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 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