[ovirt-users] Decrease downtime for HA

[Michal Skrivanek]

> On 6 Apr 2018, at 12:45, Daniel Menzel <daniel.menzel at hhi.fraunhofer.de> wrote:
> 
> Hi Michael,
> thanks for your mail. Sorry, I forgot to write that. Yes, we have power management and fencing enabled on all hosts. We also tested this and found out that it works perfectly. So this cannot be the reason I guess.

Hi Daniel,
ok, then it’s worth looking into details. Can you describe in more detail what happens? What exact settings you’re using for such VM? Are you killing the HE VM or other VMs or both? Would be good to narrow it down a bit and then review the exact flow

Thanks,
michal

> 
> Daniel
> 
> 
> 
> On 06.04.2018 11:11, Michal Skrivanek wrote:
>>> On 4 Apr 2018, at 15:36, Daniel Menzel <daniel.menzel at hhi.fraunhofer.de> wrote:
>>> 
>>> Hello,
>>> 
>>> we're successfully using a setup with 4 Nodes and a replicated Gluster for storage. The engine is self hosted. What we're dealing with at the moment is the high availability: If a node fails (for example simulated by a forced power loss) the engine comes back up online withing ~2min. But guests (having the HA option enabled) come back online only after a very long grace time of ~5min. As we have a reliable network (40 GbE) and reliable servers I think that the default grace times are way too high for us - is there any possibility to change those values?
>> And do you have Power Management(iLO, iDRAC,etc) configured for your hosts? Otherwise we have to resort to relatively long timeouts to make sure the host is really dead
>> Thanks,
>> michal
>>> 
>>> Thanks in advance!
>>> Daniel
>>> 
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