On Wed, Mar 25, 2009 at 03:21:28PM +0100, Alexander Leidinger wrote: > Quoting Mark Powell <M.S.Powell_at_salford.ac.uk> (from Wed, 25 Mar 2009 > 13:49:07 +0000 (GMT)): > > >On Wed, 25 Mar 2009, Alexander Leidinger wrote: > > >>NCQ is not supported yet in FreeBSD. Alexander Motin said he is > >>interested in implementing it, but I don't know about the status of > >>this. > > > >Ok. So vfs.zfs.vdev.max_pending is irrelevant for SATA currently? > > Cheers. > > Either that or it needs to be lowered. I don't know. I wouldn't be surprised if the problem is in the drive firmware. Preread and wc both have the potential to put a lot load to the drives and can trigger bugs that otherwise wouldn't matter. I also have a system running WD drives and ECC RAM which show CRC errors from time to time, while all other systems have no CRC problem at all. -- B.Walter <bernd_at_bwct.de> http://www.bwct.de Modbus/TCP Ethernet I/O Baugruppen, ARM basierte FreeBSD Rechner uvm.Received on Wed Mar 25 2009 - 14:30:02 UTC
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