/boot ext4 200MB
/ ext4 5000MB
/home btrfs 5000MB
swap swap 537MB
First boot, Sun Oct 22 19:36:46 MDT 2017
Filesystem Size Used Avail Use% Mounted on
udev 477M 0 477M 0% /dev
tmpfs 100M 3.2M 97M 4% /run
/dev/sda2 4.5G 1.4G 2.9G 33% /
tmpfs 497M 0 497M 0% /dev/shm
tmpfs 5.0M 0 5.0M 0% /run/lock
tmpfs 497M 0 497M 0% /sys/fs/cgroup
/dev/sda3 4.7G 17M 4.2G 1% /home
/dev/sda1 180M 57M 111M 34% /boot
tmpfs 100M 0 100M 0% /run/user/1000
I installed tools for doing automatic backups with btrfs https://github.com/digint/btrbk
sudo apt install btrbk
I created a configuration file using their 'local time-machine' example as a guide.
ryan@ubuntu:~$ cat /etc/btrbk/btrbk.conf
transaction_log /var/log/btrbk.log
snapshot_dir _btrbk_snap
timestamp_format long
snapshot_preserve_daily 30
snapshot_preserve_weekly 0
snapshot_preserve_monthly 0
volume /mnt/btr_pool
snapshot_dir btrbk_snapshots
subvolume @home
I had to mount the btrfs main volume under /mnt/btr_pool to the fstab:
ryan@ubuntu:~$ cat /etc/fstab
# /etc/fstab: static file system information.
#
# Use 'blkid' to print the universally unique identifier for a
# device; this may be used with UUID= as a more robust way to name devices
# that works even if disks are added and removed. See fstab(5).
#
#
# / was on /dev/sda2 during installation
UUID=6ae1fc17-428e-4446-941c-f478c71b9cfd / ext4 errors=remount-ro 0 1
# /boot was on /dev/sda1 during installation
UUID=683a6648-1598-44d3-930e-62aba3b8a4a5 /boot ext4 defaults 0 2
# /home was on /dev/sda3 during installation
UUID=50e15cf1-f4d8-4ac3-9116-dfea86eb7c33 /home btrfs defaults,subvol=@home 0 2
# swap was on /dev/sda4 during installation
UUID=ace0597d-3b9f-45ca-bab2-9a49ff6dbe51 none swap sw 0 0
# mount btrfs for backup
UUID=50e15cf1-f4d8-4ac3-9116-dfea86eb7c33 /mnt/btr_pool btrfs defaults,subvolid=0 0 0
/etc/cron.daily/btrbk:
#!/bin/sh
exec /usr/sbin/btrbk -q -c /etc/btrbk/btrbk.conf run
After creating some directories, the backups appear as:
ryan@ubuntu:~$ ls /mnt/btr_pool/btrbk_snapshots/
@home.20171022T2149 @home.20171022T2216 @home.20171022T2223
@home.20171022T2151 @home.20171022T2216_1 @home.20171022T2229
@home.20171022T2152 @home.20171022T2216_2 @home.20171022T2231
I had to change the VirtualBox network adapter type and install openssh in order to get my notes off of the VM http://wiredrevolution.com/virtualbox/setup-ssh-access-between-virtualbox-host-and-guest-vms
It might be a good idea to start using git in the /etc directory to keep track of changes. More info: https://unix.stackexchange.com/a/72764
I should try this again, but combining the / and /home partitions into one btrfs partition so that things like /etc and /var can also be tracked.
