On Fri, 29 Aug 2008, Bob Friesenhahn wrote:
>
> If you do use the two raidz2 vdevs, then if you pay attention to how
> MPxIO works, you can balance the load across your two fiber channel
> links for best performance.  Each raidz2 vdev can be served (by
> default) by a differente FC link.

As a follow-up, here is a small script which will show how MPxIO is 
creating paths to your devices.  The output of this when all paths and 
devices are healthy may be useful for deciding how to create your 
storage pool since then you can load-balance the I/O:

#!/bin/sh
# Test path access to multipathed devices
devs=`mpathadm list lu | grep /dev/rdsk/`
for dev in $devs
do
   echo "=== $dev ==="
   mpathadm show lu $dev | egrep '(Access State)|(Current Load Balance)'
done

Bob
======================================
Bob Friesenhahn
[EMAIL PROTECTED], http://www.simplesystems.org/users/bfriesen/
GraphicsMagick Maintainer,    http://www.GraphicsMagick.org/

_______________________________________________
zfs-discuss mailing list
zfs-discuss@opensolaris.org
http://mail.opensolaris.org/mailman/listinfo/zfs-discuss

Reply via email to