user mode linux 2.4.18.36um-0

Tested on Red Hat 7.3

Installation

• Install UML and prepare an image file.

  # rpm -ihv user_mode_linux-2.4.18.36um-0.i386.rpm # bunzip2 -d root_fs.rh-7.2-full.pristine.20020312.bz2 # mv root_fs.rh-7.2-full.pristine.20020312 rh72.img

• if you want to run UML by general user, and use network, you need to change permission of TUN/TAP device as.

  # ls -lt /dev/net/tun # crw------- 1 root root 10, 200 Jan 30 16:24 /dev/net/tun # chmod go+rw /dev/net/tun # crw-rw-rw- 1 root root 10, 200 Jan 30 16:24 /dev/net/tun

• Start UML linux and make diff file. Default accounts are
  ID=root PASS=root
  ID=user PASS=user
  If an IP Address of host OS is 192.168.0.103, then

  # linux ubd0=rh72.diff,rh72.img eth0=tuntap,,,192.168.0.103 ... Unauthorized access to this system is strictly prohibited. redhat72 login: root Password: Login incorrect login: root Password: Login incorrect login: root Password: You are required to change your password immediately (password aged) Changing password for root (current) UNIX password: Enter new UNIX password: Retype new UNIX password:

• Shutdown guest OS

  # /sbin/shutdown -h 0

• Start UML linux.
  

  # linux ubd0=rh72.diff eth0=tuntap,,,192.168.0.103

  Host Filesystem

  Guest OS can access Host OS file system using Host Filesystem
• It can mount root directory of Host OS to /mnt/home on Guest OS

  # mount none /mnt/home -t hostfs

• If you want to specify the directory of Host OS

  # mount none /mnt/home -t hostfs -o /home/hoge

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