# Re: \[PATCH\] bcache-tools: bcache-export-cached doesn't match backing device w/ offset, features

- From: Coly Li \<hidden\>
- Date: 2021-06-03 15:05:28 
- List: linux-bcache
- Page: https://ratatoskr.run/linux-bcache/2021/06/7648101
- Thread: https://ratatoskr.run/linux-bcache/2021/05/7648068/t.md

```text
On 5/12/21 3:06 AM, Marc Smith wrote:
> updated the awk snippet used in 'bcache-export-cached' so it matches the three
> current superblock versions of a "backing" device (BCACHE_SB_VERSION_BDEV,
> BCACHE_SB_VERSION_BDEV_WITH_OFFSET, BCACHE_SB_VERSION_BDEV_WITH_FEATURES)
>
> Signed-off-by: Marc A. Smith <redacted>
> ---
>  bcache-export-cached | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/bcache-export-cached b/bcache-export-cached
> index b345922..e6c1bc3 100644
> --- a/bcache-export-cached
> +++ b/bcache-export-cached
> @@ -19,7 +19,7 @@ for slave in "/sys/class/block/$DEVNAME/slaves"/*; do
>              $1 == "dev.uuid" { uuid=$2; }
>              $1 == "dev.label" && $2 != "(empty)" { label=$2; }
>              END {
> -                if (sbver == 1 && uuid) {
> +                if ((sbver == 1 || sbver == 4 || sbver == 6) && uuid) {
>                      print("CACHED_UUID=" uuid)
>                      if (label) print("CACHED_LABEL=" label)
>                      exit(0)

Applied. Thanks.

Coly Li
```