RE: [ndctl PATCH 1/2] ndctl, monitor: fix the severity of the "daemon started" message

["Qi, Fuli" <qi.fuli@jp.fujitsu.com>]

> -----Original Message-----
> From: Linux-nvdimm [mailto:linux-nvdimm-bounces@lists.01.org] On Behalf Of Dan
> Williams
> Sent: Friday, October 5, 2018 1:24 PM
> To: Gotou, Yasunori/五島 康文 <y-goto@jp.fujitsu.com>
> Cc: andreas@canonical.com; linux-nvdimm <linux-nvdimm@lists.01.org>
> Subject: Re: [ndctl PATCH 1/2] ndctl, monitor: fix the severity of the "daemon
> started" message
> 
> On Thu, Oct 4, 2018 at 9:09 PM Yasunori Goto <y-goto@jp.fujitsu.com> wrote:
> >
> > Hi, Vishal-san,
> >
> > > The above message was printed as an error, but it is just an
> > > informational message. Change it to dbg().
> >
> > Hmmmmmmm.
> >
> > When I was a engineer for trouble-shooting of customer's Linux system,
> > the starting time and the ending time of any daemon was very helpful
> > for investigating their trouble.
> >
> > So, I think it is not only for developer, but also it is essential for
> > trouble-shooter for custmer support.
> > (It may be also same with system operator)
> >
> >
> > >
> > > Cc: QI Fuli <qi.fuli@jp.fujitsu.com>
> > > Cc: Dan Williams <dan.j.williams@intel.com>
> > > Signed-off-by: Vishal Verma <vishal.l.verma@intel.com>
> > > ---
> > >  ndctl/monitor.c | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/ndctl/monitor.c b/ndctl/monitor.c index
> > > d29e378..b44f946 100644
> > > --- a/ndctl/monitor.c
> > > +++ b/ndctl/monitor.c
> > > @@ -660,7 +660,7 @@ int cmd_monitor(int argc, const char **argv, void *ctx)
> > >                       err((struct ndctl_ctx *)ctx, "daemon start failed\n");
> > >                       goto out;
> > >               }
> > > -             err((struct ndctl_ctx *)ctx, "ndctl monitor daemon started\n");
> > > +             dbg((struct ndctl_ctx *)ctx, "ndctl monitor daemon
> > > + started\n");
> >
> > Though I agree its message is not "error" certainly, I would like to
> > keep it as normal status level message.
> >
> 
> Sounds good to me.

In my original idea, I just wanted to log the "daemon started" message.
After thinking more about it, I agree that the message is not at "error" level.
However, considering this message will be helpful for some users like system operators,
how about changing this message level to "info" and meanwhile changing the default log level to "LOG_INFO" as following?

diff --git a/ndctl/monitor.c b/ndctl/monitor.c
index d29e378..10866b6 100644
--- a/ndctl/monitor.c
+++ b/ndctl/monitor.c
@@ -628,7 +628,7 @@ int cmd_monitor(int argc, const char **argv, void *ctx)
        if (monitor.verbose)
                ndctl_set_log_priority((struct ndctl_ctx *)ctx, LOG_DEBUG);
        else
-               ndctl_set_log_priority((struct ndctl_ctx *)ctx, LOG_NOTICE);
+               ndctl_set_log_priority((struct ndctl_ctx *)ctx, LOG_INFO);

        rc = read_config_file((struct ndctl_ctx *)ctx, &monitor, &param);
        if (rc)
@@ -657,7 +657,7 @@ int cmd_monitor(int argc, const char **argv, void *ctx)
                if (!monitor.log || strncmp(monitor.log, "./", 2) == 0)
                        ndctl_set_log_fn((struct ndctl_ctx *)ctx, log_syslog);
                if (daemon(0, 0) != 0) {
-                       err((struct ndctl_ctx *)ctx, "daemon start failed\n");
+                       info((struct ndctl_ctx *)ctx, "daemon start failed\n");
                        goto out;
                }
                err((struct ndctl_ctx *)ctx, "ndctl monitor daemon started\n");

Thank you very much,
QI Fuli
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