legion/docs/readmes/README.create_diskimage

/*
 * Copyright 2004 Sun Microsystems, Inc.  All rights reserved.
 * Use is subject to license terms.
 */
#pragma ident   "@(#)README.create_diskimage    1.1     05/03/14 SMI"

##########
## Creating a valid Legion disk image
##
## Mon Mar  7 09:33:44 PST 2005
##
## Steps for creating a disk image for simulation use. You
## will need to ensure that the amount of disk space used
## in your root filesystem is small enough for the disk
## you are creating (or the disk is large enough for the
## root partition you are cloning)..
##
## tycho.nightingale@sun.com, michael.ogorman@sun.com
##
##########

 # mkfile -n 512m file
 # lofiadm -a file
 # newfs /dev/rlofi/1
 # installboot sun4v_bootblk /dev/rlofi/1
 # mount /dev/lofi/1 /mnt
 # cd /mnt
 # ufsdump 0f - / | ufsrestore xf - .
 # cd /
 # umount /mnt
 # fsck -y /dev/rlofi/1
 # lofiadm -d /dev/rlofi/1
 # make_valid_disk_label file || teach_legion_about_creating_labels

## Currently, legion needs a valid disk label on your disk image.
## It will then overwrite this with the new values for the slices
## you specify in your legion conf file and it creates a valid
## s2 size to represent the entire disk.
##
## This needs to be fixed so that legion can create the entire
## label on it's own, regardless of what's in the first 512
## byte block of the disk
##
## Until this is done, you need to add a label to a disk image
## as follows:
###################


 # dd if=/dev/rdsk/c0t1d0s0 of=./label.dd bs=1b count=1 conv=sync
 # dd if=./label.dd of=./disk.image  bs=1b count=1 conv=notrunc

##
## To make a disk bootable under legion you will
## need the following config changes:
## note: $BIN is a reference to /home/mo23723/workspace/snapshots/disks/bin

 # lofiadm -a file
 # mount /dev/lofi/1 /mnt
 - Add [hsimd "SUNW,legion-disk"] to /mnt/etc/driver_aliases
 - Add [hsimd 246] to /mnt/etc/name_to_major (ensure number not already in use)
 - Add hsimd driver as follows:
 # cp $BIN/hsimd /mnt/platform/sun4v/kernel/drv/sparcv9/hsimd
 # cd /mnt; cpio  -icdB < $BIN/devices.cpio XXX Show list of devicesto create XXX
 # cp $BIN/vfstab /mnt/etc/vfstab
 - remove root passwd
 - comment out smf startup line in /etc/inittab