Commit 77177ed1 authored by Qu Wenruo's avatar Qu Wenruo Committed by David Sterba
Browse files

btrfs: add error message for metadata level mismatch 

From a recent regression report, we found that after commit 947a6299
("btrfs: move tree block parentness check into
validate_extent_buffer()") if we have a level mismatch (false alert
though), there is no error message at all.

This makes later debugging harder.  This patch will add the proper error
message for such case.

Link: https://lore.kernel.org/linux-btrfs/CABXGCsNzVxo4iq-tJSGm_kO1UggHXgq6CdcHDL=z5FL4njYXSQ@mail.gmail.com/


Reviewed-by: default avatarAnand Jain <anand.jain@oracle.com>
Signed-off-by: default avatarQu Wenruo <wqu@suse.com>
Signed-off-by: default avatarDavid Sterba <dsterba@suse.com>
parent 946c2923

fs/btrfs/disk-io.c

+3 −0
Original line number Diff line number Diff line
@@ -530,6 +530,9 @@ static int validate_extent_buffer(struct extent_buffer *eb, 
	}



	if (found_level != check->level) {

		btrfs_err(fs_info,

		"level verify failed on logical %llu mirror %u wanted %u found %u",

			  eb->start, eb->read_mirror, check->level, found_level);

		ret = -EIO;

		goto out;

	}