Re: [chrony-users] Request: Add an optional timeout option for 'chronyd -q ...'

[Lonnie Abelbeck <lists@xxxxxxxxxxxxxxxxxxx>]

On Dec 2, 2016, at 7:57 AM, Miroslav Lichvar <mlichvar@xxxxxxxxxx> wrote:

> On Thu, Dec 01, 2016 at 07:07:53AM -0600, Lonnie Abelbeck wrote:
>>> How about returning 0 if the clock was in a synchronised state (the
>>> reference was updated at least once) and 1 if not? With -q that would
>>> be 0 only if the clock was stepped.
>> 
>> Yes, that would work for our situation.
>> 
>> For example using "chronyd -q -u ntp -t 10", if after 5 seconds the clock was in a synchronized state, it steps the clock and exits 0.  Alternatively if after 10 seconds the clock was not yet in a synchronized state, it would exit with a non-zero (timeout) return.
> 
> The -t option is now in git. If you test it, please let me know if it
> works for you as expected.

Works perfectly !

You will want to add the -t option to the Usage:
--
    } else if (!strcmp("-h", *argv) || !strcmp("--help", *argv)) {
-     printf("Usage: %s [-4|-6] [-n|-d] [-q|-Q] [-r] [-R] [-s] [-f FILE|COMMAND...]\n",
+     printf("Usage: %s [-4|-6] [-n|-d] [-q|-Q] [-r] [-R] [-s] [-t secs] [-f FILE|COMMAND...]\n",
--

I'm thinking " -t 8 " will be our production value.  Typically it takes 4.5 to 5.5 seconds for most any pool server.
--
chronyd -q -t 8 'server pool.ntp.org iburst'
--

Lonnie


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