Re: [PATCH] common/rc: explicitly test for engine availability in _require_fio

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On Tue, Mar 18, 2025 at 06:08:48PM +0800, Zorro Lang wrote:
> From: Eric Sandeen <sandeen@xxxxxxxxxxx>
> 
> The current test in _require_fio (--warnings-fatal --showcmd) does not
> fail if an invalid/unavailable io engine is specified.
> 
> Add an explicit test that every requested io engine in the job file
> is actually available.
> 
> Also, remove the "ioe_e4defrag" entries in the [global] stanza of several
> ext4 tests which use fio jobfiles. While ioengines can be set in the
> [global] section, they can also be overridden in individual, subsequent
> stanzas. In each affected test (ext4/301, ext4/302, ext4/303, and
> ext4/304) every individual stanza after [global]re-specifies an ioengine;
> either with ioengine=e4defrag or ioengine=libaio.
> 
> Because of this re-specification, the ioengine in the [global] section
> is ignored. This is a good thing, because ioe_e4defrag is not a valid
> ioengine, and would fail this new hand-rolled check, even though fio
> did not complain.
> 
> So rather than over-complicate this new check, simply remove the unused,
> invalid "ioengine=ioe_e4defrag" lines in these tests.
> 
> Signed-off-by: Eric Sandeen <sandeen@xxxxxxxxxx>
> Reviewed-by: Darrick J. Wong <djwong@xxxxxxxxxx>
> Reviewed-by: Zorro Lang <zlang@xxxxxxxxxx>
> Signed-off-by: Zorro Lang <zlang@xxxxxxxxxx>
> ---

Please ignore this patch, I send wrong commit...

Thanks,
Zorro

>  common/rc      | 7 +++++++
>  tests/ext4/301 | 1 -
>  tests/ext4/302 | 1 -
>  tests/ext4/303 | 1 -
>  tests/ext4/304 | 1 -
>  5 files changed, 7 insertions(+), 4 deletions(-)
> 
> diff --git a/common/rc b/common/rc
> index dcdfa86e4..e51686389 100644
> --- a/common/rc
> +++ b/common/rc
> @@ -3985,12 +3985,19 @@ _require_scratch_dev_pool_equal_size()
>  _require_fio()
>  {
>  	local job=$1
> +	local eng
>  
>  	_require_command "$FIO_PROG" fio
>  	if [ -z "$1" ]; then
>  		return 1;
>  	fi
>  
> +	# Explicitly check for every ioengine listed in the job
> +	for eng in `sed -n "s/ioengine=\(.*\)/\1/p" $job | sort -u`; do
> +		grep -wq $eng <($FIO_PROG --enghelp 2>/dev/null) || \
> +			_notrun "fio engine $eng not available"
> +	done
> +
>  	$FIO_PROG --warnings-fatal --showcmd $job >> $seqres.full 2>&1
>  	[ $? -eq 0 ] || _notrun "$FIO_PROG too old, see $seqres.full"
>  }
> diff --git a/tests/ext4/301 b/tests/ext4/301
> index abf47d4b7..a05b8e8a8 100755
> --- a/tests/ext4/301
> +++ b/tests/ext4/301
> @@ -31,7 +31,6 @@ FILE_SIZE=$((BLK_DEV_SIZE * (512 / (2 + 1))))
>  cat >$fio_config <<EOF
>  # Common e4defrag regression tests
>  [global]
> -ioengine=ioe_e4defrag
>  iodepth=1
>  directory=${SCRATCH_MNT}
>  filesize=${FILE_SIZE}
> diff --git a/tests/ext4/302 b/tests/ext4/302
> index 87820184e..e0f5f2f98 100755
> --- a/tests/ext4/302
> +++ b/tests/ext4/302
> @@ -31,7 +31,6 @@ FILE_SIZE=$((BLK_DEV_SIZE * (512 / (2 + 1))))
>  cat >$fio_config <<EOF
>  # Common e4defrag regression tests
>  [global]
> -ioengine=ioe_e4defrag
>  iodepth=1
>  directory=${SCRATCH_MNT}
>  filesize=${FILE_SIZE}
> diff --git a/tests/ext4/303 b/tests/ext4/303
> index 2381f0477..0a83e86cd 100755
> --- a/tests/ext4/303
> +++ b/tests/ext4/303
> @@ -31,7 +31,6 @@ FILE_SIZE=$((BLK_DEV_SIZE * (512 / (3+1))))
>  cat >$fio_config <<EOF
>  # Common e4defrag regression tests
>  [global]
> -ioengine=ioe_e4defrag
>  iodepth=1
>  directory=${SCRATCH_MNT}
>  filesize=${FILE_SIZE}
> diff --git a/tests/ext4/304 b/tests/ext4/304
> index 53b522ee8..5f2ae4bdc 100755
> --- a/tests/ext4/304
> +++ b/tests/ext4/304
> @@ -32,7 +32,6 @@ FILE_SIZE=$((BLK_DEV_SIZE * (512 / (2 + 1))))
>  cat >$fio_config <<EOF
>  # Common e4defrag regression tests
>  [global]
> -ioengine=ioe_e4defrag
>  iodepth=1
>  directory=${SCRATCH_MNT}
>  filesize=${FILE_SIZE}
> -- 
> 2.47.1
> 
> 





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