On Wed, Feb 24, 1999 at 05:48:00PM +0100, Benno Senoner wrote:
> Hi,
> 
> I heard that actually soft-raid for Linux can't swap over a /dev/md*
> device.

True and false.

You can swap over Linear, and RAID-0, but there's no point.  See the HOWTO :)

...
> 
> I don't know how much slower it is to swap do a regular file instead
> using the raw partition,

This shouldn't matter, unless your swap file is heavily fragmented.

The kernel builds a map of  memory-page to disk-blocks, and thus doesn't access
the filesystem layer once the swap file is set up.

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