btrfs-progs: convert: improve error hanling of init_btrfs

Replace BUG_ONs and verbosely report the errors.

Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/btrfs-convert.c b/btrfs-convert.c
index 66f62e8..d2ff517 100644 (file)
--- a/btrfs-convert.c
+++ b/btrfs-convert.c
@@ -1298,7 +1298,11 @@ static int init_btrfs(struct btrfs_mkfs_config *cfg, struct btrfs_root *root,
        fs_info->avoid_sys_chunk_alloc = 1;
        fs_info->avoid_meta_chunk_alloc = 1;
        trans = btrfs_start_transaction(root, 1);
-       BUG_ON(!trans);
+       if (!trans) {
+               error("unable to start transaction");
+               ret = -EINVAL;
+               goto err;
+       }
        ret = btrfs_fix_block_accounting(trans, root);
        if (ret)
                goto err;