From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Benjamin Marzinski" Subject: Re: [PATCH v5 11/21] multipathd: improve checker message logging Date: Fri, 2 Nov 2018 11:54:20 -0500 Message-ID: <20181102165420.GF29522@octiron.msp.redhat.com> References: <20181102122125.30906-1-mwilck@suse.com> <20181102122125.30906-12-mwilck@suse.com> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Content-Disposition: inline In-Reply-To: <20181102122125.30906-12-mwilck@suse.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dm-devel-bounces@redhat.com Errors-To: dm-devel-bounces@redhat.com To: Martin Wilck Cc: dm-devel@redhat.com List-Id: dm-devel.ids On Fri, Nov 02, 2018 at 01:21:15PM +0100, Martin Wilck wrote: > Don't rely on any variables being defined in LOG_MSG. > If message log level is low, don't bother to fetch the message. > Reviewed-by: Benjamin Marzinski > Signed-off-by: Martin Wilck > --- > multipathd/main.c | 35 ++++++++++++++++++++++++----------- > 1 file changed, 24 insertions(+), 11 deletions(-) > > diff --git a/multipathd/main.c b/multipathd/main.c > index bf5f12a6..2f922db7 100644 > --- a/multipathd/main.c > +++ b/multipathd/main.c > @@ -89,12 +89,24 @@ static int use_watchdog; > #define FILE_NAME_SIZE 256 > #define CMDSIZE 160 > > -#define LOG_MSG(a, b) \ > -do { \ > - if (pp->offline) \ > - condlog(a, "%s: %s - path offline", pp->mpp->alias, pp->dev); \ > - else if (strlen(b)) \ > - condlog(a, "%s: %s - %s", pp->mpp->alias, pp->dev, b); \ > +#define LOG_MSG(lvl, verb, pp) \ > +do { \ > + if (lvl <= verb) { \ > + if (pp->offline) \ > + condlog(lvl, "%s: %s - path offline", \ > + pp->mpp->alias, pp->dev); \ > + else { \ > + const char *__m = \ > + checker_message(&pp->checker); \ > + \ > + if (strlen(__m)) \ > + condlog(lvl, "%s: %s - %s checker%s", \ > + pp->mpp->alias, \ > + pp->dev, \ > + checker_name(&pp->checker), \ > + __m); \ > + } \ > + } \ > } while(0) > > struct mpath_event_param > @@ -1811,7 +1823,7 @@ check_path (struct vectors * vecs, struct path * pp, int ticks) > int add_active; > int disable_reinstate = 0; > int oldchkrstate = pp->chkrstate; > - int retrigger_tries, checkint, max_checkint; > + int retrigger_tries, checkint, max_checkint, verbosity; > struct config *conf; > int ret; > > @@ -1828,6 +1840,7 @@ check_path (struct vectors * vecs, struct path * pp, int ticks) > retrigger_tries = conf->retrigger_tries; > checkint = conf->checkint; > max_checkint = conf->max_checkint; > + verbosity = conf->verbosity; > put_multipath_config(conf); > if (!pp->mpp && pp->initialized == INIT_MISSING_UDEV) { > if (pp->retriggers < retrigger_tries) { > @@ -1970,7 +1983,7 @@ check_path (struct vectors * vecs, struct path * pp, int ticks) > int oldstate = pp->state; > pp->state = newstate; > > - LOG_MSG(1, checker_message(&pp->checker)); > + LOG_MSG(1, verbosity, pp); > > /* > * upon state change, reset the checkint > @@ -2058,7 +2071,7 @@ check_path (struct vectors * vecs, struct path * pp, int ticks) > return 0; > } > } else { > - LOG_MSG(4, checker_message(&pp->checker)); > + LOG_MSG(4, verbosity, pp); > if (pp->checkint != max_checkint) { > /* > * double the next check delay. > @@ -2088,9 +2101,9 @@ check_path (struct vectors * vecs, struct path * pp, int ticks) > log_checker_err = conf->log_checker_err; > put_multipath_config(conf); > if (log_checker_err == LOG_CHKR_ERR_ONCE) > - LOG_MSG(3, checker_message(&pp->checker)); > + LOG_MSG(3, verbosity, pp); > else > - LOG_MSG(2, checker_message(&pp->checker)); > + LOG_MSG(2, verbosity, pp); > } > } > > -- > 2.19.1