Re: [uml-devel] Which UPS simulator?

[Michael Koehne <kraehe@copyleft.de>]

Moin Dan Shearer,

  why UPS simulation ? I'm using normal mconsole cad feature to power
  down my UMLs. I only have to ensure that the inittab will trigger a
  halt with "ca:12345:ctrlaltdel:/sbin/shutdown -t1 -a -h now" instead
  of rebooting. I then have some helpfull scripts.

  /opt/uml/bin/uml is using screen :

#------------------------------------------------------------------------------
#!/bin/sh

[ $# = 1 ] || {
    echo usage: uml machine
    exit 0
    }
[ -f /opt/uml/$1/$1.config ] || {
    echo machine $1 not defined
    }

if [ -f /opt/uml/$1/$1.running ]
then
    screen -d -r $1
else
    screen -S $1 /opt/uml/bin/uml-start $1
fi
exit 0
#------------------------------------------------------------------------------
  
  /opt/uml/bin/uml-start does a filesystemcheck :

#------------------------------------------------------------------------------
#!/bin/sh

cd /opt/uml/

[ `whoami` != "root" ] && {
        echo "only root can use $0"
        exit 1
        }
[ $# != 1 ] && {
        echo "usage: $0 name"
        exit 0
        }
[ ! -f $1/$1.root.img ] && {
        echo "$1/$1.root.img not found"
        exit 0
        }
[ ! -f $1/$1.swap.img ] && {
        echo "$1/$1.swap.img not found"
        exit 0
        }
[ ! -f $1/$1.options ] && {
        echo "$1/$1.options not found"
        exit 0
        }
[ ! -f /opt/uml/$1/$1.linux ] && {
        echo "/opt/uml/$1/$1.linux not found"
        exit 0
        }
[ -f $1/$1.running ] && {
        echo "$1 already running"
        exit 0
        }

touch $1/$1.running

[ -d $1/$1.root.fs/lost+found ] && umount $1/$1.root.fs
[ -d $1/$1.work.fs/lost+found ] && umount $1/$1.work.fs

echo checking file systems :
[ -f $1/$1.root.img ] && e2fsck -y -f -v $1/$1.root.img
[ -f $1/$1.work.img ] && e2fsck -y -f -v $1/$1.work.img
echo done.

/opt/uml/$1/$1.linux `cat $1/$1.options`

# [ -d $1/$1.root.fs ] && mount -o loop $1/$1.root.img $1/$1.root.fs
# [ -d $1/$1.work.fs ] && mount -o loop $1/$1.work.img $1/$1.work.fs

rm -f $1/$1.running

exit 0
#------------------------------------------------------------------------------

  /opt/uml/bin/uml-stop will halt systems

#------------------------------------------------------------------------------
#!/bin/sh

cd /opt/uml

echo -n UML shutdown systems :

for s
do
    x=$s/$s.running
    if [ ! -f "$x" ] 
    then
        echo " no systems up."
        exit 0
    else
        echo -n " $s "
        echo cad | uml_mconsole $s 2>/dev/null >/dev/null
        echo -n ".";sleep 1
        echo -n ".";sleep 1
        echo -n ".";sleep 1
    fi
done

echo done.

echo -n UML waiting for systems :
while true
do
    for s
    do
	x=$s/$s.running
        if [ ! -f "$x" ] 
        then
            echo all systems down.
            exit 0
        else
            echo -n " $s "
        fi
    done
    echo -n ".";sleep 1
    echo -n ".";sleep 1
    echo -n ".";sleep 1
done
#------------------------------------------------------------------------------

  ask me for a complete shar.gz or tar.gz of my current UML environment :

  uml          uml-copydef      uml-gen      uml-start     uml-tunctl
  uml-bkup     uml-createfs     uml-mount    uml-startall  uml-umount
  uml-bkupall  uml-forward      uml-net      uml-stop      uml_switch
  uml-config   uml-forward-old  uml-running  uml-stopall
  uml-copyall  uml-fsck         uml-screen   uml-tap1

  each UML is defined by a small text config file, so a lot of UMLs
  can be managed in a simple way. Backups for virtual UML machines 
  and migration to other hosts is semiautomatic. e.g. noam is the
  site hosting www.copyleft.de and other domains :

#------------------------------------------------------------------------------
HOST="noam"
DOMAIN="copyleft.de"
MODULES=""

#ETH0OPT="tuntap,,,193.101.47.67"
ETH0BASE="193.101.47"
ETH0WORK="193.101.47.64"
ETH0GATE="193.101.47.65"
ETH0ADDR="193.101.47.67"
ETH0CAST="193.101.47.95"
ETH0MASK="255.255.255.224"

NAMESERVER="193.101.47.33"
PROXY="193.101.47.33:3128"

ROOT="/dev/ubd0"
SWAP="/dev/ubd1"
WORK="/dev/ubd2"

STORSIZE=64
SWAPSIZE=128
ROOTSIZE=256
WORKSIZE=2048
#------------------------------------------------------------------------------

  I recently reinstalled my Libretto laptop :
      Linux makhno 2.6.1-l5skas1 #1 Wed Feb 4 02:25:54 UTC 2004 i686 GNU/Linux
  All i had to do to to run noam on this machine was :

  ssh makhno mkdir -p /opt/uml/bin
  scp /opt/uml/bin/* makhno:/opt/uml/bin
  uml-copydef skel makhno
  uml-copydef noam makhno
  uml-bkup noam makhno
  ssh makhno
  export PATH=/opt/uml/bin:$PATH
  uml-net
  uml noam

Bye Michael
-- 
  mailto:kraehe@copyleft.de             UNA:+.? 'CED+2+:::Linux:2.4.22'UNZ+1'
  http://www.xml-edifact.org/           CETERUM CENSEO WINDOWS ESSE DELENDAM


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