[dm-devel] Making failover work quickly with QLogic HBAs

[Arthur Bergman]

On 21 Apr 2005, at 14:48, Lars Marowsky-Bree wrote:

> On 2005-04-21T14:21:25, Arthur Bergman <sky at nanisky.com> wrote:
>
>> There has been discussions that this is not supported behaviour and
>> could cause problems, in particular the supported configurations of 
>> big
>> blue for their SDD multipath product states that you shouldn't do
>> this...
>
> This is about DM multipath, not about SDD multipath, so I couldn't care
> less about what big blue supports there ;-)
>

I have heard the same from all the different vendors...


> But seriously, can you point me at those discussions? Are there any 
> real
> problems caused by this beyond the depreciated sdd multipath...? It
> seems to help quite a bit for me; w/o, failover times are inacceptable.
>
>

It does help for us too, however most recently i saw this discussed on 
the dm-devel list... Search for qlogic.

https://www.redhat.com/archives/dm-devel/2005-February/msg00084.html

Cheers
Arthur


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