Hi,

For example, in situation where host:

* laggy
* network laggy

or another manager <-> host connectivity issues - ovirt-engine can't determine 
what with host actually:

* host stuck
* host unreachable
* me (engine) unreachable
* other lossy, lags, etc

another chances for enginte to determine host is powered up or not is IPMI - 
engine tells to another (reachable) host to execute IPMI call for target host 
(problem host):

here some engine logic, when host is actually powered up - we can wait when 
management network return, or can reboot (via IPMI) host, mark host as failed, 
evacuate VM's, etc...


k

> On 18 Sep 2021, at 08:59, Tommy Sway <[email protected]> wrote:
> 
> Can somebody explain in detail when and Under what circumstances  power 
> management will works?
> 

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