Re: [PATCH 01/17] xfs/177: force a small file system size

["Darrick J. Wong" <djwong@kernel.org>]

On Wed, Mar 12, 2025 at 07:44:53AM +0100, Christoph Hellwig wrote:
> This test make assumptions about the number of metadata inodes.  When
> using small realtime group size (e.g. the customary 256MB for SMR
> hard drives) this assumption gets violated even with modest file system
> size.  Force a small file system size to side-step this issue.
> 
> Signed-off-by: Christoph Hellwig <hch@lst.de>
> ---
>  tests/xfs/177 | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
> 
> diff --git a/tests/xfs/177 b/tests/xfs/177
> index 82b3ca264140..8d23f66d51b7 100755
> --- a/tests/xfs/177
> +++ b/tests/xfs/177
> @@ -77,7 +77,9 @@ delay_centisecs="$(cat "$xfs_centisecs_file")"
>  sleep_seconds=$(( ( (99 + (delay_centisecs / 6) ) / 100) + 1))
>  echo "Will sleep $sleep_seconds seconds to expire inodes" >> $seqres.full
>  
> -_scratch_mkfs >> $seqres.full
> +# Force a relatively small file system size to keep the number of rtgroups
> +# and thus metadata inodes low
> +_scratch_mkfs_sized $((512 * 1024 * 1024)) >> $seqres.full

I guess that works... will try it out overnight and see what happens.
Reviewed-by: "Darrick J. Wong" <djwong@kernel.org>

--D

>  _scratch_mount >> $seqres.full
>  
>  junkdir=$SCRATCH_MNT/$seq.junk
> -- 
> 2.45.2
> 
>