Re: [PATCH] common: call _require_scratch_dedupe from _require_scratch_duperemove

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On Tue, Dec 10, 2024 at 07:53:15AM +0100, Christoph Hellwig wrote:
> _require_scratch_duperemove doesn't check if the scratch file system
> actually supports dedup, so add the proper call for that.
> 
> Signed-off-by: Christoph Hellwig <hch@xxxxxx>

Looks ok,
Reviewed-by: "Darrick J. Wong" <djwong@xxxxxxxxxx>

> ---
> 
> Btw, I wonder if we should simply stop using dupremove in favor of the
> xfs_io dedup command which seems lot less cumbersome?  For now this is
> a quick fix, though.

In the old days of xfs reflink support, duperemove was a good trigger of
argument parsing bugs because it would effectively launch 1000 ships of
weird at the kernel.  I haven't seen 559 or 560 barf in a few years
though, and I've had 561 disabled for years because it takes forever to
finish.

--D

>  common/reflink | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/common/reflink b/common/reflink
> index 22adc4449bc6..9177c45e70bb 100644
> --- a/common/reflink
> +++ b/common/reflink
> @@ -83,6 +83,8 @@ _require_scratch_duperemove()
>  
>  	_scratch_mkfs > /dev/null
>  	_scratch_mount
> +	_require_scratch_dedupe
> +
>  	dd if=/dev/zero of="$SCRATCH_MNT/file1" bs=128k count=1 >& /dev/null
>  	dd if=/dev/zero of="$SCRATCH_MNT/file2" bs=128k count=1 >& /dev/null
>  	if ! "$DUPEREMOVE_PROG" -d "$SCRATCH_MNT/file1" \
> -- 
> 2.45.2
> 
> 




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