Bob Friesenhahn wrote: > 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 > What would one look for to decide what vdev to place each LUN?
All mine have the same Current Load Balance value: round robin. -Kyle > 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 > _______________________________________________ zfs-discuss mailing list zfs-discuss@opensolaris.org http://mail.opensolaris.org/mailman/listinfo/zfs-discuss
