Hi!
For years of using MFS I presumed, that it used virtual memory -- RAM
and swap to store the file system -- using RAM for speed of MFS and swap
when RAM was needed by others.
When I moved to mdconfig, I figured I have to use ``-t swap'' for the
same effect, but it seems, I was wrong -- apparently, ``swap'' means the
filesystem will always hit the disk, even if there is plenty of RAM to
go around. My suspicion was further confirmed, by disabling the swapping
at all -- the mdconfig-ed device stopped working -- disklabel got
ENOMEM.
Now I use ``-t malloc'', but I suspect, this will never hit the disk,
even if there is where to swap and more memory can be used elsewhere. It
seems, ``-t malloc'' simply bites a chunk of RAM away...
Is it possible to make md-devices backed by _virtual memory_? Did the
old MFS do that? Where else am I wrong in this letter?
Thanks! Yours,
-mi
P.S. Where is that new mount_mfs wrapper?
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