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  • Re: make up as you go along?

    From Bob Eager@21:1/5 to David Chmelik on Wed Jan 3 10:53:13 2024
    On Wed, 03 Jan 2024 02:18:45 +0000, David Chmelik wrote:

    We bought new laptop (kept old including spare/slower, and interesting/ slowest with LibreBoot)... after installing/upgrading FreeBSD more times
    on these, noticed something weird.
    Fdisk was replaced by gpart... however uses different SSD/M2/NVMe
    names than fstab--if one tries 'gpart show <device>' for device name
    (without partition/slice) in fstab, gpart won't show (one does I haven't found how to show extended partitions, though can mount).
    Is fact of not having same device names ahead of time in
    design/plan/
    standard, and the switch to git, evidence of switch to 'make up as you
    go along' computer programming method used such as in GNU/Linux? It's
    also known as waterfall versus agile software engineering methods or
    'The Cathedral And The Bazaar'. I depended on UNIX/*BSD decades to be
    more stable/clean including more understandable than much else, but (as
    in case above, it's becoming less understandable so) maybe this is
    slowly ending?

    These changes happened long ago (years). Do keep up.

    Look in /dev to see the names. But I bet it was in release notes long ago.



    --
    Using UNIX since v6 (1975)...

    Use the BIG mirror service in the UK:
    http://www.mirrorservice.org

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  • From Philip Paeps@21:1/5 to David Chmelik on Mon Jan 8 11:18:25 2024
    David Chmelik <dchmelik@gmail.com> wrote:
    Fdisk was replaced by gpart...

    fdisk is still installed on FreeBSD as of 14.0, and still works within
    the limited scope of what it has always supported. gpart is a more
    modern (and flexible) implementation with support for more partitioning
    schemes found on contemporary computers. gpart is hardly new. It has
    been around since FreeBSD 7.0 (2008).

    however uses different SSD/M2/NVMe names than fstab--if one tries
    'gpart show <device>' for device name (without partition/slice) in
    fstab, gpart won't show (one does I haven't found how to show extended >partitions, though can mount).

    FreeBSD releases since 12.0 (2018) include a new direct access driver
    for NVMe devices: nda(4). FreeBSD 14.0 (2023) made this the default,
    though the nvd(4) driver still exists if you need it.

    Is fact of not having same device names ahead of time in design/plan/ >standard

    By default, the nda(4) driver creates aliases in /dev. This helps most
    legacy configurations get over the upgrade. If your use case is
    sufficiently exotic to need the legacy nda(4) driver for some reason,
    you can set the hw.nvme.use_nvd loader tunable.

    This is clearly mentioned in the 14.0-RELEASE announcement:

    NVMe disks are now nda devices by default, for example nda0; see
    nda(4). Symbolic links for the previous nvd(4) device names are
    created in /dev. However, configuration such as fstab(5) should be
    updated to refer to the new device names. Options to control the use
    of nda devices and symbolic links are described in nda(4).
    bdc81eeda05d (Sponsored by Netflix)

    Philip

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