[ClusterLabs] Antw: Re: 2-Node Cluster Pointless?

Dmitri Maziuk dmaziuk at bmrb.wisc.edu
Sun Apr 23 15:21:07 EDT 2017

On 4/22/2017 11:51 PM, Andrei Borzenkov wrote:

> As a real life example (not Linux/pacemaker) - panicking node flush
> eddisk buffers, so it was not safe to access shared filesystem until
> this was complete. This could take quite a lot of time, so without agent
> on *surviving* node(s) that monitors and acknowledges this process this
> resulted in data corruption.

If your syncs take that long, pay an extra nickel and buy a disk shelf 
with dual-ported sas drives and a pair of ssds for the log device. 
Otherwise what you're looking at is effectively downtime during the 
failover, and having "quite a lot" of it kinda defeats the purpose I 
should think.


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