>
>>OK smart fellas, show me! Name four major commercial Unix systems with
>>"ram-disk" and specifics about mounting procedures.
I just made a quick check on my DEC Alpha running OSF/1 3.0. It apparently
supports a memory file system as well. I've never used it, but now my
curiousity is piqued - I'll give this a shot and see if I can do faster
process sequences.
Quoting from man page
/usr/sbin/mfs [-F mount-flags] [newfs-options] [special-device] mount-node
The mfs command builds a memory file system (mfs), which is a UFS file sys-
tem in virtual memory, and mounts it on the specified mount-node. When the
file system is unmounted, mfs exits and the contents of the file system are
lost. If mfs is sent a signal while running, for example during system
shutdown, it attempts to unmount its corresponding file system. The param-
eters for mfs are almost the same as those for newfs. For a memory file
system, the special-device file provides only a set of configuration param-
eters, including the size of the virtual memory segment to allocate. If
the special-device file is omitted, you must specify the segment size. The
special-device file is usually the primary swap area, because that is where
the file system is backed up when free memory gets low and the memory sup-
porting the file system has to be paged.
You can enable /tmp as a memory file system by adding an entry in the
/etc/fstab file. For example, the following line creates a 10 Megabyte
memory file system, mounted on /tmp:
-s20480 /tmp mfs rw 1 0
Note that the contents of a memory file system are lost whenever a reboot
or unmount is performed.
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