idle HD spin down standby/sleep, laptop mode?? (seagate 7200.7)

Rick Stevens rstevens at vitalstream.com
Thu Jan 22 01:48:31 UTC 2004


Kevin Bowen wrote:
> I'm trying to get fedora to spin down my primary drive when idle, but I
> can't seem to get it to go into standby mode. When I use hdparm to put it
> into 'sleep' mode, it does sleep very briefly, waking up after a few
> seconds. When I use standby mode (either forced or with an -S idle time
> auto-standby) it doesn't seem to ever enter standby at all. I'm not exactly
> clear on how the new "laptop mode" works into this, but I have tried it both
> with and without this mode enabled (including running the laptop-mode.sh
> script) with no apparent change in behavior.
> 
> My drive is a serial ATA seagate 7200.7, running on a SATA raid card (not
> using any raid features) - might this be the source of the problem? 

The system constantly flushes dirty cache buffers to the disk so it
never has a chance to spin down.  A google search for "noflushd" should
reveal a daemon that covers this issue that you can install.
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- Rick Stevens, Senior Systems Engineer     rstevens at vitalstream.com -
- VitalStream, Inc.                       http://www.vitalstream.com -
-                                                                    -
-    Reality: A crutch for those who can't handle science fiction    -
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