No, it's supposed to be like that. /gnu/store is mounted read-only (on the guix system) to prevent you from writing to it. The guix daemon has write access to the store when it wants to add a new item, or garbage collect.

Le 31 août 2020 07:11:13 GMT-04:00, Giovanni Biscuolo <g@xelera.eu> a écrit :
>Hello Raghav
>
>when forwarding the output of commands next time, plz beware your MUS
>does not reformat the relevant :-)
>
>This seems as a system issue on your side, not a Guix bug
>
>Raghav Gururajan <raghavgururajan@disroot.org> writes:
>
>>> It seems connected to a filesystem issue: can you also tell us
>what's
>>> the output of "mount"?
>
>[...]
>
>> w on / type btrfs
>> (rw,relatime,ssd,space_cache,subvolid=5,subvol=/)
>
>[...]
>
>> /dev/mapper/secondary on /gnu/store type btrfs
>> (ro,relatime,ssd,space_cache,subvolid=5,subvol=/)
>
>I see two problems here:
>
>1. the btrfs volume /dev/mapper/secondary seems mounted twice, and with
>the same subvolume; I never tryed to mount the same btrfs volume on two
>different mountpoints: is this the reason your /gnu/store is read-only?
>
>2. /gnu/store is mounted read-only, that's why you get the errors
>
>Please can you try removing the mounting of /gnu/store from your
>filesystem configuration (or fstab if on a foreign distro)? 
>
>[...]
>
>HTH! Gio'
>
>-- 
>Giovanni Biscuolo
>
>Xelera IT Infrastructures