[dm-devel] [PATCH v2 22/23] multipathd: update path group prio in check_path

[Benjamin Marzinski]

On Tue, Mar 06, 2018 at 12:15:06AM +0100, Martin Wilck wrote:
> The previous patch "libmultipath: don't update path groups when printing"
> removed the call to path_group_prio_update() in the printing code path.
> To compensate for that, recalculate path group prio also when it's not
> strictly necessary (i.e. if failback "manual" is set).
> 

Reviewed-by: Benjamin Marzinski <bmarzins at redhat.com>
> Signed-off-by: Martin Wilck <mwilck at suse.com>
> ---
>  multipathd/main.c | 8 ++++++--
>  1 file changed, 6 insertions(+), 2 deletions(-)
> 
> diff --git a/multipathd/main.c b/multipathd/main.c
> index 465a1e291226..4abdd8f071c3 100644
> --- a/multipathd/main.c
> +++ b/multipathd/main.c
> @@ -252,8 +252,9 @@ need_switch_pathgroup (struct multipath * mpp, int refresh)
>  	struct path * pp;
>  	unsigned int i, j;
>  	struct config *conf;
> +	int bestpg;
>  
> -	if (!mpp || mpp->pgfailback == -FAILBACK_MANUAL)
> +	if (!mpp)
>  		return 0;
>  
>  	/*
> @@ -272,8 +273,11 @@ need_switch_pathgroup (struct multipath * mpp, int refresh)
>  	if (!mpp->pg || VECTOR_SIZE(mpp->paths) == 0)
>  		return 0;
>  
> -	mpp->bestpg = select_path_group(mpp);
> +	bestpg = select_path_group(mpp);
> +	if (mpp->pgfailback == -FAILBACK_MANUAL)
> +		return 0;
>  
> +	mpp->bestpg = bestpg;
>  	if (mpp->bestpg != mpp->nextpg)
>  		return 1;
>  
> -- 
> 2.16.1