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Re: [dm-devel] DM Multipath Plugin



On Wed, May 28, 2003 at 04:45:58PM -0400, Mike Tran wrote:
> Hi,
> 
> Is there any work being done or considered for a DM mulitpath plugin? 
> If yes, is it going to be an open source plugin?
> 
> I think it's quite easy to implement a DM mulitpath plugin with some
> basic functionality, such as load balacing and fail over.

We do have a draft of such a target.  Our main concern with it at the
moment is that the lower level device drivers re-try too much when
there is an error, this can result in it taking as long as 30 seconds
for us to notice that a path has gone down and subsequently failover.
Load balancing does appear to work nicely.  This target will be open
source.

- Joe



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