1MKZFTREE(1) H. Peter Anvin MKZFTREE(1)
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6 mkzftree - Create a zisofs/RockRidge compressed file tree
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9 mkzftree [OPTIONS]... INPUT OUTPUT
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12 Takes an input file tree (INPUT) and create a corresponding compressed
13 file tree (OUTPUT) that can be used with an appropriately patched
14 mkisofs(8) to create a transparent-compression ISO 9660/Rock Ridge
15 filesystem using the "ZF" compression records.
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18 -f, --force
19 Always compress all files, even if they get larger when com‐
20 pressed.
21 -z level, --level level
23 Select compression level (1-9, default is 9). Lower compression
24 levels are faster, but typically result in larger output.
25 -u, --uncompress
27 Uncompress an already compressed tree. This can be used to read
28 a compressed filesystem on a system which cannot read them
29 natively.
30 -p parallelism, --parallelism parallelism
32 Compress in parallel. The parallelism value indicates how many
33 compression threads are allowed to run.
34 -x, --one-filesystem
36 Do not cross filesystem boundaries, but create directory stubs
37 at mount points.
38 -X, --strict-one-filesystem
40 Do not cross filesystem boundaries, and do not create directory
41 stubs at mount points.
42 -C path, --crib-path path
44 Steal ("crib") files from another directory if it looks (based
45 on name, size, type and modification time) like they match
46 entries in the new filesystem. The "crib tree" is usually the
47 compressed version of an older version of the same workload;
48 this thus allows for "incremental rebuilds" of a compressed
49 filesystem tree. The files are hardlinked from the crib tree to
50 the output tree, so if it is desirable to keep the link count
51 correct the crib path should be deleted before running mkisofs.
52 The crib tree must be on the same filesystem as the output tree.
53 -l, --local
55 Do not recurse into subdirectories, but create the directories
56 themselves.
57 -L, --strict-local
59 Do not recurse into subdirectories, and do not create directo‐
60 ries.
61 -F, --file
63 Indicates that INPUT may not necessarily be a directory; this
64 allows operation on a single file. Note especially that if -F
65 is specified, and INPUT is a symlink, the symlink itself will be
66 copied rather than whatever it happens to point to.
67 -s, --sloppy
69 Treat file modes, times and ownership data as less than precious
70 information and don't abort if they cannot be set. This may be
71 useful if running mkisofs on an input tree you do not own.
72 -v, --verbose
74 Increase the program verbosity.
75 -V value, --verbosity value
77 Set the program verbosity to value.
78 -q, --quiet
80 Issue no messages whatsoever, including error messages. This is
81 the same as specifying -V 0.
82 -h, --help
84 Display a brief help message.
85 -w, --version
87 Display the release version.
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90 Long options (beginning with --) may not work on all systems. See the
91 message printed out by mkzftree -h to see if this applies to your sys‐
92 tem.
93 Inode change times (ctimes) are not copied. This is a system limita‐
95 tion and applies to all file copy programs.
96 If using the parallel option (-z) the access times (atimes) on directo‐
98 ries may or may not be copied. If it is important that the atimes on
99 directories are copied exactly, avoid using -z.
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102 Written by H. Peter Anvin <hpa@zytor.com>.
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105 Copyright © 2001-2002 H. Peter Anvin.
106 This is free software; see the source for copying conditions. There is
107 NO warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
108 PURPOSE.
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111 mkisofs(8)
112zisofs-tools 30 July 2001 MKZFTREE(1)