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From: raingloom <raingloom@riseup.net>
To: help-guix@gnu.org
Subject: Re: How do I specify a btrfs subvolume?
Date: Wed, 17 Mar 2021 02:44:25 +0100	[thread overview]
Message-ID: <20210317024425.5b6cb1de@riseup.net> (raw)
In-Reply-To: <CAEEhgEujVPWLyFChEB2hWXk2rkhGcDRCDPN-2eGsvn1hS5H_PQ@mail.gmail.com>

On Sun, 14 Mar 2021 20:33:06 -0500
Nathan Dehnel <ncdehnel@gmail.com> wrote:

> This is extremely confusing:
> https://guix.gnu.org/manual/en/html_node/Btrfs-file-system.html
> 
> I made my best attempt at creating and mounting a subvolume at
> /media/offsite-backup:
> 
>   (file-systems
>     (cons* (file-system
>              (mount-point "/")
>              (device
>                (uuid "b2e0f449-0583-46fd-8c23-ad2e6cd661a1"
>                      'btrfs))
>              (type "btrfs"))
>            (file-system
>              (mount-point "/media/offsite-backup")
>              (device
>                (uuid "b2e0f449-0583-46fd-8c23-ad2e6cd661a1"
>                      'btrfs))
>              (type "btrfs")
>              (options "subvol=offsite-backup,compress=zlib:9"))
> 
> It gives this error:
> 
> building
> /gnu/store/mrs1qbg619qk4n2lv8k377arclgzwqjq-install-bootloader.scm.drv...
> guix system: bootloader successfully installed on '/dev/sda' guix
> system: warning: exception caught while executing 'start' on service
> 'file-system-/media/offsite-backup': In procedure mount: mount
> "/dev/sda2" on "///media/offsite-backup": No such file or directory
> guix system: warning: some services could not be upgraded
> 
> But /media/offsite-backup exists.
> 

I'm looking at
https://wiki.archlinux.org/index.php/Btrfs#Mounting_subvolumes
and it seems like you either need a numberic ID or an absolute path,
not a relative one.
On my machine `findmnt` returns `subvol=/`.


  reply	other threads:[~2021-03-17 17:36 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-15  1:33 How do I specify a btrfs subvolume? Nathan Dehnel
2021-03-17  1:44 ` raingloom [this message]
2021-03-18  2:48   ` Maxim Cournoyer

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