mkzftree
Create a zisofs/RockRidge compressed file tree
see also :
mkisofs
Synopsis
mkzftree
[OPTIONS]... INPUT OUTPUT
add an example, a script, a trick and tips
examples
source
echo "|||||||||||||||||||||||||| mkzftree
||||||||||||||||||||||||"
rm -rf $BUILD/ziso
mkdir -p $BUILD/ziso
mkzftree $INSTALL $BUILD/ziso/NEOUBOX
source
echo "Creating
zisofs..."
mkzftree -z 9 -p2 "${clst_destpath}" "$1/zisofs" \
|| die "Could not run
mkzftree, did you emerge zisofs"
description
Takes an input
file tree (INPUT) and create a corresponding
compressed file tree (OUTPUT) that can be used with
an appropriately patched mkisofs(8) to create a
transparent-compression ISO 9660/Rock Ridge filesystem using
the "ZF" compression records.
options
-f,
--force
Always compress all files, even
if they get larger when compressed.
-z level,
--level level
Select compression level (1-9,
default is 9). Lower compression levels are faster, but
typically result in larger output.
-u,
--uncompress
Uncompress an already
compressed tree. This can be used to read a compressed
filesystem on a system which cannot read them natively.
-p
parallelism, --parallelism
parallelism
Compress in parallel. The
parallelism value indicates how many compression
threads are allowed to run.
-x,
--one-filesystem
Do not cross filesystem
boundaries, but create directory stubs at mount points.
-X,
--strict-one-filesystem
Do not cross filesystem
boundaries, and do not create directory stubs at mount
points.
-C path,
--crib-path path
Steal ("crib") files
from another directory if it looks (based on name, size,
type and modification time) like they match entries in the
new filesystem. The "crib tree" is usually the
compressed version of an older version of the same workload;
this thus allows for "incremental rebuilds" of a
compressed filesystem tree. The files are hardlinked from
the crib tree to the output tree, so if it is desirable to
keep the link count correct the crib path should be deleted
before running mkisofs. The crib tree must be on the
same filesystem as the output tree.
-l,
--local
Do not recurse into
subdirectories, but create the directories themselves.
-L,
--strict-local
Do not recurse into
subdirectories, and do not create directories.
-F,
--file
Indicates that INPUT may
not necessarily be a directory; this allows operation on a
single file. Note especially that if -F is
specified, and INPUT is a symlink, the symlink itself
will be copied rather than whatever it happens to point
to.
-s,
--sloppy
Treat file modes, times and
ownership data as less than precious information and
don’t abort if they cannot be set. This may be useful
if running mkisofs on an input tree you do not
own.
-v,
--verbose
Increase the program
verbosity.
-V value,
--verbosity value
Set the program verbosity to
value.
-q,
--quiet
Issue no messages whatsoever,
including error messages. This is the same as specifying
-V 0.
-h,
--help
Display a brief help
message.
-w,
--version
Display the release
version.
copyright
Copyright © 2001-2002 H. Peter Anvin.
This is free software; see the source for copying conditions.
There is NO warranty; not even for MERCHANTABILITY or FITNESS FOR
A PARTICULAR PURPOSE.
bugs
Long options
(beginning with --) may not work on all
systems. See the message printed out by
mkzftree -h to see if this applies to your
system.
Inode change
times (ctimes) are not copied. This is a system limitation
and applies to all file copy programs.
If using the
parallel option (-z) the access times (atimes)
on directories may or may not be copied. If it is important
that the atimes on directories are copied exactly, avoid
using -z.
see also
mkisofs
author
Written by H.
Peter Anvin <hpa[:at:]zytor[:dot:]com>.