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Re: [dm-devel] further testing w/ multipath ... and bugs



On lun, 2005-06-13 at 14:36 -0500, Mike Christie wrote:
> Christophe Varoqui wrote:
> > 
> >  rport-0:0-0: blocked FC remote port time out: removing target
> >  rport-0:0-1: blocked FC remote port time out: removing target
> 
> I think if we end up doing this to all the devices paths we are going to 
> be screwed. If all the paths suddenly fail and then those devices are 
> freed when trying to readd/create devices when the ports come back is 
> going to take a lot of GFP_KERNELs.

Right.

One thing I don't understand in the current scheme is why io are not
rerouted by the DM multipath target between the LOOP_DOWN and the rport
target removal ...

If io could get rerouted within a few seconds, we could set a target
removal multi-minutes timer, which should cover most reasonable SAN
failure scenarii.

Regards,
-- 
christophe varoqui <christophe varoqui free fr>



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