#include "kerncompat.h"
-#ifndef __CHECKER__
#include <sys/ioctl.h>
#include <sys/mount.h>
#include "ioctl.h"
-#endif
-
#include <stdio.h>
#include <stdlib.h>
#include <sys/types.h>
#include <unistd.h>
#include <getopt.h>
#include <uuid/uuid.h>
-#include <linux/fs.h>
#include <ctype.h>
#include <attr/xattr.h>
#include <blkid/blkid.h>
#include <ftw.h>
-#include "kerncompat.h"
#include "ctree.h"
#include "disk-io.h"
#include "volumes.h"
static u64 index_cnt = 2;
+#define DEFAULT_MKFS_FEATURES (BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF)
+
+#define DEFAULT_MKFS_LEAF_SIZE 16384
+
struct directory_name_entry {
char *dir_name;
char *path;
int ret;
trans = btrfs_start_transaction(root, 1);
- bytes_used = btrfs_super_bytes_used(&root->fs_info->super_copy);
+ bytes_used = btrfs_super_bytes_used(root->fs_info->super_copy);
root->fs_info->system_allocs = 1;
ret = btrfs_make_block_group(trans, root, bytes_used,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_METADATA |
BTRFS_BLOCK_GROUP_DATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr,
+ "no space to alloc data/metadata chunk\n");
+ goto err;
+ }
BUG_ON(ret);
ret = btrfs_make_block_group(trans, root, 0,
BTRFS_BLOCK_GROUP_METADATA |
ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_METADATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "no space to alloc metadata chunk\n");
+ goto err;
+ }
BUG_ON(ret);
ret = btrfs_make_block_group(trans, root, 0,
BTRFS_BLOCK_GROUP_METADATA,
ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
&chunk_start, &chunk_size,
BTRFS_BLOCK_GROUP_DATA);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "no space to alloc data chunk\n");
+ goto err;
+ }
BUG_ON(ret);
ret = btrfs_make_block_group(trans, root, 0,
BTRFS_BLOCK_GROUP_DATA,
location.offset = (u64)-1;
ret = btrfs_insert_dir_item(trans, root->fs_info->tree_root,
"default", 7,
- btrfs_super_root_dir(&root->fs_info->super_copy),
+ btrfs_super_root_dir(root->fs_info->super_copy),
&location, BTRFS_FT_DIR, 0);
if (ret)
goto err;
return ret;
}
-static int recow_roots(struct btrfs_trans_handle *trans,
- struct btrfs_root *root)
+static void __recow_root(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root)
{
int ret;
struct extent_buffer *tmp;
- struct btrfs_fs_info *info = root->fs_info;
-
- ret = __btrfs_cow_block(trans, info->fs_root, info->fs_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->tree_root, info->tree_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->extent_root,
- info->extent_root->node, NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->chunk_root, info->chunk_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
-
- ret = __btrfs_cow_block(trans, info->dev_root, info->dev_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
+ if (trans->transid != btrfs_root_generation(&root->root_item)) {
+ extent_buffer_get(root->node);
+ ret = __btrfs_cow_block(trans, root, root->node,
+ NULL, 0, &tmp, 0, 0);
+ BUG_ON(ret);
+ free_extent_buffer(tmp);
+ }
+}
- ret = __btrfs_cow_block(trans, info->csum_root, info->csum_root->node,
- NULL, 0, &tmp, 0, 0);
- BUG_ON(ret);
- free_extent_buffer(tmp);
+static void recow_roots(struct btrfs_trans_handle *trans,
+ struct btrfs_root *root)
+{
+ struct btrfs_fs_info *info = root->fs_info;
- return 0;
+ __recow_root(trans, info->fs_root);
+ __recow_root(trans, info->tree_root);
+ __recow_root(trans, info->extent_root);
+ __recow_root(trans, info->chunk_root);
+ __recow_root(trans, info->dev_root);
+ __recow_root(trans, info->csum_root);
}
static int create_one_raid_group(struct btrfs_trans_handle *trans,
ret = btrfs_alloc_chunk(trans, root->fs_info->extent_root,
&chunk_start, &chunk_size, type);
+ if (ret == -ENOSPC) {
+ fprintf(stderr, "not enough free space\n");
+ exit(1);
+ }
BUG_ON(ret);
ret = btrfs_make_block_group(trans, root->fs_info->extent_root, 0,
type, BTRFS_FIRST_CHUNK_TREE_OBJECTID,
int data_profile_opt, u64 metadata_profile,
int metadata_profile_opt, int mixed, int ssd)
{
- u64 num_devices = btrfs_super_num_devices(&root->fs_info->super_copy);
- u64 allowed = 0;
- u64 devices_for_raid = num_devices;
+ u64 num_devices = btrfs_super_num_devices(root->fs_info->super_copy);
int ret;
- /*
- * Set default profiles according to number of added devices.
- * For mixed groups defaults are single/single.
- */
- if (!metadata_profile_opt && !mixed) {
- if (num_devices == 1 && ssd)
- printf("Detected a SSD, turning off metadata "
- "duplication. Mkfs with -m dup if you want to "
- "force metadata duplication.\n");
- metadata_profile = (num_devices > 1) ?
- BTRFS_BLOCK_GROUP_RAID1 : (ssd) ? 0: BTRFS_BLOCK_GROUP_DUP;
- }
- if (!data_profile_opt && !mixed) {
- data_profile = (num_devices > 1) ?
- BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
- }
-
- if (devices_for_raid > 4)
- devices_for_raid = 4;
-
- switch (devices_for_raid) {
- default:
- case 4:
- allowed |= BTRFS_BLOCK_GROUP_RAID10;
- case 3:
- allowed |= BTRFS_BLOCK_GROUP_RAID6;
- case 2:
- allowed |= BTRFS_BLOCK_GROUP_RAID0 | BTRFS_BLOCK_GROUP_RAID1 |
- BTRFS_BLOCK_GROUP_RAID5;
- break;
- case 1:
- allowed |= BTRFS_BLOCK_GROUP_DUP;
- }
-
- if (metadata_profile & ~allowed) {
- fprintf(stderr, "unable to create FS with metadata "
- "profile %llu (have %llu devices)\n", metadata_profile,
- num_devices);
- exit(1);
- }
- if (data_profile & ~allowed) {
- fprintf(stderr, "unable to create FS with data "
- "profile %llu (have %llu devices)\n", data_profile,
- num_devices);
- exit(1);
- }
-
- /* allow dup'ed data chunks only in mixed mode */
- if (!mixed && (data_profile & BTRFS_BLOCK_GROUP_DUP)) {
- fprintf(stderr, "dup for data is allowed only in mixed mode\n");
- exit(1);
- }
-
- if (allowed & metadata_profile) {
+ if (metadata_profile) {
u64 meta_flags = BTRFS_BLOCK_GROUP_METADATA;
ret = create_one_raid_group(trans, root,
BTRFS_BLOCK_GROUP_SYSTEM |
- (allowed & metadata_profile));
+ metadata_profile);
BUG_ON(ret);
if (mixed)
meta_flags |= BTRFS_BLOCK_GROUP_DATA;
ret = create_one_raid_group(trans, root, meta_flags |
- (allowed & metadata_profile));
+ metadata_profile);
BUG_ON(ret);
- ret = recow_roots(trans, root);
- BUG_ON(ret);
}
- if (!mixed && num_devices > 1 && (allowed & data_profile)) {
+ if (!mixed && num_devices > 1 && data_profile) {
ret = create_one_raid_group(trans, root,
BTRFS_BLOCK_GROUP_DATA |
- (allowed & data_profile));
+ data_profile);
BUG_ON(ret);
}
+ recow_roots(trans, root);
+
return 0;
}
return 0;
}
+
+static void print_usage(void) __attribute__((noreturn));
static void print_usage(void)
{
fprintf(stderr, "usage: mkfs.btrfs [options] dev [ dev ... ]\n");
fprintf(stderr, "options:\n");
fprintf(stderr, "\t -A --alloc-start the offset to start the FS\n");
fprintf(stderr, "\t -b --byte-count total number of bytes in the FS\n");
- fprintf(stderr, "\t -d --data data profile, raid0, raid1, raid10, dup or single\n");
+ fprintf(stderr, "\t -d --data data profile, raid0, raid1, raid5, raid6, raid10, dup or single\n");
+ fprintf(stderr, "\t -f --force force overwrite of existing filesystem\n");
fprintf(stderr, "\t -l --leafsize size of btree leaves\n");
fprintf(stderr, "\t -L --label set a label\n");
fprintf(stderr, "\t -m --metadata metadata profile, values like data profile\n");
fprintf(stderr, "\t -M --mixed mix metadata and data together\n");
fprintf(stderr, "\t -n --nodesize size of btree nodes\n");
- fprintf(stderr, "\t -s --sectorsize min block allocation\n");
+ fprintf(stderr, "\t -s --sectorsize min block allocation (may not mountable by current kernel)\n");
fprintf(stderr, "\t -r --rootdir the source directory\n");
fprintf(stderr, "\t -K --nodiscard do not perform whole device TRIM\n");
+ fprintf(stderr, "\t -O --features comma separated list of filesystem features\n");
fprintf(stderr, "\t -V --version print the mkfs.btrfs version and exit\n");
fprintf(stderr, "%s\n", BTRFS_BUILD_VERSION);
exit(1);
}
+static void print_version(void) __attribute__((noreturn));
static void print_version(void)
{
fprintf(stderr, "mkfs.btrfs, part of %s\n", BTRFS_BUILD_VERSION);
static struct option long_options[] = {
{ "alloc-start", 1, NULL, 'A'},
{ "byte-count", 1, NULL, 'b' },
+ { "force", 0, NULL, 'f' },
{ "leafsize", 1, NULL, 'l' },
{ "label", 1, NULL, 'L'},
{ "metadata", 1, NULL, 'm' },
{ "version", 0, NULL, 'V' },
{ "rootdir", 1, NULL, 'r' },
{ "nodiscard", 0, NULL, 'K' },
- { 0, 0, 0, 0}
+ { "features", 0, NULL, 'O' },
+ { NULL, 0, NULL, 0}
};
static int add_directory_items(struct btrfs_trans_handle *trans,
return ret;
}
-static int custom_alloc_extent(struct btrfs_root *root, u64 num_bytes,
- u64 hint_byte, struct btrfs_key *ins)
-{
- u64 start;
- u64 end;
- u64 last = hint_byte;
- int ret;
- int wrapped = 0;
- struct btrfs_block_group_cache *cache;
-
- while (1) {
- ret = find_first_extent_bit(&root->fs_info->free_space_cache,
- last, &start, &end, EXTENT_DIRTY);
- if (ret) {
- if (wrapped++ == 0) {
- last = 0;
- continue;
- } else {
- goto fail;
- }
- }
-
- start = max(last, start);
- last = end + 1;
- if (last - start < num_bytes)
- continue;
-
- last = start + num_bytes;
- if (test_range_bit(&root->fs_info->pinned_extents,
- start, last - 1, EXTENT_DIRTY, 0))
- continue;
-
- cache = btrfs_lookup_block_group(root->fs_info, start);
- BUG_ON(!cache);
- if (cache->flags & BTRFS_BLOCK_GROUP_SYSTEM ||
- last > cache->key.objectid + cache->key.offset) {
- last = cache->key.objectid + cache->key.offset;
- continue;
- }
-
- if (cache->flags & (BTRFS_BLOCK_GROUP_SYSTEM |
- BTRFS_BLOCK_GROUP_METADATA)) {
- last = cache->key.objectid + cache->key.offset;
- continue;
- }
-
- clear_extent_dirty(&root->fs_info->free_space_cache,
- start, start + num_bytes - 1, 0);
-
- ins->objectid = start;
- ins->offset = num_bytes;
- ins->type = BTRFS_EXTENT_ITEM_KEY;
- return 0;
- }
-fail:
- fprintf(stderr, "not enough free space\n");
- return -ENOSPC;
-}
-
-static int record_file_extent(struct btrfs_trans_handle *trans,
- struct btrfs_root *root, u64 objectid,
- struct btrfs_inode_item *inode,
- u64 file_pos, u64 disk_bytenr,
- u64 num_bytes)
-{
- int ret;
- struct btrfs_fs_info *info = root->fs_info;
- struct btrfs_root *extent_root = info->extent_root;
- struct extent_buffer *leaf;
- struct btrfs_file_extent_item *fi;
- struct btrfs_key ins_key;
- struct btrfs_path path;
- struct btrfs_extent_item *ei;
-
- btrfs_init_path(&path);
-
- ins_key.objectid = objectid;
- ins_key.offset = 0;
- btrfs_set_key_type(&ins_key, BTRFS_EXTENT_DATA_KEY);
- ret = btrfs_insert_empty_item(trans, root, &path, &ins_key,
- sizeof(*fi));
- if (ret)
- goto fail;
- leaf = path.nodes[0];
- fi = btrfs_item_ptr(leaf, path.slots[0],
- struct btrfs_file_extent_item);
- btrfs_set_file_extent_generation(leaf, fi, trans->transid);
- btrfs_set_file_extent_type(leaf, fi, BTRFS_FILE_EXTENT_REG);
- btrfs_set_file_extent_disk_bytenr(leaf, fi, disk_bytenr);
- btrfs_set_file_extent_disk_num_bytes(leaf, fi, num_bytes);
- btrfs_set_file_extent_offset(leaf, fi, 0);
- btrfs_set_file_extent_num_bytes(leaf, fi, num_bytes);
- btrfs_set_file_extent_ram_bytes(leaf, fi, num_bytes);
- btrfs_set_file_extent_compression(leaf, fi, 0);
- btrfs_set_file_extent_encryption(leaf, fi, 0);
- btrfs_set_file_extent_other_encoding(leaf, fi, 0);
- btrfs_mark_buffer_dirty(leaf);
-
- btrfs_release_path(root, &path);
-
- ins_key.objectid = disk_bytenr;
- ins_key.offset = num_bytes;
- ins_key.type = BTRFS_EXTENT_ITEM_KEY;
-
- ret = btrfs_insert_empty_item(trans, extent_root, &path,
- &ins_key, sizeof(*ei));
- if (ret == 0) {
- leaf = path.nodes[0];
- ei = btrfs_item_ptr(leaf, path.slots[0],
- struct btrfs_extent_item);
-
- btrfs_set_extent_refs(leaf, ei, 0);
- btrfs_set_extent_generation(leaf, ei, trans->transid);
- btrfs_set_extent_flags(leaf, ei, BTRFS_EXTENT_FLAG_DATA);
-
- btrfs_mark_buffer_dirty(leaf);
- ret = btrfs_update_block_group(trans, root, disk_bytenr,
- num_bytes, 1, 0);
- if (ret)
- goto fail;
- } else if (ret != -EEXIST) {
- goto fail;
- }
-
- ret = btrfs_inc_extent_ref(trans, root, disk_bytenr, num_bytes, 0,
- root->root_key.objectid,
- objectid, 0);
-fail:
- btrfs_release_path(root, &path);
- return ret;
-}
static int add_symbolic_link(struct btrfs_trans_handle *trans,
struct btrfs_root *root,
int ret = -1;
ssize_t ret_read;
u64 bytes_read = 0;
- char *buffer = NULL;
struct btrfs_key key;
int blocks;
u32 sectorsize = root->sectorsize;
u64 first_block = 0;
- u64 num_blocks = 0;
+ u64 file_pos = 0;
+ u64 cur_bytes;
+ u64 total_bytes;
+ struct extent_buffer *eb = NULL;
int fd;
fd = open(path_name, O_RDONLY);
blocks += 1;
if (st->st_size <= BTRFS_MAX_INLINE_DATA_SIZE(root)) {
- buffer = malloc(st->st_size);
+ char *buffer = malloc(st->st_size);
ret_read = pread64(fd, buffer, st->st_size, bytes_read);
if (ret_read == -1) {
fprintf(stderr, "%s read failed\n", path_name);
+ free(buffer);
goto end;
}
ret = btrfs_insert_inline_extent(trans, root, objectid, 0,
buffer, st->st_size);
+ free(buffer);
goto end;
}
- ret = custom_alloc_extent(root, blocks * sectorsize, 0, &key);
+ /* round up our st_size to the FS blocksize */
+ total_bytes = (u64)blocks * sectorsize;
+
+ /*
+ * do our IO in extent buffers so it can work
+ * against any raid type
+ */
+ eb = malloc(sizeof(*eb) + sectorsize);
+ if (!eb) {
+ ret = -ENOMEM;
+ goto end;
+ }
+ memset(eb, 0, sizeof(*eb) + sectorsize);
+
+again:
+
+ /*
+ * keep our extent size at 1MB max, this makes it easier to work inside
+ * the tiny block groups created during mkfs
+ */
+ cur_bytes = min(total_bytes, 1024ULL * 1024);
+ ret = btrfs_reserve_extent(trans, root, cur_bytes, 0, 0, (u64)-1,
+ &key, 1);
if (ret)
goto end;
first_block = key.objectid;
bytes_read = 0;
- buffer = malloc(sectorsize);
- do {
- memset(buffer, 0, sectorsize);
- ret_read = pread64(fd, buffer, sectorsize, bytes_read);
+ while (bytes_read < cur_bytes) {
+
+ memset(eb->data, 0, sectorsize);
+
+ ret_read = pread64(fd, eb->data, sectorsize, file_pos + bytes_read);
if (ret_read == -1) {
fprintf(stderr, "%s read failed\n", path_name);
goto end;
}
- ret = pwrite64(out_fd, buffer, sectorsize,
- first_block + bytes_read);
- if (ret != sectorsize) {
- fprintf(stderr, "output file write failed\n");
- goto end;
- }
+ eb->start = first_block + bytes_read;
+ eb->len = sectorsize;
- /* checksum for file data */
+ /*
+ * we're doing the csum before we record the extent, but
+ * that's ok
+ */
ret = btrfs_csum_file_block(trans, root->fs_info->csum_root,
- first_block + (blocks * sectorsize),
- first_block + bytes_read,
- buffer, sectorsize);
+ first_block + bytes_read + sectorsize,
+ first_block + bytes_read,
+ eb->data, sectorsize);
+ if (ret)
+ goto end;
+
+ ret = write_and_map_eb(trans, root, eb);
if (ret) {
- fprintf(stderr, "%s checksum failed\n", path_name);
+ fprintf(stderr, "output file write failed\n");
goto end;
}
- bytes_read += ret_read;
- num_blocks++;
- } while (ret_read == sectorsize);
+ bytes_read += sectorsize;
+ }
- if (num_blocks > 0) {
- ret = record_file_extent(trans, root, objectid, btrfs_inode,
- first_block, first_block,
- blocks * sectorsize);
+ if (bytes_read) {
+ ret = btrfs_record_file_extent(trans, root, objectid, btrfs_inode,
+ file_pos, first_block, cur_bytes);
if (ret)
goto end;
+
}
+ file_pos += cur_bytes;
+ total_bytes -= cur_bytes;
+
+ if (total_bytes)
+ goto again;
+
end:
- if (buffer)
- free(buffer);
+ free(eb);
close(fd);
return ret;
}
btrfs_set_inode_size(leaf, inode_item, root_dir_inode_size);
btrfs_mark_buffer_dirty(leaf);
- btrfs_release_path(root, &path);
+ btrfs_release_path(&path);
do {
parent_dir_entry = list_entry(dir_head->list.next,
if (size_of_data < minimum_data_chunk_size)
size_of_data = minimum_data_chunk_size;
+
ret = btrfs_alloc_data_chunk(trans, root->fs_info->extent_root,
&chunk_start, size_of_data, data_type);
BUG_ON(ret);
struct directory_name_entry dir_head;
+ struct directory_name_entry *dir_entry = NULL;
+
ret = lstat(source_dir, &root_st);
if (ret) {
fprintf(stderr, "unable to lstat the %s\n", source_dir);
printf("Making image is completed.\n");
return 0;
fail:
+ while (!list_empty(&dir_head.list)) {
+ dir_entry = list_entry(dir_head.list.next,
+ struct directory_name_entry, list);
+ list_del(&dir_entry->list);
+ free(dir_entry);
+ }
fprintf(stderr, "Making image is aborted.\n");
return -1;
}
u64 allocated_meta_size = 8 * 1024 * 1024; /* 8MB */
u64 allocated_total_size = 20 * 1024 * 1024; /* 20MB */
u64 num_of_meta_chunks = 0;
+ u64 num_of_data_chunks = 0;
u64 num_of_allocated_meta_chunks =
allocated_meta_size / default_chunk_size;
exit(1);
}
+ num_of_data_chunks = (dir_size + default_chunk_size - 1) /
+ default_chunk_size;
+
num_of_meta_chunks = (dir_size / 2) / default_chunk_size;
if (((dir_size / 2) % default_chunk_size) != 0)
num_of_meta_chunks++;
else
num_of_meta_chunks -= num_of_allocated_meta_chunks;
- total_size = allocated_total_size + dir_size +
+ total_size = allocated_total_size +
+ (num_of_data_chunks * default_chunk_size) +
(num_of_meta_chunks * default_chunk_size);
*num_of_meta_chunks_ret = num_of_meta_chunks;
-
+ *size_of_data_ret = num_of_data_chunks * default_chunk_size;
return total_size;
}
static int is_ssd(const char *file)
{
- char *devname;
blkid_probe probe;
- char *dev;
- char path[PATH_MAX];
- dev_t disk;
+ char wholedisk[32];
+ char sysfs_path[PATH_MAX];
+ dev_t devno;
int fd;
char rotational;
+ int ret;
probe = blkid_new_probe_from_filename(file);
if (!probe)
return 0;
- /*
- * We want to use blkid_devno_to_wholedisk() but it's broken for some
- * reason on F17 at least so we'll do this trickery
- */
- disk = blkid_probe_get_wholedisk_devno(probe);
- if (!disk)
+ /* Device number of this disk (possibly a partition) */
+ devno = blkid_probe_get_devno(probe);
+ if (!devno) {
+ blkid_free_probe(probe);
return 0;
+ }
- devname = blkid_devno_to_devname(disk);
- if (!devname)
+ /* Get whole disk name (not full path) for this devno */
+ ret = blkid_devno_to_wholedisk(devno,
+ wholedisk, sizeof(wholedisk), NULL);
+ if (ret) {
+ blkid_free_probe(probe);
return 0;
+ }
- dev = strrchr(devname, '/');
- dev++;
-
- snprintf(path, PATH_MAX, "/sys/block/%s/queue/rotational", dev);
+ snprintf(sysfs_path, PATH_MAX, "/sys/block/%s/queue/rotational",
+ wholedisk);
- free(devname);
blkid_free_probe(probe);
- fd = open(path, O_RDONLY);
+ fd = open(sysfs_path, O_RDONLY);
if (fd < 0) {
return 0;
}
return !atoi((const char *)&rotational);
}
+#define BTRFS_FEATURE_LIST_ALL (1ULL << 63)
+
+static const struct btrfs_fs_feature {
+ const char *name;
+ u64 flag;
+ const char *desc;
+} mkfs_features[] = {
+ { "mixed-bg", BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS,
+ "mixed data and metadata block groups" },
+ { "extref", BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF,
+ "increased hardlink limit per file to 65536" },
+ { "raid56", BTRFS_FEATURE_INCOMPAT_RAID56,
+ "raid56 extended format" },
+ { "skinny-metadata", BTRFS_FEATURE_INCOMPAT_SKINNY_METADATA,
+ "reduced-size metadata extent refs" },
+ { "no-holes", BTRFS_FEATURE_INCOMPAT_NO_HOLES,
+ "no explicit hole extents for files" },
+ /* Keep this one last */
+ { "list-all", BTRFS_FEATURE_LIST_ALL, NULL }
+};
+
+static void list_all_fs_features(void)
+{
+ int i;
+
+ fprintf(stderr, "Filesystem features available at mkfs time:\n");
+ for (i = 0; i < ARRAY_SIZE(mkfs_features) - 1; i++) {
+ char *is_default = "";
+
+ if (mkfs_features[i].flag & DEFAULT_MKFS_FEATURES)
+ is_default = ", default";
+ fprintf(stderr, "%-20s- %s (0x%llx%s)\n",
+ mkfs_features[i].name,
+ mkfs_features[i].desc,
+ mkfs_features[i].flag,
+ is_default);
+ }
+}
+
+static int parse_one_fs_feature(const char *name, u64 *flags)
+{
+ int i;
+ int found = 0;
+
+ for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
+ if (name[0] == '^' &&
+ !strcmp(mkfs_features[i].name, name + 1)) {
+ *flags &= ~ mkfs_features[i].flag;
+ found = 1;
+ } else if (!strcmp(mkfs_features[i].name, name)) {
+ *flags |= mkfs_features[i].flag;
+ found = 1;
+ }
+ }
+
+ return !found;
+}
+
+static void process_fs_features(u64 flags)
+{
+ int i;
+
+ for (i = 0; i < ARRAY_SIZE(mkfs_features); i++) {
+ if (flags & mkfs_features[i].flag) {
+ printf("Turning ON incompat feature '%s': %s\n",
+ mkfs_features[i].name,
+ mkfs_features[i].desc);
+ }
+ }
+}
+
+
+/*
+ * Return NULL if all features were parsed fine, otherwise return the name of
+ * the first unparsed.
+ */
+static char* parse_fs_features(char *namelist, u64 *flags)
+{
+ char *this_char;
+ char *save_ptr = NULL; /* Satisfy static checkers */
+
+ for (this_char = strtok_r(namelist, ",", &save_ptr);
+ this_char != NULL;
+ this_char = strtok_r(NULL, ",", &save_ptr)) {
+ if (parse_one_fs_feature(this_char, flags))
+ return this_char;
+ }
+
+ return NULL;
+}
+
int main(int ac, char **av)
{
char *file;
u64 alloc_start = 0;
u64 metadata_profile = 0;
u64 data_profile = 0;
- u32 leafsize = sysconf(_SC_PAGESIZE);
+ u32 leafsize = max_t(u32, sysconf(_SC_PAGESIZE), DEFAULT_MKFS_LEAF_SIZE);
u32 sectorsize = 4096;
u32 nodesize = leafsize;
u32 stripesize = 4096;
int ret;
int i;
int mixed = 0;
+ int leaf_forced = 0;
int data_profile_opt = 0;
int metadata_profile_opt = 0;
- int nodiscard = 0;
+ int discard = 1;
int ssd = 0;
+ int force_overwrite = 0;
char *source_dir = NULL;
int source_dir_set = 0;
u64 num_of_meta_chunks = 0;
u64 size_of_data = 0;
u64 source_dir_size = 0;
- char *pretty_buf;
- struct btrfs_super_block *super;
- u64 flags;
+ int dev_cnt = 0;
+ int saved_optind;
+ char estr[100];
+ u64 features = DEFAULT_MKFS_FEATURES;
while(1) {
int c;
- c = getopt_long(ac, av, "A:b:l:n:s:m:d:L:r:VMK", long_options,
- &option_index);
+ c = getopt_long(ac, av, "A:b:fl:n:s:m:d:L:O:r:VMK",
+ long_options, &option_index);
if (c < 0)
break;
switch(c) {
case 'A':
alloc_start = parse_size(optarg);
break;
+ case 'f':
+ force_overwrite = 1;
+ break;
case 'd':
data_profile = parse_profile(optarg);
data_profile_opt = 1;
case 'n':
nodesize = parse_size(optarg);
leafsize = parse_size(optarg);
+ leaf_forced = 1;
break;
case 'L':
label = parse_label(optarg);
case 'M':
mixed = 1;
break;
+ case 'O': {
+ char *orig = strdup(optarg);
+ char *tmp = orig;
+
+ tmp = parse_fs_features(tmp, &features);
+ if (tmp) {
+ fprintf(stderr,
+ "Unrecognized filesystem feature '%s'\n",
+ tmp);
+ free(orig);
+ exit(1);
+ }
+ free(orig);
+ if (features & BTRFS_FEATURE_LIST_ALL) {
+ list_all_fs_features();
+ exit(0);
+ }
+ break;
+ }
case 's':
sectorsize = parse_size(optarg);
break;
source_dir_set = 1;
break;
case 'K':
- nodiscard=1;
+ discard = 0;
break;
default:
print_usage();
exit(1);
if (check_leaf_or_node_size(nodesize, sectorsize))
exit(1);
- ac = ac - optind;
- if (ac == 0)
+ saved_optind = optind;
+ dev_cnt = ac - optind;
+ if (dev_cnt == 0)
print_usage();
- printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
- printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
-
- if (source_dir == 0) {
+ if (source_dir_set && dev_cnt > 1) {
+ fprintf(stderr,
+ "The -r option is limited to a single device\n");
+ exit(1);
+ }
+ while (dev_cnt-- > 0) {
file = av[optind++];
- ret = is_swap_device(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s status: %s\n", file,
- strerror(-ret));
- exit(1);
+ if (is_block_device(file))
+ if (test_dev_for_mkfs(file, force_overwrite, estr)) {
+ fprintf(stderr, "Error: %s", estr);
+ exit(1);
+ }
+ }
+
+ optind = saved_optind;
+ dev_cnt = ac - optind;
+
+ file = av[optind++];
+ ssd = is_ssd(file);
+
+ if (is_vol_small(file)) {
+ printf("SMALL VOLUME: forcing mixed metadata/data groups\n");
+ mixed = 1;
+ }
+
+ /*
+ * Set default profiles according to number of added devices.
+ * For mixed groups defaults are single/single.
+ */
+ if (!mixed) {
+ if (!metadata_profile_opt) {
+ if (dev_cnt == 1 && ssd)
+ printf("Detected a SSD, turning off metadata "
+ "duplication. Mkfs with -m dup if you want to "
+ "force metadata duplication.\n");
+
+ metadata_profile = (dev_cnt > 1) ?
+ BTRFS_BLOCK_GROUP_RAID1 : (ssd) ?
+ 0: BTRFS_BLOCK_GROUP_DUP;
}
- if (ret == 1) {
- fprintf(stderr, "%s is a swap device\n", file);
- exit(1);
+ if (!data_profile_opt) {
+ data_profile = (dev_cnt > 1) ?
+ BTRFS_BLOCK_GROUP_RAID0 : 0; /* raid0 or single */
}
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n", file);
- exit(1);
+ } else {
+ u32 best_leafsize = max_t(u32, sysconf(_SC_PAGESIZE), sectorsize);
+
+ if (metadata_profile_opt || data_profile_opt) {
+ if (metadata_profile != data_profile) {
+ fprintf(stderr,
+ "ERROR: With mixed block groups data and metadata profiles must be the same\n");
+ exit(1);
+ }
}
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
- exit(1);
+
+ if (!leaf_forced) {
+ leafsize = best_leafsize;
+ nodesize = best_leafsize;
+ if (check_leaf_or_node_size(leafsize, sectorsize))
+ exit(1);
}
- ac--;
- /* check if the device is busy */
- fd = open(file, O_RDWR|O_EXCL);
- if (fd < 0) {
- fprintf(stderr, "unable to open %s: %s\n", file,
- strerror(errno));
+ if (leafsize != sectorsize) {
+ fprintf(stderr, "Error: mixed metadata/data block groups "
+ "require metadata blocksizes equal to the sectorsize\n");
exit(1);
}
- close(fd);
+ }
+
+ ret = test_num_disk_vs_raid(metadata_profile, data_profile,
+ dev_cnt, mixed, estr);
+ if (ret) {
+ fprintf(stderr, "Error: %s\n", estr);
+ exit(1);
+ }
+
+ /* if we are here that means all devs are good to btrfsify */
+ printf("\nWARNING! - %s IS EXPERIMENTAL\n", BTRFS_BUILD_VERSION);
+ printf("WARNING! - see http://btrfs.wiki.kernel.org before using\n\n");
+
+ dev_cnt--;
+
+ if (!source_dir_set) {
/*
- * open again without O_EXCL so that the problem should not
+ * open without O_EXCL so that the problem should not
* occur by the following processing.
* (btrfs_register_one_device() fails if O_EXCL is on)
*/
}
first_file = file;
ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
- block_count, &mixed, nodiscard);
+ block_count, &mixed, discard);
+ if (ret) {
+ close(fd);
+ exit(1);
+ }
if (block_count && block_count > dev_block_count) {
fprintf(stderr, "%s is smaller than requested size\n", file);
exit(1);
}
} else {
- ac = 0;
- file = av[optind++];
fd = open_target(file);
if (fd < 0) {
fprintf(stderr, "unable to open the %s\n", file);
dev_block_count = block_count;
}
- ssd = is_ssd(file);
-
- if (mixed) {
- if (metadata_profile != data_profile) {
- fprintf(stderr, "With mixed block groups data and metadata "
- "profiles must be the same\n");
- exit(1);
- }
+ /* To create the first block group and chunk 0 in make_btrfs */
+ if (dev_block_count < BTRFS_MKFS_SYSTEM_GROUP_SIZE) {
+ fprintf(stderr, "device is too small to make filesystem\n");
+ exit(1);
}
blocks[0] = BTRFS_SUPER_INFO_OFFSET;
leafsize * i;
}
+ /*
+ * FS features that can be set by other means than -O
+ * just set the bit here
+ */
+ if (mixed)
+ features |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
+
+ if ((data_profile | metadata_profile) &
+ (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
+ features |= BTRFS_FEATURE_INCOMPAT_RAID56;
+ }
+
+ process_fs_features(features);
+
ret = make_btrfs(fd, file, label, blocks, dev_block_count,
nodesize, leafsize,
- sectorsize, stripesize);
+ sectorsize, stripesize, features);
if (ret) {
- fprintf(stderr, "error during mkfs %d\n", ret);
+ fprintf(stderr, "error during mkfs: %s\n", strerror(-ret));
exit(1);
}
- root = open_ctree(file, 0, O_RDWR);
+ root = open_ctree(file, 0, OPEN_CTREE_WRITES);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
close(fd);
trans = btrfs_start_transaction(root, 1);
- if (ac == 0)
+ if (dev_cnt == 0)
goto raid_groups;
btrfs_register_one_device(file);
zero_end = 1;
- while(ac-- > 0) {
+ while (dev_cnt-- > 0) {
int old_mixed = mixed;
file = av[optind++];
- ret = is_swap_device(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s status: %s\n", file,
- strerror(-ret));
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is a swap device\n", file);
- exit(1);
- }
- ret = check_mounted(file);
- if (ret < 0) {
- fprintf(stderr, "error checking %s mount status\n",
- file);
- exit(1);
- }
- if (ret == 1) {
- fprintf(stderr, "%s is mounted\n", file);
- exit(1);
- }
- /* check if the device is busy */
- fd = open(file, O_RDWR|O_EXCL);
- if (fd < 0) {
- fprintf(stderr, "unable to open %s: %s\n", file,
- strerror(errno));
- exit(1);
- }
- close(fd);
+
/*
- * open again without O_EXCL so that the problem should not
+ * open without O_EXCL so that the problem should not
* occur by the following processing.
* (btrfs_register_one_device() fails if O_EXCL is on)
*/
continue;
}
ret = btrfs_prepare_device(fd, file, zero_end, &dev_block_count,
- block_count, &mixed, nodiscard);
+ block_count, &mixed, discard);
+ if (ret) {
+ close(fd);
+ exit(1);
+ }
mixed = old_mixed;
- BUG_ON(ret);
ret = btrfs_add_to_fsid(trans, root, fd, file, dev_block_count,
sectorsize, sectorsize, sectorsize);
ret = create_data_reloc_tree(trans, root);
BUG_ON(ret);
- super = &root->fs_info->super_copy;
- flags = btrfs_super_incompat_flags(super);
- flags |= BTRFS_FEATURE_INCOMPAT_EXTENDED_IREF;
-
- if (mixed)
- flags |= BTRFS_FEATURE_INCOMPAT_MIXED_GROUPS;
-
- btrfs_set_super_incompat_flags(super, flags);
-
- if ((data_profile | metadata_profile) &
- (BTRFS_BLOCK_GROUP_RAID5 | BTRFS_BLOCK_GROUP_RAID6)) {
- struct btrfs_super_block *super = &root->fs_info->super_copy;
- u64 flags = btrfs_super_incompat_flags(super);
-
- flags |= BTRFS_FEATURE_INCOMPAT_RAID56;
- btrfs_set_super_incompat_flags(super, flags);
- printf("Setting RAID5/6 feature flag\n");
- }
-
printf("fs created label %s on %s\n\tnodesize %u leafsize %u "
"sectorsize %u size %s\n",
label, first_file, nodesize, leafsize, sectorsize,
- pretty_buf = pretty_sizes(btrfs_super_total_bytes(&root->fs_info->super_copy)));
- free(pretty_buf);
+ pretty_size(btrfs_super_total_bytes(root->fs_info->super_copy)));
printf("%s\n", BTRFS_BUILD_VERSION);
btrfs_commit_transaction(trans, root);
ret = close_ctree(root);
BUG_ON(ret);
-
free(label);
return 0;
}
-
projects / platform / upstream / btrfs-progs.git / blobdiff