On Fri, Apr 15, 2005 at 10:10:52AM -0400, Bill Vermillion wrote: > On or about Fri, Apr 15, 2005 at 12:01 , while attempting a > Zarathustra emulation [EMAIL PROTECTED] thus spake: > > > > > Message: 4 > > Date: Thu, 14 Apr 2005 10:58:02 -0500 (CDT) > > From: "H. S." <[EMAIL PROTECTED]> > > Subject: imminent disk failure ? > > ... > > > I have a server running 4.X for almost two years now, without > > problems - rock solid as it should be - yesterday the server > > became unresponsive, now that I have access again, and while > > checking the logs, I found this as the last message before the > > unresponsiveness: > > > /kernel: ad0: READ command timeout tag=0 serv=0 - resetting > > > The next message is the system getting back on, 1hour later. > > > I have not changed anything kernel-related on this system for > > a long time (jul 2004), just apply the occasional kernel patch > > and rebuild/reboot the system. I never encountered this problem > > before. Could this message mean this disk is giving its last > > breaths ? > > It might help if we knew a bit more about the system such > a drive make and model - you can see that in dmesg. That may > point out some device that is known to be problematic. > > The last time I got timeout errors like that was in the 3.x era > with a SCSI controller. Last IDE problem I had was a bad read > that force the system into PIO mode with over 75% performance > decrease. The only way around that one that I was aware of was a > reboot.
For any disk within perhaps the last five years you should be able to just use SMART to perform a thorough health test on your hard drives and view their statistics and error logs. I don't know why it doesn't currently do much on SCSI, but ports/sysutils/smartmontools works great for ATA. -- Brian Fundakowski Feldman \'[ FreeBSD ]''''''''''\ <> [EMAIL PROTECTED] \ The Power to Serve! \ Opinions expressed are my own. \,,,,,,,,,,,,,,,,,,,,,,\ _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
