On Thu, Aug 20, 2009 at 4:20 PM, Dejan Muhamedagic<[email protected]> wrote:
> Hi,
>
> On Thu, Aug 20, 2009 at 03:58:19PM +0200, Andrew Beekhof wrote:
>> On Thu, Aug 20, 2009 at 3:56 PM, Terry L.
>> Inzauro<[email protected]> wrote:
>>
>> > Ok. I am indeed using 'external/ssh' as the stonith device.   I figure it 
>> > was better than nothing as I do not have access to
>> > a hardware stonith device.  In you opinion, is using the 'external/ssh'  
>> > plugin 'better' than NOT using a stonith plugin at all?
>>
>> personally, i think so.
>> but there are plenty that disagree.
>
> Ah, that would include me :)
>
> If the stonith device fails to fence the failing node then there
> is no failover and you get zero availability.

But at least your data isn't corrupt.
What's the point of being up if you're serving up garbage?

> The probability
> that that happens is much higher when using a device such as
> external/ssh since it depends on both the network availability
> and the OS health. I'll leave it to you to figure out in how many
> ways these two dependencies can hinder a fencing operation.
>
> Thanks,
>
> Dejan
>
>
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