Re: RAM disk

["Nino on NetBSD 4.0" <nbsdold%gmx.net@localhost>]

It is precisely this example which for some
reason did not work out for me. Whatever,
the tmpfs version works fine. On FreeBSD I
figured it out both ways. I think a normal
desktop user will be fine with the tmpfs
variant. (The RAM _DISK_ would be nice for
a funny experiment - "climb" into RAM with
chroot and then "climb" back into the disk
- I wonder whether that's actually possible.)

-------- Original-Nachricht --------
> Datum: Thu, 12 Feb 2009 15:24:04 -0500
> Von: Thor Lancelot Simon <tls%rek.tjls.com@localhost>
> An: John Nemeth <jnemeth%victoria.tc.ca@localhost>
> CC: "Nino on NetBSD 4.0" <nbsdold%gmx.net@localhost>, 
> netbsd-users%NetBSD.org@localhost
> Betreff: Re: RAM disk

> On Thu, Feb 12, 2009 at 12:07:07PM -0800, John Nemeth wrote:
> >
> >      As mentioned before, mfs and tmpfs are intended for general
> > purpose RAM disks.  mdconfig is for use with pre-existing disk images.
> 
> Please stop posting misinformation to the NetBSD mailing lists.
> 
> If you insist upon continuing to post misinformation, please at least
> attempt to do so in a less authoritative style.
> 
> As the manual page very clearly says,
> 
> | The mdconfig command configures memory disk devices.  It will associate
> | the special file special_file with a range of user-virtual memory allo-
> | cated by the mdconfig process itself.
> 
> As if that weren't clear enough, the entire contents of the EXAMPLES
> section of the manual page is:
> 
> | EXAMPLES
> |           mdconfig /dev/md0c 2048 &
> |
> |     Configures the memory disk md0c with one megabyte of user-space
> memory.
> 
> Are we to suppose that what this does is that it magically knows to
> allocate 1MB of RAM, and that it fills it with the contents of the file
> named "2048"?  You've got to be kidding me.
> 
> Thor

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