Hi,
I created btrfs directly to disk using such a scheme (no partitions):
dd if=/dev/zero of=/dev/sda bs=4096
mkfs.btrfs -L dev_sda /dev/sda
mount /dev/sda /mnt
cd /mnt
btrfs subvolume create __active
btrfs subvolume create __active/rootvol
btrfs subvolume create __active/usr
btrfs subvolume create __active/home
btrfs subvolume create __active/var
btrfs subvolume create __snapshots
cd /
umount /mnt
mount -o subvol=__active/rootvol /dev/sda /mnt
mkdir /mnt/{usr,home,var}
mount -o subvol=__active/usr /dev/sda /mnt/usr
mount -o subvol=__active/home /dev/sda /mnt/home
mount -o subvol=__active/var /dev/sda /mnt/var
# /etc/fstab
UID=ID / btrfs rw,relative,space_cache,subvol=__active/rootvol 0 0
UUID=ID /usr btrfs rw,relative,space_cache,subvol=__active/usr 0 0
UUID=ID /home btrfs rw,relative,space_cache,subvol=__active/home 0 0
UUID=ID /var btrfs rw,relative,space_cache,subvol=__active/var 0 0
Everything works fine. Is such a solution is recommended? In my
opinion, the creation of the partitions seems to be completely
unnecessary if you can use btrfs.
I will be grateful for your feedback.
Best regards,
Daniel
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