#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 "cmds-fi-du.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];
-
- while (seen) {
- if (memcmp(seen->fsid, fsid, BTRFS_FSID_SIZE) == 0)
- return 1;
-
- seen = seen->next;
- }
-
- return 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
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
if (ret < 0) {
- error("cannot get space info: %s\n", strerror(errno));
+ error("cannot get space info: %m");
free(sargs);
return -errno;
}
sargs->total_spaces = 0;
ret = ioctl(fd, BTRFS_IOC_SPACE_INFO, sargs);
if (ret < 0) {
- error("cannot get space info with %llu slots: %s",
- count, strerror(errno));
+ error("cannot get space info with %llu slots: %m",
+ count);
free(sargs);
return -errno;
}
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];
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;
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);
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)
goto out;
/* skip all fs already shown as mounted fs */
- if (is_seen_fsid(fs_info_arg.fsid))
+ if (is_seen_fsid(fs_info_arg.fsid, seen_fsid_hash))
continue;
ret = get_label_mounted(mnt->mnt_dir, label);
if ((fd != -1) && !get_df(fd, &space_info_arg)) {
print_one_fs(&fs_info_arg, dev_info_arg,
space_info_arg, label, unit_mode);
- kfree(space_info_arg);
+ free(space_info_arg);
memset(label, 0, sizeof(label));
found = 1;
}
return !found;
}
-static int dev_to_fsid(char *dev, __u8 *fsid)
-{
- struct btrfs_super_block *disk_super;
- char buf[BTRFS_SUPER_INFO_SIZE];
- int ret;
- int fd;
-
- fd = open(dev, O_RDONLY);
- if (fd < 0) {
- ret = -errno;
- return ret;
- }
-
- disk_super = (struct btrfs_super_block *)buf;
- ret = btrfs_read_dev_super(fd, disk_super,
- BTRFS_SUPER_INFO_OFFSET, SBREAD_DEFAULT);
- if (ret)
- goto out;
-
- memcpy(fsid, disk_super->fsid, BTRFS_FSID_SIZE);
- ret = 0;
-
-out:
- close(fd);
- 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 = calloc(1, sizeof(*fs_copy));
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;
goto out;
devs_only:
- ret = btrfs_scan_lblkid();
+ ret = btrfs_scan_devices();
if (ret) {
- error("blkid device scan returned %d\n", ret);
+ error("blkid device scan returned %d", ret);
return 1;
}
free_fs_devices(fs_devices);
}
out:
- free_seen_fsid();
+ free_seen_fsid(seen_fsid_hash);
return ret;
}
static int cmd_filesystem_sync(int argc, char **argv)
{
- int fd, res, e;
- char *path;
- DIR *dirstream = NULL;
+ enum btrfs_util_error err;
clean_args_no_options(argc, argv, cmd_filesystem_sync_usage);
if (check_argc_exact(argc - optind, 1))
usage(cmd_filesystem_sync_usage);
- path = argv[optind];
-
- fd = btrfs_open_dir(path, &dirstream, 1);
- if (fd < 0)
- return 1;
-
- res = ioctl(fd, BTRFS_IOC_SYNC);
- e = errno;
- close_file_or_dir(fd, dirstream);
- if( res < 0 ){
- error("sync ioctl failed on '%s': %s", 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 {
error("unknown compression type %s", s);
exit(1);
"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 target extent size hint (default: 32M)",
+ "-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 err = 0;
int fd = 0;
if ((typeflag == FTW_F) && S_ISREG(sb->st_mode)) {
printf("%s\n", fpath);
fd = open(fpath, O_RDWR);
if (fd < 0) {
- err = errno;
goto error;
}
- ret = do_defrag(fd, defrag_global_fancy_ioctl, &defrag_global_range);
+ ret = ioctl(fd, BTRFS_IOC_DEFRAG_RANGE, &defrag_global_range);
close(fd);
- if (ret && errno == ENOTTY && defrag_global_fancy_ioctl) {
- error("defrag range ioctl not "
- "supported in this kernel, please try "
- "without any options.");
+ 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) {
- err = errno;
goto error;
}
}
return 0;
error:
- error("defrag failed on %s: %s", fpath, strerror(err));
+ error("defrag failed on %s: %m", fpath);
defrag_global_errors++;
return 0;
}
int i;
int recursive = 0;
int ret = 0;
- 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.
+ * better results and is independent of the kernel default. We have to
+ * use the v2 defrag ioctl.
*/
- thresh = 32 * 1024 * 1024;
+ thresh = SZ_32M;
defrag_global_errors = 0;
defrag_global_verbose = 0;
defrag_global_errors = 0;
- defrag_global_fancy_ioctl = 0;
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);
thresh, (u32)-1);
thresh = (u32)-1;
}
- defrag_global_fancy_ioctl = 1;
break;
case 'r':
recursive = 1;
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) {
- error("cannot 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)) {
- error("failed to stat %s: %s",
- 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))) {
- error("%s is not a directory or a regular file\n",
+ error("%s is not a directory or a regular file",
argv[i]);
- defrag_global_errors++;
- close_file_or_dir(fd, dirstream);
- continue;
+ 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) {
- error("defrag range ioctl not "
- "supported in this kernel, please try "
- "without any options.");
- 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) {
- error("defrag failed on %s: %s", argv[i], strerror(e));
+next:
+ if (ret)
defrag_global_errors++;
- }
+ close_file_or_dir(fd, dirstream);
}
+
if (defrag_global_errors)
fprintf(stderr, "total %d failures\n", defrag_global_errors);
DIR *dirstream = NULL;
struct stat st;
- clean_args_no_options_relaxed(argc, argv, cmd_filesystem_resize_usage);
+ clean_args_no_options_relaxed(argc, argv);
if (check_argc_exact(argc - optind, 2))
usage(cmd_filesystem_resize_usage);
res = stat(path, &st);
if (res < 0) {
- error("resize: cannot stat %s: %s", path, strerror(errno));
+ error("resize: cannot stat %s: %m", path);
return 1;
}
if (!S_ISDIR(st.st_mode)) {
path);
break;
default:
- error("unable to resize '%s': %s", path, strerror(e));
+ error("unable to resize '%s': %m", path);
break;
}
return 1;
projects / platform / upstream / btrfs-progs.git / blobdiff