Date: Sun, 6 Feb 2011 20:55:01 -0800 From: Jeremy Chadwick <freebsd@jdc.parodius.com> To: Greg Bonett <greg@bonett.org> Cc: freebsd-stable <freebsd-stable@freebsd.org> Subject: Re: 8.1 amd64 lockup (maybe zfs or disk related) Message-ID: <20110207045501.GA15568@icarus.home.lan> In-Reply-To: <1297026074.23922.8.camel@ubuntu> References: <1297026074.23922.8.camel@ubuntu>
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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 jdc@parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP 4BD6C0CB |
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