From mboxrd@z Thu Jan  1 00:00:00 1970
Date: Wed, 28 Apr 2021 09:15:02 +0100
From: "Dr. David Alan Gilbert" <dgilbert@redhat.com>
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Subject: Re: [Virtio-fs] Min host / vm kernel rev for basic DAX ops?
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To: "Harry G. Coin" <hgcoin@gmail.com>
Cc: virtio-fs@redhat.com

* Harry G. Coin (hgcoin@gmail.com) wrote:
> Kindly answer a couple 'basic' virtiofs questions:
> 
> 1) Which mainline kernel version is necessary for the host, and for the
> vm to enable reliable DAX operations -- supposing no shared host
> activity on the underlying fs.

I don't think there's any host kernel dependency for DAX
currently.
(You do need a guest with the DAX support)

> 2) Which host file system(s) have the best DAX performance while
> offering xattr and related abilities?

I'm not aware of any comparison between host filesystems.

Dave

> Thanks
> 
> 
> 
> 
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-- 
Dr. David Alan Gilbert / dgilbert@redhat.com / Manchester, UK