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This article mainly introduces "how to install and use ZFS file system in Ubuntu". In daily operation, I believe many people have doubts about how to install and use ZFS file system in Ubuntu. Xiaobian consulted all kinds of materials and sorted out simple and easy-to-use methods of operation. I hope it will be helpful to answer the doubts of "how to install and use ZFS file system in Ubuntu". Next, please follow the editor to study!

There are many file system types supported and available in the Linux operating system, so why should we try a new file system when these file systems are working properly? In fact, different Linux file system types are not exactly the same, otherwise you wouldn't have to come up with so many kinds. Some of them also have obvious advantages, such as the ZFS file system.

Why choose the ZFS file system

The ZFS file system is great, it's a truly modern file system, and its built-in functionality makes sense for handling data loads.

If you are considering using ZFS for ultra-fast NVMe SSD, it may not be a * choice. It doesn't matter that ZFS is relatively slow, because it is designed to store large amounts of data and remain secure, so many NAS platforms use ZFS as the default (primary) file system.

There is no need to configure traditional RAID arrays when using ZFS. Instead, we can add disk drives to these pools (Pool) at any time by creating ZFS pools. The ZFS pool is used and behaved in almost the same way as RAID, but its functionality is based on the file system.

ZFS can act as an alternative to LVM, allowing us to quickly create and manage partitions without having to deal with lower-level content and worry about the associated risks. At the same time, ZFS is also a CoW file system, which means that ZFS protects your data from corruption over time, and ZFS can create checksums of files and allow them to be rolled back to previous working versions.

Install ZFS file system support

It is easy to install and use the ZFS file system in Ubuntu, but the Ubuntu LTS and * Ubuntu versions are installed differently.

Ubuntu 16.04 LTS:sudo apt install zfs

Ubuntu 17.04 and update: sudo apt install zfsutils

After installing the utility, you can use the tools provided by ZFS to create ZFS drives and partitions.

Create a ZFS pool

The concept of ZFS pools is very similar to RAID, and if you understand the storage space in Windows 10, it is not difficult to understand it.

RAID0

As you all know, RAID0 simply integrates all the disk drives into one huge storage space. It can improve the read and write speed of the drive, but it has the ability to tolerate numerous data. as long as one of the disks is broken, data will be lost.

To implement RAID0 using ZFS, simply create a simple pool:

Sudo zpool create pool-name / dev/sdc / dev/sdd

RAID1 (mirrored)

You can use the mirror keyword to achieve the RAID1 function of ZFS, RAID1 does not need to introduce it, is to create a 1-to-1 copy of the hard drive. This not only allows you to have a full backup copy of the data, but also improves read and write performance. Of course, the total storage space of physical disks will also be halved.

Sudo zpool create pool-name mirror / dev/sdc / dev/sdd

RAID5 (RAIDZ1)

ZFS implements the RAID5 function as RAIDZ1. RAID5 requires a multiple of 3 for the drive, where the space of 1max 3 is used for writing parity data and the data storage space of 2max 3 is reserved. If one of the drives fails, the array will remain online, but the failed disk should be replaced as soon as possible.

Sudo zpool create pool-name raidz1 / dev/sdc / dev/sdd / dev/sde

RAID6 (RAIDZ2)

RAID6 is similar to RAID5, but works four times the number of disks, not three times the number of disks. It uses twice the parity data and allows up to 2 drive failures.

Sudo zpool create pool-name raidz2 / dev/sdc / dev/sdd / dev/sde / dev/sdf

RAID10

RAID10 is designed to improve read and write speed and data redundancy and striping. It requires multiples of at least 4 disks and only half the data storage space. RAID10 can be created by creating two mirrors.

Sudo zpool create pool-name mirror / dev/sdc / dev/sdd mirror / dev/sde / dev/sdf

Use ZFS Pool

Once we have created the ZFS pool in Ubuntu, we also need to use some administrative tools. First, you can check and view the status of the ZFS pool with the following command:

Sudo zpool status

When checking ZFS status, the pool will notify you of all updates you need to know. To update the pool, run the following command:

Sudo zpool upgrade pool-name

You can also update all ZFS pools with the following command:

Sudo zpool upgrade-a

Of course, you can also add new disk drives to the pool at any time by using zpool to specify the pool name and drive location:

Sudo zpool add pool-name / dev/sdx

* remind everyone that the ZFS pool will create a directory in the root file system of Linux for users to use. You can use the GUI file manager or CLI to browse and use them.

At this point, the study on "how to install and use the ZFS file system in Ubuntu" is over. I hope to be able to solve your doubts. The collocation of theory and practice can better help you learn, go and try it! If you want to continue to learn more related knowledge, please continue to follow the website, the editor will continue to work hard to bring you more practical articles!

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