local memory-based UNIX filesystem

MAX MFS SIZE => 512MB
http://www.mimedefang.com/kwiki/index.cgi?action=diff&page_name=RamB
asedSpoolDirectory&revision_id=-1


`man mfs'

mount_mfs -s 131072 -o nosuid,nodev,nosymfollow /dev/da0s1b /tmp

size * 512 Bytes = MB
1MB ->   2048
64MB -> 131072

-s size
             The size of the file system in sectors.  This value defaults to
             the size of the raw partition specified in special (in other
             words, newfs will use the entire partition for the file system).


ex) 스왑파티션에 사용하는 예제

# Device                Mountpoint      FStype  Options         Dump    Pass#
/dev/wd0s1b             none            swap    sw              0       0
/dev/wd0s1b             /mnt/mfs        mfs     rw,-s131072     0       0


FreeBSD 5.x moconfig(8)

http://www.freebsd.org/doc/en_US.ISO8859-1/books/handbook/disks-virt
ual.html#AEN25412


This will create a 512 MB memory filesystem (the -s size is in 512 byte blocks).
Incidentally, 512 MB is the maximum allowed on a stock !FreeBSD system (compile a
new kernel to change this). For some reason, !FreeBSD mounts this with asynchronous
updates. To force synchronous, ammend the command to   This will create a 512 MB
memory filesystem (the -s size is in 512 byte blocks). Incidentally, 512 MB is the
maximum allowed on a stock !FreeBSD system (compile a new kernel to change this).
For some reason, !FreeBSD mounts this with asynchronous updates. To force
synchronous, ammend the command to   
    
mount -t mfs -o -s1048576,noasync /dev/sd0s1b /var/spool/MIMEDefang   mount -t mfs
-o -s1048576,noasync /dev/sd0s1b /var/spool/MIMEDefang   
    
The line to add to [=/etc/fstab] is this:   The line to add to [=/etc/fstab] is
this:   
    
/dev/sd0s1b /var/spool/MIMEDefang mfs rw,-s1048576,noasync 0 0