In Fedora, my /etc/fstab looked like this:
> cat /mnt/backups/fedora/etc/fstab
#
# /etc/fstab
# Created by anaconda on Sat Jan 5 20:34:23 2019
#
# Accessible filesystems, by reference, are maintained under '/dev/disk/'.
# See man pages fstab(5), findfs(8), mount(8) and/or blkid(8) for more info.
#
# After editing this file, run 'systemctl daemon-reload' to update systemd
# units generated from this file.
#
**UUID=7761e5db-3acd-43c2-a7ab-1e60026fe5aa / btrfs subvol=root 0 0**
UUID=33166983-6571-4f01-8fac-3bce43a06770 /boot ext4 defaults 1 2
UUID=7C4B-378E /boot/efi vfat umask=0077,shortname=winnt 0 2
UUID=7761e5db-3acd-43c2-a7ab-1e60026fe5aa /home btrfs subvol=home 0 0
UUID=07b5a785-b1df-493e-a63b-5e6b533a0c10 /mnt/backups btrfs discard 0 0
In openSUSE Tumbleweed, it looks like this:
> cat /etc/fstab
**UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c / btrfs defaults 0 0**
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /.snapshots btrfs subvol=/@/.snapshots 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /var btrfs subvol=/@/var 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /usr/local btrfs subvol=/@/usr/local 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /tmp btrfs subvol=/@/tmp 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /srv btrfs subvol=/@/srv 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /root btrfs subvol=/@/root 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /opt btrfs subvol=/@/opt 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /home btrfs subvol=/@/home 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /boot/grub2/x86_64-efi btrfs subvol=/@/boot/grub2/x86_64-efi 0 0
UUID=8e2eab35-ae1a-4e73-85ef-db7bf3142a2c /boot/grub2/i386-pc btrfs subvol=/@/boot/grub2/i386-pc 0 0
UUID=16C3-AD52 /boot/efi vfat utf8 0 2
UUID=07b5a785-b1df-493e-a63b-5e6b533a0c10 /mnt/backups btrfs defaults 0 0
The entry for / was generated by the installer in both cases. Why are the mount options for / different?
Thanks,
Gene