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Thread: Identifying harddrives

  1. #1
    Join Date
    Feb 2006
    Ubuntu 10.04 Lucid Lynx

    Lightbulb Identifying harddrives

    I think one of my hard drives is failing (I have one as a home partition and the other as root). dmesg produces messages like:

    [ 9192.552837] ata5.01: status: { DRDY }
    [ 9192.552850] ata5: soft resetting link
    [ 9192.895427] ata5.01: configured for PIO0
    [ 9192.895437] ata5: EH complete
    [ 9197.052591] ata5.01: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x2 frozen
    [ 9197.052600] ata5.01: cmd a0/00:00:00:00:00/00:00:00:00:00/b0 tag 0
    [ 9197.052601]          cdb 1e 00 00 00 00 00 00 00  00 00 00 00 00 00 00 00
    [ 9197.052602]          res 40/00:03:00:00:00/00:00:00:00:00/b0 Emask 0x4 (timeout)
    It isn't really reproducible, it only happens sometimes.

    So my question is, how do i work out what harddrive "ata5" or "ata5.01" is?

  2. #2
    Join Date
    Jan 2007
    $here ? $here : $there
    Ubuntu 8.04 Hardy Heron

    Re: Identifying harddrives

    I'm not sure how to map that dmesg back to a physical device but, you may want to install:

    sudo apt-get install smartmontools
    That will allow you to get at the data that your disk keeps about it's general health with:

    sudo smartctl --all /dev/sda
    Replace /dev/sda with your device names. You'll want to check the man page for smartctl and probably google a bit to understand the data but, that should help in determining if your disks are dieing.
    Don't try to make something "fast" until you are able to quantify "slow".


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