# Storage & Backups (out-of-date)

### Setup ZFS Scrub (Data Integrity)

Automate [ZFS scrubbing](https://wiki.archlinux.org/index.php/ZFS#Scrubbing) so the data integrity on disks is actively monitored, repaired if necessary, and I'm alerted if there is a problem with my disks.

#### Create systemd Service/Timer ([source](https://github.com/lnicola/systemd-zpool-scrub))

Create a simple systemd servcie template for scrubbing ZFS pools.

```diff
# /etc/systemd/system/zpool-scrub@.service
+ [Unit]
+ Description=Scrub ZFS Pool
+ Requires=zfs.target
+ After=zfs.target
+
+ [Service]
+ Type=oneshot
+ ExecStartPre=-/usr/sbin/zpool scrub -s %I
+ ExecStart=/usr/sbin/zpool scrub %I
```

Then create a systemd timer template for periodically running that service. I am running the scrub weekly, but semi-monthly or monthly would almost certainly be ok too.

```diff
# /etc/systemd/system/zpool-scrub@.timer
+ [Unit]
+ Description=Scrub ZFS pool weekly
+
+ [Timer]
+ OnCalendar=weekly
+ Persistent=true
+
+ [Install]
+ WantedBy=timers.target
```

#### Enable ZFS Scrub

```bash
systemctl daemon-reload
systemctl enable --now zpool-scrub@rpool.timer
```

### Setup Sanoid/Syncoid (Data Backup)

Run [Sanoid](https://github.com/jimsalterjrs/sanoid) for automating snapshots and Syncoid for remote backups. Unfortunately this isn't available in repositories so you have to build it yourself. However the author makes it fairly simple.

#### Install ([source](https://github.com/jimsalterjrs/sanoid))

```bash
apt-get install build-essential debhelper dpkg-buildpackage libcapture-tiny-perl libconfig-inifiles-perl pv lzop mbuffer
sudo git clone https://github.com/jimsalterjrs/sanoid.git
cd sanoid
ln -s packages/debian .
dpkg-buildpackage -uc -us
apt install ../sanoid_*_all.deb
```

#### Configure Sanoid

I want to take hourly snapshots of both of my ZFS pools because sometimes I am not as careful or thoughtful as I should be about what I am doing at any given moment.

```diff
# /etc/sanoid/sanoid.conf
+ [template_proxmox]
+         frequently = 0
+         hourly = 24
+         daily = 7
+         weekly = 4
+         monthly = 1
+         yearly = 0
+         autosnap = yes
+         autoprune = yes
+ 
+ [rpool]
+         use_template = template_proxmox
+         process_children_only = yes
+         recursive = yes
+ 
+ [rpool/ROOT]
+         use_template = rpool           
+         process_children_only = yes
+         recursive = yes
+ 
+ [rpool/data]
+         use_template = template_proxmox
+         weekly = 1
+         monthly = 1
+         process_children_only = yes
+         recursive = yes
```

Maybe this is a sin, but I'd like my snapshots to be in local time so I don't have to do the (admittedly simple) conversion in my head.

```diff
# /usr/lib/systemd/system/sanoid.service
  [Service]
- Environment=TZ=UTC
+ Environment=TZ=EST
```

#### Configure Syncoid

I haven't decided where I want to replicate to yet so I haven't configured syncoid yet.