TH MKFS 8
SH NAME
mkfs, mkext \- archive or update a file system
SH SYNOPSIS
B disk/mkfs
RB [ -aprvx ]
RB [ -d
IR root ]
RB [ -n
IR name ]
RB [ -s
IR source ]
RB [ -u
IR users ]
RB [ -z
IR n ]
I proto ...
PP
B disk/mkext
RB [ -d
IR name ]
RB [ -u ]
RB [ -h ]
RB [ -v ]
RB [ -x ]
I file ...
SH DESCRIPTION
I Mkfs
copies files from the file tree
I source
(default
BR / )
to a
B kfs
file system (see
IR kfs (4)).
The kfs service is mounted on
I root
(default
BR /n/kfs ),
and
B /adm/users
is copied to
IB root /adm/users\f1.
The
I proto
files are read
(see
IR proto (2)
for their format)
and any files specified in them that are out of date are copied to
BR /n/kfs .
PP
I 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copies only those files that are out of date.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
I kfs
file system that are not specified in the
I proto
file
are not updated and not removed.
PP
The options to
I mkfs
are:
TF "s source"
TP
B a
Instead of writing to a
B kfs
file system, write an archive file to standard output, suitable for
IR mkext .
All files in
IR proto ,
not just those out of date, are archived.
TP
B x
For use with
BR -a ,
this option writes a list of file names, dates, and sizes to standard output
rather than producing an archive file.
TP
BI "d " root
Copy files into the tree rooted at
I root
(default
BR /n/kfs ).
TP
BI "n " name
Use
RI kfs. name
as the name of the kfs service (default
BR kfs ).
TP
B p
Update the permissions of a file even if it is up to date.
TP
B r
Copy all files.
TP
BI "s " source
Copy from files rooted at the tree
IR source .
TP
BI "u " users
Copy file
I users
into
B /adm/users
in the new system.
TP
B v
Print the names of all of the files as they are copied.
TP
BI "z " n
Copy files assuming kfs block
I n
(default 1024)
bytes long.
If a block contains only 0-valued bytes, it is not copied.
PD
PP
I Mkext
unpacks archive files made by the
B -a
option of
IR mkfs .
The
B -d
option specifies a directory (default
BR / )
to serve as the root of the unpacked file system.
The
B -u
option, to be used only when initializing a new
IR 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 specified, the entire archive is unpacked;
in this case, missing intermediate directories are not created.
The
B -v
option prints the names and sizes of files as they are extracted;
B -h
prints headers for the files on standard output
instead of unpacking the files.
SH EXAMPLES
PP
Make an archive to establish a new file system:
IP
EX
disk/mkfs -a -u files/adm.users -s dist proto > arch
EE
PP
Unpack that archive onto a new file system:
IP
EX
srv il!newfs
mount -c /srv/il!newfs /n/newfs
disk/mkext -u -d /n/newfs < arch
EE
SH SOURCE
B /sys/src/cmd/disk/mkfs.c
br
B /sys/src/cmd/disk/mkext.c
SH "SEE ALSO"
IR prep (8),
IR kfscmd (8),
IR sd (3)

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