zfs features

[pedz]

I finally upgraded to TrueNAS-13.0-U4 and I get a polite message that some ZFS features are not enabled.

So, I found a full list of features ZSH has and what they do. But I can't figure out how to get a list of features that are not yet enabled so I can figure out if it is safe to enable them. One person's approach is "if you don't know what they are, you don't need them so don't enable them". But I'd still would like to know what features are available and if it is safe to use them, etc.

 

[sretalla]

If you have no plan to revert to a previous TrueNAS version, there's no "risk" to having unused features enabled.

Have a look here for more information:

ZFS Feature Flags in TrueNAS

OpenZFS' distributed development led to the introduction of Feature Flags. Instead of incrementing version numbers, support for OpenZFS features is indicated by Feature Flags. Feature Flag states Feature flags exist in one of three states...

www.truenas.com

The commands at the end answer your question.

To shortcut it:
zpool get all <poolname> | grep feature

 

[pedz]

If you have no plan to revert to a previous TrueNAS version, there's no "risk" to having unused features enabled.

Have a look here for more information:

ZFS Feature Flags in TrueNAS

OpenZFS' distributed development led to the introduction of Feature Flags. Instead of incrementing version numbers, support for OpenZFS features is indicated by Feature Flags. Feature Flag states Feature flags exist in one of three states...

www.truenas.com

The commands at the end answer your question.

To shortcut it:
zpool get all <poolname> | grep feature

I figured there was no risk but the messages kept saying "go find stuff out" so I thought I should. I just upgraded from V12 to V13. Everything seems fine. I'll keep poking at it to make sure it is all working and if I don't see any issues, I'll enable the zfs features.

Thank you for your time.