kd)
tu /etc/fstab <<'EOF'
/dev/mapper/crypt_dev_ata-Samsung_SSD_870_QVO_8TB_S5VUNG0N900656V-part7 /d btrfs nofail,x-systemd.device-timeout=30s,x-systemd.mount-timeout=30s,noatime,compress=zstd,subvol=d 0 0
+/i /d/m none bind,compress=zstd 0 0
EOF
if ! mountpoint /d &>/dev/null; then
sudo mkdir -p /d