linux-kernel - Re: [PATCH blktests v2 2/2] nvme-rc: Cleanup fc resource before module unloading

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Message-ID: <dd3850e3-045f-75a0-4980-9f44a05fd397@nvidia.com>
Date:   Wed, 19 Apr 2023 09:41:28 +0000
From:   Chaitanya Kulkarni <chaitanyak@...dia.com>
To:     Daniel Wagner <dwagner@...e.de>,
        "linux-nvme@...ts.infradead.org" <linux-nvme@...ts.infradead.org>
CC:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-block@...r.kernel.org" <linux-block@...r.kernel.org>,
        Chaitanya Kulkarni <chaitanyak@...dia.com>,
        Shin'ichiro Kawasaki <shinichiro@...tmail.com>
Subject: Re: [PATCH blktests v2 2/2] nvme-rc: Cleanup fc resource before
 module unloading

On 4/19/23 01:47, Daniel Wagner wrote:
> Before we unload the module we should cleanup the fc resources first,
> basically reorder the shutdown sequence to be in reverse order of the
> setup path.
>
> Also unload the nvme-fcloop after usage.
>
> While at it also update the rdma stop_soft_rdma before the module
> unloading for the same reasoning.
>
> Signed-off-by: Daniel Wagner <dwagner@...e.de>
> ---
>   tests/nvme/rc | 12 +++++++-----
>   1 file changed, 7 insertions(+), 5 deletions(-)
>
> diff --git a/tests/nvme/rc b/tests/nvme/rc
> index ec0cc2d8d8cc..41f196b037d6 100644
> --- a/tests/nvme/rc
> +++ b/tests/nvme/rc
> @@ -260,18 +260,20 @@ _cleanup_nvmet() {
>   	shopt -u nullglob
>   	trap SIGINT
>   
> -	modprobe -rq nvme-"${nvme_trtype}" 2>/dev/null
> -	if [[ "${nvme_trtype}" != "loop" ]]; then
> -		modprobe -rq nvmet-"${nvme_trtype}" 2>/dev/null
> -	fi
> -	modprobe -rq nvmet 2>/dev/null
>   	if [[ "${nvme_trtype}" == "rdma" ]]; then
>   		stop_soft_rdma
>   	fi
>   	if [[ "${nvme_trtype}" == "fc" ]]; then
>   		_cleanup_fcloop "${def_local_wwnn}" "${def_local_wwpn}" \
>   			        "${def_remote_wwnn}" "${def_remote_wwpn}"
> +		modprobe -rq nvme-fcloop
>   	fi
> +
> +	modprobe -rq nvme-"${nvme_trtype}" 2>/dev/null
> +	if [[ "${nvme_trtype}" != "loop" ]]; then
> +		modprobe -rq nvmet-"${nvme_trtype}" 2>/dev/null
> +	fi
> +	modprobe -rq nvmet 2>/dev/null
>   }
>   
>   _setup_nvmet() {

were you able to test this with RDMA ?

just want to make sure we are not breaking anything since we are changing
the order of module unload and stop_soft_rdma() in this patch ...

-ck