabel>.",
545 static int cmd_label(int argc, char **argv)
547 if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
548 usage(cmd_label_usage);
551 return set_label(argv[1], argv[2]);
553 return get_label(argv[1]);
556 const struct cmd_group filesystem_cmd_group = {
557 filesystem_cmd_group_usage, NULL, {
558 { "df", cmd_df, cmd_df_usage, NULL, 0 },
559 { "show", cmd_show, cmd_show_usage, NULL, 0 },
560 { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
561 { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
562 { "balance", cmd_balance, cmd_balance_usage, NULL, 0 },
563 { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
564 { "label", cmd_label, cmd_label_usage, NULL, 0 },
569 int cmd_filesystem(int argc, char **argv)
571 return handle_command_group(&filesystem_cmd_group, argc, argv);