mkfs, mkext - archive or update a file system
disk/mkfs [-aprv] [-n name] [-s source] [-u users] [-z n] proto ...
disk/mkext [-d name] [-u] [-h] [-v] file ...
Mkfs copies files from the file tree source (default /) to a kfs file system (see kfs(4)).
The kfs service is mounted on /n/kfs, and /adm/users is copied to /n/kfs/adm/users. The
proto files are read, and any files specified in them that are out of date are copied to
Each line of the proto file specifies a file to copy. Indentation is significant, with
each level of indentation corresponding to a level in the file tree. Fields within a line
are separated by white space. The first field is the last path element in the destination
file tree. The second field specifies the permissions. The third field is the owner of
the file, and the fourth is the group owning the file. The fifth field is the name of the
file from which to copy; this file is read from the current name space, not the source
file tree. All fields except the first are optional.
Names beginning with a are expanded as environment variables. If the first file specified
in a directory is all of the files in that directory are copied. If the first file is all
of the files are copied, and all subdirectories are recursively copied.
Mkfs copies only those files that are out of date. Such a file is first copied into a
temporary file in the appropriate destination directory and then moved to the destination
file. Files in the kfs file system that are not specified in the proto file are not
updated and not removed.
The options to mkfs are:
a Instead of writing to a kfs file system, write an archive file to standard output,
suitable for mkext. All files in proto, not just those out of date, are archived.
n name Use kfs.name as the name of the kfs service (default kfs).
p Update the permissions of a file even if it is up to date.
r Copy all files.
Copy from files rooted at the tree source.
Copy file users into /adm/users in the new system.
v Print the names of all of the files as they are copied.
z n Copy files assuming kfs block n (default 1024) bytes long. If a block contains
only 0-valued bytes, it is not copied.
Mkext unpacks archive files made by the -a option of mkfs. The -d option specifies a
directory (default /n/kfs) to serve as the root of the unpacked file system. The -u
option, to be used only when initializing a new fs(4) file system, sets the owners of the
files created to correspond to those in the archive and restores the modification times of
the files. (This is only permitted at the initial load of the files into a file system.)
Each file on the command line is unpacked in one pass through the archive. If the file is
a directory, all files and subdirectories of that directory are also unpacked. When a
file is unpacked, the entire path is created if it does not exist. If no files are speci-
fied, the entire archive is unpacked; in this case, missing intermediate directories are
not created. The -v option prints the names and sizes of files as they are extracted; -h
prints headers for the files on standard output instead of unpacking the files.
Make an archive to establish a new file system:
disk/mkfs -a -u files/adm.users -s dist proto > arch
Unpack that archive onto a new file system:
mount -c /srv/il!newfs /n/newfs
disk/mkext -u -d /n/newfs < arch
directory of prototype files.
generic prototype file.
prep(8), kfscmd(8), wren(3), pip(8)