#include <linux/limits.h>
#include <getopt.h>
+#include <btrfsutil.h>
+
#include "kerncompat.h"
#include "ctree.h"
-#include "ioctl.h"
#include "utils.h"
#include "volumes.h"
#include "commands.h"
#include "cmds-fi-usage.h"
#include "list_sort.h"
#include "disk-io.h"
-
+#include "help.h"
/*
* for btrfs fi show, we maintain a hash of fsids we've already printed.
* This way we don't print dups if a given FS is mounted more than once.
*/
-#define SEEN_FSID_HASH_SIZE 256
-
-struct seen_fsid {
- u8 fsid[BTRFS_FSID_SIZE];
- struct seen_fsid *next;
-};
-
static struct seen_fsid *seen_fsid_hash[SEEN_FSID_HASH_SIZE] = {NULL,};
-static int is_seen_fsid(u8 *fsid)
-{
- u8 hash = fsid[0];
- int slot = hash % SEEN_FSID_HASH_SIZE;
- struct seen_fsid *seen = seen_fsid_hash[slot];
-
- return seen ? 1 : 0;
-}
-
-static int add_seen_fsid(u8 *fsid)
-{
- u8 hash = fsid[0];
- int slot = hash % SEEN_FSID_HASH_SIZE;
- struct seen_fsid *seen = seen_fsid_hash[slot];
- struct seen_fsid *alloc;
-
- if (!seen)
- goto insert;
-
- while (1) {
- if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
- return -EEXIST;
-
- if (!seen->next)
- break;
-
- seen = seen->next;
- }
-
-insert:
-
- alloc = malloc(sizeof(*alloc));
- if (!alloc)
- return -ENOMEM;
-
- alloc->next = NULL;
- memcpy(alloc->fsid, fsid, BTRFS_FSID_SIZE);
-
- if (seen)
- seen->next = alloc;
- else
- seen_fsid_hash[slot] = alloc;
-
- return 0;
-}
-
-static void free_seen_fsid(void)
-{
- int slot;
- struct seen_fsid *seen;
- struct seen_fsid *next;
-
- for (slot = 0; slot < SEEN_FSID_HASH_SIZE; slot++) {
- seen = seen_fsid_hash[slot];
- while (seen) {
- next = seen->next;
- free(seen);
- seen = next;
- }
- seen_fsid_hash[slot] = NULL;
- }
-}
-
static const char * const filesystem_cmd_group_usage[] = {
"btrfs filesystem [<group>] <command> [<args>]",
NULL
};
static const char * const cmd_filesystem_df_usage[] = {
- "btrfs filesystem df [options] <path>",
- "Show space usage information for a mount point",
- "-b|--raw raw numbers in bytes",
- "-h|--human-readable",
- " human friendly numbers, base 1024 (default)",
- "-H human friendly numbers, base 1000",
- "--iec use 1024 as a base (KiB, MiB, GiB, TiB)",
- "--si use 1000 as a base (kB, MB, GB, TB)",
- "-k|--kbytes show sizes in KiB, or kB with --si",
- "-m|--mbytes show sizes in MiB, or MB with --si",
- "-g|--gbytes show sizes in GiB, or GB with --si",
- "-t|--tbytes show sizes in TiB, or TB with --si",
- NULL
+ "btrfs filesystem df [options] <path>",
+ "Show space usage information for a mount point",
+ HELPINFO_UNITS_SHORT_LONG,
+ NULL
};
static int get_df(int fd, struct btrfs_ioctl_space_args **sargs_ret)
{
u64 count = 0;
- int ret, e;
+ int ret;
struct btrfs_ioctl_space_args *sargs;
sargs = malloc(sizeof(struct btrfs_ioctl_space_args));
sargs->total_spaces = 0;
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
- e = errno;
- if (ret) {
- fprintf(stderr, "ERROR: couldn't get space info - %s\n",
- strerror(e));
+ if (ret < 0) {
+ error("cannot get space info: %m");
free(sargs);
- return -e;
+ return -errno;
}
/* This really should never happen */
if (!sargs->total_spaces) {
sargs->space_slots = count;
sargs->total_spaces = 0;
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
- e = errno;
- if (ret) {
- fprintf(stderr, "ERROR: get space info count %llu - %s\n",
- count, strerror(e));
+ if (ret < 0) {
+ error("cannot get space info with %llu slots: %m",
+ count);
free(sargs);
- return -e;
+ return -errno;
}
*sargs_ret = sargs;
return 0;
int fd;
char *path;
DIR *dirstream = NULL;
- unsigned unit_mode = UNITS_DEFAULT;
+ unsigned unit_mode;
- while (1) {
- int c;
- static const struct option long_options[] = {
- { "raw", no_argument, NULL, 'b'},
- { "kbytes", no_argument, NULL, 'k'},
- { "mbytes", no_argument, NULL, 'm'},
- { "gbytes", no_argument, NULL, 'g'},
- { "tbytes", no_argument, NULL, 't'},
- { "si", no_argument, NULL, GETOPT_VAL_SI},
- { "iec", no_argument, NULL, GETOPT_VAL_IEC},
- { "human-readable", no_argument, NULL,
- GETOPT_VAL_HUMAN_READABLE},
- { NULL, 0, NULL, 0 }
- };
+ unit_mode = get_unit_mode_from_arg(&argc, argv, 1);
- c = getopt_long(argc, argv, "bhHkmgt", long_options, NULL);
- if (c < 0)
- break;
- switch (c) {
- case 'b':
- unit_mode = UNITS_RAW;
- break;
- case 'k':
- units_set_base(&unit_mode, UNITS_KBYTES);
- break;
- case 'm':
- units_set_base(&unit_mode, UNITS_MBYTES);
- break;
- case 'g':
- units_set_base(&unit_mode, UNITS_GBYTES);
- break;
- case 't':
- units_set_base(&unit_mode, UNITS_TBYTES);
- break;
- case GETOPT_VAL_HUMAN_READABLE:
- case 'h':
- unit_mode = UNITS_HUMAN_BINARY;
- break;
- case 'H':
- unit_mode = UNITS_HUMAN_DECIMAL;
- break;
- case GETOPT_VAL_SI:
- units_set_mode(&unit_mode, UNITS_DECIMAL);
- break;
- case GETOPT_VAL_IEC:
- units_set_mode(&unit_mode, UNITS_BINARY);
- break;
- default:
- usage(cmd_filesystem_df_usage);
- }
- }
+ clean_args_no_options(argc, argv, cmd_filesystem_df_usage);
- if (check_argc_exact(argc, optind + 1))
+ if (check_argc_exact(argc - optind, 1))
usage(cmd_filesystem_df_usage);
path = argv[optind];
- fd = open_file_or_dir(path, &dirstream);
- if (fd < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", path);
+ fd = btrfs_open_dir(path, &dirstream, 1);
+ if (fd < 0)
return 1;
- }
+
ret = get_df(fd, &sargs);
if (ret == 0) {
print_df(sargs, unit_mode);
free(sargs);
} else {
- fprintf(stderr, "ERROR: get_df failed %s\n", strerror(-ret));
+ error("get_df failed %s", strerror(-ret));
}
close_file_or_dir(fd, dirstream);
return !!ret;
}
-static int match_search_item_kernel(__u8 *fsid, char *mnt, char *label,
+static int match_search_item_kernel(u8 *fsid, char *mnt, char *label,
char *search)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
if (!strncmp(uuidbuf, search, search_len))
return 1;
- if (strlen(label) && strcmp(label, search) == 0)
+ if (*label && strcmp(label, search) == 0)
return 1;
if (strcmp(mnt, search) == 0)
return 0;
}
-static int uuid_search(struct btrfs_fs_devices *fs_devices, char *search)
+static int uuid_search(struct btrfs_fs_devices *fs_devices, const char *search)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
- struct list_head *cur;
struct btrfs_device *device;
int search_len = strlen(search);
if (!strncmp(uuidbuf, search, search_len))
return 1;
- list_for_each(cur, &fs_devices->devices) {
- device = list_entry(cur, struct btrfs_device, dev_list);
+ list_for_each_entry(device, &fs_devices->devices, dev_list) {
if ((device->label && strcmp(device->label, search) == 0) ||
strcmp(device->name, search) == 0)
return 1;
}
static void print_devices(struct btrfs_fs_devices *fs_devices,
- u64 *devs_found)
+ u64 *devs_found, unsigned unit_mode)
{
struct btrfs_device *device;
struct btrfs_fs_devices *cur_fs;
list_for_each_entry(device, all_devices, dev_list) {
printf("\tdevid %4llu size %s used %s path %s\n",
(unsigned long long)device->devid,
- pretty_size(device->total_bytes),
- pretty_size(device->bytes_used), device->name);
+ pretty_size_mode(device->total_bytes, unit_mode),
+ pretty_size_mode(device->bytes_used, unit_mode),
+ device->name);
(*devs_found)++;
}
}
-static void print_one_uuid(struct btrfs_fs_devices *fs_devices)
+static void print_one_uuid(struct btrfs_fs_devices *fs_devices,
+ unsigned unit_mode)
{
char uuidbuf[BTRFS_UUID_UNPARSED_SIZE];
struct btrfs_device *device;
u64 devs_found = 0;
u64 total;
- if (add_seen_fsid(fs_devices->fsid))
+ if (add_seen_fsid(fs_devices->fsid, seen_fsid_hash, -1, NULL))
return;
uuid_unparse(fs_devices->fsid, uuidbuf);
total = device->total_devs;
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
(unsigned long long)total,
- pretty_size(device->super_bytes_used));
+ pretty_size_mode(device->super_bytes_used, unit_mode));
- print_devices(fs_devices, &devs_found);
+ print_devices(fs_devices, &devs_found, unit_mode);
if (devs_found < total) {
printf("\t*** Some devices missing\n");
static int print_one_fs(struct btrfs_ioctl_fs_info_args *fs_info,
struct btrfs_ioctl_dev_info_args *dev_info,
struct btrfs_ioctl_space_args *space_info,
- char *label, char *path)
+ char *label, unsigned unit_mode)
{
int i;
int fd;
struct btrfs_ioctl_dev_info_args *tmp_dev_info;
int ret;
- ret = add_seen_fsid(fs_info->fsid);
+ ret = add_seen_fsid(fs_info->fsid, seen_fsid_hash, -1, NULL);
if (ret == -EEXIST)
return 0;
else if (ret)
return ret;
uuid_unparse(fs_info->fsid, uuidbuf);
- if (label && strlen(label))
+ if (label && *label)
printf("Label: '%s' ", label);
else
printf("Label: none ");
printf(" uuid: %s\n\tTotal devices %llu FS bytes used %s\n", uuidbuf,
fs_info->num_devices,
- pretty_size(calc_used_bytes(space_info)));
+ pretty_size_mode(calc_used_bytes(space_info),
+ unit_mode));
for (i = 0; i < fs_info->num_devices; i++) {
char *canonical_path;
canonical_path = canonicalize_path((char *)tmp_dev_info->path);
printf("\tdevid %4llu size %s used %s path %s\n",
tmp_dev_info->devid,
- pretty_size(tmp_dev_info->total_bytes),
- pretty_size(tmp_dev_info->bytes_used),
+ pretty_size_mode(tmp_dev_info->total_bytes, unit_mode),
+ pretty_size_mode(tmp_dev_info->bytes_used, unit_mode),
canonical_path);
free(canonical_path);
return 0;
}
-static int btrfs_scan_kernel(void *search)
+static int btrfs_scan_kernel(void *search, unsigned unit_mode)
{
int ret = 0, fd;
int found = 0;
memset(label, 0, sizeof(label));
while ((mnt = getmntent(f)) != NULL) {
+ free(dev_info_arg);
+ dev_info_arg = NULL;
if (strcmp(mnt->mnt_type, "btrfs"))
continue;
ret = get_fs_info(mnt->mnt_dir, &fs_info_arg,
&dev_info_arg);
- if (ret) {
- kfree(dev_info_arg);
+ if (ret)
goto out;
- }
- if (get_label_mounted(mnt->mnt_dir, label)) {
- kfree(dev_info_arg);
+ /* skip all fs already shown as mounted fs */
+ if (is_seen_fsid(fs_info_arg.fsid, seen_fsid_hash))
+ continue;
+
+ ret = get_label_mounted(mnt->mnt_dir, label);
+ /* provide backward kernel compatibility */
+ if (ret == -ENOTTY)
+ ret = get_label_unmounted(
+ (const char *)dev_info_arg->path, label);
+
+ if (ret)
goto out;
- }
+
if (search && !match_search_item_kernel(fs_info_arg.fsid,
mnt->mnt_dir, label, search)) {
- kfree(dev_info_arg);
continue;
}
fd = open(mnt->mnt_dir, O_RDONLY);
if ((fd != -1) && !get_df(fd, &space_info_arg)) {
print_one_fs(&fs_info_arg, dev_info_arg,
- space_info_arg, label, mnt->mnt_dir);
- kfree(space_info_arg);
+ space_info_arg, label, unit_mode);
+ free(space_info_arg);
memset(label, 0, sizeof(label));
found = 1;
}
if (fd != -1)
close(fd);
- kfree(dev_info_arg);
}
out:
+ free(dev_info_arg);
endmntent(f);
return !found;
}
-static int dev_to_fsid(char *dev, __u8 *fsid)
-{
- struct btrfs_super_block *disk_super;
- char *buf;
- int ret;
- int fd;
-
- buf = malloc(4096);
- if (!buf)
- return -ENOMEM;
-
- fd = open(dev, O_RDONLY);
- if (fd < 0) {
- ret = -errno;
- free(buf);
- return ret;
- }
-
- disk_super = (struct btrfs_super_block *)buf;
- ret = btrfs_read_dev_super(fd, disk_super,
- BTRFS_SUPER_INFO_OFFSET, 0);
- if (ret)
- goto out;
-
- memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
- ret = 0;
-
-out:
- close(fd);
- free(buf);
- return ret;
-}
-
static void free_fs_devices(struct btrfs_fs_devices *fs_devices)
{
struct btrfs_fs_devices *cur_seed, *next_seed;
}
/* skip all fs already shown as mounted fs */
- if (is_seen_fsid(cur_fs->fsid))
+ if (is_seen_fsid(cur_fs->fsid, seen_fsid_hash))
continue;
- fs_copy = malloc(sizeof(*fs_copy));
+ fs_copy = calloc(1, sizeof(*fs_copy));
if (!fs_copy) {
ret = -ENOMEM;
goto out;
/*
* open_ctree_* detects seed/sprout mapping
*/
- fs_info = open_ctree_fs_info(device->name, 0, 0,
+ fs_info = open_ctree_fs_info(device->name, 0, 0, 0,
OPEN_CTREE_PARTIAL);
if (!fs_info)
continue;
goto out;
}
-static const char * const cmd_show_usage[] = {
+static const char * const cmd_filesystem_show_usage[] = {
"btrfs filesystem show [options] [<path>|<uuid>|<device>|label]",
"Show the structure of a filesystem",
"-d|--all-devices show only disks under /dev containing btrfs filesystem",
"-m|--mounted show only mounted btrfs",
+ HELPINFO_UNITS_LONG,
"If no argument is given, structure of all present filesystems is shown.",
NULL
};
-static int cmd_show(int argc, char **argv)
+static int cmd_filesystem_show(int argc, char **argv)
{
LIST_HEAD(all_uuids);
struct btrfs_fs_devices *fs_devices;
int type = 0;
char mp[PATH_MAX];
char path[PATH_MAX];
- __u8 fsid[BTRFS_FSID_SIZE];
+ u8 fsid[BTRFS_FSID_SIZE];
char uuid_buf[BTRFS_UUID_UNPARSED_SIZE];
+ unsigned unit_mode;
int found = 0;
+ unit_mode = get_unit_mode_from_arg(&argc, argv, 0);
+
while (1) {
int c;
static const struct option long_options[] = {
where = BTRFS_SCAN_MOUNTED;
break;
default:
- usage(cmd_show_usage);
+ usage(cmd_filesystem_show_usage);
}
}
if (check_argc_max(argc, optind + 1))
- usage(cmd_show_usage);
+ usage(cmd_filesystem_show_usage);
if (argc > optind) {
search = argv[optind];
- if (strlen(search) == 0)
- usage(cmd_show_usage);
+ if (*search == 0)
+ usage(cmd_filesystem_show_usage);
type = check_arg_type(search);
/*
} else {
ret = dev_to_fsid(search, fsid);
if (ret) {
- fprintf(stderr,
- "ERROR: No btrfs on %s\n",
- search);
+ error("no btrfs on %s", search);
return 1;
}
uuid_unparse(fsid, uuid_buf);
goto devs_only;
/* show mounted btrfs */
- ret = btrfs_scan_kernel(search);
+ ret = btrfs_scan_kernel(search, unit_mode);
if (search && !ret) {
/* since search is found we are done */
goto out;
goto out;
devs_only:
- ret = btrfs_scan_lblkid();
+ ret = btrfs_scan_devices();
if (ret) {
- fprintf(stderr, "ERROR: %d while scanning\n", ret);
+ error("blkid device scan returned %d", ret);
return 1;
}
ret = search_umounted_fs_uuids(&all_uuids, search, &found);
if (ret < 0) {
- fprintf(stderr,
- "ERROR: %d while searching target device\n", ret);
+ error("searching target device returned error %d", ret);
return 1;
}
*/
ret = map_seed_devices(&all_uuids);
if (ret) {
- fprintf(stderr,
- "ERROR: %d while mapping seed devices\n", ret);
+ error("mapping seed devices returned error %d", ret);
return 1;
}
list_for_each_entry(fs_devices, &all_uuids, list)
- print_one_uuid(fs_devices);
+ print_one_uuid(fs_devices, unit_mode);
- if (search && !found)
+ if (search && !found) {
+ error("not a valid btrfs filesystem: %s", search);
ret = 1;
-
+ }
while (!list_empty(&all_uuids)) {
fs_devices = list_entry(all_uuids.next,
struct btrfs_fs_devices, list);
free_fs_devices(fs_devices);
}
out:
- printf("%s\n", PACKAGE_STRING);
- free_seen_fsid();
+ free_seen_fsid(seen_fsid_hash);
return ret;
}
-static const char * const cmd_sync_usage[] = {
+static const char * const cmd_filesystem_sync_usage[] = {
"btrfs filesystem sync <path>",
"Force a sync on a filesystem",
NULL
};
-static int cmd_sync(int argc, char **argv)
+static int cmd_filesystem_sync(int argc, char **argv)
{
- int fd, res, e;
- char *path;
- DIR *dirstream = NULL;
+ enum btrfs_util_error err;
- if (check_argc_exact(argc, 2))
- usage(cmd_sync_usage);
+ clean_args_no_options(argc, argv, cmd_filesystem_sync_usage);
- path = argv[1];
-
- fd = open_file_or_dir(path, &dirstream);
- if (fd < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", path);
- return 1;
- }
+ if (check_argc_exact(argc - optind, 1))
+ usage(cmd_filesystem_sync_usage);
- printf("FSSync '%s'\n", path);
- res = ioctl(fd, BTRFS_IOC_SYNC);
- e = errno;
- close_file_or_dir(fd, dirstream);
- if( res < 0 ){
- fprintf(stderr, "ERROR: unable to fs-syncing '%s' - %s\n",
- path, strerror(e));
+ err = btrfs_util_sync(argv[optind]);
+ if (err) {
+ error_btrfs_util(err);
return 1;
}
return BTRFS_COMPRESS_ZLIB;
else if (strcmp(optarg, "lzo") == 0)
return BTRFS_COMPRESS_LZO;
+ else if (strcmp(optarg, "zstd") == 0)
+ return BTRFS_COMPRESS_ZSTD;
else {
- fprintf(stderr, "Unknown compress type %s\n", s);
+ error("unknown compression type %s", s);
exit(1);
};
}
-static const char * const cmd_defrag_usage[] = {
+static const char * const cmd_filesystem_defrag_usage[] = {
"btrfs filesystem defragment [options] <file>|<dir> [<file>|<dir>...]",
"Defragment a file or a directory",
"",
- "-v be verbose",
- "-r defragment files recursively",
- "-c[zlib,lzo] compress the file while defragmenting",
- "-f flush data to disk immediately after defragmenting",
- "-s start defragment only from byte onward",
- "-l len defragment only up to len bytes",
- "-t size minimal size of file to be considered for defragmenting",
+ "-v be verbose",
+ "-r defragment files recursively",
+ "-c[zlib,lzo,zstd] compress the file while defragmenting",
+ "-f flush data to disk immediately after defragmenting",
+ "-s start defragment only from byte onward",
+ "-l len defragment only up to len bytes",
+ "-t size target extent size hint (default: 32M)",
+ "",
+ "Warning: most Linux kernels will break up the ref-links of COW data",
+ "(e.g., files copied with 'cp --reflink', snapshots) which may cause",
+ "considerable increase of space usage. See btrfs-filesystem(8) for",
+ "more information.",
NULL
};
-static int do_defrag(int fd, int fancy_ioctl,
- struct btrfs_ioctl_defrag_range_args *range)
-{
- int ret;
-
- if (!fancy_ioctl)
- ret = ioctl(fd, BTRFS_IOC_DEFRAG, NULL);
- else
- ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, range);
-
- return ret;
-}
-
-static int defrag_global_fancy_ioctl;
static struct btrfs_ioctl_defrag_range_args defrag_global_range;
static int defrag_global_verbose;
static int defrag_global_errors;
int typeflag, struct FTW *ftwbuf)
{
int ret = 0;
- int e = 0;
int fd = 0;
if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) {
if (defrag_global_verbose)
printf("%s\n", fpath);
fd = open(fpath, O_RDWR);
- e = errno;
- if (fd < 0)
+ if (fd < 0) {
goto error;
- ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range);
- e = errno;
+ }
+ ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &defrag_global_range);
close(fd);
- if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
- fprintf(stderr, "ERROR: defrag range ioctl not "
- "supported in this kernel, please try "
- "without any options.\n");
+ if (ret && errno == ENOTTY) {
+ error(
+"defrag range ioctl not supported in this kernel version, 2.6.33 and newer is required");
defrag_global_errors++;
return ENOTTY;
}
- if (ret)
+ if (ret) {
goto error;
+ }
}
return 0;
error:
- fprintf(stderr, "ERROR: defrag failed on %s - %s\n", fpath, strerror(e));
+ error("defrag failed on %s: %m", fpath);
defrag_global_errors++;
return 0;
}
-static int cmd_defrag(int argc, char **argv)
+static int cmd_filesystem_defrag(int argc, char **argv)
{
int fd;
int flush = 0;
u64 start = 0;
u64 len = (u64)-1;
- u32 thresh = 0;
+ u64 thresh;
int i;
int recursive = 0;
int ret = 0;
- struct btrfs_ioctl_defrag_range_args range;
- int e = 0;
int compress_type = BTRFS_COMPRESS_NONE;
DIR *dirstream;
+ /*
+ * Kernel has a different default (256K) that is supposed to be safe,
+ * but it does not defragment very well. The 32M will likely lead to
+ * better results and is independent of the kernel default. We have to
+ * use the v2 defrag ioctl.
+ */
+ thresh = SZ_32M;
+
defrag_global_errors = 0;
defrag_global_verbose = 0;
defrag_global_errors = 0;
- defrag_global_fancy_ioctl = 0;
- optind = 1;
while(1) {
int c = getopt(argc, argv, "vrc::fs:l:t:");
if (c < 0)
compress_type = BTRFS_COMPRESS_ZLIB;
if (optarg)
compress_type = parse_compress_type(optarg);
- defrag_global_fancy_ioctl = 1;
break;
case 'f':
flush = 1;
- defrag_global_fancy_ioctl = 1;
break;
case 'v':
defrag_global_verbose = 1;
break;
case 's':
start = parse_size(optarg);
- defrag_global_fancy_ioctl = 1;
break;
case 'l':
len = parse_size(optarg);
- defrag_global_fancy_ioctl = 1;
break;
case 't':
thresh = parse_size(optarg);
- defrag_global_fancy_ioctl = 1;
+ if (thresh > (u32)-1) {
+ warning(
+ "target extent size %llu too big, trimmed to %u",
+ thresh, (u32)-1);
+ thresh = (u32)-1;
+ }
break;
case 'r':
recursive = 1;
break;
default:
- usage(cmd_defrag_usage);
+ usage(cmd_filesystem_defrag_usage);
}
}
if (check_argc_min(argc - optind, 1))
- usage(cmd_defrag_usage);
+ usage(cmd_filesystem_defrag_usage);
- memset(&defrag_global_range, 0, sizeof(range));
+ memset(&defrag_global_range, 0, sizeof(defrag_global_range));
defrag_global_range.start = start;
defrag_global_range.len = len;
- defrag_global_range.extent_thresh = thresh;
+ defrag_global_range.extent_thresh = (u32)thresh;
if (compress_type) {
defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_COMPRESS;
defrag_global_range.compress_type = compress_type;
if (flush)
defrag_global_range.flags |= BTRFS_DEFRAG_RANGE_START_IO;
+ /*
+ * Look for directory arguments and warn if the recursive mode is not
+ * requested, as this is not implemented as recursive defragmentation
+ * in kernel. The stat errors are silent here as we check them below.
+ */
+ if (!recursive) {
+ int found = 0;
+
+ for (i = optind; i < argc; i++) {
+ struct stat st;
+
+ if (stat(argv[i], &st))
+ continue;
+
+ if (S_ISDIR(st.st_mode)) {
+ warning(
+ "directory specified but recursive mode not requested: %s",
+ argv[i]);
+ found = 1;
+ }
+ }
+ if (found) {
+ warning(
+"a directory passed to the defrag ioctl will not process the files\n"
+"recursively but will defragment the subvolume tree and the extent tree.\n"
+"If this is not intended, please use option -r .");
+ }
+ }
+
for (i = optind; i < argc; i++) {
struct stat st;
+ int defrag_err = 0;
dirstream = NULL;
fd = open_file_or_dir(argv[i], &dirstream);
if (fd < 0) {
- fprintf(stderr, "ERROR: failed to open %s - %s\n", argv[i],
- strerror(errno));
- defrag_global_errors++;
- close_file_or_dir(fd, dirstream);
- continue;
+ error("cannot open %s: %m", argv[i]);
+ ret = -errno;
+ goto next;
}
- if (fstat(fd, &st)) {
- fprintf(stderr, "ERROR: failed to stat %s - %s\n",
- argv[i], strerror(errno));
- defrag_global_errors++;
- close_file_or_dir(fd, dirstream);
- continue;
+
+ ret = fstat(fd, &st);
+ if (ret) {
+ error("failed to stat %s: %m", argv[i]);
+ ret = -errno;
+ goto next;
}
if (!(S_ISDIR(st.st_mode) || S_ISREG(st.st_mode))) {
- fprintf(stderr,
- "ERROR: %s is not a directory or a regular file\n",
- argv[i]);
- defrag_global_errors++;
- close_file_or_dir(fd, dirstream);
- continue;
+ error("%s is not a directory or a regular file",
+ argv[i]);
+ ret = -EINVAL;
+ goto next;
}
- if (recursive) {
- if (S_ISDIR(st.st_mode)) {
- ret = nftw(argv[i], defrag_callback, 10,
+ if (recursive && S_ISDIR(st.st_mode)) {
+ ret = nftw(argv[i], defrag_callback, 10,
FTW_MOUNT | FTW_PHYS);
- if (ret == ENOTTY)
- exit(1);
- /* errors are handled in the callback */
- ret = 0;
- } else {
- if (defrag_global_verbose)
- printf("%s\n", argv[i]);
- ret = do_defrag(fd, defrag_global_fancy_ioctl,
- &defrag_global_range);
- e = errno;
- }
+ if (ret == ENOTTY)
+ exit(1);
+ /* errors are handled in the callback */
+ ret = 0;
} else {
if (defrag_global_verbose)
printf("%s\n", argv[i]);
- ret = do_defrag(fd, defrag_global_fancy_ioctl,
+ ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE,
&defrag_global_range);
- e = errno;
- }
- close_file_or_dir(fd, dirstream);
- if (ret && e == ENOTTY && defrag_global_fancy_ioctl) {
- fprintf(stderr, "ERROR: defrag range ioctl not "
- "supported in this kernel, please try "
- "without any options.\n");
- defrag_global_errors++;
- break;
+ defrag_err = errno;
+ if (ret && defrag_err == ENOTTY) {
+ error(
+"defrag range ioctl not supported in this kernel version, 2.6.33 and newer is required");
+ defrag_global_errors++;
+ close_file_or_dir(fd, dirstream);
+ break;
+ }
+ if (ret) {
+ error("defrag failed on %s: %s", argv[i],
+ strerror(defrag_err));
+ goto next;
+ }
}
- if (ret) {
- fprintf(stderr, "ERROR: defrag failed on %s - %s\n",
- argv[i], strerror(e));
+next:
+ if (ret)
defrag_global_errors++;
- }
+ close_file_or_dir(fd, dirstream);
}
- if (defrag_global_verbose)
- printf("%s\n", PACKAGE_STRING);
+
if (defrag_global_errors)
fprintf(stderr, "total %d failures\n", defrag_global_errors);
return !!defrag_global_errors;
}
-static const char * const cmd_resize_usage[] = {
+static const char * const cmd_filesystem_resize_usage[] = {
"btrfs filesystem resize [devid:][+/-]<newsize>[kKmMgGtTpPeE]|[devid:]max <path>",
"Resize a filesystem",
"If 'max' is passed, the filesystem will occupy all available space",
NULL
};
-static int cmd_resize(int argc, char **argv)
+static int cmd_filesystem_resize(int argc, char **argv)
{
struct btrfs_ioctl_vol_args args;
int fd, res, len, e;
DIR *dirstream = NULL;
struct stat st;
- if (check_argc_exact(argc, 3))
- usage(cmd_resize_usage);
+ clean_args_no_options_relaxed(argc, argv);
- amount = argv[1];
- path = argv[2];
+ if (check_argc_exact(argc - optind, 2))
+ usage(cmd_filesystem_resize_usage);
+
+ amount = argv[optind];
+ path = argv[optind + 1];
len = strlen(amount);
if (len == 0 || len >= BTRFS_VOL_NAME_MAX) {
- fprintf(stderr, "ERROR: size value too long ('%s)\n",
- amount);
+ error("resize value too long (%s)", amount);
return 1;
}
res = stat(path, &st);
if (res < 0) {
- fprintf(stderr, "ERROR: resize: cannot stat %s: %s\n",
- path, strerror(errno));
+ error("resize: cannot stat %s: %m", path);
return 1;
}
if (!S_ISDIR(st.st_mode)) {
- fprintf(stderr,
- "ERROR: resize works on mounted filesystems and accepts only\n"
+ error("resize works on mounted filesystems and accepts only\n"
"directories as argument. Passing file containing a btrfs image\n"
"would resize the underlying filesystem instead of the image.\n");
return 1;
}
- fd = open_file_or_dir(path, &dirstream);
- if (fd < 0) {
- fprintf(stderr, "ERROR: can't access '%s'\n", path);
+ fd = btrfs_open_dir(path, &dirstream, 1);
+ if (fd < 0)
return 1;
- }
printf("Resize '%s' of '%s'\n", path, amount);
memset(&args, 0, sizeof(args));
e = errno;
close_file_or_dir(fd, dirstream);
if( res < 0 ){
- fprintf(stderr, "ERROR: unable to resize '%s' - %s\n",
- path, strerror(e));
+ switch (e) {
+ case EFBIG:
+ error("unable to resize '%s': no enough free space",
+ path);
+ break;
+ default:
+ error("unable to resize '%s': %m", path);
+ break;
+ }
return 1;
} else if (res > 0) {
const char *err_str = btrfs_err_str(res);
if (err_str) {
- fprintf(stderr, "ERROR: btrfs error resizing '%s' - %s\n",
- path, err_str);
+ error("resizing of '%s' failed: %s", path, err_str);
} else {
- fprintf(stderr,
- "ERROR: btrfs error resizing '%s' - unknown btrfs_err_code %d\n",
+ error("resizing of '%s' failed: unknown error %d",
path, res);
}
return 1;
return 0;
}
-static const char * const cmd_label_usage[] = {
+static const char * const cmd_filesystem_label_usage[] = {
"btrfs filesystem label [<device>|<mount_point>] [<newlabel>]",
"Get or change the label of a filesystem",
"With one argument, get the label of filesystem on <device>.",
NULL
};
-static int cmd_label(int argc, char **argv)
+static int cmd_filesystem_label(int argc, char **argv)
{
- if (check_argc_min(argc, 2) || check_argc_max(argc, 3))
- usage(cmd_label_usage);
+ clean_args_no_options(argc, argv, cmd_filesystem_label_usage);
+
+ if (check_argc_min(argc - optind, 1) ||
+ check_argc_max(argc - optind, 2))
+ usage(cmd_filesystem_label_usage);
- if (argc > 2) {
- return set_label(argv[1], argv[2]);
+ if (argc - optind > 1) {
+ return set_label(argv[optind], argv[optind + 1]);
} else {
char label[BTRFS_LABEL_SIZE];
int ret;
- ret = get_label(argv[1], label);
+ ret = get_label(argv[optind], label);
if (!ret)
fprintf(stdout, "%s\n", label);
const struct cmd_group filesystem_cmd_group = {
filesystem_cmd_group_usage, filesystem_cmd_group_info, {
{ "df", cmd_filesystem_df, cmd_filesystem_df_usage, NULL, 0 },
- { "show", cmd_show, cmd_show_usage, NULL, 0 },
- { "sync", cmd_sync, cmd_sync_usage, NULL, 0 },
- { "defragment", cmd_defrag, cmd_defrag_usage, NULL, 0 },
- { "balance", cmd_balance, NULL, &balance_cmd_group, 1 },
- { "resize", cmd_resize, cmd_resize_usage, NULL, 0 },
- { "label", cmd_label, cmd_label_usage, NULL, 0 },
+ { "du", cmd_filesystem_du, cmd_filesystem_du_usage, NULL, 0 },
+ { "show", cmd_filesystem_show, cmd_filesystem_show_usage, NULL,
+ 0 },
+ { "sync", cmd_filesystem_sync, cmd_filesystem_sync_usage, NULL,
+ 0 },
+ { "defragment", cmd_filesystem_defrag,
+ cmd_filesystem_defrag_usage, NULL, 0 },
+ { "balance", cmd_balance, NULL, &balance_cmd_group,
+ CMD_HIDDEN },
+ { "resize", cmd_filesystem_resize, cmd_filesystem_resize_usage,
+ NULL, 0 },
+ { "label", cmd_filesystem_label, cmd_filesystem_label_usage,
+ NULL, 0 },
{ "usage", cmd_filesystem_usage,
cmd_filesystem_usage_usage, NULL, 0 },
projects / platform / upstream / btrfs-progs.git / blobdiff