Auto TRIM

[alex992]

Can I enable Auto TRIM on non SSD pool?

 

[sretalla]

I'm pretty sure the TRIM setting is system-wide, so no specifics for just one pool... although the question does raise itself... why would you want to enable TRIM for a pool where TRIM isn't relevant?

 

[alex992]

There is checkmark under the pool options. Pools---pools options-----checkmark to unable

 

[HoneyBadger]

TRIM is only supported by solid-state drives*, so it will do nothing for you here.

So to answer your question - "Yes, but why?"

*or SMR drives that have no business being in your pool

 

[sretalla]

Pools---pools options

OK; I'm with you now... that option was added in 12.0 U1, I think.

In any case as already stated, even if you can, what's the point?

 

[alex992]

Thank you

 

[AlexGG]

TRIM is only supported by solid-state drives, so it will do nothing for you here.

Ahem, not exclusively. TRIM also may or may not be supported by
1. SMR spinning hard drives and
2. Thinly-provisioned iSCSI targets.

 

[HoneyBadger]

Ahem, not exclusively. TRIM also may or may not be supported by
1. SMR spinning hard drives and
2. Thinly-provisioned iSCSI targets.

True enough, but the current state of SMR is "it belongs nowhere near a ZFS setup" - and anyone wanting to build a TrueNAS pool out of remote thin-provisioned iSCSI targets would honestly get the same answer of "Yes, but why?" from me, because there's probably a less convoluted way to accomplish the end result.

Edited.