Antw: Re: Q: dampening explained?
"Ulrich Windl" <[email protected]>
| Newsgroups | gmane.linux.highavailability.user |
|---|---|
| Message-ID | <[email protected]> |
>>> Andrew Beekhof <[email protected]> schrieb am 09.09.2014 um 00:25 in Nachricht <[email protected]>: > On 8 Sep 2014, at 5:19 pm, Ulrich Windl <[email protected]> > wrote: > >> Hi! >> >> I remember having asked this before, but I'l still missing a good > explanation: >> >> What are the precise semantics of "dampening" (attrd_updater -d)? >> >> The manual page just says: >> -d, --delay=value >> The time to wait (dampening) in seconds further changes occur >> >> Who is waiting? > > attrd before it updates the cib So the RA sees an extra delay of -d seconds? > >> What changes? > > other processes or nodes calling attrd_updater So it means that if you call "attr_updater -d X" and then "attr_updater -d Y" the second update will be delayed until at least X seconds since the first update passed? If a third "attr_updater -d Z" is called, will the system ensure that at least X + Y seconds passed since the first update before appying the third update? If the delay is not over, does the next update wait (as I guessed), or is the next update simply ignored? > >> Please explain! As you see, there are too many questions that are still unanswered. >> (pacemaker-1.1.10-0.15.25 of SLES11 SP3) >> >> Regards, >> Ulrich _______________________________________________ Linux-HA mailing list [email protected] http://lists.linux-ha.org/mailman/listinfo/linux-ha See also: http://linux-ha.org/ReportingProblems