Why? root filesystem turned read-only during zypper dup

[linuxero]

This happened to me when I’ve changed my fstab config’s btrfs options. then I’d rollbacked to untouched fstab snapshot to rid off this annoying issue.

snapper rollback works only with --ambit classic option

I think found the reason, when I edit /etc/fstab by adding :2 value for space_cache and reboot makes somehow my snaphots are being read-only. UUID=eeffc873-1c1f-47a4-a8a6-b83511ba1a8e / btrfs defaults,noatime,compress=zstd:3,space_cache:2,autodefrag,discard=async,commit=120 0 0 I’ve tried this case 5 times and at the end of editing process this occurred. what’s wrong with editing fstab? this is an example and subvolume options so not sure which…

can you check/compare snapshots for your some system configs especially fstab?