I have a laptop with 2 drives (one SSD, one SATA). With Qubes 4.1 I used this document to add secondary storage. Secondary storage | Qubes OS I used the 2nd drive for one large VM.
With Qubes 4.2.0 I’m using Btrfs. Any tips on how to add Btrfs secondary storage?
Thanks!
This seems to work, but I’m not sure the btrfs settings are optimal.
sudo cryptsetup luksFormat --hash=sha512 --key-size=512 --cipher=aes-xts-plain64 --verify-passphrase /dev/sdb
sudo blkid /dev/sdb
My device UUID is 8673eb1c-6d9c-486a-a330-830836ebf642
add to /etc/crypttab
luks-8673eb1c-6d9c-486a-a330-830836ebf642 UUID=8673eb1c-6d9c-486a-a330-830836ebf642 none
reboot
sudo mkfs.btrfs -m single /dev/mapper/luks-8673eb1c-6d9c-486a-a330-830836ebf642
sudo btrfs device scan /dev/mapper/luks-8673eb1c-6d9c-486a-a330-830836ebf642
sudo mkdir /var/lib/qubes2
nano /etc/fstab
UUID=“eb1fc028-70b7-40b0-ade6-b3e4357a73dc” /var/lib/qubes2 btrfs defaults 0 0
sudo mount -a
systemctl daemon-reload
sudo qvm-pool --add varlibqubes2 file-reflink -o dir_path=/var/lib/qubes2
qvm-create -P varlibqubes2 --label grey --template debian-12 vmname
Not using this any longer. Performance was at times too slow. Stopped using btrfs with Qubes 4.2.