Hi Jussi.
Are you still seeing the links going up and down? The present
default DM-MPIO policy for the Symmetrix is to fail immediately. If
you're having link issues then you'll continue to bounce back and forth
between paths and this will affect the performance.
You've stated that the performance was degraded when DM-MPIO is
used. Was the performance better without the use of DM-MPIO and the
setting of the D bit on the FA?
Regards,
Wayne.
-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Jussi Silvennoinen
Sent: Wednesday, May 30, 2007 6:31 AM
To: [email protected]
Subject: [rhelv5-list] Re: rhel5 + qlogic + DMX3 (Was: nothing)
> Jussi,
>
> Sounds like a simple configuration issue.
>
> Try checking that the D bit has been set on the FA per the EMC Host
> Connectivity Guide for Linux on PowerLink:
>
>
https://powerlink.emc.com/nsepn/webapps/btg548664833igtcuup4826/km/live1
/en_US/Offering_Technical/Technical_Documentation/300-003-865_a04_elccnt
_0.pdf?mtcs=ZXZlbnRUeXBlPUttQ2xpY2tDb250ZW50RXZlbnQsZG9jdW1lbnRJZD0wOTAx
NDA2NjgwMjU3MzhhLG5hdmVOb2RlPVNvZndhcmVEb3dubG9hZHMtMg__
>
> Regards,
Thanks, got it sorted.
Still a bit puzzled why I'm seeing very slow reads from the array after
I
multipath it.
--
Jussi
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