Add such ability to original mode to fix root generation mismatch, which
can be rejected by kernel.
Signed-off-by: Qu Wenruo <wqu@xxxxxxxx>
---
check/main.c | 21 +++++++++++++++++++++
1 file changed, 21 insertions(+)
diff --git a/check/main.c b/check/main.c
index 98b07fcb58c8..ae3ce13e9466 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;
}
--
2.22.0
