MM(1L)MM(1L)NAME
mm - mirror master
SYNOPSIS
mm [flags] [package-files]
DESCRIPTION
mm is the mirror master. It runs multiple calls to mirror in parallel
and handles locking and minimal retry times.
As with mirror, mm is a package written in Perl.
mm presumes that all the package details are stored in a directory
called packages. All the packages for a given site must be in a file
whose name is the same as that of the site. So in packages/sun‐
site.org.uk will be all the package details for the host sun‐
site.org.uk.
OPTIONS-t Ignore the minimal retry timers.
-o site:package
Only mirror the given site:package.
-debug Enable debugging. If this argument is given more than once the
debugging level will increase. Currently the maximum useful
level is four.
-s Enable status debugging. This will print out the status of any
subprocess as it is spawned or as it exits.
CONFIGURATION FILE
The configuration file is parsed as a series of statements.
Blank lines and lines beginning with a hash are ignored. There
are are two kinds of statements, controls and site:package
details.
Control statements are of the form:
keyword=value
You can add whitespace around the equals.
Here is a list of the keywords and their values, any defaults are given
inside square brackets:
home Directory that mm chdirs to before doing any work. ['']
max Maximum number of mirrors that can be running in paral‐
lel at any one time ['6']
mirror This is the way to call mirror. Any occurence of $args,
$package or $site is replace with the appropriate entry
from the package. Any $pkg is replaced with a version of
$package with all characters that cause problems in
filenames converted to underscore. The default is: exec
./mirror \$args -p'\$package' packages/\$site >
logs/\$site:\$pkg 2>&1 ['']
cmd Run the given command. This can occur multiple times.
['']
cmdin Run the given command and use its output as mm input.
This can occur multiple times. ['']
skip Skip the given site:package when it occurs. ['']
In addition to control statements there are also package details. Each
package details statement is of the form:
site:package min-restart-last-ok min-restart-last-notok mirror-args
The site and package fields are matched against those in the packages.
A mirror will only be run to this site:package if the last mirror run
was more than min hours out. The min-restart-last-ok limit will be
used if the last call to mirror was successful. If the mirror call
failed then min-restart-last-notok will be used.
EXAMPLES
Here is a simple mm input file to manage mirroring two packages.
home=/public/mirror
ftp.cl.cam.ac.uk:JIPS-nrs 20 20
hcrl.open.ac.uk:hcrl-psion 20 20
More usually the auxilly program pkgs_to_mmin will be used to automati‐
cally convert the contents of the packages directory into the
site:package statements.
home=/public/mirror
cmdin=./pkgs_to_mmin packages/*
AUTHOR
Written by Lee McLoughlin <lmjm@icparc.ic.ac.uk>.
21 April 1993 MM(1L)
