diff --git a/check/main.c b/check/main.c index 263a377d..3bad72c5 100644 --- a/check/main.c +++ b/check/main.c @@ -3437,8 +3437,10 @@ static int check_fs_root(struct btrfs_root *root, { int ret = 0; int err = 0; + bool generation_err = false; int wret; int level; + u64 super_generation; struct btrfs_path path; struct shared_node root_node; struct root_record *rec; @@ -3449,6 +3451,23 @@ static int check_fs_root(struct btrfs_root *root, struct unaligned_extent_rec_t *urec; struct unaligned_extent_rec_t *tmp; + super_generation = btrfs_super_generation(root->fs_info->super_copy); + if (btrfs_root_generation(root_item) > super_generation + 1) { + error( + "invalid generation for root %llu, have %llu expect (0, %llu]", + root->root_key.objectid, btrfs_root_generation(root_item), + super_generation + 1); + generation_err = true; + if (repair) { + root->node->flags |= EXTENT_BAD_TRANSID; + ret = recow_extent_buffer(root, root->node); + if (!ret) { + printf("Reset generation for root %llu\n", + root->root_key.objectid); + generation_err = false; + } + } + } /* * Reuse the corrupt_block cache tree to record corrupted tree block * @@ -3597,6 +3616,8 @@ skip_walking: free_corrupt_blocks_tree(&corrupt_blocks); root->fs_info->corrupt_blocks = NULL; + if (!ret && generation_err) + ret = -1; return ret; }