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bug#40386: guix system init can't find file system by UUID, workaround r
From: |
Ludovic Courtès |
Subject: |
bug#40386: guix system init can't find file system by UUID, workaround results in broken boot |
Date: |
Thu, 02 Apr 2020 13:00:39 +0200 |
User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux) |
Hi,
raingloom <address@hidden> skribis:
> Trying to install Guix System onto an SSD using an UltraBay dock.
> Config is the attached file (with slight variations in the obvious
> places)
>
> `readlink /dev/disk/by-uuid/643a215d-a30e-473b-826e-5c35de29e38f` gives
> me /dev/sdb1
>
> Yet using (uuid "643a215d-a30e-473b-826e-5c35de29e38f") results in:
>
> ```
> sudo -E guix system init --no-bootloader
> Configs/Guix/desktop-parametric.scm /mnt
> :( /home/raingloom/Configs/Guix/desktop-parametric.scm:50:26: error:
> file system with UUID '643a215d-a30e-473b-826e-5c35de29e38f' not found
> ```
>
> Switching the UUID to uppercase as in the example (thankfully) doesn't
> change anything, not even the error message.
>
> I tried using a label, same result.
What file system is on /dev/sdb1?
The code responsible for that is in (gnu build file-systems). It
currently recognizes only some file system types: ISO9660, ext2/3/4,
Btrfs, FAT32, FAT16, and JFS.
Can you try:
sudo guix repl
,use(gnu build file-systems)
(find-partition-by-uuid (uuid "643a215d-a30e-473b-826e-5c35de29e38f"))
?
> I ended up using the /dev/disk/by-uuid and /dev/disk/by-id paths for
> the root file system and the bootloader respectively, and that resulted
> in a succesful system init, but upon trying to boot the SSD with the
> other machine, I got thrown into a rescue shell, because it couldn't
> find the root using that path.
Yes, because /dev/disk is not accessible early on. That’s why the
manual recommends using ‘uuid’ or ‘file-system-label’.
> **(Quick aside: there really should be a guide for using that rescue
> shell. I can get around in a /bin/sh one, but this is nearly unusable.
> At least autocompletion should be supported.)**
Yes, that reminds me someone reported a serious Bournish bug on IRC.
Thanks,
Ludo’.