Re: [PATCH blktests v3 04/12] common/xfs: Limit fio size job to fit into xfs fs

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On 5/3/23 01:02, Daniel Wagner wrote:
> The usable capacity of the filesystem is less than the raw
> partition/device size due to the additional meta/log data.
>
> Ensure that the job size for fio is not exceeding the limits.
>
> Because we have hard coded the path where we mount the filesystem
> and don't want to expose this, we just update max size inside
> _xfs_run_fio_verify_io(). No need to leak this into the caller.
>
> Signed-off-by: Daniel Wagner <dwagner@xxxxxxx>
> ---
>   common/xfs | 3 +++
>   1 file changed, 3 insertions(+)
>
> diff --git a/common/xfs b/common/xfs
> index 413c2820ffaf..37ce85878df2 100644
> --- a/common/xfs
> +++ b/common/xfs
> @@ -37,6 +37,9 @@ _xfs_run_fio_verify_io() {
>   		sz_mb="${avail_mb}"
>   	else
>   		sz_mb="$(convert_to_mb "${sz}")"
> +		if [[ "${sz_mb}" -gt "${avail_mb}" ]]; then
> +			sz_mb="${avail_mb}"
> +		fi
>   	fi
>   
>   	_run_fio_verify_io --size="${sz_mb}m" --directory="${mount_dir}/"


this is exactly how it should to start with, the only
is now we are silently reducing the fio job size maybe that is okay ?

or we should error out here instead of being smart ?

-ck






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