On 7/13/07, Torrey McMahon <[EMAIL PROTECTED]> wrote:
> ZFS needs to use the top level multipath device or bad things will
> probably happen in a failover or in initial zpool creation. Fopr
> example: You'll try to use the device on two paths and cause a lun
> failover to occur.
>
> Mpxio fixes a lot of these issues. I strongly suggest using mpxio
> instead of powerpath but sometimes its all you can use if the array is
> new and mpxio doesn't have the hooks for it ... yet.

Hm. This is pretty old stuff, and what is irritating is that I had it all
working under mpxio. Then I was told the system had to be reconfigured
to use powerpath, and I've not seen my data since.

(I follow the logic that it's the datacenter standard, although I'm no
longer sure I agree with it based on my experience so far; nor does
my own experience match the alleged technical superiority of
powerpath over mpxio. Ho hum.)

-- 
-Peter Tribble
http://www.petertribble.co.uk/ - http://ptribble.blogspot.com/
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