On Wed, Mar 25, 2009 at 06:04:08PM +0000, Mark Powell wrote: > On Wed, 25 Mar 2009, Bernd Walter wrote: > > >On Wed, Mar 25, 2009 at 03:21:28PM +0100, Alexander Leidinger wrote: > >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've emailed WD support for more info. Not expecting much though. > From reading other threads on these Green Power drives them seem rather > crap. This is my model and firmware: > > http://www.datacent.com/datarecovery/hdd/western_digital/WD10EADS-00L5B1 > > There's some head park problem too, but with 5s ZFS sync I don't think it > applies in this case: > > http://www.silentpcreview.com/forums/viewtopic.php?t=51401&postdays=0&postorder=asc&start=120&sid=a1caf68d80ef8fecc5d9e86defde4c19 > http://kerneltrap.org/mailarchive/linux-kernel/2008/4/9/1386304 > > >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. > > Interesting. Are those CRC problems with WC on or off? WC is on, prefetch is off, but only because it had bad performance with MySQL. Drives are <WDC WD3200AAKS-00SBA0/12.01B01> Serial ATA II I don't know if it is with the drives, but other reasons are less likely in my opinion. The system is located in a data center and since I only get a few errors I decided to live with it and not to debug it further. -- 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 - 17:38:44 UTC
This archive was generated by hypermail 2.4.0 : Wed May 19 2021 - 11:39:44 UTC