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>
28 #include "kerncompat.h"
30 #include "string-table.h"
31 #include "cmds-fi-usage.h"
39 * Add the chunk info to the chunk_info list
41 static int add_info_to_list(struct chunk_info **info_ptr,
43 struct btrfs_chunk *chunk)
46 u64 type = btrfs_stack_chunk_type(chunk);
47 u64 size = btrfs_stack_chunk_length(chunk);
48 int num_stripes = btrfs_stack_chunk_num_stripes(chunk);
51 for (j = 0 ; j < num_stripes ; j++) {
53 struct chunk_info *p = NULL;
54 struct btrfs_stripe *stripe;
57 stripe = btrfs_stripe_nr(chunk, j);
58 devid = btrfs_stack_stripe_devid(stripe);
60 for (i = 0 ; i < *info_count ; i++)
61 if ((*info_ptr)[i].type == type &&
62 (*info_ptr)[i].devid == devid &&
63 (*info_ptr)[i].num_stripes == num_stripes ) {
69 int tmp = sizeof(struct btrfs_chunk) * (*info_count + 1);
70 struct chunk_info *res = realloc(*info_ptr, tmp);
74 error("not enough memory");
79 p = res + *info_count;
85 p->num_stripes = num_stripes;
97 * Helper to sort the chunk type
99 static int cmp_chunk_block_group(u64 f1, u64 f2)
104 if ((f1 & BTRFS_BLOCK_GROUP_TYPE_MASK) ==
105 (f2 & BTRFS_BLOCK_GROUP_TYPE_MASK))
106 mask = BTRFS_BLOCK_GROUP_PROFILE_MASK;
107 else if (f2 & BTRFS_BLOCK_GROUP_SYSTEM)
109 else if (f1 & BTRFS_BLOCK_GROUP_SYSTEM)
112 mask = BTRFS_BLOCK_GROUP_TYPE_MASK;
114 if ((f1 & mask) > (f2 & mask))
116 else if ((f1 & mask) < (f2 & mask))
123 * Helper to sort the chunk
125 static int cmp_chunk_info(const void *a, const void *b)
127 return cmp_chunk_block_group(
128 ((struct chunk_info *)a)->type,
129 ((struct chunk_info *)b)->type);
132 static int load_chunk_info(int fd, struct chunk_info **info_ptr, int *info_count)
135 struct btrfs_ioctl_search_args args;
136 struct btrfs_ioctl_search_key *sk = &args.key;
137 struct btrfs_ioctl_search_header *sh;
138 unsigned long off = 0;
141 memset(&args, 0, sizeof(args));
144 * there may be more than one ROOT_ITEM key if there are
145 * snapshots pending deletion, we have to loop through
148 sk->tree_id = BTRFS_CHUNK_TREE_OBJECTID;
150 sk->min_objectid = 0;
151 sk->max_objectid = (u64)-1;
153 sk->min_type = (u8)-1;
155 sk->max_offset = (u64)-1;
157 sk->max_transid = (u64)-1;
161 ret = ioctl(fd, BTRFS_IOC_TREE_SEARCH, &args);
167 error("cannot look up chunk tree info: %m");
170 /* the ioctl returns the number of item it found in nr_items */
172 if (sk->nr_items == 0)
176 for (i = 0; i < sk->nr_items; i++) {
177 struct btrfs_chunk *item;
178 sh = (struct btrfs_ioctl_search_header *)(args.buf +
182 item = (struct btrfs_chunk *)(args.buf + off);
184 ret = add_info_to_list(info_ptr, info_count, item);
190 off += btrfs_search_header_len(sh);
192 sk->min_objectid = btrfs_search_header_objectid(sh);
193 sk->min_type = btrfs_search_header_type(sh);
194 sk->min_offset = btrfs_search_header_offset(sh)+1;
197 if (!sk->min_offset) /* overflow */
207 if (!sk->min_objectid)
211 qsort(*info_ptr, *info_count, sizeof(struct chunk_info),
218 * Helper to sort the struct btrfs_ioctl_space_info
220 static int cmp_btrfs_ioctl_space_info(const void *a, const void *b)
222 return cmp_chunk_block_group(
223 ((struct btrfs_ioctl_space_info *)a)->flags,
224 ((struct btrfs_ioctl_space_info *)b)->flags);
228 * This function load all the information about the space usage
230 static struct btrfs_ioctl_space_args *load_space_info(int fd, char *path)
232 struct btrfs_ioctl_space_args *sargs = NULL, *sargs_orig = NULL;
235 sargs_orig = sargs = calloc(1, sizeof(struct btrfs_ioctl_space_args));
237 error("not enough memory");
241 sargs->space_slots = 0;
242 sargs->total_spaces = 0;
244 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
246 error("cannot get space info on '%s': %m", path);
250 if (!sargs->total_spaces) {
252 printf("No chunks found\n");
256 count = sargs->total_spaces;
258 sargs = realloc(sargs, sizeof(struct btrfs_ioctl_space_args) +
259 (count * sizeof(struct btrfs_ioctl_space_info)));
262 error("not enough memory");
266 sargs->space_slots = count;
267 sargs->total_spaces = 0;
269 ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
271 error("cannot get space info with %u slots: %m",
277 qsort(&(sargs->spaces), count, sizeof(struct btrfs_ioctl_space_info),
278 cmp_btrfs_ioctl_space_info);
284 * This function computes the space occupied by a *single* RAID5/RAID6 chunk.
285 * The computation is performed on the basis of the number of stripes
286 * which compose the chunk, which could be different from the number of devices
287 * if a disk is added later.
289 static void get_raid56_used(struct chunk_info *chunks, int chunkcount,
290 u64 *raid5_used, u64 *raid6_used)
292 struct chunk_info *info_ptr = chunks;
296 while (chunkcount-- > 0) {
297 if (info_ptr->type & BTRFS_BLOCK_GROUP_RAID5)
298 (*raid5_used) += info_ptr->size / (info_ptr->num_stripes - 1);
299 if (info_ptr->type & BTRFS_BLOCK_GROUP_RAID6)
300 (*raid6_used) += info_ptr->size / (info_ptr->num_stripes - 2);
305 #define MIN_UNALOCATED_THRESH SZ_16M
306 static int print_filesystem_usage_overall(int fd, struct chunk_info *chunkinfo,
307 int chunkcount, struct device_info *devinfo, int devcount,
308 char *path, unsigned unit_mode)
310 struct btrfs_ioctl_space_args *sargs = NULL;
313 int width = 10; /* default 10 for human units */
315 * r_* prefix is for raw data
318 u64 r_total_size = 0; /* filesystem size, sum of device sizes */
319 u64 r_total_chunks = 0; /* sum of chunks sizes on disk(s) */
320 u64 r_total_used = 0;
321 u64 r_total_unused = 0;
322 u64 r_total_missing = 0; /* sum of missing devices size */
324 u64 r_data_chunks = 0;
325 u64 l_data_chunks = 0;
326 u64 r_metadata_used = 0;
327 u64 r_metadata_chunks = 0;
328 u64 l_metadata_chunks = 0;
329 u64 r_system_used = 0;
330 u64 r_system_chunks = 0;
332 double metadata_ratio;
336 u64 l_global_reserve = 0;
337 u64 l_global_reserve_used = 0;
338 u64 free_estimated = 0;
340 int max_data_ratio = 1;
343 sargs = load_space_info(fd, path);
350 for (i = 0; i < devcount; i++) {
351 r_total_size += devinfo[i].size;
352 if (!devinfo[i].device_size)
353 r_total_missing += devinfo[i].size;
356 if (r_total_size == 0) {
357 error("cannot get space info on '%s': %m", path);
362 get_raid56_used(chunkinfo, chunkcount, &raid5_used, &raid6_used);
364 for (i = 0; i < sargs->total_spaces; i++) {
366 u64 flags = sargs->spaces[i].flags;
369 * The raid5/raid6 ratio depends by the stripes number
370 * used by every chunk. It is computed separately
372 if (flags & BTRFS_BLOCK_GROUP_RAID0)
374 else if (flags & BTRFS_BLOCK_GROUP_RAID1)
376 else if (flags & BTRFS_BLOCK_GROUP_RAID5)
378 else if (flags & BTRFS_BLOCK_GROUP_RAID6)
380 else if (flags & BTRFS_BLOCK_GROUP_DUP)
382 else if (flags & BTRFS_BLOCK_GROUP_RAID10)
388 warning("RAID56 detected, not implemented");
390 if (ratio > max_data_ratio)
391 max_data_ratio = ratio;
393 if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV) {
394 l_global_reserve = sargs->spaces[i].total_bytes;
395 l_global_reserve_used = sargs->spaces[i].used_bytes;
397 if ((flags & (BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA))
398 == (BTRFS_BLOCK_GROUP_DATA | BTRFS_BLOCK_GROUP_METADATA)) {
401 if (flags & BTRFS_BLOCK_GROUP_DATA) {
402 r_data_used += sargs->spaces[i].used_bytes * ratio;
403 r_data_chunks += sargs->spaces[i].total_bytes * ratio;
404 l_data_chunks += sargs->spaces[i].total_bytes;
406 if (flags & BTRFS_BLOCK_GROUP_METADATA) {
407 r_metadata_used += sargs->spaces[i].used_bytes * ratio;
408 r_metadata_chunks += sargs->spaces[i].total_bytes * ratio;
409 l_metadata_chunks += sargs->spaces[i].total_bytes;
411 if (flags & BTRFS_BLOCK_GROUP_SYSTEM) {
412 r_system_used += sargs->spaces[i].used_bytes * ratio;
413 r_system_chunks += sargs->spaces[i].total_bytes * ratio;
417 r_total_chunks = r_data_chunks + r_system_chunks;
418 r_total_used = r_data_used + r_system_used;
420 r_total_chunks += r_metadata_chunks;
421 r_total_used += r_metadata_used;
423 r_total_unused = r_total_size - r_total_chunks;
425 /* Raw / Logical = raid factor, >= 1 */
426 data_ratio = (double)r_data_chunks / l_data_chunks;
428 metadata_ratio = data_ratio;
430 metadata_ratio = (double)r_metadata_chunks / l_metadata_chunks;
433 /* add the raid5/6 allocated space */
434 total_chunks += raid5_used + raid6_used;
438 * We're able to fill at least DATA for the unused space
440 * With mixed raid levels, this gives a rough estimate but more
441 * accurate than just counting the logical free space
442 * (l_data_chunks - l_data_used)
444 * In non-mixed case there's no difference.
446 free_estimated = (r_data_chunks - r_data_used) / data_ratio;
448 * For mixed-bg the metadata are left out in calculations thus global
449 * reserve would be lost. Part of it could be permanently allocated,
450 * we have to subtract the used bytes so we don't go under zero free.
453 free_estimated -= l_global_reserve - l_global_reserve_used;
454 free_min = free_estimated;
456 /* Chop unallocatable space */
457 /* FIXME: must be applied per device */
458 if (r_total_unused >= MIN_UNALOCATED_THRESH) {
459 free_estimated += r_total_unused / data_ratio;
460 /* Match the calculation of 'df', use the highest raid ratio */
461 free_min += r_total_unused / max_data_ratio;
464 if (unit_mode != UNITS_HUMAN)
467 printf("Overall:\n");
469 printf(" Device size:\t\t%*s\n", width,
470 pretty_size_mode(r_total_size, unit_mode));
471 printf(" Device allocated:\t\t%*s\n", width,
472 pretty_size_mode(r_total_chunks, unit_mode));
473 printf(" Device unallocated:\t\t%*s\n", width,
474 pretty_size_mode(r_total_unused, unit_mode | UNITS_NEGATIVE));
475 printf(" Device missing:\t\t%*s\n", width,
476 pretty_size_mode(r_total_missing, unit_mode));
477 printf(" Used:\t\t\t%*s\n", width,
478 pretty_size_mode(r_total_used, unit_mode));
479 printf(" Free (estimated):\t\t%*s\t(",
481 pretty_size_mode(free_estimated, unit_mode));
482 printf("min: %s)\n", pretty_size_mode(free_min, unit_mode));
483 printf(" Data ratio:\t\t\t%*.2f\n",
485 printf(" Metadata ratio:\t\t%*.2f\n",
486 width, metadata_ratio);
487 printf(" Global reserve:\t\t%*s\t(used: %s)\n", width,
488 pretty_size_mode(l_global_reserve, unit_mode),
489 pretty_size_mode(l_global_reserve_used, unit_mode));
500 * Helper to sort the device_info structure
502 static int cmp_device_info(const void *a, const void *b)
504 return strcmp(((struct device_info *)a)->path,
505 ((struct device_info *)b)->path);
508 int dev_to_fsid(const char *dev, u8 *fsid)
510 struct btrfs_super_block *disk_super;
511 char buf[BTRFS_SUPER_INFO_SIZE];
515 fd = open(dev, O_RDONLY);
521 disk_super = (struct btrfs_super_block *)buf;
522 ret = btrfs_read_dev_super(fd, disk_super,
523 BTRFS_SUPER_INFO_OFFSET, SBREAD_DEFAULT);
527 memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
536 * This function loads the device_info structure and put them in an array
538 static int load_device_info(int fd, struct device_info **device_info_ptr,
539 int *device_info_count)
542 struct btrfs_ioctl_fs_info_args fi_args;
543 struct btrfs_ioctl_dev_info_args dev_info;
544 struct device_info *info;
545 u8 fsid[BTRFS_UUID_SIZE];
547 *device_info_count = 0;
548 *device_info_ptr = NULL;
550 ret = ioctl(fd, BTRFS_IOC_FS_INFO, &fi_args);
554 error("cannot get filesystem info: %m");
558 info = calloc(fi_args.num_devices, sizeof(struct device_info));
560 error("not enough memory");
564 for (i = 0, ndevs = 0 ; i <= fi_args.max_id ; i++) {
565 if (ndevs >= fi_args.num_devices) {
566 error("unexpected number of devices: %d >= %llu", ndevs,
567 (unsigned long long)fi_args.num_devices);
569 "if seed device is used, try running this command as root");
572 memset(&dev_info, 0, sizeof(dev_info));
573 ret = get_device_info(fd, i, &dev_info);
578 error("cannot get info about device devid=%d", i);
583 * Skip seed device by checking device's fsid (requires root).
584 * And we will skip only if dev_to_fsid is successful and dev
586 * Ignore any other error including -EACCES, which is seen when
587 * a non-root process calls dev_to_fsid(path)->open(path).
589 ret = dev_to_fsid((const char *)dev_info.path, fsid);
590 if (!ret && memcmp(fi_args.fsid, fsid, BTRFS_FSID_SIZE) != 0)
593 info[ndevs].devid = dev_info.devid;
594 if (!dev_info.path[0]) {
595 strcpy(info[ndevs].path, "missing");
597 strcpy(info[ndevs].path, (char *)dev_info.path);
598 info[ndevs].device_size =
599 get_partition_size((char *)dev_info.path);
601 info[ndevs].size = dev_info.total_bytes;
605 if (ndevs != fi_args.num_devices) {
606 error("unexpected number of devices: %d != %llu", ndevs,
607 (unsigned long long)fi_args.num_devices);
611 qsort(info, fi_args.num_devices,
612 sizeof(struct device_info), cmp_device_info);
614 *device_info_count = fi_args.num_devices;
615 *device_info_ptr = info;
624 int load_chunk_and_device_info(int fd, struct chunk_info **chunkinfo,
625 int *chunkcount, struct device_info **devinfo, int *devcount)
629 ret = load_chunk_info(fd, chunkinfo, chunkcount);
632 "cannot read detailed chunk info, RAID5/6 numbers will be incorrect, run as root");
637 ret = load_device_info(fd, devinfo, devcount);
640 "cannot get filesystem info from ioctl(FS_INFO), run as root");
648 * This function computes the size of a chunk in a disk
650 static u64 calc_chunk_size(struct chunk_info *ci)
652 if (ci->type & BTRFS_BLOCK_GROUP_RAID0)
653 return ci->size / ci->num_stripes;
654 else if (ci->type & BTRFS_BLOCK_GROUP_RAID1)
656 else if (ci->type & BTRFS_BLOCK_GROUP_DUP)
658 else if (ci->type & BTRFS_BLOCK_GROUP_RAID5)
659 return ci->size / (ci->num_stripes -1);
660 else if (ci->type & BTRFS_BLOCK_GROUP_RAID6)
661 return ci->size / (ci->num_stripes -2);
662 else if (ci->type & BTRFS_BLOCK_GROUP_RAID10)
663 return ci->size / ci->num_stripes;
668 * This function print the results of the command "btrfs fi usage"
671 static void _cmd_filesystem_usage_tabular(unsigned unit_mode,
672 struct btrfs_ioctl_space_args *sargs,
673 struct chunk_info *chunks_info_ptr,
674 int chunks_info_count,
675 struct device_info *device_info_ptr,
676 int device_info_count)
679 u64 total_unused = 0;
680 struct string_table *matrix = NULL;
685 const int vhdr_skip = 3; /* amount of vertical header space */
687 /* id, path, unallocated */
690 /* Properly count the real space infos */
691 for (i = 0; i < sargs->total_spaces; i++) {
692 if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
697 /* 2 for header, empty line, devices, ===, total, used */
698 nrows = vhdr_skip + device_info_count + 1 + 2;
700 matrix = table_create(ncols, nrows);
702 error("not enough memory");
707 * We have to skip the global block reserve everywhere as it's an
708 * artificial blockgroup
712 for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
713 u64 flags = sargs->spaces[i].flags;
715 if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
718 table_printf(matrix, col, 0, "<%s",
719 btrfs_group_type_str(flags));
720 table_printf(matrix, col, 1, "<%s",
721 btrfs_group_profile_str(flags));
724 unallocated_col = col;
726 table_printf(matrix, 0, 1, "<Id");
727 table_printf(matrix, 1, 1, "<Path");
728 table_printf(matrix, unallocated_col, 1, "<Unallocated");
731 for (i = 0; i < device_info_count; i++) {
735 u64 total_allocated = 0, unused;
737 p = strrchr(device_info_ptr[i].path, '/');
739 p = device_info_ptr[i].path;
743 table_printf(matrix, 0, vhdr_skip + i, ">%llu",
744 device_info_ptr[i].devid);
745 table_printf(matrix, 1, vhdr_skip + i, "<%s",
746 device_info_ptr[i].path);
748 for (col = spaceinfos_col, k = 0; k < sargs->total_spaces; k++) {
749 u64 flags = sargs->spaces[k].flags;
750 u64 devid = device_info_ptr[i].devid;
754 if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
757 for (j = 0 ; j < chunks_info_count ; j++) {
758 if (chunks_info_ptr[j].type != flags )
760 if (chunks_info_ptr[j].devid != devid)
763 size += calc_chunk_size(chunks_info_ptr+j);
767 table_printf(matrix, col, vhdr_skip+ i,
768 ">%s", pretty_size_mode(size, unit_mode));
770 table_printf(matrix, col, vhdr_skip + i, ">-");
772 total_allocated += size;
776 unused = get_partition_size(device_info_ptr[i].path)
779 table_printf(matrix, unallocated_col, vhdr_skip + i, ">%s",
780 pretty_size_mode(unused, unit_mode | UNITS_NEGATIVE));
781 total_unused += unused;
785 for (i = 0; i < spaceinfos_col; i++) {
786 table_printf(matrix, i, vhdr_skip - 1, "*-");
787 table_printf(matrix, i, vhdr_skip + device_info_count, "*-");
790 for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
791 if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
794 table_printf(matrix, col, vhdr_skip - 1, "*-");
795 table_printf(matrix, col, vhdr_skip + device_info_count, "*-");
798 /* One for Unallocated */
799 table_printf(matrix, col, vhdr_skip - 1, "*-");
800 table_printf(matrix, col, vhdr_skip + device_info_count, "*-");
803 table_printf(matrix, 1, vhdr_skip + device_info_count + 1, "<Total");
804 for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
805 if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
808 table_printf(matrix, col++, vhdr_skip + device_info_count + 1,
810 pretty_size_mode(sargs->spaces[i].total_bytes, unit_mode));
813 table_printf(matrix, unallocated_col, vhdr_skip + device_info_count + 1,
815 pretty_size_mode(total_unused, unit_mode | UNITS_NEGATIVE));
817 table_printf(matrix, 1, vhdr_skip + device_info_count + 2, "<Used");
818 for (i = 0, col = spaceinfos_col; i < sargs->total_spaces; i++) {
819 if (sargs->spaces[i].flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
822 table_printf(matrix, col++, vhdr_skip + device_info_count + 2,
824 pretty_size_mode(sargs->spaces[i].used_bytes, unit_mode));
832 * This function prints the unused space per every disk
834 static void print_unused(struct chunk_info *info_ptr,
836 struct device_info *device_info_ptr,
837 int device_info_count,
841 for (i = 0; i < device_info_count; i++) {
845 for (j = 0; j < info_count; j++)
846 if (info_ptr[j].devid == device_info_ptr[i].devid)
847 total += calc_chunk_size(info_ptr+j);
849 printf(" %s\t%10s\n",
850 device_info_ptr[i].path,
851 pretty_size_mode(device_info_ptr[i].size - total,
857 * This function prints the allocated chunk per every disk
859 static void print_chunk_device(u64 chunk_type,
860 struct chunk_info *chunks_info_ptr,
861 int chunks_info_count,
862 struct device_info *device_info_ptr,
863 int device_info_count,
868 for (i = 0; i < device_info_count; i++) {
872 for (j = 0; j < chunks_info_count; j++) {
874 if (chunks_info_ptr[j].type != chunk_type)
876 if (chunks_info_ptr[j].devid != device_info_ptr[i].devid)
879 total += calc_chunk_size(&(chunks_info_ptr[j]));
880 //total += chunks_info_ptr[j].size;
884 printf(" %s\t%10s\n",
885 device_info_ptr[i].path,
886 pretty_size_mode(total, unit_mode));
891 * This function print the results of the command "btrfs fi usage"
894 static void _cmd_filesystem_usage_linear(unsigned unit_mode,
895 struct btrfs_ioctl_space_args *sargs,
896 struct chunk_info *info_ptr,
898 struct device_info *device_info_ptr,
899 int device_info_count)
903 for (i = 0; i < sargs->total_spaces; i++) {
904 const char *description;
906 u64 flags = sargs->spaces[i].flags;
908 if (flags & BTRFS_SPACE_INFO_GLOBAL_RSV)
911 description = btrfs_group_type_str(flags);
912 r_mode = btrfs_group_profile_str(flags);
914 printf("%s,%s: Size:%s, ",
917 pretty_size_mode(sargs->spaces[i].total_bytes,
920 pretty_size_mode(sargs->spaces[i].used_bytes, unit_mode));
921 print_chunk_device(flags, info_ptr, info_count,
922 device_info_ptr, device_info_count, unit_mode);
926 printf("Unallocated:\n");
927 print_unused(info_ptr, info_count, device_info_ptr, device_info_count,
928 unit_mode | UNITS_NEGATIVE);
931 static int print_filesystem_usage_by_chunk(int fd,
932 struct chunk_info *chunkinfo, int chunkcount,
933 struct device_info *devinfo, int devcount,
934 char *path, unsigned unit_mode, int tabular)
936 struct btrfs_ioctl_space_args *sargs;
942 sargs = load_space_info(fd, path);
949 _cmd_filesystem_usage_tabular(unit_mode, sargs, chunkinfo,
950 chunkcount, devinfo, devcount);
952 _cmd_filesystem_usage_linear(unit_mode, sargs, chunkinfo,
953 chunkcount, devinfo, devcount);
960 const char * const cmd_filesystem_usage_usage[] = {
961 "btrfs filesystem usage [options] <path> [<path>..]",
962 "Show detailed information about internal filesystem usage .",
963 HELPINFO_UNITS_SHORT_LONG,
964 "-T show data in tabular format",
968 int cmd_filesystem_usage(int argc, char **argv)
973 int more_than_one = 0;
976 unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
981 c = getopt(argc, argv, "T");
990 usage(cmd_filesystem_usage_usage);
994 if (check_argc_min(argc - optind, 1))
995 usage(cmd_filesystem_usage_usage);
997 for (i = optind; i < argc; i++) {
999 DIR *dirstream = NULL;
1000 struct chunk_info *chunkinfo = NULL;
1001 struct device_info *devinfo = NULL;
1005 fd = btrfs_open_dir(argv[i], &dirstream, 1);
1013 ret = load_chunk_and_device_info(fd, &chunkinfo, &chunkcount,
1014 &devinfo, &devcount);
1018 ret = print_filesystem_usage_overall(fd, chunkinfo, chunkcount,
1019 devinfo, devcount, argv[i], unit_mode);
1023 ret = print_filesystem_usage_by_chunk(fd, chunkinfo, chunkcount,
1024 devinfo, devcount, argv[i], unit_mode, tabular);
1026 close_file_or_dir(fd, dirstream);
1039 void print_device_chunks(struct device_info *devinfo,
1040 struct chunk_info *chunks_info_ptr,
1041 int chunks_info_count, unsigned unit_mode)
1046 for (i = 0 ; i < chunks_info_count ; i++) {
1047 const char *description;
1052 if (chunks_info_ptr[i].devid != devinfo->devid)
1055 flags = chunks_info_ptr[i].type;
1057 description = btrfs_group_type_str(flags);
1058 r_mode = btrfs_group_profile_str(flags);
1059 size = calc_chunk_size(chunks_info_ptr+i);
1060 printf(" %s,%s:%*s%10s\n",
1063 (int)(20 - strlen(description) - strlen(r_mode)), "",
1064 pretty_size_mode(size, unit_mode));
1069 printf(" Unallocated: %*s%10s\n",
1070 (int)(20 - strlen("Unallocated")), "",
1071 pretty_size_mode(devinfo->size - allocated,
1072 unit_mode | UNITS_NEGATIVE));
1075 void print_device_sizes(struct device_info *devinfo, unsigned unit_mode)
1077 printf(" Device size: %*s%10s\n",
1078 (int)(20 - strlen("Device size")), "",
1079 pretty_size_mode(devinfo->device_size, unit_mode));
1080 printf(" Device slack: %*s%10s\n",
1081 (int)(20 - strlen("Device slack")), "",
1082 pretty_size_mode(devinfo->device_size > 0 ?
1083 devinfo->device_size - devinfo->size : 0,