On 2020/7/2 上午4:14, Marc Lehmann wrote:
> On Wed, Jul 01, 2020 at 09:30:25AM +0800, Qu Wenruo <quwenruo.btrfs@gmx.com> wrote:
>> This looks like an old fs with some bad accounting numbers.
> 
> Yeah, but it's not.
> 
>> Have you tried btrfs rescue fix-device-size?
> 
> Why would I want to try this?
> 

Read the man page of "btrfs-rescue".