[arch-general] genfstab, fstab, seclabel, UUID vs. PARTUUID, and Arch Wiki

Eli Schwartz eschwartz93 at gmail.com
Sun Nov 9 01:32:39 UTC 2014

On Thu, Nov 6, 2014 at 12:30 AM, vixsomnis <vixsomnis at fastmail.com> wrote:

> tl;dr - genfstab causes problems on my system, PARTUUIDs may lead to
> non-booting systems when used instead of UUIDs
> I had a problem installing Arch Linux on my box earlier this week,
> although I managed to resolve it. I was installing from the latest
> fedora live usb image, since my motherboard refuses to boot into efi
> mode with the Arch ISOs.
> Weird issues with genfstab:
>     -    When I run with the -U option, no UUIDs are placed in fstab.
>     With the -L option, no labels. Am I correct in thinking that the
>     "/dev/sdX" should be replaced with UUIDs and labels, respectively?
>     -    My first and second attempts both ended up with an fstab option
>     called "seclabel" that I couldn't find any documentation for. The
>     boot process stalled, saying it didn't understand "seclabel" or
>     "seclabel" was missing an option, and kicked me to recovery. After
>     removing "seclabel" that problem no longer occurred. Hopefully it's
>     not too important...
>     -    I had duplicate entries, even running it only once on a clean
>     installation. I started from scratch twice, and duplicated this
>     problem. I cleaned the file up manually, but it was still odd.
>     Possibly related to the fedora live usb. However, no drives were
>     mounted twice and the blkid / lsblk output didn't show any problems.

Seems like Fedora is causing the duplicated mountpoints.

see: https://lists.fedoraproject.org/pipermail/users/2011-August/402738.html
and: https://bugzilla.redhat.com/show_bug.cgi?id=701176

Also the seclabel thing, every reference I find for it has Fedora involved
somewhere. ;)

Someone else who had seclabel (on Arch Linux), same problem:
Fedora was their master OS, possibly they did the same thing you did?
Anyway, they seem to have no problems after deleting it, or at least they
never posted back about it...

> Lastly, I'd like to introduce myself. I'm Christian Demsar. I'm
> currently studying CS at Georgia Tech. I dabbled in linux a bit back in
> high school (only ubuntu and mint -- so not very deeply), but gave up
> until about last summer, and I've been mostly successful in learning the
> basics.
> --
> vixsomnis

Hi. :) I too have dabbled in high school (Ubuntu) and just started learning
the basics last summer, with Archlinux. Going well so far.
And I'm applying for Georgia Tech for next year...

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