KFS(4)                                                     KFS(4)

     NAME
          kfs - disk file system

     SYNOPSIS
          disk/kfs [ -rc ] [ -b n ] [ -f file ] [ -n name ] [ -p perm
          ] [ -s ] [ -B nbuf ]

     DESCRIPTION
          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 intro(5)) access
          to it.  Kfs begins by checking the file system for consis-
          tency, rebuilding the free list, and placing a file descrip-
          tor in /srv/name, where name is the service name (default
          kfs).  If the file system is inconsistent, the user is asked
          for permission to ream (q.v.)  the disk.  The file system is
          not checked if it is reamed.

          The options are

          b n     If the file system is reamed, use n byte blocks.
                  Larger blocks make the file system faster and less
                  space efficient.  1024 and 4096 are good choices.  N
                  must be a multiple of 512.
          c       Do not check the file system.
          f file  Use file as the disk.  The default is /dev/sdC0/fs.
          n name  Use kfs.name as the name of the service.
          p perm  Use perm as the initial permissions for the command
                  channel /srv/service.cmd; the default is 660.
          r       Ream the file system, erasing all of the old data
                  and adding all blocks to the free list.
          s       Post file descriptor zero in /srv/service and read
                  and write protocol messages on file descriptor one.
          B       Allocate nbuf in-memory file system blocks.  The
                  default is as many as will fit in 10% of memory or
                  two megabytes, whichever is smaller.

     EXAMPLES
          Create a file system with service name kfs.local and mount
          it on /n/kfs.

               % disk/kfs -rb4096 -nlocal
               % mount -c /srv/kfs.local /n/kfs

     FILES
          /dev/sdC0/fs  Default file holding blocks.

     SOURCE
          /sys/src/cmd/disk/kfs

     KFS(4)                                                     KFS(4)

     SEE ALSO
          fossil(4), kfscmd(8), mkfs(8), prep(8), sd(3)

     BUGS
          For the moment, 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.

          Kfs doesn't allow creating files with component names longer
          than 28 bytes.