mimic_hfs: any disadvantages?

All your general support questions for OpenZFS on OS X.

mimic_hfs: any disadvantages?

Postby mkush » Sun Nov 26, 2017 8:32 pm

I'm about to have a fresh go at using OpenZFS as my main data store on my classic Mac Pro. It will house an iTunes library at least, maybe a Photos library... So it seems I should be setting mimic_hfs to on.

My question is: Are there any disadvantages to doing so? Or stated another way: Why not just do that for all datasets as default?
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Re: mimic_hfs: any disadvantages?

Postby lundman » Mon Nov 27, 2017 2:49 am

When you ask a filesystem for its name, it should return "zfs" or "hfs" correctly, so that properly written software can use it (as a guide). That we let you override it to say "hfs" because a few applications are doing stupid things is one thing, and a whole other to set it to be default and always "lying"
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Re: mimic_hfs: any disadvantages?

Postby mkush » Mon Nov 27, 2017 6:46 am

Understood, in principle it is simply incorrect.

So I could ask the converse then: Are you aware of any software that will function incorrectly because it doesn’t know that the filesystem is ZFS?
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