7 #include "libbcachefs.h"
9 #include "tools-util.h"
13 #include "btree_cache.h"
14 #include "btree_iter.h"
19 static void dump_usage(void)
21 puts("bcachefs dump - dump filesystem metadata\n"
22 "Usage: bcachefs dump [OPTION]... <devices>\n"
25 " -o output Output qcow2 image(s)\n"
26 " -h Display this help and exit\n"
27 "Report bugs to <linux-bcache@vger.kernel.org>");
30 static void dump_one_device(struct bch_fs *c, struct bch_dev *ca, int fd)
32 struct bch_sb *sb = ca->disk_sb.sb;
39 range_add(&data, BCH_SB_LAYOUT_SECTOR << 9,
40 sizeof(struct bch_sb_layout));
42 for (i = 0; i < sb->layout.nr_superblocks; i++)
44 le64_to_cpu(sb->layout.sb_offset[i]) << 9,
48 for (i = 0; i < ca->journal.nr; i++)
49 if (ca->journal.bucket_seq[i] >= c->journal.last_seq_ondisk) {
50 u64 bucket = ca->journal.buckets[i];
53 bucket_bytes(ca) * bucket,
58 for (i = 0; i < prio_buckets(ca); i++)
60 bucket_bytes(ca) * ca->prio_last_buckets[i],
64 for (i = 0; i < BTREE_ID_NR; i++) {
65 const struct bch_extent_ptr *ptr;
66 struct btree_iter iter;
69 for_each_btree_node(&iter, c, i, POS_MIN, 0, b) {
70 struct bkey_s_c_extent e = bkey_i_to_s_c_extent(&b->key);
72 extent_for_each_ptr(e, ptr)
73 if (ptr->dev == ca->dev_idx)
78 bch2_btree_iter_unlock(&iter);
81 qcow2_write_image(ca->disk_sb.bdev->bd_fd, fd, &data,
82 max_t(unsigned, btree_bytes(c) / 8, block_bytes(c)));
85 int cmd_dump(int argc, char *argv[])
87 struct bch_opts opts = bch2_opts_empty();
88 struct bch_fs *c = NULL;
91 unsigned i, nr_devices = 0;
95 opts.nochanges = true;
97 opts.errors = BCH_ON_ERROR_CONTINUE;
99 while ((opt = getopt(argc, argv, "o:fh")) != -1)
113 die("Please supply device(s) to check");
116 die("Please supply output filename");
118 err = bch2_fs_open(argv + optind, argc - optind, opts, &c);
120 die("error opening %s: %s", argv[optind], err);
122 down_read(&c->gc_lock);
124 for (i = 0; i < c->sb.nr_devices; i++)
130 for (i = 0; i < c->sb.nr_devices; i++) {
131 int mode = O_WRONLY|O_CREAT|O_TRUNC;
139 char *path = nr_devices > 1
140 ? mprintf("%s.%u", out, i)
142 fd = xopen(path, mode, 0600);
145 dump_one_device(c, c->devs[i], fd);
149 up_read(&c->gc_lock);
155 static void list_keys(struct bch_fs *c, enum btree_id btree_id,
156 struct bpos start, struct bpos end, int mode)
158 struct btree_iter iter;
162 for_each_btree_key(&iter, c, btree_id, start, k) {
163 if (bkey_cmp(k.k->p, end) > 0)
166 bch2_bkey_val_to_text(c, bkey_type(0, btree_id),
167 buf, sizeof(buf), k);
170 bch2_btree_iter_unlock(&iter);
173 static void list_btree_formats(struct bch_fs *c, enum btree_id btree_id,
174 struct bpos start, struct bpos end, int mode)
176 struct btree_iter iter;
180 for_each_btree_node(&iter, c, btree_id, start, 0, b) {
181 if (bkey_cmp(b->key.k.p, end) > 0)
184 bch2_print_btree_node(c, b, buf, sizeof(buf));
187 bch2_btree_iter_unlock(&iter);
190 static struct bpos parse_pos(char *buf)
193 char *inode = strsep(&s, ":");
194 char *offset = strsep(&s, ":");
195 struct bpos ret = { 0 };
197 if (!inode || !offset || s ||
198 kstrtoull(inode, 10, &ret.inode) ||
199 kstrtoull(offset, 10, &ret.offset))
200 die("invalid bpos %s", buf);
205 static void list_keys_usage(void)
207 puts("bcachefs list_keys - list filesystem metadata to stdout\n"
208 "Usage: bcachefs list_keys [OPTION]... <devices>\n"
211 " -b (extents|inodes|dirents|xattrs) Btree to list from\n"
212 " -s inode:offset Start position to list from\n"
213 " -e inode:offset End position\n"
214 " -m (keys|formats) List mode\n"
215 " -h Display this help and exit\n"
216 "Report bugs to <linux-bcache@vger.kernel.org>");
219 static const char * const list_modes[] = {
225 int cmd_list(int argc, char *argv[])
227 struct bch_opts opts = bch2_opts_empty();
228 struct bch_fs *c = NULL;
229 enum btree_id btree_id = BTREE_ID_EXTENTS;
230 struct bpos start = POS_MIN, end = POS_MAX;
234 opts.nochanges = true;
235 opts.norecovery = true;
236 opts.errors = BCH_ON_ERROR_CONTINUE;
238 while ((opt = getopt(argc, argv, "b:s:e:m:h")) != -1)
241 btree_id = read_string_list_or_die(optarg,
242 bch2_btree_ids, "btree id");
245 start = parse_pos(optarg);
248 end = parse_pos(optarg);
251 mode = read_string_list_or_die(optarg,
252 list_modes, "list mode");
260 die("Please supply device(s) to check");
262 err = bch2_fs_open(argv + optind, argc - optind, opts, &c);
264 die("error opening %s: %s", argv[optind], err);
268 list_keys(c, btree_id, start, end, mode);
271 list_btree_formats(c, btree_id, start, end, mode);