On Mon, Jun 13, 2022 at 8:59 PM Ihar Hrachyshka <[email protected]> wrote:
>
> FYI checked that with -fake-multinode. Also checked that if I modify
> start_northd to pass $cmd (as ovsdb-server), it also correctly matches
> it (and failing when $cmd is anything different).

Thanks for fixing this issue.  The function is much simple to
understand, at least for me.

I applied this patch to the main branch and backported upto branch-21.12.

Numan

>
> On Mon, Jun 13, 2022 at 8:45 PM Ihar Hrachyshka <[email protected]> wrote:
> >
> > [ -z $string ] needs double quotes to handle zero-length strings
> > properly.
> >
> > The function became a long one-liner; this patch converts it to a
> > version that is hopefully simpler to understand. (As a bonus, it no
> > longer violates the guideline for line length.)
> >
> > Fixes: 09dc4866fd32 ("Handle re-used pids in pidfile_is_running")
> > Signed-off-by: Ihar Hrachyshka <[email protected]>
> > ---
> > v2: fixed several syntax errors.
> > v2: converted from one liner to a sequence of if-then checks.
> > v2: squashed with a patch that removes redundant [ -e $file ] check.
> > v1: initial version
> > ---
> >  utilities/ovn-ctl | 16 ++++++++++++++--
> >  1 file changed, 14 insertions(+), 2 deletions(-)
> >
> > diff --git a/utilities/ovn-ctl b/utilities/ovn-ctl
> > index e2f05915b..23d4d7f8c 100755
> > --- a/utilities/ovn-ctl
> > +++ b/utilities/ovn-ctl
> > @@ -43,8 +43,20 @@ ovn_ic_db_conf_file="$ovn_etcdir/ovn-ic-db-params.conf"
> >  pidfile_is_running () {
> >      pidfile=$1
> >      cmd=$2
> > -    test -e "$pidfile" && [ -s "$pidfile" ] && pid=`cat "$pidfile"` && 
> > pid_exists "$pid" && [ -z $cmd -o pid_comm_check "$cmd" "$pid" ]
> > -} >/dev/null 2>&1
> > +    if [ ! -s "$pidfile" ]; then
> > +        # file missing or empty
> > +        return 1
> > +    fi
> > +    pid=`cat "$pidfile"`
> > +    if ! pid_exists $pid; then
> > +        # pid is dead
> > +        return 1
> > +    fi
> > +    if [ -n "$cmd" ]; then
> > +        return $(pid_comm_check "$cmd" "$pid")
> > +    fi
> > +    return 0
> > +}
> >
> >  stop_nb_ovsdb() {
> >      OVS_RUNDIR=${OVS_RUNDIR} stop_ovn_daemon ovnnb_db $DB_NB_PIDFILE 
> > $DB_NB_CTRL_SOCK
> > --
> > 2.34.1
> >
>
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