Re: [PATCH] generic/475: fix confusing comment

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On Mon, May 21, 2018 at 09:07:34AM -0700, Darrick J. Wong wrote:
> From: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> 
> The comment about the dmerror switcheroo is hard to understand and
> wrong.  Fix both problems by rewriting it.
> 
> Signed-off-by: Darrick J. Wong <darrick.wong@xxxxxxxxxx>
> ---
>  tests/generic/475 |    8 +++++---
>  1 file changed, 5 insertions(+), 3 deletions(-)
> 
> diff --git a/tests/generic/475 b/tests/generic/475
> index e31f1251..45072278 100755
> --- a/tests/generic/475
> +++ b/tests/generic/475
> @@ -73,9 +73,11 @@ for i in $(seq 1 $((50 * TIME_FACTOR)) ); do
>  	# recovery
>  	sleep $((RANDOM % 3))
>  
> -	# Loading error table without "--nolockfs" option. Because "--nolockfs"
> -	# won't freeze fs, then some running I/Os may cause XFS to shutdown
> -	# prematurely. That's not what we want to test.
> +	# This test aims to simulate sudden disk failure, which means that we
> +	# do not want to quiesce the filesystem or otherwise give it a chance
> +	# to flush its logs.  Therefore we want to call dmsetup with the
> +	# --nolockfs parameter; to make this happen we must call the load
> +	# error table helper *without* 'lockfs'.

Thanks! This looks good to me!


>  	_dmerror_load_error_table
>  
>  	ps -e | grep fsstress > /dev/null 2>&1
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