  NFS  Ʈ  ý Ʈϱ(nfsroot)

  Gero Kuhlmann, gero@gkminix.han.de Martin Mares mj@atrey.kar
  lin.mff.cuni.cz
  1996-1997
  xunil@linuxfan.com
  1999 6

  ࿡ X-͹̳̳   ũ  ý  Ѵٸ
  Ʈ  ý ũ ƴ   ؾѴ. ũٰ
    ְ NFS ؼ   ִ.   Ʈ  ý
   NFS  °  ̴.  "Ŭ̾Ʈ" 
  ũ  ý ϴ ̰, ""  NFS  ϴ
  ̴.
  ______________________________________________________________________

  

  1. nfsroot Ȱȭ Ű
  2. Ŀ ɾ 
  3. Ŀ δ
     3.1 dd Ἥ Ŀ ÷ǿ 
     3.2 LILO 
     3.3 loadlin 
     3.4 Boot ROM 

  4. ũƮ

  ______________________________________________________________________

  1.  nfsroot Ȱȭ Ű

  nfsroot  ؼ Ŀ  NFS ϵ ؾѴ.
  ⼭ NFS  ϸ  ȴٴ  ϶.  ũƮ
   nfsroot    ̰,  ̶ Ѵٸ 
  ڵ  ý    ̴. BOOTP RARP 
  ϴ.

  2.  Ŀ ɾ 

  Ŀ Ʈ δ(loadlin, LILO, ƮƮ Ʈ α׷͵) 
  ε Ǹ  Ʈ  ý ̽ ,  
  ã,  Ʈ Ʈ 丮 ̸  ˾ƾ
  Ѵ. ̰͵ Ŀ ɾ  Ķ͵ ذ  ִ.

       root=/dev/nfs

  ̰  NFS ̽ Ȱȭ Ű ؼ ʿϴ.  
  ̰ ¥ ̽ Ƴ  Ŀο ¥ ̽  NFS
   ִ Ϳ Ұϴٴ ̴.

       nfsroot=[<server-ip>:]<root-dir>[,<nfs-options>]

  ࿡ nsfroot ĶͰ Ѱ ʴ´ٸ Ʈ "/tftpboot/%s" 
   ̴.

       <server-ip>     NFS  IP ּҸ ˷ش.
                       ̰ ٸ ؿ  ip     ̴.
                        Ķʹ RARP NFS  ٸ   
                       ϴ  δ.

       <root-dir>       Ʈ Ʈ 丮 ̸. ⿡ "%s" 
                       ִٸ %s Ŭ̾Ʈ IP ּ ƽŰ · ٲ̴.

       <nfs-options>   ⺻ NFS ɼǵ.  ɼ ޸ еȴ. ɼ ʵ尡
                        ִٸ  ⺻  ̴.
                               port    =  Ʈ   ־ 
                               rsize   = 1024
                               wsize   = 1024
                               timeo   = 7
                               retrans = 3
                               acregmin= 3
                               acregmax= 60
                               acdirmin= 30
                               acdirmax= 60
                               flags   = hard, nointr, noposix, cto, ac

       ip=<client-ip>:<server-ip>:<gw-ip>:<netmask>:<hostname>:<device>:<autoconf>

   Ķʹ Ŀο ̽ IP ּҳ IP  ̺ 
  ġ ΰ ˷ش.  κ  "nfsaddrs" ҷ
   Ʈ  IP  NFSʹ  ̷  "ip"
  ٲ  ̸ ȣȯ  alias  ִ.

   ĶͰ Ŀ ɾ ο  ִٸ,  ʵ ٰ
  ϰ,   ⺻ ȴ. Ϲ Ŀ 
  RARP BOOTP(Ŀ   õǾ ޷ִ.) ̿Ѵٴ
   ǹѴ.

  <client-ip>     Ŭ̾Ʈ IP ּ.  ٸ RARP BOOTP 
                  ȴ.     Ŀ  
                  ̳ <autoconf> ĶͿ ޷ִ.  ʴٸ
                  RARP BOOTP  ʴ´.

  <server-ip>     NFS  IP ּ. ࿡ RARP Ŭ̾Ʈ ּҸ 
                  ߰  ĶͰ  ʴٸ  ⼭  
                  ޾Ƶ鿩. RARP NFS ٸ Ϸ RARP 
                  ⿡ .(Ȥ ĭ ܳ), ׸ NFS 
                  "nfsroot"ĶͿ ָ ȴ.  Ⱑ  ִٸ
                  RARP BOOTP   NFS  ̴.

  <gw-ip>          ٸ ݿ  Ʈ IP ּ.
                  Ⱑ  ִٸ Ʈ ̴  ʰ  
                  Ʈũ ִٰ ϰų BOOTP ˷  .

  <netmask>        Ʈũ ̽  ݸũ.
                   ִٸ Ŭ̾Ʈ IP ּҿ    ݸũ
                  δ. ƴ BOOTP  ǰų.

  <hostname>      Ŭ̾Ʈ ̸. ٸ Ŭ̾Ʈ IP ּҴ ƽŰ
                  ǥ ̰ų BOOTP   δ.

  <device>         Ʈũ ̽ ̸. ٸ RARP BOOTP û 
                   ̽ ̰    ȴ. ϳ
                  ̽ ִٸ ⸦ ĭ ܵξ .

  <autoconf>      ڵ  . ⼭  RARP BOOTP δ.
                  Ѵ ϰų дٸ Ŀ    δ.
                  "off" ڵ  ٴ ̴.

  <autoconf>Ķʹ ڵ   "ip" ĶͿ ':'
  ܵ   ִ.

  3.  Ŀ δ

  Ŀ ޸𸮷 ø     ִµ  
  Ѱ ޷ ִ.

  3.1.  dd Ἥ Ŀ ÷ǿ 

  ׻ ϴ dd Ἥ Ŀ ÷ǿ   ִ.  Ŀ
  ɾ    . ׷, "root="Ķ͸ üϱ ؼ
  mknod ̿  ѹ 0, ̳ ѹ 255¥  ̽
  Ѵ.

               mknod /dev/boot255 c 0 255

   Ŀ, zImage  dd ÷ǿ ض.

               dd if=/usr/src/linux/arch/i386/boot/zImage of=/dev/fd0

  ׸  rdev Ἥ Ʈ ̽ .

               rdev /dev/fd0 /dev/boot255

  ⿡ ´ ¥ ̽   /dev/boot255   ȴ.
  ٸ ΰ Ŀ ɾ Ķʹ rdev ٲ    RARP
  BOOTP  ⺻   ̴. ࿡ RARP  
  ޾Ҵٸ /tftpboot/<client-ip>/  Ʈ 丮 Ʈ ̰,
  BOOTP   ޾Ҵٸ 信 ԵǾ ִ 丮 ̸
  Ʈ Ʈ ɰ̴.

  3.2.  LILO 

  θ ٸ  Ͽ "append="  ʿ 
  Ķ͵   ִ. "root="   ؼ 3.1
  ߴ ó   ̽  Ѵ.  ο "append="
    Ϳ     ϶.

  3.3.  loadlin 

  ڽ ϵ ũ Ʈ Ʈϱ   Ʈ 
  Ϸ Ѵٸ ε帰  ȴ.   Ѵٴ  
   غ ʾҴ.  ο  ó Ŀ ɾ
      ̴.  ˷ ε帰  ϶.

  3.4.  Boot ROM 

    ũ  Ŭ̾Ʈ ýŰ  õ 
  ̴. Ʈ   TFTP  Ἥ Ŀ εѴ.
   ƴ ѵ  Ʈũ    ϴ
   Ʈ  sunsite.unc.edu ̷ Ʈ 
   ΰ Ʈ ִµ "netboot-nfs" "etherboot" Ѵ. 
  ٴ ũ   Ŭ̾Ʈ ýŰµ ʿ  
  ִ.

  4.  ũƮ

  Ŀ nfsroot ڵ RARP   Gero
  Kuhlmann(gero@gkminix.han.de) ۼߴ.

  IP  ڵ ڵ  Martin
  Mares(mj@atrey.karlin.mff.cuni.cz) ۼߴ.

  nfsroot ʱȭ   ؼ Jens-Uwe
  Mager(jum@anubis.han.de)  Ѵ.

