Introduction of feature flags?

[danb35]

Just curious about a historical question, and I'm having trouble tracking down the answer: When were feature flags (i.e., OpenZFS v5000) introduced in FreeNAS? The cover of the 9.1.0 user guide indicates OpenZFS v28, but the 9.2.0 user guide doesn't state a version. Would it be correct to conclude that the change came between those two versions?

 

[dlavigne]

Looks like the cover wasn't updated. But it is very clear in the 9.1.0 What's New section:

New ZFS feature flags have been added. This includes LZ4 which is now the recommended
compression algorithm.

 

[BigDave]

I did not read all this but it sounds like your answer.
https://www.ixsystems.com/blog/cutting-edge-truenas/

 

[danb35]

But it is very clear in the 9.1.0 What's New section:

Sure enough--just RTFM a bit better. So 9.1 moved to "v5000", while 8.3.2 was on v28.