MKZFTREE("1") manual page
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mkzftree - Create a zisofs/RockRidge compressed file tree
mkzftree [OPTIONS]... INPUT OUTPUT
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.
- -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.
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.
Written by H. Peter Anvin <hpa@zytor.com>.
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.
mkisofs(8)
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