Quick & Easy: Setting up ZFS raidz on Ubuntu
Simple guide to ZFS
Install zfs
sudo apt install zfs-dkms zfs-zed zfsutils-linux
Locate the drives you want into your array
sudo ls /dev/disk/by-id | grep "ata"
Create a raidz1 (similar to raid5) pool with data as the name of the pool
sudo zpool create data raidz1 device1 device2 device3 device4
check pool status
sudo zpool status
verify the pool with scrub
sudo zpool scrub data
sudo zpool scrub -s data (cancel a scrub)
add weekly scrub task to crontab
sudo crontab -l | { cat; echo "@weekly zpool scrub data"; } | crontab -
add scrub task on reboot to crontab
sudo crontab -l | { cat; echo "@reboot sleep 25 && zpool scrub data"; } | crontab -
replace failed drive
sudo ls /dev/disk/by-id/ | grep "ata"sudo zpool replace old-disk new-disksudo watch -n1 zpool status
Tweaks to improve Samba & small files access
zfs set xattr=sa data- http://www.nerdblog.com/2013/10/zfs-xattr-tuning-on-linux.html
zfs set atime=off data- https://www.unixtutorial.org/zfs-performance-basics-disable-atime/
destroy the pool (REMOVES DATA!)
sudo zpool destroy data (removes data!)
More Resources
- Checking ashift on existing pools – charsiurice (wordpress.com)
- https://blog.khmersite.net/2013/09/changing-zfs-pool-to-use-disk-id-instead-of-disk-assignment/
- https://www.unixtutorial.org/getting-started-with-zfs-ubuntu-20-04/
- https://thesmarthomejourney.com/2022/02/07/zfs-alert-via-pushover/
- https://docs.oracle.com/cd/E36784_01/html/E36835/gbctx.html
- https://news.ycombinator.com/item?id=23455772
Samba
