[Engine-devel] SSH Soft Fencing

Itamar Heim iheim at redhat.com
Tue Jul 16 12:27:18 UTC 2013


On 07/03/2013 02:55 PM, Martin Perina wrote:
> Let's summarize again, SSH Soft Fencing patches has been merged yesterday
> with following functionality:
>
> 1) For hosts with power management configured, SSH Soft Fencing is the 1st
>     fencing stage. If it doesn't help, real fencing will be executed.
>
> 2) For hosts without power management configured, SSH Soft Fencing is the only
>     fencing stage. If it doesn't help, host will become non responsive.
>
> 3) SSH Soft Fencing is enabled by default, there's no configuration option
>     to disable it
>
> 4) SshSoftFencingCommand option is used to define what command is executed
>     during SSH Soft Fencing. It can only be changed manually in database.
>
> The whole fencing process in oVirt 3.3 is decribed at
>
> http://www.ovirt.org/Automatic_Fencing#Automatic_Fencing_in_oVirt_3.3

I assume ssh soft fencing isn't considered "fencing"? i.e., i assume it 
does not release resource occupied by the host (spm, running vms)?

Thanks,
    Itamar




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