If extent tree is corrupted then open_ctree without OPEN_CTREE_NO_BLOCK_GROUPS
does fail preventing use of btrfs-map-logical at all.
Also even if we can't find extent it still can be useful to get physical
offset which could be correct.
Signed-off-by: Dāvis Mosāns <davis...@gmail.com>
---
btrfs-map-logical.c | 7 ++++++-
1 file changed, 6 insertions(+), 1 deletion(-)
diff --git a/btrfs-map-logical.c b/btrfs-map-logical.c
index 24c81b8d..d121a8c4 100644
--- a/btrfs-map-logical.c
+++ b/btrfs-map-logical.c
@@ -261,7 +261,7 @@ int main(int argc, char **argv)
radix_tree_init();
cache_tree_init(&root_cache);
- root = open_ctree(dev, 0, 0);
+ root = open_ctree(dev, 0, OPEN_CTREE_NO_BLOCK_GROUPS);
if (!root) {
fprintf(stderr, "Open ctree failed\n");
free(output_file);
@@ -298,6 +298,9 @@ int main(int argc, char **argv)
errno = -ret;
fprintf(stderr, "Failed to find extent at [%llu,%llu): %m\n",
cur_logical, cur_logical + cur_len);
+ fprintf(stderr, "Trying a guess!\n");
+ print_mapping_info(root->fs_info, logical, bytes);
+
goto out_close_fd;
}
/*
@@ -358,6 +361,8 @@ int main(int argc, char **argv)
if (!found) {
fprintf(stderr, "No extent found at range [%llu,%llu)\n",
logical, logical + bytes);
+ fprintf(stderr, "Trying a guess!\n");
+ print_mapping_info(root->fs_info, logical, bytes);
}
out_close_fd:
if (output_file && out_fd != 1)
--
2.30.2
