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On Sun, Apr 18, 2010 at 4:10 PM, Mark Knecht <markknecht@×××××.com> wrote: |
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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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> |
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|
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It seems that this possibly doesn't APM... |
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|
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gandalf linux # hdparm -i /dev/sda |
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|
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/dev/sda: |
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|
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Model=WDC WD10EARS-00Y5B1, FwRev=80.00A80, SerialNo=WD-WCAV55464493 |
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Config={ HardSect NotMFM HdSw>15uSec SpinMotCtl Fixed DTR>5Mbs FmtGapReq } |
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RawCHS=16383/16/63, TrkSize=0, SectSize=0, ECCbytes=50 |
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BuffType=unknown, BuffSize=unknown, MaxMultSect=16, MultSect=16 |
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CurCHS=16383/16/63, CurSects=16514064, LBA=yes, LBAsects=1953525168 |
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IORDY=on/off, tPIO={min:120,w/IORDY:120}, tDMA={min:120,rec:120} |
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PIO modes: pio0 pio3 pio4 |
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DMA modes: mdma0 mdma1 mdma2 |
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UDMA modes: udma0 udma1 udma2 udma3 udma4 udma5 *udma6 |
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AdvancedPM=no WriteCache=enabled |
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Drive conforms to: Unspecified: ATA/ATAPI-1,2,3,4,5,6,7 |
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|
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* signifies the current active mode |
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|
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gandalf linux # |
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