What is ZFS?

snapshots

copy-on-write cloning

continuous integrity checking against data corruption

automatic repair

efficient data compression.

What does "support" mean?

You'll find zfs.ko automatically built and installed on your Ubuntu systems. No more DKMS-built modules!

$ locate zfs.ko /lib/modules/4.4.0-4-generic/kernel/zfs/zfs/zfs.ko

You'll see the module loaded automatically if you use it.

$ lsmod | grep zfs zfs 2801664 11 zunicode 331776 1 zfs zcommon 57344 1 zfs znvpair 90112 2 zfs,zcommon spl 102400 3 zfs,zcommon,znvpair zavl 16384 1 zfs

The user space zfsutils-linux package will be included in Ubuntu Main, with security updates provided by Canonical (as soon as this MIR is completed).

package will be included in Ubuntu Main, with security updates provided by Canonical (as soon as this MIR is completed). As always, industry leading, enterprise class technical support is available from Canonical with Ubuntu Advantage services.

How do I get started?

$ head -n1 /etc/issue Ubuntu Xenial Xerus (development branch)

\l

$ sudo apt install lxd zfsutils-linux

$ sudo lxd init Name of the storage backend to use (dir or zfs): zfs Create a new ZFS pool (yes/no)? yes Name of the new ZFS pool: lxd Would you like to use an existing block device (yes/no)? no Size in GB of the new loop device (1GB minimum): 2 Would you like LXD to be available over the network (yes/no)? no LXD has been successfully configured.

$ sudo zpool list NAME SIZE ALLOC FREE EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT lxd 1.98G 450K 1.98G - 0% 0% 1.00x ONLINE -

$ sudo zpool status pool: lxd state: ONLINE scan: none requested config: NAME STATE READ WRITE CKSUM lxd ONLINE 0 0 0 /var/lib/lxd/zfs.img ONLINE 0 0 0 errors: No known data errors

$ lxc config get storage.zfs_pool_name storage.zfs_pool_name: lxd

$ newgrp lxd $ lxd-images import ubuntu --alias ubuntu Downloading the GPG key for http://cloud-images.ubuntu.com Progress: 48 % Validating the GPG signature of /tmp/tmpa71cw5wl/download.json.asc Downloading the image. Image manifest: http://cloud-images.ubuntu.com/server/releases/trusty/release-20160201/ubuntu-14.04-server-cloudimg-amd64.manifest Image imported as: 54c8caac1f61901ed86c68f24af5f5d3672bdc62c71d04f06df3a59e95684473 Setup alias: ubuntu

$ for i in $(seq 1 5); do lxc launch ubuntu; done ... $ lxc list +-------------------------+---------+-------------------+------+-----------+-----------+ | NAME | STATE | IPV4 | IPV6 | EPHEMERAL | SNAPSHOTS | +-------------------------+---------+-------------------+------+-----------+-----------+ | discordant-loria | RUNNING | 10.0.3.130 (eth0) | | NO | 0 | +-------------------------+---------+-------------------+------+-----------+-----------+ | fictive-noble | RUNNING | 10.0.3.91 (eth0) | | NO | 0 | +-------------------------+---------+-------------------+------+-----------+-----------+ | interprotoplasmic-essie | RUNNING | 10.0.3.242 (eth0) | | NO | 0 | +-------------------------+---------+-------------------+------+-----------+-----------+ | nondamaging-cain | RUNNING | 10.0.3.9 (eth0) | | NO | 0 | +-------------------------+---------+-------------------+------+-----------+-----------+ | untreasurable-efrain | RUNNING | 10.0.3.89 (eth0) | | NO | 0 | +-------------------------+---------+-------------------+------+-----------+-----------+

Ubuntu 16.04 LTS (Xenial) is only a few short weeks away , and with it comes one of the most exciting new features Linux has seen in a very long time...ZFS is a combination of a volume manager (like LVM) and a filesystem (like ext4, xfs, or btrfs).ZFS one of the most beloved features of Solaris, universally coveted by every Linux sysadmin with a Solaris background. To our delight, we're happy to make to OpenZFS available on every Ubuntu system. Ubuntu's reference guide for ZFS can be found here , and these are a few of the killer features:These features truly make ZFS the perfect filesystem for containers.It's really quite simple! Here's a few commands to get you up and running with ZFS and LXD in 60 seconds or less.First, make sure you're running Ubuntu 16.04 (Xenial).Now, let's install lxd and zfsutils-linux, if you haven't already:Next, let's use the interactive lxd init command to setup LXD and ZFS. In the example below, I'm simply using a sparse, loopback file for the ZFS pool. For best results (and what I use on my laptop and production servers), it's best to use a raw SSD partition or device.We can check our ZFS pool now:Finally, let's import the Ubuntu LXD image, and launch a few containers. Note how fast containers launch, which is enabled by the ZFS cloning and copy-on-write features:Super easy, right?Cheers,:-Dustin