MKZFTREE - Online Linux Manual PageSection : 1
Updated : 30 July 2001
Source : zisofs-tools
Note : H. Peter Anvin

NAMEmkzftree − Create a zisofs/RockRidge compressed file tree

SYNOPSISmkzftree [OPTIONS]... INPUT OUTPUT

DESCRIPTIONTakes 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.

BUGSLong 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.

AUTHORWritten by H. Peter Anvin <hpa@zytor.com>.

COPYRIGHTCopyright © 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.

SEE ALSOmkisofs(8)
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