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Date: Sun, 15 Jun 2008 01:19:46 +0200
From: Kris Kennaway <kris@FreeBSD.org>
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Cc: questions@freebsd.org
Subject: Re: md devices mounted with async
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RW wrote:
> mdmfs(8) has an example of a malloc-backed md device mounted with the
> async option. Is there any point in doing this with malloc and vnode
> devices? In neither case does a write to the file-system require a write
> to a physical disk.

Well, for vnode devices it does write to the disk, but that isn't the 
point; in both cases you are writing to the filesystem that is mounted 
on top of the md, so that will be faster if it is mounted async.

Kris