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On Sun, Sep 3, 2017 at 2:11 PM, Grant <emailgrant@×××××.com> wrote: |
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>>> My new laptop uses /dev/nvme0n1 instead of /dev/sda which conflicts |
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>>> with the script I use to manage about 12 similar laptops running |
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>>> Gentoo. Is there a udev method for renaming the disk that will work |
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>>> well with any USB disks that happen to also be attached? |
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>> |
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>> I'm not certain what you mean by that, but I would guess that you want |
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>> the nvme disk to show up as /dev/sda, and the USB disk(s) to show up |
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>> as /dev/sd[b-z]. |
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>> |
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>> It is not possible to accomplish this using udev; the kernel owns the |
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>> /dev/sdX device namespace, and will sequentially create devices nodes |
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>> for SCSI-like block devices using that namespace. There is no way to |
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>> change that using a udev rule. |
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> |
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> |
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> Can I rename /dev/sda to /dev/sd[b-z] if it's attached via USB, and |
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> then rename /dev/nvme0n1 to /dev/sda if /dev/nvme0n1 exists? |
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> |
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> Alternatively, can I rename /dev/sda to /dev/sd[b-z] if /dev/sda and |
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> /dev/nvme0n1 exist, and then rename /dev/nvme0n1 to /dev/sda if |
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> /dev/nvme0n1 exists? |
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|
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You might technically be able to do it, but I would guess it would |
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cause some nasty race conditions between the kernel and udev. It's a |
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bad idea. |
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