[Info-vax] delay in startup
FrankS
sapienza at noesys.com
Sat Mar 24 17:19:11 EDT 2012
On Saturday, March 24, 2012 7:35:57 AM UTC-4, Phillip Helbig---undress to reply wrote:
> While I was travelling, power went off for a few hours for
> maintenance.
>
> 13-MAR-2012 17:35:38.00 MINNIM 13-MAR-2012 17:38:31.84
> 13-MAR-2012 14:46:40.00 JANDER 13-MAR-2012 17:38:59.19
>
> The three minutes for MINNIM between booting and writing to the file is
> about what I expect. JANDER waited for MINNIM to boot (quorum is 2), so
> that explains the almost three-hour wait between booting and writing for
> JANDER, but why did MINNIM boot almost three hours after JANDER? All
> the nodes lost power at the same time.
>
What do I win if I guess correctly?
Power failed around 14:46.
Jander crashed when quorum was lost, but its battery backup survived the entire (approximately) three hour outage. Therefore, it rebooted immediately and then went into a wait until quorum could be regained.
Minnim had no battery backup and crashed hard (and cold).
Power was restored around 17:35.
Minnim reboots. Quorum is restored. Due to variability in getting through the startup procedure Minnim writes the "I'm alive" message before Jander does. I'm speculating that a third node in the cluster may have been responsible for part of the delay.
More information about the Info-vax
mailing list