Messages in this thread | | | Date | Wed, 08 Aug 2007 10:08:57 -0400 | From | Mark Lord <> | Subject | Re: Disk spin down issue on shut down/suspend to disk |
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Tejun Heo wrote: > Michael Sedkowski wrote: >> Dnia 07-08-2007, Wt o godzinie 03:43 +0900, Tejun Heo napisał(a): >>> Does emergency unload count increase >>> after each power down? >> I think I got it. >> Using smartctl I've done a test and shut down, then repeted the test. >> The only values that where diffrent are temperatures and >> Hardware_ECC_Recovered which rised by 6 points. >> However I have no idea which of those is the "emergency count"... >> Full results in attachment. >> >> 192 Power-Off_Retract_Count 0x0032 100 100 000 Old_age Always - 388 > > I think this is the one. You can test it by forcefully powering off the > machine (press power button for several secs or disconnect AC and > battery) and see whether the count increases.
FWIW, Tejun, with 2.6.22, my new Seagate 160GB SATA drive (notebook) increments the "Power-Off_Retract_Count" on each suspend-to-RAM operation. It does not do any double spin-up/spin-down things though.
What a mess.
-ml
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