BTRFS mounts read-only

I have a old tower that acts as a NAS with debian 10 server on it. For some reason a btrfs filesystem is mounting read-only. I’ve gone through fstab, smbconfig, and ssh’d in to modify files but it says it’s mounted read-only.

How do i fix this. i googled and chased down a few possibilities but haven’t been able to get it to predominately fix.

Have you checked syslog for btrfs errors?

Check your syslog to see why it is mounted read-only.

A quick-fire chech could be to run mount -o remount,rw /path/to/fs and report on its output, combined with the relevant kernel messages at the time.

I’m not certain that btrfs has a working fsck by now, and you should prepare yourself for having to back up that file system, reformatting it, and restoring it.

mount: /mnt/data: /dev/sde already mounted or mount point busy.

Hmm… I don’t know if this are to any help. In SUSE (and openSUSE) when started from a snapshot the system is started write protected. The command is " snapper rollback " in that distribution and BTRFS.
Regrads