#include <ctype.h>
+#include <dirent.h>
#include <errno.h>
#include <fcntl.h>
#include <stdbool.h>
#include <stdlib.h>
#include <string.h>
#include <sys/stat.h>
+#include <sys/sysmacros.h>
#include <sys/types.h>
#include <time.h>
#include <unistd.h>
#include <uuid/uuid.h>
+#include "libbcachefs.h"
+#include "crypto.h"
#include "libbcachefs/bcachefs_format.h"
+#include "libbcachefs/btree_cache.h"
#include "libbcachefs/checksum.h"
-#include "crypto.h"
-#include "libbcachefs.h"
+#include "libbcachefs/disk_groups.h"
#include "libbcachefs/opts.h"
+#include "libbcachefs/replicas.h"
#include "libbcachefs/super-io.h"
+#include "tools-util.h"
#define NSEC_PER_SEC 1000000000L
-#define BCH_MIN_NR_NBUCKETS (1 << 10)
-
/* minimum size filesystem we can create, given a bucket size: */
static u64 min_size(unsigned bucket_size)
{
l->sb_offset[1] = cpu_to_le64(backup);
}
-void bch2_pick_bucket_size(struct format_opts opts, struct dev_opts *dev)
+void bch2_pick_bucket_size(struct bch_opts opts, struct dev_opts *dev)
{
if (!dev->sb_offset) {
dev->sb_offset = BCH_SB_SECTOR;
dev->bucket_size = opts.block_size;
/* Bucket size must be >= btree node size: */
- dev->bucket_size = max(dev->bucket_size, opts.btree_node_size);
+ if (opt_defined(opts, btree_node_size))
+ dev->bucket_size = max_t(unsigned, dev->bucket_size,
+ opts.btree_node_size);
/* Want a bucket size of at least 128k, if possible: */
dev->bucket_size = max(dev->bucket_size, 256U);
if (dev->bucket_size < opts.block_size)
die("Bucket size cannot be smaller than block size");
- if (dev->bucket_size < opts.btree_node_size)
+ if (opt_defined(opts, btree_node_size) &&
+ dev->bucket_size < opts.btree_node_size)
die("Bucket size cannot be smaller than btree node size");
if (dev->nbuckets < BCH_MIN_NR_NBUCKETS)
}
-struct bch_sb *bch2_format(struct format_opts opts,
- struct dev_opts *devs, size_t nr_devs)
+static unsigned parse_target(struct bch_sb_handle *sb,
+ struct dev_opts *devs, size_t nr_devs,
+ const char *s)
+{
+ struct dev_opts *i;
+ int idx;
+
+ if (!s)
+ return 0;
+
+ for (i = devs; i < devs + nr_devs; i++)
+ if (!strcmp(s, i->path))
+ return dev_to_target(i - devs);
+
+ idx = bch2_disk_path_find(sb, s);
+ if (idx >= 0)
+ return group_to_target(idx);
+
+ die("Invalid target %s", s);
+ return 0;
+}
+
+struct bch_sb *bch2_format(struct bch_opt_strs fs_opt_strs,
+ struct bch_opts fs_opts,
+ struct format_opts opts,
+ struct dev_opts *devs,
+ size_t nr_devs)
{
- struct bch_sb *sb;
+ struct bch_sb_handle sb = { NULL };
struct dev_opts *i;
struct bch_sb_field_members *mi;
- unsigned u64s;
+ unsigned max_dev_block_size = 0;
+ unsigned opt_id;
+
+ for (i = devs; i < devs + nr_devs; i++)
+ max_dev_block_size = max(max_dev_block_size,
+ get_blocksize(i->path, i->fd));
/* calculate block size: */
- if (!opts.block_size)
- for (i = devs; i < devs + nr_devs; i++)
- opts.block_size = max(opts.block_size,
- get_blocksize(i->path, i->fd));
+ if (!opt_defined(fs_opts, block_size)) {
+ opt_set(fs_opts, block_size, max_dev_block_size);
+ } else if (fs_opts.block_size < max_dev_block_size)
+ die("blocksize too small: %u, must be greater than device blocksize %u",
+ fs_opts.block_size, max_dev_block_size);
/* calculate bucket sizes: */
for (i = devs; i < devs + nr_devs; i++)
- bch2_pick_bucket_size(opts, i);
+ bch2_pick_bucket_size(fs_opts, i);
/* calculate btree node size: */
- if (!opts.btree_node_size) {
+ if (!opt_defined(fs_opts, btree_node_size)) {
/* 256k default btree node size */
- opts.btree_node_size = 512;
+ opt_set(fs_opts, btree_node_size, 512);
for (i = devs; i < devs + nr_devs; i++)
- opts.btree_node_size =
- min(opts.btree_node_size, i->bucket_size);
+ fs_opts.btree_node_size =
+ min_t(unsigned, fs_opts.btree_node_size,
+ i->bucket_size);
}
- if (!is_power_of_2(opts.block_size))
+ if (!is_power_of_2(fs_opts.block_size))
die("block size must be power of 2");
- if (!is_power_of_2(opts.btree_node_size))
+ if (!is_power_of_2(fs_opts.btree_node_size))
die("btree node size must be power of 2");
if (uuid_is_null(opts.uuid.b))
uuid_generate(opts.uuid.b);
- sb = calloc(1, sizeof(*sb) +
- sizeof(struct bch_sb_field_members) +
- sizeof(struct bch_member) * nr_devs +
- sizeof(struct bch_sb_field_crypt));
+ if (bch2_sb_realloc(&sb, 0))
+ die("insufficient memory");
- sb->version = cpu_to_le64(BCH_SB_VERSION_MAX);
- sb->magic = BCACHE_MAGIC;
- sb->block_size = cpu_to_le16(opts.block_size);
- sb->user_uuid = opts.uuid;
- sb->nr_devices = nr_devs;
+ sb.sb->version = le16_to_cpu(bcachefs_metadata_version_current);
+ sb.sb->version_min = le16_to_cpu(bcachefs_metadata_version_current);
+ sb.sb->magic = BCACHE_MAGIC;
+ sb.sb->block_size = cpu_to_le16(fs_opts.block_size);
+ sb.sb->user_uuid = opts.uuid;
+ sb.sb->nr_devices = nr_devs;
- uuid_generate(sb->uuid.b);
+ uuid_generate(sb.sb->uuid.b);
if (opts.label)
- strncpy((char *) sb->label, opts.label, sizeof(sb->label));
+ memcpy(sb.sb->label,
+ opts.label,
+ min(strlen(opts.label), sizeof(sb.sb->label)));
- SET_BCH_SB_CSUM_TYPE(sb, opts.meta_csum_type);
- SET_BCH_SB_META_CSUM_TYPE(sb, opts.meta_csum_type);
- SET_BCH_SB_DATA_CSUM_TYPE(sb, opts.data_csum_type);
- SET_BCH_SB_COMPRESSION_TYPE(sb, opts.compression_type);
+ for (opt_id = 0;
+ opt_id < bch2_opts_nr;
+ opt_id++) {
+ const struct bch_option *opt = &bch2_opt_table[opt_id];
+ u64 v;
- SET_BCH_SB_BTREE_NODE_SIZE(sb, opts.btree_node_size);
- SET_BCH_SB_GC_RESERVE(sb, 8);
- SET_BCH_SB_META_REPLICAS_WANT(sb, opts.meta_replicas);
- SET_BCH_SB_META_REPLICAS_REQ(sb, opts.meta_replicas_required);
- SET_BCH_SB_DATA_REPLICAS_WANT(sb, opts.data_replicas);
- SET_BCH_SB_DATA_REPLICAS_REQ(sb, opts.data_replicas_required);
- SET_BCH_SB_ERROR_ACTION(sb, opts.on_error_action);
- SET_BCH_SB_STR_HASH_TYPE(sb, BCH_STR_HASH_SIPHASH);
- SET_BCH_SB_ENCODED_EXTENT_MAX_BITS(sb, ilog2(opts.encoded_extent_max));
+ if (opt->set_sb == SET_NO_SB_OPT)
+ continue;
+
+ v = bch2_opt_defined_by_id(&fs_opts, opt_id)
+ ? bch2_opt_get_by_id(&fs_opts, opt_id)
+ : bch2_opt_get_by_id(&bch2_opts_default, opt_id);
- SET_BCH_SB_POSIX_ACL(sb, 1);
+ opt->set_sb(sb.sb, v);
+ }
+
+ SET_BCH_SB_ENCODED_EXTENT_MAX_BITS(sb.sb,
+ ilog2(opts.encoded_extent_max));
struct timespec now;
if (clock_gettime(CLOCK_REALTIME, &now))
die("error getting current time: %m");
- sb->time_base_lo = cpu_to_le64(now.tv_sec * NSEC_PER_SEC + now.tv_nsec);
- sb->time_precision = cpu_to_le32(1);
-
- if (opts.encrypted) {
- struct bch_sb_field_crypt *crypt = vstruct_end(sb);
-
- u64s = sizeof(struct bch_sb_field_crypt) / sizeof(u64);
-
- le32_add_cpu(&sb->u64s, u64s);
- crypt->field.u64s = cpu_to_le32(u64s);
- crypt->field.type = BCH_SB_FIELD_crypt;
-
- bch_sb_crypt_init(sb, crypt, opts.passphrase);
- SET_BCH_SB_ENCRYPTION_TYPE(sb, 1);
- }
-
- mi = vstruct_end(sb);
- u64s = (sizeof(struct bch_sb_field_members) +
- sizeof(struct bch_member) * nr_devs) / sizeof(u64);
+ sb.sb->time_base_lo = cpu_to_le64(now.tv_sec * NSEC_PER_SEC + now.tv_nsec);
+ sb.sb->time_precision = cpu_to_le32(1);
- le32_add_cpu(&sb->u64s, u64s);
- mi->field.u64s = cpu_to_le32(u64s);
- mi->field.type = BCH_SB_FIELD_members;
+ /* Member info: */
+ mi = bch2_sb_resize_members(&sb,
+ (sizeof(*mi) + sizeof(struct bch_member) *
+ nr_devs) / sizeof(u64));
for (i = devs; i < devs + nr_devs; i++) {
struct bch_member *m = mi->members + (i - devs);
m->first_bucket = 0;
m->bucket_size = cpu_to_le16(i->bucket_size);
- SET_BCH_MEMBER_TIER(m, i->tier);
SET_BCH_MEMBER_REPLACEMENT(m, CACHE_REPLACEMENT_LRU);
SET_BCH_MEMBER_DISCARD(m, i->discard);
SET_BCH_MEMBER_DATA_ALLOWED(m, i->data_allowed);
+ SET_BCH_MEMBER_DURABILITY(m, i->durability + 1);
+ }
+
+ /* Disk groups */
+ for (i = devs; i < devs + nr_devs; i++) {
+ struct bch_member *m = mi->members + (i - devs);
+ int idx;
+
+ if (!i->group)
+ continue;
+
+ idx = bch2_disk_path_find_or_create(&sb, i->group);
+ if (idx < 0)
+ die("error creating disk path: %s", idx);
+
+ SET_BCH_MEMBER_GROUP(m, idx + 1);
+ }
+
+ SET_BCH_SB_FOREGROUND_TARGET(sb.sb,
+ parse_target(&sb, devs, nr_devs, fs_opt_strs.foreground_target));
+ SET_BCH_SB_BACKGROUND_TARGET(sb.sb,
+ parse_target(&sb, devs, nr_devs, fs_opt_strs.background_target));
+ SET_BCH_SB_PROMOTE_TARGET(sb.sb,
+ parse_target(&sb, devs, nr_devs, fs_opt_strs.promote_target));
+
+ /* Crypt: */
+ if (opts.encrypted) {
+ struct bch_sb_field_crypt *crypt =
+ bch2_sb_resize_crypt(&sb, sizeof(*crypt) / sizeof(u64));
+
+ bch_sb_crypt_init(sb.sb, crypt, opts.passphrase);
+ SET_BCH_SB_ENCRYPTION_TYPE(sb.sb, 1);
}
for (i = devs; i < devs + nr_devs; i++) {
- sb->dev_idx = i - devs;
+ sb.sb->dev_idx = i - devs;
- init_layout(&sb->layout, opts.block_size,
+ init_layout(&sb.sb->layout, fs_opts.block_size,
i->sb_offset, i->sb_end);
if (i->sb_offset == BCH_SB_SECTOR) {
xpwrite(i->fd, zeroes, BCH_SB_SECTOR << 9, 0);
}
- bch2_super_write(i->fd, sb);
+ bch2_super_write(i->fd, sb.sb);
close(i->fd);
}
- return sb;
+ return sb.sb;
}
void bch2_super_write(int fd, struct bch_sb *sb)
if (replicas)
for_each_replicas_entry(replicas, r)
- for (i = 0; i < r->nr; i++)
+ for (i = 0; i < r->nr_devs; i++)
if (r->devs[i] == dev)
data_has |= 1 << r->data_type;
return data_has;
}
+static int bch2_sb_get_target(struct bch_sb *sb, char *buf, size_t len, u64 v)
+{
+ struct target t = target_decode(v);
+ int ret;
+
+ switch (t.type) {
+ case TARGET_NULL:
+ return scnprintf(buf, len, "none");
+ case TARGET_DEV: {
+ struct bch_sb_field_members *mi = bch2_sb_get_members(sb);
+ struct bch_member *m = mi->members + t.dev;
+
+ if (bch2_dev_exists(sb, mi, t.dev)) {
+ char uuid_str[40];
+
+ uuid_unparse(m->uuid.b, uuid_str);
+
+ ret = scnprintf(buf, len, "Device %u (%s)", t.dev,
+ uuid_str);
+ } else {
+ ret = scnprintf(buf, len, "Bad device %u", t.dev);
+ }
+
+ break;
+ }
+ case TARGET_GROUP: {
+ struct bch_sb_field_disk_groups *gi;
+ gi = bch2_sb_get_disk_groups(sb);
+
+ struct bch_disk_group *g = gi->entries + t.group;
+
+ if (t.group < disk_groups_nr(gi) && !BCH_GROUP_DELETED(g)) {
+ ret = scnprintf(buf, len, "Group %u (%.*s)", t.group,
+ BCH_SB_LABEL_SIZE, g->label);
+ } else {
+ ret = scnprintf(buf, len, "Bad group %u", t.group);
+ }
+ break;
+ }
+ default:
+ BUG();
+ }
+
+ return ret;
+}
+
/* superblock printing: */
static void bch2_sb_print_layout(struct bch_sb *sb, enum units units)
enum units units)
{
struct bch_sb_field_members *mi = field_to_type(f, members);
+ struct bch_sb_field_disk_groups *gi = bch2_sb_get_disk_groups(sb);
unsigned i;
for (i = 0; i < sb->nr_devices; i++) {
char member_uuid_str[40];
char data_allowed_str[100];
char data_has_str[100];
+ char group[BCH_SB_LABEL_SIZE+10];
+ char time_str[64];
if (!bch2_member_exists(m))
continue;
uuid_unparse(m->uuid.b, member_uuid_str);
- bch2_scnprint_flag_list(data_allowed_str,
- sizeof(data_allowed_str),
- bch2_data_types,
- BCH_MEMBER_DATA_ALLOWED(m));
+
+ if (BCH_MEMBER_GROUP(m)) {
+ unsigned idx = BCH_MEMBER_GROUP(m) - 1;
+
+ if (idx < disk_groups_nr(gi)) {
+ snprintf(group, sizeof(group), "%.*s (%u)",
+ BCH_SB_LABEL_SIZE,
+ gi->entries[idx].label, idx);
+ } else {
+ strcpy(group, "(bad disk groups section)");
+ }
+ } else {
+ strcpy(group, "(none)");
+ }
+
+ bch2_flags_to_text(&PBUF(data_allowed_str),
+ bch2_data_types,
+ BCH_MEMBER_DATA_ALLOWED(m));
if (!data_allowed_str[0])
strcpy(data_allowed_str, "(none)");
- bch2_scnprint_flag_list(data_has_str,
- sizeof(data_has_str),
- bch2_data_types,
- get_dev_has_data(sb, i));
+ bch2_flags_to_text(&PBUF(data_has_str),
+ bch2_data_types,
+ get_dev_has_data(sb, i));
if (!data_has_str[0])
strcpy(data_has_str, "(none)");
+ if (last_mount) {
+ struct tm *tm = localtime(&last_mount);
+ size_t err = strftime(time_str, sizeof(time_str), "%c", tm);
+ if (!err)
+ strcpy(time_str, "(formatting error)");
+ } else {
+ strcpy(time_str, "(never)");
+ }
+
printf(" Device %u:\n"
" UUID: %s\n"
" Size: %s\n"
" Buckets: %llu\n"
" Last mount: %s\n"
" State: %s\n"
- " Tier: %llu\n"
+ " Group: %s\n"
" Data allowed: %s\n"
" Has data: %s\n"
pr_units(le16_to_cpu(m->bucket_size), units),
le16_to_cpu(m->first_bucket),
le64_to_cpu(m->nbuckets),
- last_mount ? ctime(&last_mount) : "(never)",
+ time_str,
BCH_MEMBER_STATE(m) < BCH_MEMBER_STATE_NR
? bch2_dev_state[BCH_MEMBER_STATE(m)]
: "unknown",
- BCH_MEMBER_TIER(m),
+ group,
data_allowed_str,
data_has_str,
BCH_KDF_SCRYPT_P(crypt));
}
+static void bch2_sb_print_replicas_v0(struct bch_sb *sb, struct bch_sb_field *f,
+ enum units units)
+{
+ struct bch_sb_field_replicas_v0 *replicas = field_to_type(f, replicas_v0);
+ struct bch_replicas_entry_v0 *e;
+ unsigned i;
+
+ for_each_replicas_entry(replicas, e) {
+ printf_pad(32, " %s:", bch2_data_types[e->data_type]);
+
+ putchar('[');
+ for (i = 0; i < e->nr_devs; i++) {
+ if (i)
+ putchar(' ');
+ printf("%u", e->devs[i]);
+ }
+ printf("]\n");
+ }
+}
+
static void bch2_sb_print_replicas(struct bch_sb *sb, struct bch_sb_field *f,
enum units units)
{
unsigned i;
for_each_replicas_entry(replicas, e) {
- printf_pad(32, " %s:", bch2_data_types[e->data_type]);
+ printf_pad(32, " %s: %u/%u",
+ bch2_data_types[e->data_type],
+ e->nr_required,
+ e->nr_devs);
putchar('[');
- for (i = 0; i < e->nr; i++) {
+ for (i = 0; i < e->nr_devs; i++) {
if (i)
putchar(' ');
printf("%u", e->devs[i]);
{
}
+static void bch2_sb_print_disk_groups(struct bch_sb *sb, struct bch_sb_field *f,
+ enum units units)
+{
+}
+
+static void bch2_sb_print_clean(struct bch_sb *sb, struct bch_sb_field *f,
+ enum units units)
+{
+}
+
+static void bch2_sb_print_journal_seq_blacklist(struct bch_sb *sb, struct bch_sb_field *f,
+ enum units units)
+{
+}
+
typedef void (*sb_field_print_fn)(struct bch_sb *, struct bch_sb_field *, enum units);
-struct bch_sb_field_ops {
+struct bch_sb_field_toolops {
sb_field_print_fn print;
};
-static const struct bch_sb_field_ops bch2_sb_field_ops[] = {
+static const struct bch_sb_field_toolops bch2_sb_field_ops[] = {
#define x(f, nr) \
[BCH_SB_FIELD_##f] = { \
.print = bch2_sb_print_##f, \
{
struct bch_sb_field_members *mi;
char user_uuid_str[40], internal_uuid_str[40];
+ char features_str[200];
char fields_have_str[200];
char label[BCH_SB_LABEL_SIZE + 1];
+ char time_str[64];
+ char foreground_str[64];
+ char background_str[64];
+ char promote_str[64];
struct bch_sb_field *f;
u64 fields_have = 0;
unsigned nr_devices = 0;
+ time_t time_base = le64_to_cpu(sb->time_base_lo) / NSEC_PER_SEC;
+
+ memcpy(label, sb->label, BCH_SB_LABEL_SIZE);
+ label[BCH_SB_LABEL_SIZE] = '\0';
- memset(label, 0, sizeof(label));
- memcpy(label, sb->label, sizeof(sb->label));
uuid_unparse(sb->user_uuid.b, user_uuid_str);
uuid_unparse(sb->uuid.b, internal_uuid_str);
+ if (time_base) {
+ struct tm *tm = localtime(&time_base);
+ size_t err = strftime(time_str, sizeof(time_str), "%c", tm);
+ if (!err)
+ strcpy(time_str, "(formatting error)");
+ } else {
+ strcpy(time_str, "(not set)");
+ }
+
mi = bch2_sb_get_members(sb);
if (mi) {
struct bch_member *m;
nr_devices += bch2_member_exists(m);
}
+ bch2_sb_get_target(sb, foreground_str, sizeof(foreground_str),
+ BCH_SB_FOREGROUND_TARGET(sb));
+
+ bch2_sb_get_target(sb, background_str, sizeof(background_str),
+ BCH_SB_BACKGROUND_TARGET(sb));
+
+ bch2_sb_get_target(sb, promote_str, sizeof(promote_str),
+ BCH_SB_PROMOTE_TARGET(sb));
+
+ bch2_flags_to_text(&PBUF(features_str),
+ bch2_sb_features,
+ le64_to_cpu(sb->features[0]));
+
vstruct_for_each(sb, f)
fields_have |= 1 << le32_to_cpu(f->type);
- bch2_scnprint_flag_list(fields_have_str, sizeof(fields_have_str),
- bch2_sb_fields, fields_have);
+ bch2_flags_to_text(&PBUF(fields_have_str),
+ bch2_sb_fields, fields_have);
printf("External UUID: %s\n"
"Internal UUID: %s\n"
"Label: %s\n"
"Version: %llu\n"
+ "Created: %s\n"
+ "Squence number: %llu\n"
"Block_size: %s\n"
"Btree node size: %s\n"
"Error action: %s\n"
"Clean: %llu\n"
+ "Features: %s\n"
"Metadata replicas: %llu\n"
"Data replicas: %llu\n"
"Data checksum type: %s (%llu)\n"
"Compression type: %s (%llu)\n"
+ "Foreground write target: %s\n"
+ "Background write target: %s\n"
+ "Promote target: %s\n"
+
"String hash type: %s (%llu)\n"
"32 bit inodes: %llu\n"
"GC reserve percentage: %llu%%\n"
internal_uuid_str,
label,
le64_to_cpu(sb->version),
+ time_str,
+ le64_to_cpu(sb->seq),
pr_units(le16_to_cpu(sb->block_size), units),
pr_units(BCH_SB_BTREE_NODE_SIZE(sb), units),
: "unknown",
BCH_SB_CLEAN(sb),
+ features_str,
BCH_SB_META_REPLICAS_WANT(sb),
BCH_SB_DATA_REPLICAS_WANT(sb),
BCH_SB_META_CSUM_TYPE(sb) < BCH_CSUM_OPT_NR
- ? bch2_csum_types[BCH_SB_META_CSUM_TYPE(sb)]
+ ? bch2_csum_opts[BCH_SB_META_CSUM_TYPE(sb)]
: "unknown",
BCH_SB_META_CSUM_TYPE(sb),
BCH_SB_DATA_CSUM_TYPE(sb) < BCH_CSUM_OPT_NR
- ? bch2_csum_types[BCH_SB_DATA_CSUM_TYPE(sb)]
+ ? bch2_csum_opts[BCH_SB_DATA_CSUM_TYPE(sb)]
: "unknown",
BCH_SB_DATA_CSUM_TYPE(sb),
BCH_SB_COMPRESSION_TYPE(sb) < BCH_COMPRESSION_OPT_NR
- ? bch2_compression_types[BCH_SB_COMPRESSION_TYPE(sb)]
+ ? bch2_compression_opts[BCH_SB_COMPRESSION_TYPE(sb)]
: "unknown",
BCH_SB_COMPRESSION_TYPE(sb),
+ foreground_str,
+ background_str,
+ promote_str,
+
BCH_SB_STR_HASH_TYPE(sb) < BCH_STR_HASH_NR
? bch2_str_hash_types[BCH_SB_STR_HASH_TYPE(sb)]
: "unknown",
if (!uuid_parse(path, ret.uuid.b)) {
/* It's a UUID, look it up in sysfs: */
- char *sysfs = mprintf("%s%s", SYSFS_BASE, path);
+ char *sysfs = mprintf(SYSFS_BASE "%s", path);
ret.sysfs_fd = xopen(sysfs, O_RDONLY);
char *minor = read_file_str(ret.sysfs_fd, "minor");
ret.ioctl_fd = xopen(path, O_RDONLY);
struct bch_ioctl_query_uuid uuid;
- xioctl(ret.ioctl_fd, BCH_IOCTL_QUERY_UUID, &uuid);
+ if (ioctl(ret.ioctl_fd, BCH_IOCTL_QUERY_UUID, &uuid) < 0)
+ die("error opening %s: not a bcachefs filesystem", path);
ret.uuid = uuid.uuid;
char uuid_str[40];
uuid_unparse(uuid.uuid.b, uuid_str);
- char *sysfs = mprintf("%s%s", SYSFS_BASE, uuid_str);
+ char *sysfs = mprintf(SYSFS_BASE "%s", uuid_str);
ret.sysfs_fd = xopen(sysfs, O_RDONLY);
free(sysfs);
}
return ret;
}
+
+/*
+ * Given a path to a block device, open the filesystem it belongs to; also
+ * return the device's idx:
+ */
+struct bchfs_handle bchu_fs_open_by_dev(const char *path, unsigned *idx)
+{
+ char buf[1024], *uuid_str;
+
+ struct stat stat = xstat(path);
+
+ if (!S_ISBLK(stat.st_mode))
+ die("%s is not a block device", path);
+
+ char *sysfs = mprintf("/sys/dev/block/%u:%u/bcachefs",
+ major(stat.st_dev),
+ minor(stat.st_dev));
+ ssize_t len = readlink(sysfs, buf, sizeof(buf));
+ free(sysfs);
+
+ if (len > 0) {
+ char *p = strrchr(buf, '/');
+ if (!p || sscanf(p + 1, "dev-%u", idx) != 1)
+ die("error parsing sysfs");
+
+ *p = '\0';
+ p = strrchr(buf, '/');
+ uuid_str = p + 1;
+ } else {
+ struct bch_opts opts = bch2_opts_empty();
+
+ opt_set(opts, noexcl, true);
+ opt_set(opts, nochanges, true);
+
+ struct bch_sb_handle sb;
+ int ret = bch2_read_super(path, &opts, &sb);
+ if (ret)
+ die("Error opening %s: %s", path, strerror(-ret));
+
+ *idx = sb.sb->dev_idx;
+ uuid_str = buf;
+ uuid_unparse(sb.sb->user_uuid.b, uuid_str);
+
+ bch2_free_super(&sb);
+ }
+
+ return bcache_fs_open(uuid_str);
+}
+
+int bchu_data(struct bchfs_handle fs, struct bch_ioctl_data cmd)
+{
+ int progress_fd = xioctl(fs.ioctl_fd, BCH_IOCTL_DATA, &cmd);
+
+ while (1) {
+ struct bch_ioctl_data_event e;
+
+ if (read(progress_fd, &e, sizeof(e)) != sizeof(e))
+ die("error reading from progress fd %m");
+
+ if (e.type)
+ continue;
+
+ if (e.p.data_type == U8_MAX)
+ break;
+
+ printf("\33[2K\r");
+
+ printf("%llu%% complete: current position %s",
+ e.p.sectors_total
+ ? e.p.sectors_done * 100 / e.p.sectors_total
+ : 0,
+ bch2_data_types[e.p.data_type]);
+
+ switch (e.p.data_type) {
+ case BCH_DATA_BTREE:
+ case BCH_DATA_USER:
+ printf(" %s:%llu:%llu",
+ bch2_btree_ids[e.p.btree_id],
+ e.p.pos.inode,
+ e.p.pos.offset);
+ }
+
+ fflush(stdout);
+ sleep(1);
+ }
+ printf("\nDone\n");
+
+ close(progress_fd);
+ return 0;
+}
+
+/* option parsing */
+
+struct bch_opt_strs bch2_cmdline_opts_get(int *argc, char *argv[],
+ unsigned opt_types)
+{
+ struct bch_opt_strs opts;
+ unsigned i = 1;
+
+ memset(&opts, 0, sizeof(opts));
+
+ while (i < *argc) {
+ char *optstr = strcmp_prefix(argv[i], "--");
+ char *valstr = NULL, *p;
+ int optid, nr_args = 1;
+
+ if (!optstr) {
+ i++;
+ continue;
+ }
+
+ optstr = strdup(optstr);
+
+ p = optstr;
+ while (isalpha(*p) || *p == '_')
+ p++;
+
+ if (*p == '=') {
+ *p = '\0';
+ valstr = p + 1;
+ }
+
+ optid = bch2_opt_lookup(optstr);
+ if (optid < 0 ||
+ !(bch2_opt_table[optid].mode & opt_types)) {
+ free(optstr);
+ i++;
+ continue;
+ }
+
+ if (!valstr &&
+ bch2_opt_table[optid].type != BCH_OPT_BOOL) {
+ nr_args = 2;
+ valstr = argv[i + 1];
+ }
+
+ if (!valstr)
+ valstr = "1";
+
+ opts.by_id[optid] = valstr;
+
+ *argc -= nr_args;
+ memmove(&argv[i],
+ &argv[i + nr_args],
+ sizeof(char *) * (*argc - i));
+ argv[*argc] = NULL;
+ }
+
+ return opts;
+}
+
+struct bch_opts bch2_parse_opts(struct bch_opt_strs strs)
+{
+ struct bch_opts opts = bch2_opts_empty();
+ unsigned i;
+ int ret;
+ u64 v;
+
+ for (i = 0; i < bch2_opts_nr; i++) {
+ if (!strs.by_id[i] ||
+ bch2_opt_table[i].type == BCH_OPT_FN)
+ continue;
+
+ ret = bch2_opt_parse(NULL, &bch2_opt_table[i],
+ strs.by_id[i], &v);
+ if (ret < 0)
+ die("Invalid %s: %s", strs.by_id[i], strerror(-ret));
+
+ bch2_opt_set_by_id(&opts, i, v);
+ }
+
+ return opts;
+}
+
+void bch2_opts_usage(unsigned opt_types)
+{
+ const struct bch_option *opt;
+ unsigned i, c = 0, helpcol = 30;
+
+ void tabalign() {
+ while (c < helpcol) {
+ putchar(' ');
+ c++;
+ }
+ }
+
+ void newline() {
+ printf("\n");
+ c = 0;
+ }
+
+ for (opt = bch2_opt_table;
+ opt < bch2_opt_table + bch2_opts_nr;
+ opt++) {
+ if (!(opt->mode & opt_types))
+ continue;
+
+ c += printf(" --%s", opt->attr.name);
+
+ switch (opt->type) {
+ case BCH_OPT_BOOL:
+ break;
+ case BCH_OPT_STR:
+ c += printf("=(");
+ for (i = 0; opt->choices[i]; i++) {
+ if (i)
+ c += printf("|");
+ c += printf("%s", opt->choices[i]);
+ }
+ c += printf(")");
+ break;
+ default:
+ c += printf("=%s", opt->hint);
+ break;
+ }
+
+ if (opt->help) {
+ const char *l = opt->help;
+
+ if (c >= helpcol)
+ newline();
+
+ while (1) {
+ const char *n = strchrnul(l, '\n');
+
+ tabalign();
+ printf("%.*s", (int) (n - l), l);
+ newline();
+
+ if (!*n)
+ break;
+ l = n + 1;
+ }
+ } else {
+ newline();
+ }
+ }
+}
+
+dev_names bchu_fs_get_devices(struct bchfs_handle fs)
+{
+ DIR *dir = fdopendir(fs.sysfs_fd);
+ struct dirent *d;
+ dev_names devs;
+
+ darray_init(devs);
+
+ while ((errno = 0), (d = readdir(dir))) {
+ struct dev_name n = { 0, NULL, NULL };
+
+ if (sscanf(d->d_name, "dev-%u", &n.idx) != 1)
+ continue;
+
+ char *block_attr = mprintf("dev-%u/block", n.idx);
+
+ char sysfs_block_buf[4096];
+ ssize_t r = readlinkat(fs.sysfs_fd, block_attr,
+ sysfs_block_buf, sizeof(sysfs_block_buf));
+ if (r > 0) {
+ sysfs_block_buf[r] = '\0';
+ n.dev = strdup(basename(sysfs_block_buf));
+ }
+
+ free(block_attr);
+
+ char *label_attr = mprintf("dev-%u/label", n.idx);
+ n.label = read_file_str(fs.sysfs_fd, label_attr);
+ free(label_attr);
+
+ darray_append(devs, n);
+ }
+
+ closedir(dir);
+
+ return devs;
+}
projects / bcachefs-tools-debian / blobdiff