136 lines
2.2 KiB
Text
Executable file
136 lines
2.2 KiB
Text
Executable file
.TH KFS 4
|
|
.SH NAME
|
|
kfs \- disk file system
|
|
.SH SYNOPSIS
|
|
.B disk/kfs
|
|
[
|
|
.B -rc
|
|
] [
|
|
.B -b
|
|
.I n
|
|
] [
|
|
.B -f
|
|
.I file
|
|
] [
|
|
.B -n
|
|
.I name
|
|
] [
|
|
.B -p
|
|
.I perm
|
|
] [
|
|
.B -s
|
|
] [
|
|
.B -B
|
|
.I nbuf
|
|
]
|
|
.SH DESCRIPTION
|
|
.I Kfs
|
|
is an old, local user-level file server for a Plan 9 terminal with a disk.
|
|
It maintains a hierarchical Plan 9 file system on the disk
|
|
and offers
|
|
9P (see
|
|
.IR intro (5))
|
|
access to it.
|
|
.I Kfs
|
|
begins by
|
|
checking the file system for consistency,
|
|
rebuilding the free list, and placing a file descriptor in
|
|
.BI /srv/ name\f1,
|
|
where
|
|
.I name
|
|
is the service name (default
|
|
.BR kfs ).
|
|
If the file system is inconsistent,
|
|
the user is asked for permission to ream
|
|
.RI ( q.v. )
|
|
the disk.
|
|
The file system is not checked if it is reamed.
|
|
.PP
|
|
The options are
|
|
.TF "n name"
|
|
.TP
|
|
.BI "b " n
|
|
If the file system is reamed, use
|
|
.I n
|
|
byte blocks.
|
|
Larger blocks make the file system faster
|
|
and less space efficient.
|
|
.B 1024
|
|
and
|
|
.B 4096
|
|
are good choices.
|
|
.I N
|
|
must be a multiple of 512.
|
|
.TP
|
|
.B c
|
|
Do not check the file system.
|
|
.TP
|
|
.BI "f " file
|
|
Use
|
|
.I file
|
|
as the disk.
|
|
The default is
|
|
.BR /dev/sdC0/fs .
|
|
.TP
|
|
.BI "n " name
|
|
Use
|
|
.RI kfs. name
|
|
as the name of the service.
|
|
.TP
|
|
.BI "p " perm
|
|
Use
|
|
.I perm
|
|
as the initial permissions for the
|
|
command channel
|
|
.BI /srv/ service .cmd\fR;
|
|
the default is 660.
|
|
.TP
|
|
.B r
|
|
Ream the file system, erasing all of the old data
|
|
and adding all blocks to the free list.
|
|
.TP
|
|
.B s
|
|
Post file descriptor zero in
|
|
.BI /srv/ service
|
|
and read and write protocol messages on file descriptor one.
|
|
.TP
|
|
.B B
|
|
Allocate
|
|
.I nbuf
|
|
in-memory file system blocks.
|
|
The default is as many as will fit in 10% of memory
|
|
or two megabytes, whichever is smaller.
|
|
.PD
|
|
.SH EXAMPLES
|
|
Create a file system with service name
|
|
.I kfs.local
|
|
and mount it on
|
|
.BR /n/kfs .
|
|
.IP
|
|
.EX
|
|
% disk/kfs -rb4096 -nlocal
|
|
% mount -c /srv/kfs.local /n/kfs
|
|
.EE
|
|
.PP
|
|
.SH FILES
|
|
.TF /dev/sdC0/fs
|
|
.TP
|
|
.B /dev/sdC0/fs
|
|
Default file holding blocks.
|
|
.SH SOURCE
|
|
.B /sys/src/cmd/disk/kfs
|
|
.SH "SEE ALSO"
|
|
.IR fossil (4),
|
|
.IR kfscmd (8),
|
|
.IR mkfs (8),
|
|
.IR prep (8),
|
|
.IR sd (3)
|
|
.SH BUGS
|
|
For the moment,
|
|
.I kfs
|
|
serves both the old (third edition) and new (fourth
|
|
edition) versions of 9P, deciding which to serve by sniffing the first packet on each
|
|
connection.
|
|
.LP
|
|
.I Kfs
|
|
doesn't allow creating files with component names longer than 28 bytes.
|