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From: "Richard Fish" <bigfish@××××××××××.org> |
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Subject: Re: [gentoo-user] udev.rules: Two "removeable" SATA-hds...how to map to /dev ??? |
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Date: Fri, 4 Aug 2006 02:19:09 -0700 |
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> On 8/3/06, Meino Christian Cramer <Meino.Cramer@×××.de> wrote: |
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> > Hi, |
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> > |
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> > Trying to write some udev rules to map two identical (model wise) |
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> > SATA-harddiscs to different entries in /dev/. got a question mark |
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> > into my head: |
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> |
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> I don't see any obvious way of doing this with udev. I have some |
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> identical USB drives that I use, and I can identify them by serial |
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> number, but this doesn't seem possible for SATA drives. |
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> |
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> Your best bet may be to mount filesystems by label, or use LVM to |
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> accomplish something similar. |
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> |
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> -Richard |
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> -- |
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> gentoo-user@g.o mailing list |
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> |
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Hi Richard ! |
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|
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(if just a moment before a incomplete posting by me has arrived you |
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and/or the list: SORRY! I pressed the wrong button accidentaly....) |
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Is this logically/technically correct, Richard: ? |
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- The BIOS recogizes the "first" disk (grub: hd0) only by the bus it |
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is attached to: A disk connected to "SATA connector 1" will be hd0, |
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and another one connected to "SATA connector 2" will be hd1 |
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- Therefore grub can distinguish the disks and choose the correct one |
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to boot from right from the BIOS settings and the bus ID even all |
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disks attached to the system are physically and model-wise |
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absolutely identical. |
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- So, booting a kernel image from the correct disk will be no |
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problem. |
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- Now...I will label the root of my bootdisk (grub: hd0) with "root" |
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(only as an example...) and pass that as kernelparameter: |
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root="root" |
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- The system will boot and find its root also. |
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In the net it was mentioned that one has to configure the kernel |
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to recognize partition labels...was this an old "featire" or what |
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do I have to configure where? I searched through /proc/config.gz |
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and found nothing appropiate as I found nothing in |
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/usr/src/linux/Documentatio. Any idea ? |
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Is this correct so far ? |
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Leep booting !;) |
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mcc |
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-- |
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gentoo-user@g.o mailing list |
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