linux-kernel - Re: [PATCH] orangefs: rate limit the client not running info message

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Message-ID: <CAOg9mSTSiqaAiSuxN5uqQWoMF1W5ZXFgZ36jFHOFHRVe7CMraw@mail.gmail.com>
Date:   Fri, 7 Sep 2018 14:01:48 -0400
From:   Mike Marshall <hubcap@...ibond.com>
To:     colin.king@...onical.com
Cc:     Martin Brandenburg <martin@...ibond.com>, devel@...ts.orangefs.org,
        kernel-janitors@...r.kernel.org,
        LKML <linux-kernel@...r.kernel.org>,
        Mike Marshall <hubcap@...ibond.com>
Subject: Re: [PATCH] orangefs: rate limit the client not running info message

Thanks... I've applied your patch to 4.19-rc2 and run it through xfstests.
It is in my linux-next tree now.

I put that in there because I'm really just an old system administrator,
and I would always be happy when I could tail dmesg and see some
hint at why something wasn't doing as I expected.

I just looked in ratelimit.h and at the ratelimit macros in printk.h,
I should try to think about those more when adding sysadmin-alert
messages.

-Mike
On Wed, Sep 5, 2018 at 10:54 AM Colin King <colin.king@...onical.com> wrote:
>
> From: Colin Ian King <colin.king@...onical.com>
>
> Currently accessing various /sys/fs/orangefs files will spam the
> kernel log with the following info message when the client is not
> running:
>
> [  491.489284] sysfs_service_op_show: Client not running :-5:
>
> Rate limit this info message to make it less spammy.
>
> Signed-off-by: Colin Ian King <colin.king@...onical.com>
> ---
>  fs/orangefs/orangefs-sysfs.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/fs/orangefs/orangefs-sysfs.c b/fs/orangefs/orangefs-sysfs.c
> index dd28079f518c..19739aaee675 100644
> --- a/fs/orangefs/orangefs-sysfs.c
> +++ b/fs/orangefs/orangefs-sysfs.c
> @@ -323,7 +323,7 @@ static ssize_t sysfs_service_op_show(struct kobject *kobj,
>         /* Can't do a service_operation if the client is not running... */
>         rc = is_daemon_in_service();
>         if (rc) {
> -               pr_info("%s: Client not running :%d:\n",
> +               pr_info_ratelimited("%s: Client not running :%d:\n",
>                         __func__,
>                         is_daemon_in_service());
>                 goto out;
> --
> 2.17.1
>