md devices mounted with async
kris at FreeBSD.org
Sat Jun 14 23:19:48 UTC 2008
> 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.
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