Timeshift says “partition has unsupported subvolume layout” when trying to create a snapshot. Using btrfs (very little knowledge).
My fstab:
# /dev/sdb5 UUID=fd732c09-058c-41d2-82c1-b0e2e4c0d342
PARTUUID=46e29daa-c52d-40f2-a62a-24f5c5ab1c4b / btrfs rw,noatime,compress=lzo,ssd,space_cache,commit=120,subvol=@ 0 0
# /dev/sdb1 UUID=2EF4-A8DD LABEL=SYSTEM
PARTUUID=7f946b0a-9f68-42e5-b022-7462ff5eb7a6 /boot/efi vfat rw,relatime,fmask=0022,dmask=0022,codepage=437,iocharset=iso8859-1,shortname=mixed,utf8,errors=remount-ro 0 0
# /dev/sdb5 UUID=fd732c09-058c-41d2-82c1-b0e2e4c0d342
PARTUUID=46e29daa-c52d-40f2-a62a-24f5c5ab1c4b /home btrfs rw,noatime,compress=lzo,ssd,space_cache,commit=120,subvol=@home 0 0
# /dev/sdb6 UUID=38325dd2-f99f-4f59-90dc-91bf865cbadd
PARTUUID=d5fa2f79-b37f-4c81-91ae-53e53708d918 none swap defaults,pri=-2 0 0