On Tue, 17 Aug 2010 18:07:18 +0300 Gilboa Davara <gilboad@xxxxxxxxx> wrote: > On Tue, 2010-08-17 at 09:44 -0400, Steve Blackwell wrote: > > I leave my computer on 24/7 so that my backups can run at night. > > Lately, it has been crashing during the night usually leaving no > > trace of what happened. Last night it crashed but left this > > in /var/log/messages: > > > > Aug 17 01:04:56 steve kernel: INFO: task kjournald:1960 blocked for > > more than 120 seconds. Aug 17 01:04:56 steve kernel: "echo 0 > > > /proc/sys/kernel/hung_task_timeout_secs" disables this message. > > > Could a hard drive get shut down because it was getting too hot? > > > What would be a normal temp for a hard drive that has just > > > completed a backup? 124C seems really hot. The HD cooling fan had > > > been broken so I replaced it this past weekend but it doesn't > > > seem to have helped. Too late? Permanent HD damage already done? > > Any other comments or suggestions? > > Hello Steve, > > This is not a crash. > The kjournald kernel process (which handles various file-system task). > You assumption that the HD went into some type of sleep/suspend mode > during write sounds reasonable to me. My machine locked up again yesterday evening and my inner Grissom had been nagging me all day. Something just didn't make sense. If it was a temperature problem, then why did it always happen after long periods of inactivity and usually at night when the temperatures should be at their coolest? I went back and looked at the logs from yesterday. This time I found that the last log written was pm-suspend.log. (Ah-ha!) At the bottom of this log are these lines: ... /usr/lib/pm-utils/sleep.d/98smart-kernel-video suspend suspend: success. /usr/lib/pm-utils/sleep.d/99hd-apm-restore.hook suspend suspend: Advanced Power Management not supported by device sdc. Advanced Power Management not supported by device sda. Advanced Power Management not supported by device sdb. success. /usr/lib/pm-utils/sleep.d/99video suspend suspend: kernel.acpi_video_flags = 0 success. Tue Aug 17 21:42:23 EDT 2010: performing suspend I found that I have 2 screensavers enabled, an X screensaver and a GNOME screensaver. One of them had power management enabled and set to suspend after 2 hrs of inactivity. I disabled the X screensaver and disabled power management. Last night the machine ran all night with no problems. It looks like the power management was able to put the disks to sleep but not wake them up because power management is not supported by the disks. This problems started a few weeks ago so I suspect an update of screensaver on Aug 6 started the problem. So nothing to do with overheating but I am learning more about smartd. Steve. -- Changing lives one card at a time http://www.send1cardnow.com
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