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inspect.c
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inspect.c
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/*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public
* License v2 as published by the Free Software Foundation.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* General Public License for more details.
*
* You should have received a copy of the GNU General Public
* License along with this program; if not, write to the
* Free Software Foundation, Inc., 59 Temple Place - Suite 330,
* Boston, MA 021110-1307, USA.
*/
#include "kerncompat.h"
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <sys/statfs.h>
#include <linux/fs.h>
#include <linux/magic.h>
#include <stdbool.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <errno.h>
#include <getopt.h>
#include <limits.h>
#include <dirent.h>
#include <string.h>
#include <unistd.h>
#include "kernel-lib/list.h"
#include "kernel-lib/sizes.h"
#include "kernel-shared/accessors.h"
#include "kernel-shared/uapi/btrfs_tree.h"
#include "kernel-shared/uapi/btrfs.h"
#include "kernel-shared/ctree.h"
#include "kernel-shared/disk-io.h"
#include "common/internal.h"
#include "common/messages.h"
#include "common/utils.h"
#include "common/send-utils.h"
#include "common/help.h"
#include "common/open-utils.h"
#include "common/units.h"
#include "common/string-utils.h"
#include "common/string-table.h"
#include "common/sort-utils.h"
#include "common/tree-search.h"
#include "cmds/commands.h"
static const char * const inspect_cmd_group_usage[] = {
"btrfs inspect-internal <command> <args>",
NULL
};
static int __ino_to_path_fd(u64 inum, int fd, const char *prepend)
{
int ret;
int i;
struct btrfs_ioctl_ino_path_args ipa;
char pathbuf[PATH_MAX];
struct btrfs_data_container *fspath = (struct btrfs_data_container *)pathbuf;
memset(fspath, 0, sizeof(*fspath));
ipa.inum = inum;
ipa.size = PATH_MAX;
ipa.fspath = ptr_to_u64(fspath);
ret = ioctl(fd, BTRFS_IOC_INO_PATHS, &ipa);
if (ret < 0) {
error("ino paths ioctl: %m");
goto out;
}
pr_verbose(LOG_DEBUG,
"ioctl ret=%d, bytes_left=%lu, bytes_missing=%lu cnt=%d, missed=%d\n",
ret, (unsigned long)fspath->bytes_left,
(unsigned long)fspath->bytes_missing, fspath->elem_cnt,
fspath->elem_missed);
for (i = 0; i < fspath->elem_cnt; ++i) {
u64 ptr;
char *str;
ptr = (u64)(unsigned long)fspath->val;
ptr += fspath->val[i];
str = (char *)(unsigned long)ptr;
if (prepend)
pr_verbose(LOG_DEFAULT, "%s/%s\n", prepend, str);
else
pr_verbose(LOG_DEFAULT, "%s\n", str);
}
out:
return !!ret;
}
static const char * const cmd_inspect_inode_resolve_usage[] = {
"btrfs inspect-internal inode-resolve [-v] <inode> <path>",
"Get file system paths for the given inode",
"",
OPTLINE("-v", "deprecated, alias for global -v option"),
HELPINFO_INSERT_GLOBALS,
HELPINFO_INSERT_VERBOSE,
NULL
};
static int cmd_inspect_inode_resolve(const struct cmd_struct *cmd,
int argc, char **argv)
{
int fd;
int ret;
optind = 0;
while (1) {
int c = getopt(argc, argv, "v");
if (c < 0)
break;
switch (c) {
case 'v':
bconf_be_verbose();
break;
default:
usage_unknown_option(cmd, argv);
}
}
if (check_argc_exact(argc - optind, 2))
return 1;
fd = btrfs_open_dir(argv[optind + 1]);
if (fd < 0)
return 1;
ret = __ino_to_path_fd(arg_strtou64(argv[optind]), fd, argv[optind+1]);
close(fd);
return !!ret;
}
static DEFINE_SIMPLE_COMMAND(inspect_inode_resolve, "inode-resolve");
static const char * const cmd_inspect_logical_resolve_usage[] = {
"btrfs inspect-internal logical-resolve [-Pvo] [-s bufsize] <logical> <path>",
"Get file system paths for the given logical address",
"",
OPTLINE("-P", "skip the path resolving and print the inodes instead"),
OPTLINE("-o", "ignore offsets when matching references (requires v2 ioctl support in the kernel 4.15+)"),
OPTLINE("-s bufsize", "set inode container's size. This is used to increase inode "
"container's size in case it is not enough to read all the "
"resolved results. The max value one can set is 64k with the "
"v1 ioctl. Sizes over 64k will use the v2 ioctl (kernel 4.15+)"),
OPTLINE("-v", "deprecated, alias for global -v option"),
HELPINFO_INSERT_GLOBALS,
HELPINFO_INSERT_VERBOSE,
NULL
};
static int cmd_inspect_logical_resolve(const struct cmd_struct *cmd,
int argc, char **argv)
{
int ret;
int fd;
int i;
bool getpath = true;
int bytes_left;
struct btrfs_ioctl_logical_ino_args loi = { 0 };
struct btrfs_data_container *inodes;
u64 size = SZ_64K;
char full_path[PATH_MAX];
char *path_ptr;
u64 flags = 0;
unsigned long request = BTRFS_IOC_LOGICAL_INO;
optind = 0;
while (1) {
int c = getopt(argc, argv, "Pvos:");
if (c < 0)
break;
switch (c) {
case 'P':
getpath = false;
break;
case 'v':
bconf_be_verbose();
break;
case 'o':
flags |= BTRFS_LOGICAL_INO_ARGS_IGNORE_OFFSET;
break;
case 's':
size = arg_strtou64(optarg);
break;
default:
usage_unknown_option(cmd, argv);
}
}
if (check_argc_exact(argc - optind, 2))
return 1;
size = min(size, (u64)SZ_16M);
inodes = malloc(size);
if (!inodes)
return 1;
if (size > SZ_64K || flags != 0)
request = BTRFS_IOC_LOGICAL_INO_V2;
memset(inodes, 0, sizeof(*inodes));
loi.logical = arg_strtou64(argv[optind]);
loi.size = size;
loi.flags = flags;
loi.inodes = ptr_to_u64(inodes);
fd = btrfs_open_dir(argv[optind + 1]);
if (fd < 0) {
ret = 12;
goto out;
}
ret = ioctl(fd, request, &loi);
if (ret < 0) {
error("logical ino ioctl: %m");
goto out;
}
pr_verbose(LOG_DEBUG,
"ioctl ret=%d, total_size=%llu, bytes_left=%lu, bytes_missing=%lu, cnt=%d, missed=%d\n",
ret, size, (unsigned long)inodes->bytes_left,
(unsigned long)inodes->bytes_missing, inodes->elem_cnt,
inodes->elem_missed);
bytes_left = sizeof(full_path);
ret = snprintf(full_path, bytes_left, "%s/", argv[optind+1]);
path_ptr = full_path + ret;
bytes_left -= ret + 1;
if (bytes_left < 0) {
error("path buffer too small: %d bytes", bytes_left);
goto out;
}
ret = 0;
for (i = 0; i < inodes->elem_cnt; i += 3) {
u64 inum = inodes->val[i];
u64 offset = inodes->val[i+1];
u64 root = inodes->val[i+2];
int path_fd;
if (getpath) {
char mount_path[PATH_MAX];
char name[PATH_MAX];
ret = btrfs_subvolid_resolve(fd, name, sizeof(name), root);
if (ret < 0)
goto out;
if (name[0] == 0) {
path_ptr[-1] = '\0';
path_fd = fd;
strncpy_null(mount_path, full_path, PATH_MAX);
} else {
char *mounted = NULL;
char subvol[PATH_MAX];
char subvolid[PATH_MAX];
/*
* btrfs_subvolid_resolve returns the full
* path to the subvolume pointed by root, but the
* subvolume can be mounted in a directory name
* different from the subvolume name. In this
* case we need to find the correct mount point
* using same subvolume path and subvol id found
* before.
*/
snprintf(subvol, PATH_MAX, "/%s", name);
snprintf(subvolid, PATH_MAX, "%llu", root);
ret = find_mount_fsroot(subvol, subvolid, &mounted);
if (ret) {
error("failed to parse mountinfo");
goto out;
}
if (!mounted) {
printf(
"inode %llu subvol %s could not be accessed: not mounted\n",
inum, name);
continue;
}
strncpy_null(mount_path, mounted, PATH_MAX);
free(mounted);
path_fd = btrfs_open_dir(mount_path);
if (path_fd < 0) {
ret = -ENOENT;
goto out;
}
}
ret = __ino_to_path_fd(inum, path_fd, mount_path);
if (path_fd != fd)
close(path_fd);
} else {
pr_verbose(LOG_DEFAULT, "inode %llu offset %llu root %llu\n", inum,
offset, root);
}
}
out:
close(fd);
free(inodes);
return !!ret;
}
static DEFINE_SIMPLE_COMMAND(inspect_logical_resolve, "logical-resolve");
static const char * const cmd_inspect_subvolid_resolve_usage[] = {
"btrfs inspect-internal subvolid-resolve <subvolid> <path>",
"Get file system paths for the given subvolume ID.",
NULL
};
static int cmd_inspect_subvolid_resolve(const struct cmd_struct *cmd,
int argc, char **argv)
{
int ret;
int fd = -1;
u64 subvol_id;
char path[PATH_MAX];
clean_args_no_options(cmd, argc, argv);
if (check_argc_exact(argc - optind, 2))
return 1;
fd = btrfs_open_dir(argv[optind + 1]);
if (fd < 0) {
ret = -ENOENT;
goto out;
}
subvol_id = arg_strtou64(argv[optind]);
ret = btrfs_subvolid_resolve(fd, path, sizeof(path), subvol_id);
if (ret) {
error("resolving subvolid %llu error %d", subvol_id, ret);
goto out;
}
path[PATH_MAX - 1] = '\0';
pr_verbose(LOG_DEFAULT, "%s\n", path);
out:
close(fd);
return !!ret;
}
static DEFINE_SIMPLE_COMMAND(inspect_subvolid_resolve, "subvolid-resolve");
static const char* const cmd_inspect_rootid_usage[] = {
"btrfs inspect-internal rootid <path>",
"Get tree ID of the containing subvolume of path.",
NULL
};
static int cmd_inspect_rootid(const struct cmd_struct *cmd,
int argc, char **argv)
{
int ret;
int fd = -1;
u64 rootid;
clean_args_no_options(cmd, argc, argv);
if (check_argc_exact(argc - optind, 1))
return 1;
fd = btrfs_open_file_or_dir(argv[optind]);
if (fd < 0) {
ret = -ENOENT;
goto out;
}
ret = lookup_path_rootid(fd, &rootid);
if (ret) {
errno = -ret;
error("failed to lookup root id: %m");
goto out;
}
pr_verbose(LOG_DEFAULT, "%llu\n", rootid);
out:
close(fd);
return !!ret;
}
static DEFINE_SIMPLE_COMMAND(inspect_rootid, "rootid");
static const char* const cmd_inspect_min_dev_size_usage[] = {
"btrfs inspect-internal min-dev-size [options] <path>",
"Get the minimum size the device can be shrunk to",
"",
"The device id 1 is used by default.",
OPTLINE("--id DEVID", "specify the device id to query"),
NULL
};
struct dev_extent_elem {
u64 start;
/* inclusive end */
u64 end;
struct list_head list;
};
static int add_dev_extent(struct list_head *list,
const u64 start, const u64 end,
const int append)
{
struct dev_extent_elem *e;
e = malloc(sizeof(*e));
if (!e)
return -ENOMEM;
e->start = start;
e->end = end;
if (append)
list_add_tail(&e->list, list);
else
list_add(&e->list, list);
return 0;
}
static void free_dev_extent_list(struct list_head *list)
{
while (!list_empty(list)) {
struct dev_extent_elem *e;
e = list_first_entry(list, struct dev_extent_elem, list);
list_del(&e->list);
free(e);
}
}
static int hole_includes_sb_mirror(const u64 start, const u64 end)
{
int i;
int ret = 0;
for (i = 0; i < BTRFS_SUPER_MIRROR_MAX; i++) {
u64 bytenr = btrfs_sb_offset(i);
if (bytenr >= start && bytenr <= end) {
ret = 1;
break;
}
}
return ret;
}
static void adjust_dev_min_size(struct list_head *extents,
struct list_head *holes,
u64 *min_size)
{
/*
* If relocation of the block group of a device extent must happen (see
* below) scratch space is used for the relocation. So track here the
* size of the largest device extent that has to be relocated. We track
* only the largest and not the sum of the sizes of all relocated block
* groups because after each block group is relocated the running
* transaction is committed so that pinned space is released.
*/
u64 scratch_space = 0;
/*
* List of device extents is sorted by descending order of the extent's
* end offset. If some extent goes beyond the computed minimum size,
* which initially matches the sum of the lengths of all extents,
* we need to check if the extent can be relocated to an hole in the
* device between [0, *min_size[ (which is what the resize ioctl does).
*/
while (!list_empty(extents)) {
struct dev_extent_elem *e;
struct dev_extent_elem *h;
int found = 0;
u64 extent_len;
u64 hole_len = 0;
e = list_first_entry(extents, struct dev_extent_elem, list);
if (e->end <= *min_size)
break;
/*
* Our extent goes beyond the computed *min_size. See if we can
* find a hole large enough to relocate it to. If not we must stop
* and set *min_size to the end of the extent.
*/
extent_len = e->end - e->start + 1;
list_for_each_entry(h, holes, list) {
hole_len = h->end - h->start + 1;
if (hole_len >= extent_len) {
found = 1;
break;
}
}
if (!found) {
*min_size = e->end + 1;
break;
}
/*
* If the hole found contains the location for a superblock
* mirror, we are pessimistic and require allocating one
* more extent of the same size. This is because the block
* group could be in the worst case used by a single extent
* with a size >= (block_group.length - superblock.size).
*/
if (hole_includes_sb_mirror(h->start,
h->start + extent_len - 1))
*min_size += extent_len;
if (hole_len > extent_len) {
h->start += extent_len;
} else {
list_del(&h->list);
free(h);
}
list_del(&e->list);
free(e);
if (extent_len > scratch_space)
scratch_space = extent_len;
}
if (scratch_space) {
*min_size += scratch_space;
/*
* Chunk allocation requires inserting/updating items in the
* chunk tree, so often this can lead to the need of allocating
* a new system chunk too, which has a maximum size of 32Mb.
*/
*min_size += SZ_32M;
}
}
static int print_min_dev_size(int fd, u64 devid)
{
int ret = 1;
/*
* Device allocations starts at 1Mb or at the value passed through the
* mount option alloc_start if it's bigger than 1Mb. The alloc_start
* option is used for debugging and testing only, and recently the
* possibility of deprecating/removing it has been discussed, so we
* ignore it here.
*/
u64 min_size = SZ_1M;
struct btrfs_tree_search_args args;
struct btrfs_ioctl_search_key *sk;
u64 last_pos = (u64)-1;
LIST_HEAD(extents);
LIST_HEAD(holes);
memset(&args, 0, sizeof(args));
sk = btrfs_tree_search_sk(&args);
sk->tree_id = BTRFS_DEV_TREE_OBJECTID;
sk->min_objectid = devid;
sk->min_type = BTRFS_DEV_EXTENT_KEY;
sk->min_offset = 0;
sk->max_objectid = devid;
sk->max_type = BTRFS_DEV_EXTENT_KEY;
sk->max_offset = (u64)-1;
sk->min_transid = 0;
sk->max_transid = (u64)-1;
sk->nr_items = 4096;
while (1) {
int i;
unsigned long off = 0;
ret = btrfs_tree_search_ioctl(fd, &args);
if (ret < 0) {
error("tree search ioctl: %m");
ret = 1;
goto out;
}
if (sk->nr_items == 0)
break;
for (i = 0; i < sk->nr_items; i++) {
struct btrfs_dev_extent *extent;
struct btrfs_ioctl_search_header sh;
u64 len;
memcpy(&sh, btrfs_tree_search_data(&args, off), sizeof(sh));
off += sizeof(sh);
extent = btrfs_tree_search_data(&args, off);
off += sh.len;
sk->min_objectid = sh.objectid;
sk->min_type = sh.type;
sk->min_offset = sh.offset + 1;
if (sh.objectid != devid || sh.type != BTRFS_DEV_EXTENT_KEY)
continue;
len = btrfs_stack_dev_extent_length(extent);
min_size += len;
ret = add_dev_extent(&extents, sh.offset,
sh.offset + len - 1, 0);
if (!ret && last_pos != (u64)-1 && last_pos != sh.offset)
ret = add_dev_extent(&holes, last_pos,
sh.offset - 1, 1);
if (ret) {
errno = -ret;
error("add device extent: %m");
ret = 1;
goto out;
}
last_pos = sh.offset + len;
}
if (sk->min_type != BTRFS_DEV_EXTENT_KEY ||
sk->min_objectid != devid)
break;
}
adjust_dev_min_size(&extents, &holes, &min_size);
pr_verbose(LOG_DEFAULT, "%llu bytes (%s)\n", min_size, pretty_size(min_size));
ret = 0;
out:
free_dev_extent_list(&extents);
free_dev_extent_list(&holes);
return ret;
}
static int cmd_inspect_min_dev_size(const struct cmd_struct *cmd,
int argc, char **argv)
{
int ret;
int fd = -1;
u64 devid = 1;
optind = 0;
while (1) {
int c;
enum { GETOPT_VAL_DEVID = GETOPT_VAL_FIRST };
static const struct option long_options[] = {
{ "id", required_argument, NULL, GETOPT_VAL_DEVID },
{NULL, 0, NULL, 0}
};
c = getopt_long(argc, argv, "", long_options, NULL);
if (c < 0)
break;
switch (c) {
case GETOPT_VAL_DEVID:
devid = arg_strtou64(optarg);
break;
default:
usage_unknown_option(cmd, argv);
}
}
if (check_argc_exact(argc - optind, 1))
return 1;
fd = btrfs_open_dir(argv[optind]);
if (fd < 0) {
ret = -ENOENT;
goto out;
}
ret = print_min_dev_size(fd, devid);
close(fd);
out:
return !!ret;
}
static DEFINE_SIMPLE_COMMAND(inspect_min_dev_size, "min-dev-size");
static const char * const cmd_inspect_list_chunks_usage[] = {
"btrfs inspect-internal list-chunks [options] <path>",
"Enumerate chunks on all devices",
"Enumerate chunks on all devices. Chunks are the physical storage tied to a device,",
"striped profiles they appear multiple times for a ginve logical offset, on other",
"profiles the correspondence is 1:1 or 1:N.",
"",
HELPINFO_UNITS_LONG,
OPTLINE("--sort MODE", "sort by a column (ascending):\n"
"MODE is a coma separated list of:\n"
"devid - by device id (default, with pstart)\n"
"pstart - physical start\n"
"lstart - logical offset\n"
"usage - by chunk usage\n"
"length - by chunk length"
),
NULL
};
struct list_chunks_entry {
u64 devid;
u64 start;
u64 lstart;
u64 length;
u64 flags;
u64 lnumber;
u64 used;
u64 pnumber;
};
struct list_chunks_ctx {
unsigned length;
unsigned size;
struct list_chunks_entry *stats;
};
static int cmp_cse_devid(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
if (a->devid < b->devid)
return -1;
if (a->devid > b->devid)
return 1;
return 0;
}
static int cmp_cse_devid_pstart(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
if (a->devid < b->devid)
return -1;
if (a->devid > b->devid)
return 1;
if (a->start < b->start)
return -1;
if (a->start == b->start)
return 0;
return 1;
}
static int cmp_cse_pstart(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
if (a->start < b->start)
return -1;
if (a->start == b->start)
return 0;
return 1;
}
static int cmp_cse_lstart(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
if (a->lstart < b->lstart)
return -1;
if (a->lstart == b->lstart)
return 0;
return 1;
}
/* Compare entries by usage percent, descending. */
static int cmp_cse_usage(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
const float usage_a = (float)a->used / a->length * 100;
const float usage_b = (float)b->used / b->length * 100;
const float epsilon = 1e-8;
if (usage_b - usage_a < epsilon)
return 1;
if (usage_a - usage_b < epsilon)
return -1;
return 0;
}
static int cmp_cse_length(const void *va, const void *vb)
{
const struct list_chunks_entry *a = va;
const struct list_chunks_entry *b = vb;
if (a->length < b->length)
return -1;
if (a->length > b->length)
return 1;
return 0;
}
static int print_list_chunks(struct list_chunks_ctx *ctx, const char *sortmode,
unsigned unit_mode)
{
u64 devid;
struct list_chunks_entry e;
struct string_table *table;
int col_count, col;
int i;
u64 number;
u32 tabidx;
enum {
CHUNK_SORT_PSTART,
CHUNK_SORT_LSTART,
CHUNK_SORT_USAGE,
CHUNK_SORT_LENGTH,
CHUNK_SORT_DEFAULT = CHUNK_SORT_PSTART
};
static const struct sortdef sortit[] = {
{ .name = "devid", .comp = (sort_cmp_t)cmp_cse_devid,
.desc = "sort by device id (default, with pstart)",
.id = CHUNK_SORT_PSTART
},
{ .name = "pstart", .comp = (sort_cmp_t)cmp_cse_pstart,
.desc = "sort by physical start offset",
.id = CHUNK_SORT_PSTART
},
{ .name = "lstart", .comp = (sort_cmp_t)cmp_cse_lstart,
.desc = "sort by logical offset",
.id = CHUNK_SORT_LSTART
},
{ .name = "usage", .comp = (sort_cmp_t)cmp_cse_usage,
.desc = "sort by chunk usage",
.id = CHUNK_SORT_USAGE
},
{ .name = "length", .comp = (sort_cmp_t)cmp_cse_length,
.desc = "sort by length",
.id = CHUNK_SORT_LENGTH
},
SORTDEF_END
};
const char *tmp;
struct compare comp;
int id;
compare_init(&comp, sortit);
tmp = sortmode;
do {
id = compare_parse_key_to_id(&comp, &tmp);
if (id == -1) {
error("unknown sort key: %s", tmp);
return 1;
}
compare_add_sort_id(&comp, id);
} while (id >= 0);
/*
* Chunks are sorted logically as found by the ioctl, we need to sort
* them once to find the physical ordering. This is the default mode.
*/
qsort(ctx->stats, ctx->length, sizeof(ctx->stats[0]), cmp_cse_devid_pstart);
devid = 0;
number = 0;
for (i = 0; i < ctx->length; i++) {
e = ctx->stats[i];
if (e.devid != devid) {
devid = e.devid;
number = 0;
}
ctx->stats[i].pnumber = number++;
}
/* Skip additional sort if nothing defined by user. */
if (comp.count > 0)
qsort_r(ctx->stats, ctx->length, sizeof(ctx->stats[0]),
(sort_r_cmp_t)compare_cmp_multi, &comp);
col_count = 9;
/* Two rows for header and separator. */
table = table_create(col_count, 2 + ctx->length);
if (!table) {
error_msg(ERROR_MSG_MEMORY, NULL);
return 1;
}
/* Print header */
col = 0;
tabidx = 0;
table_printf(table, col++, tabidx, ">Devid");
table_printf(table, col++, tabidx, ">PNumber");
table_printf(table, col++, tabidx, ">Type/profile");
table_printf(table, col++, tabidx, ">PStart");
table_printf(table, col++, tabidx, ">Length");
table_printf(table, col++, tabidx, ">PEnd");
table_printf(table, col++, tabidx, ">LNumber");
table_printf(table, col++, tabidx, ">LStart");
table_printf(table, col++, tabidx, ">Usage%%");
for (int j = 0; j < col_count; j++)
table_printf(table, j, tabidx + 1, "*-");
tabidx = 2;
devid = 0;
for (i = 0; i < ctx->length; i++) {
e = ctx->stats[i];
if (e.devid != devid)
devid = e.devid;
col = 0;
table_printf(table, col++, tabidx, ">%llu", e.devid);
table_printf(table, col++, tabidx, ">%llu", e.pnumber + 1);
table_printf(table, col++, tabidx, ">%10s/%-6s",
btrfs_group_type_str(e.flags),
btrfs_group_profile_str(e.flags));
table_printf(table, col++, tabidx, ">%s", pretty_size_mode(e.start, unit_mode));
table_printf(table, col++, tabidx, ">%s", pretty_size_mode(e.length, unit_mode));
table_printf(table, col++, tabidx, ">%s", pretty_size_mode(e.start + e.length, unit_mode));
table_printf(table, col++, tabidx, ">%llu", e.lnumber + 1);
table_printf(table, col++, tabidx, ">%s", pretty_size_mode(e.lstart, unit_mode));
table_printf(table, col++, tabidx, ">%6.2f", (float)e.used / e.length * 100);
tabidx++;
}
table_dump(table);
table_free(table);
return 0;
}
static u64 fill_usage(int fd, u64 lstart)
{
struct btrfs_tree_search_args args;
struct btrfs_ioctl_search_key *sk;
struct btrfs_block_group_item *item;
int ret;
memset(&args, 0, sizeof(args));
sk = btrfs_tree_search_sk(&args);
sk->tree_id = BTRFS_EXTENT_TREE_OBJECTID;
sk->min_objectid = lstart;
sk->min_type = BTRFS_BLOCK_GROUP_ITEM_KEY;
sk->min_offset = 0;
sk->max_objectid = lstart;
sk->max_type = BTRFS_BLOCK_GROUP_ITEM_KEY;
sk->max_offset = (u64)-1;
sk->max_transid = (u64)-1;
sk->nr_items = 1;
ret = btrfs_tree_search_ioctl(fd, &args);
if (ret < 0) {
error("cannot perform the search: %m");
return 1;
}
if (sk->nr_items == 0) {
warning("blockgroup %llu not found", lstart);
return 0;
}
if (sk->nr_items > 1)
warning("found more than one blockgroup %llu", lstart);
/* Only one item, we don't need search header. */
item = btrfs_tree_search_data(&args, sizeof(struct btrfs_ioctl_search_header));
return item->used;
}
static int cmd_inspect_list_chunks(const struct cmd_struct *cmd,
int argc, char **argv)
{
struct btrfs_tree_search_args args;
struct btrfs_ioctl_search_key *sk;
unsigned long off = 0;
u64 *lnumber = NULL;
unsigned lnumber_size = 128;
int ret;
int fd;
int i;
unsigned unit_mode;
char *sortmode = NULL;
const char *path;
struct list_chunks_ctx ctx = {
.length = 0,
.size = 1024,
.stats = NULL
};
unit_mode = get_unit_mode_from_arg(&argc, argv, 0);
while (1) {
int c;
enum { GETOPT_VAL_SORT = GETOPT_VAL_FIRST,
GETOPT_VAL_EMPTY, GETOPT_VAL_NO_EMPTY
};
static const struct option long_options[] = {
{"sort", required_argument, NULL, GETOPT_VAL_SORT },
{NULL, 0, NULL, 0}
};