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;
98 fsck_err_opt = FSCK_ERR_NO;
100 while ((opt = getopt(argc, argv, "o:fh")) != -1)
114 die("Please supply device(s) to check");
117 die("Please supply output filename");
119 err = bch2_fs_open(argv + optind, argc - optind, opts, &c);
121 die("error opening %s: %s", argv[optind], err);
123 down_read(&c->gc_lock);
125 for (i = 0; i < c->sb.nr_devices; i++)
131 for (i = 0; i < c->sb.nr_devices; i++) {
132 int mode = O_WRONLY|O_CREAT|O_TRUNC;
140 char *path = nr_devices > 1
141 ? mprintf("%s.%u", out, i)
143 fd = xopen(path, mode, 0600);
146 dump_one_device(c, c->devs[i], fd);
150 up_read(&c->gc_lock);
156 static void list_keys(struct bch_fs *c, enum btree_id btree_id,
157 struct bpos start, struct bpos end, int mode)
159 struct btree_iter iter;
163 for_each_btree_key(&iter, c, btree_id, start, k) {
164 if (bkey_cmp(k.k->p, end) > 0)
167 bch2_bkey_val_to_text(c, bkey_type(0, btree_id),
168 buf, sizeof(buf), k);
171 bch2_btree_iter_unlock(&iter);
174 static void list_btree_formats(struct bch_fs *c, enum btree_id btree_id,
175 struct bpos start, struct bpos end, int mode)
177 struct btree_iter iter;
181 for_each_btree_node(&iter, c, btree_id, start, 0, b) {
182 if (bkey_cmp(b->key.k.p, end) > 0)
185 bch2_print_btree_node(c, b, buf, sizeof(buf));
188 bch2_btree_iter_unlock(&iter);
191 static struct bpos parse_pos(char *buf)
194 char *inode = strsep(&s, ":");
195 char *offset = strsep(&s, ":");
196 struct bpos ret = { 0 };
198 if (!inode || !offset || s ||
199 kstrtoull(inode, 10, &ret.inode) ||
200 kstrtoull(offset, 10, &ret.offset))
201 die("invalid bpos %s", buf);
206 static void list_keys_usage(void)
208 puts("bcachefs list_keys - list filesystem metadata to stdout\n"
209 "Usage: bcachefs list_keys [OPTION]... <devices>\n"
212 " -b (extents|inodes|dirents|xattrs) Btree to list from\n"
213 " -s inode:offset Start position to list from\n"
214 " -e inode:offset End position\n"
215 " -m (keys|formats) List mode\n"
216 " -h Display this help and exit\n"
217 "Report bugs to <linux-bcache@vger.kernel.org>");
220 static const char * const list_modes[] = {
226 int cmd_list(int argc, char *argv[])
228 struct bch_opts opts = bch2_opts_empty();
229 struct bch_fs *c = NULL;
230 enum btree_id btree_id = BTREE_ID_EXTENTS;
231 struct bpos start = POS_MIN, end = POS_MAX;
235 opts.nochanges = true;
236 opts.norecovery = true;
237 opts.errors = BCH_ON_ERROR_CONTINUE;
238 fsck_err_opt = FSCK_ERR_NO;
240 while ((opt = getopt(argc, argv, "b:s:e:m:h")) != -1)
243 btree_id = read_string_list_or_die(optarg,
244 bch2_btree_ids, "btree id");
247 start = parse_pos(optarg);
250 end = parse_pos(optarg);
253 mode = read_string_list_or_die(optarg,
254 list_modes, "list mode");
262 die("Please supply device(s) to check");
264 err = bch2_fs_open(argv + optind, argc - optind, opts, &c);
266 die("error opening %s: %s", argv[optind], err);
270 list_keys(c, btree_id, start, end, mode);
273 list_btree_formats(c, btree_id, start, end, mode);