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On Wed, Aug 1, 2012 at 6:34 PM, Alex Schuster <wonko@×××××××××.org> wrote: |
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> Hi there! |
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> |
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> I do not understand the numbering of my hard drives. There may be some |
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> inherent logic, but whenever I make some changes, like replacing drives, |
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> or changing BIOS settings, the order changes. Maybe it's even more random. |
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> |
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> So I made some udev rules like this, and my drives are called /dev/hd1, |
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> hd2 and hd3: |
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> |
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> SUBSYSTEMS=="scsi", KERNEL=="sd?", ATTRS{model}=="SAMSUNG HD154UI", |
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> SYMLINK="hd1" |
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> |
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> This works fine, and this way I can address them in scripts, smartd and |
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> hdparm config files and such. But now I have two identical drives. I had |
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> this before with the drive above, but while being identical models, the |
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> two drives differed a little in size, so I just had to add ATTR{size}. |
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> This does not help with my current drives, and I find nothing |
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> in /sys/block/sd?/device/ that differs. Could there be another way to |
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> distinguish the drives, like looking at the partition scheme or something? |
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|
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If you want to distinguish partitions, I would recommend using labels |
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(in fstab too); those never change unless you specifically change |
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them. Then, no matter how you put them in your machine, they will get |
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mounted correctly, and then you don't need to fuzz with udev rules. |
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Also, as a superficial bonus, they get mounted using the label and it |
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looks nice in your file browser. |
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|
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The drives themselves I see no reason to recognize them, why do you |
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need to do that? |
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|
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Regards. |
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-- |
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Canek Peláez Valdés |
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Posgrado en Ciencia e Ingeniería de la Computación |
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Universidad Nacional Autónoma de México |
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