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    SubjectRe: Head parking (was: IBM HDAPS things are looking up)
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    Hi,

    Jens Axboe wrote:

    > ATA7 defines a park maneuvre, I don't know how well supported it is
    > yet though. You can test with this little app, if it says 'head
    > parked' it works. If not, it has just idled the drive.

    Great! Thanks for digging this up - it works on my T42, using a Fujitsu
    MHT2080AH drive:

    lenz@metis:~/work/ibm_hdaps> sudo ./headpark /dev/hda
    head parked

    Judging from the sound the drive makes, this is the same operation that
    the windows tool performs.

    However, the head does not remain parked for a very long time,
    especially if there is a lot of disk activity going on (I tested it by
    running a "find /" in parallel). The head parks, but leaves the park
    position immediately afterwards again. I guess now we need to find a way
    to "nail" the head into the parking position for some time - otherwise
    it may already be on its way back to the platter before the laptop hits
    the ground...

    Thanks again - this is another helpful bit in getting all the pieces
    together.

    Bye,
    LenZ
    - --
    - ------------------------------------------------------------------
    Lenz Grimmer <lenz@grimmer.com> -o)
    [ICQ: 160767607 | Jabber: LenZGr@jabber.org] /\\
    http://www.lenzg.org/ V_V
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