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On Sun, Apr 18, 2010 at 3:19 PM, pk <peterk2@××××××××.se> wrote: |
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> On 2010-04-18 19:43, Mark Knecht wrote: |
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> |
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>>> suspicion is that Linux is doing something that wakes the drive up |
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>>> once every two minutes and then lets the drive go back to sleep. That |
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> |
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> Sounds a bit like: |
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> http://lwn.net/Articles/257426/ |
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> |
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> Although it may be different in your case... |
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> |
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> Best regards |
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> |
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> Peter K |
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|
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Yeah, does sound very similar. A few others have mentioned this in the |
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past but I've not yet discovered what Gentoo or specifically my kernel |
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config might have done to set it off. |
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|
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gandalf linux # date && smartctl -A /dev/sda | grep Load_Cycle_Count |
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Sun Apr 18 16:08:16 PDT 2010 |
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193 Load_Cycle_Count 0x0032 187 187 000 Old_age |
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Always - 41929 |
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gandalf linux # |
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|
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I'd experiment with the hdparm command but it doesn't work. Maybe |
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there's somethign else I need to do first or something: |
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|
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gandalf linux # hdparm -B 254 /dev/sda |
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|
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/dev/sda: |
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setting Advanced Power Management level to 0xfe (254) |
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HDIO_DRIVE_CMD failed: Input/output error |
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HDIO_DRIVE_CMD(identify) failed: Input/output error |
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gandalf linux # |
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|
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hdparm does work though: |
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|
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gandalf linux # hdparm -tT /dev/sda |
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|
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/dev/sda: |
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Timing cached reads: 11552 MB in 2.00 seconds = 5779.10 MB/sec |
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Timing buffered disk reads: 314 MB in 3.00 seconds = 104.50 MB/sec |
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gandalf linux # |
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|
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Thanks, |
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Mark |
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