[ltp] hdparm & spindown time : still having problems

[Paul RIVIER]

Hi,

for a reason I really can't understand, issuing hdparm -S 5 /dev/hda 
will never spin the disk down.
I know that was already discussed here, but not really solve.

This is not a problem of IO on the disk, as I use laptop mode and a 
hdparm -y /dev/hda command will spin it down perfectly and until then 
next IO call.

But once awoken, it will not spin down again by itself ... Or sometime, 
but not in the same "session" ...
Maybe the smart ?

I am afraid I do not understand it's behaviour.

Running ubuntu 5.10 on T42.
Here is hdparm -I /dev/hda, thanks for any help :)

Paul


*****
root@ubuT42:/etc/acpi # hdparm -I /dev/hda

/dev/hda:

ATA device, with non-removable media
        Model Number:       HTS548060M9AT00
        Serial Number:      MRLB02L4HSEMAC
        Firmware Revision:  MGBOA5DA
Standards:
        Used: ATA/ATAPI-6 T13 1410D revision 3a
        Supported: 6 5 4 3
Configuration:
        Logical         max     current
        cylinders       16383   16383
        heads           16      16
        sectors/track   63      63
        --
        CHS current addressable sectors:   16514064
        LBA    user addressable sectors:  117210240
        device size with M = 1024*1024:       57231 MBytes
        device size with M = 1000*1000:       60011 MBytes (60 GB)
Capabilities:
        LBA, IORDY(can be disabled)
        bytes avail on r/w long: 4      Queue depth: 1
        Standby timer values: spec'd by Vendor, no device specific minimum
        R/W multiple sector transfer: Max = 16  Current = 0
        Advanced power management level: 1 (0x1)
        Recommended acoustic management value: 128, current value: 128
        DMA: mdma0 mdma1 mdma2 udma0 udma1 udma2 udma3 udma4 *udma5
             Cycle time: min=120ns recommended=120ns
        PIO: pio0 pio1 pio2 pio3 pio4
             Cycle time: no flow control=240ns  IORDY flow control=120ns
Commands/features:
        Enabled Supported:
           *    NOP cmd
           *    READ BUFFER cmd
           *    WRITE BUFFER cmd
           *    Host Protected Area feature set
           *    Look-ahead
           *    Write cache
           *    Power Management feature set
                Security Mode feature set
           *    SMART feature set
           *    Mandatory FLUSH CACHE command
           *    Device Configuration Overlay feature set
           *    Automatic Acoustic Management feature set
                SET MAX security extension
                Address Offset Reserved Area Boot
           *    SET FEATURES subcommand required to spinup after power up
                Power-Up In Standby feature set
           *    Advanced Power Management feature set
           *    SMART self-test
           *    SMART error logging
Security:
        Master password revision code = 65534
                supported
        not     enabled
        not     locked
                frozen
        not     expired: security count
        not     supported: enhanced erase
        44min for SECURITY ERASE UNIT.
HW reset results:
        CBLID- above Vih
        Device num = 0 determined by the jumper
Checksum: correct