Robinhood Team,
Without any Purge_Trigger entries, and even after a full scan,
"rbh-report -a" gives an error: "Storage usage has never been checked".
I'm not sure if this is a bug or a configuration problem on my side or
just missing documentation of the behavior. I'm setting up a very
simple test configuration for now, using robinhood-2.4.3 to scan a
Lustre-1.8.8 file system and start pulling statistics out of it.
>From what I can determine from the source, the output message appears to
be because the "USAGE_MAX_VAR" database variable is never initialized.
That variable is only set in
"src/policy_modules/purge/resmon_triggers.c" in the trigger_check_thr()
subroutine, which is called from Start_ResourceMonitor().
Unfortunately, that routine is only called when purging. Even if using
the "--check-thresholds" option to the robinhood daemon,
Start_ResourceMonitor() has a check at the top of it which fails for our
"simple" configuration, as you can see in the logs:
2013/11/09 17:12:52 robinhood@n448[7493/1]: ResMonitor | No purge
trigger defined in configuration file... Disabling automatic purges.
I believe I have worked around the problem by adding the following
configuration:
Purge_Trigger
{
trigger_on = global_usage ;
high_threshold_pct = 99% ;
low_threshold_pct = 98% ;
check_interval = 30d ;
}
...and then re-running robinhood with the check thresholds option:
# robinhood -f lfstmp.conf --scan -C --once -d
Can you please confirm what the behavior should be?
As it stands now, I don't believe the "Run your first Robinhood
instance" section of the Configuration Tutorial doc works quite as written.
Sorry if I missed something obvious!
Thanks,
Nathan
--
Nathan Dauchy
NOAA R&D HPCS, Senior Systems Engineer
325 Broadway, MS R-GSD2, Boulder, CO 80305
303-497-4675 office, 303-482-7377 mobile
[email protected]
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