VMs in truenas

[frank98]

Hello, sorry for the inconvenience, I need your help...
I have VMs created in truenas, is there a way to export them? in order to keep them safe?
Let me explain better in case the machine with the disks breaks and nothing is recoverable ... I need a way to save the VMs and import them without problems

 

[sretalla]

The config DB contains all the settings of the VM (like location of the ZVOLs for its disks and the amount of Memory/CPU, etc), so taking a backup of the config of TrueNAS is one part.

Then you have options regarding the VM disk (the ZVOL) backup.

Basically you can either use zfs send | recv to put the zvol somewhere else for safekeeping (typically sending a snapshot), or just use the snapshots and a general backup of the entire data pool(s), depending on what you're actually trying to protect against.

 

[frank98]

Thanks for the answer, I'm a beginner could you help me a little more detail? Thanks again

 

[sretalla]

For configuration backup:

General Settings Screen

Provides information on the General Settings screen, widgets, and configuration settings for getting support, changing console or the GUI, localization and keyboard setups, and adding NTP servers.

www.truenas.com

There's nothing per se in the GUI for backing up a ZVOL, although you can manage the snapshots there:

Adding Periodic Snapshot Tasks

Provides instructions on creating periodic snapshot tasks in TrueNAS.

www.truenas.com

/scale/scaleuireference/datasets/snapshotsscreens/

Once you have one or more snapshots, you can use those to copy the zvol (VM disk/s) somewhere else, either with a replication task (which can even do it's own snapshots if you don't already do them):

Replication Tasks

Tutorials for configuring ZFS snapshot replication tasks in TrueNAS.

www.truenas.com

or with other options that get much too complicated to try to explain here.

When you have more specific questions, we can proceed to answer them