On Sun, Feb 06, 2011 at 01:01:14PM -0800, Greg Bonett wrote: > Hi all, > I am experiencing hard lockup when running 8.1-RELEASE amd64. The last > two times it has happened I was running a zpool scrub (high cpu and io > load). /var/log/messages has some errors looking like: > kernel: ad0: FAILURE - READ_DMA4 > > but these didn't seem to correspond to the exact time of the lockup. > > any suggestions?
Given that you're running 8.1-RELEASE, what sort of ZFS tunings are you using in /boot/loader.conf? Tuning is required on this version. The ad0 READ_DMA48 errors could indicate you have a hard disk with bad blocks or is going bad in a different manner. Please install ports/sysutils/smartmontools and provide output of "smartctl -a /dev/ad0" here and I can help you determine that. -- | Jeremy Chadwick j...@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB | _______________________________________________ freebsd-stable@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-stable To unsubscribe, send any mail to "freebsd-stable-unsubscr...@freebsd.org"
