Re: How to make btrfs forget a disk?

[David <bouncingcats@gmail.com>]

On Fri, 12 Mar 2021 at 13:39, Victor Sudakov <vas@sibptus.ru> wrote:

> btrfs thinks that /dev/nvme1n1 has a btrfs:

> # btrfs filesystem show
> Label: none  uuid: 3414ae53-f3d4-43ea-bb88-ffefc9bc86f6
>         Total devices 1 FS bytes used 1.05TiB
>         devid    1 size 2.00TiB used 1.33TiB path /dev/nvme0n1
>
> Label: none  uuid: 38f74bc8-465d-4866-8ec1-3a144741012c
>         Total devices 1 FS bytes used 831.16GiB
>         devid    1 size 3.00TiB used 1.48TiB path /dev/nvme1n1
>
> The problem is that /dev/nvme1n1 is being used for ZFS now, and there is
> currently no btrfs thereon. However, there is a btrfs label or something
> stuck somewhere, how can I clear it?

Hi,

I do not know the answer because I have never done that,
but try reading
  man 8 btrfs-device

and then perhaps
  btrfs device remove ...