How do you upgrade ZFS pool?
To perform the ZFS pool upgrade, go to Storage ➞ Pools and click (Settings) to upgrade. Click the Upgrade Pool button as shown in Figure 2.5. 6. If the Upgrade Pool button does not appear, the pool is already at the latest feature flags and does not need to be upgraded.
What is pool in ZFS?
Instead of forcing you to create virtualized volumes, ZFS aggregates devices into a storage pool. The storage pool describes the physical characteristics of the storage (device layout, data redundancy, and so on) and acts as an arbitrary data store from which file systems can be created.
How do you check the health of a ZFS pool?
The health of a pool is determined from the state of all its devices. This state information is displayed by using the zpool status command. In addition, potential pool and device failures are reported by fmd , displayed on the system console, and logged in the /var/adm/messages file.
How do I install ZFS?
To install ZFS on Linux, type sudo apt-get install zfsutils-linux -y into the command-line interface (CLI). This example shows how to create a new ZFS data volume that spans two disks, but other ZFS disk configurations are also available. This tutorial uses the zfs-utils setup package.
Who invented ZFS?
Jeff Bonwick
Jeff Bonwick invented and led development of the ZFS file system, which was used in Oracle Corporation’s ZFS storage products as well as startups including Nexenta, Delphix, Joyent, and Datto, Inc.
What is ZFS dRAID?
dRAID is a variant of raidz that provides integrated distributed hot spares which allows for faster resilvering while retaining the benefits of raidz. A dRAID vdev is constructed from multiple internal raidz groups, each with D data devices and P parity devices.
What is ZFS scrubbing?
The scrub examines all data in the specified pools to verify that it checksums correctly. For replicated (mirror or raidz) devices, ZFS automatically repairs any damage discovered during the scrub. The zpool status command reports the progress of the scrub and summarizes the results of the scrub upon completion.
What is Ashift 12?
The value of ashift is actually a bit shift value, so the ashift value for 512 bytes is 9 (29 = 512) while the ashift value for 4,096 bytes is 12 (212 = 4,096).
What is the full form of ZFS?
ZFS stands for Zettabyte File System and is a next generation file system originally developed by Sun Microsystems for building next generation NAS solutions with better security, reliability and performance.