Talk:Swap on microSD

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This script can be modified to suit different swap locations as required.
This script can be modified to suit different swap locations as required.
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== SUBJ1 ==
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== SUBJ1 ==
== SUBJ1 ==
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Revision as of 20:11, 5 March 2014

SDCard Partition Methods Thread

Contents

Talk on Dual SD Swap Method

See from post 67 - sixwheeledbeast

Swap Switching Scripts

Latest Version - sixwheeledbeast

Now uses "EOF gainroot" script, although this causes multiple banner messages in the ejectsd script, not sure how to fix. The first switching script works perfectly and fixes the multiple swapping due to a reorder.

swapswitch.sh


#!/bin/sh

#Made by sixwheeledbeast, Estel, Malkavian, peterleinchen and vi_

# Setup swap names for script

## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3
echo $swap0

## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2
echo $swap1

## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3
echo $swap2

# Go root if not
if [ `id -u` != 0 ] ; then
    exec  | sudo gainroot <<EOF
exec sh $0 $*
EOF
          exit $?
fi

# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

# Get and Print Current Swap Pre
swap=`cat /proc/swaps | awk '/dev/ {print $1}'`
echo $swap
banner "$swap"

sleep 5

#Logic
if [ "$swap" = "$swap1" ] ;
then
   nice -20 swapon $swap2
   nice -20 swapoff $swap1
elif [ "$swap" = "$swap2" ] ;
then
   nice -20 swapon $swap1
   nice -20 swapoff $swap2
elif [ "$swap" = "$swap0" ] ;
then
   nice -20 swapon $swap1
   nice -20 swapoff $swap0
sleep 5
# Get and Print Current Swap Post
swappost=`cat /proc/swaps | awk '/dev/ {print $1}'`
banner "$swappost" && exit 1
else
   banner "Swap Switch Failed" && exit 1
fi
#End of Logic

swapswitchejectsd.sh


#!/bin/sh

##Made by sixwheeledbeast, Estel, Malkavian, peterleinchen and vi_

# Setup swap names for script

## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3

## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2

## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3

# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

# Get and Print Current Swap Pre
preswap=`cat /proc/swaps | awk '/dev/ {print $1}'`
banner "$preswap"
sleep 5

#Logic
if [ "$preswap" = "$swap0" ];
then
   banner "Swap on Internal already" && exit 1
elif [ "$preswap" = "$swap1" ];
then
# Go root if not

if [ `id -u` != 0 ] ; then
          exec | sudo gainroot <<EOF
exec sh $0 $*
EOF
         exit $?
fi
   nice -20 swapon $swap0
   nice -20 swapoff $swap1
sleep 3
swappostswitchone=`cat /proc/swaps | awk '/dev/ {print $1}'`
banner "$swappostswitchone" 
sleep 2
banner "Safe to remove back cover" && exit 
elif [ "$preswap" = "$swap2" ];
then

# Go root if not

if [ `id -u` != 0 ] ; then
          exec | sudo gainroot <<EOF
exec sh $0 $*
EOF
         exit $?
fi
   nice -20 swapon $swap0
   nice -20 swapoff $swap2
swappostswitchtwo=`cat /proc/swaps | awk '/dev/ {print $1}'`
banner "$swappostswitchtwo" 
sleep 2
banner "Safe to remove back cover" && exit 
else
   banner "Swap Switch Failed" 
 sleep 2
   banner "DO NOT REMOVE BACK COVER - Please check swaps manually via terminal" && exit 2
fi

Version 1 - sixwheeledbeast

swapswitch.sh


#!/bin/sh

# Made by sixwheeledbeast, Malkavian, Estel and vi_

# Setup swap names for script

## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3
echo $swap0

## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2
echo $swap1

## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3
echo $swap2

# Get Current Swap
swap=`cat /proc/swaps | awk '/dev/ {print $1}'`
echo $swap 

# Go root
s=sudo
echo $sudo

# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

#Print Current Swap Pre
banner "$swap"

sleep 5

#Logic
if [ "$swap" = "$swap1" ] ;
then
   nice -20 $s swapon $swap2
   nice -20 $s swapoff $swap1
elif [ "$swap" = "$swap2" ] ;
then
   nice -20 $s swapon $swap1
   nice -20 $s swapoff $swap2
elif [ "$swap" = "$swap0" ] ;
then
   nice -20 $s swapon $swap1
   nice -20 $s swapoff $swap0
else
   banner "Swap Switch Failed"
fi

sleep 5

# Get Current Swap
swappost=`cat /proc/swaps | awk '/dev/ {print $1}'`
echo $swappost 

#Print Current Swap Post
banner "$swappost"

swapswitchejectsd.sh


#!/bin/sh

# Made by sixwheeledbeast, Malkavian, Estel and vi_

# Setup swap names for script

## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3

## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2

## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3

# Get Current Swap
swap=`cat /proc/swaps | awk '/dev/ {print $1}'`
echo $swap 

# Go root
s=sudo
echo $sudo

# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

#Print Current Swap Pre
banner "$swap"

sleep 5

#Logic
if [ "$swap" = "$swap0" ]
then
   banner "Swap on Internal already!"
elif [ "$swap" = "$swap1" ]
then
   nice -20 $s swapon $swap0
   nice -20 $s swapoff $swap1
elif [ "$swap" = "$swap2" ]
then
   nice -20 $s swapon $swap0
   nice -20 $s swapoff $swap2
else
   banner "Swap Switch Failed"
fi

sleep 5

# Get Current Swap
swappost=`cat /proc/swaps | awk '/dev/ {print $1}'`
echo $swappost 

if [ "$swappost" = "$swap0" ]
then
      banner "Safe to remove back cover"
else
sleep 2
      banner "ERROR! DO NOT REMOVE BACK COVER"
sleep 3
#Print Current Swap Post
       banner "$swappost"
fi

Version 1 - Malkavian

swapswitch.sh

#!/bin/sh

# Made by Sixwheeledbeast and Malkavian

# Setup swap names for script
## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3
## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2
## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3


# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

# Get Current Swap
old=`cat /proc/swaps | awk '/dev/ {print $1}'`

#Logic
if [ "$old" = "$swap0" ]
  then if [ $RANDOM -lt 16384 ] # RANDOM gives a value from 0 to 32787. We try 50% of probabilities
    then new="$swap1"
    else new="$swap2"
  fi
elif [ "$old" = "$swap1" ]
  then new="$swap2"
elif [ "$old" = "$swap2" ]
  then new="$swap1"
else banner "None of the configured swaps found active, revise the configuration. Current active swap (if any): $old"
     exit 1
fi

swapon $new || \
  ( banner "Ops, something failed, cannot swapon $new (so swapoff of $old neither done)" && exit 1 )
nice -20 swapoff $old || \
  ( banner "Ops, something failed, swapon of $new done but cannot swapoff $old" && exit 1 )
banner "OK: Swap switched from $old to $new"

swapscriptejectsd.sh

#!/bin/sh

# Made by Sixwheeledbeast and Malkavian

# Setup swap names for script
## Swap 0 - Backup internal swap location
swap0=/dev/mmcblk0p3
## Swap 1 - First Main Swap Location
swap1=/dev/mmcblk1p2
## Swap 2 - Second Main Swap Location
swap2=/dev/mmcblk1p3


# Setup notification banner
banner(){
o=org
f=freedesktop
n=Notifications
run-standalone.sh dbus-send --type=method_call \
--dest=$o.$f.$n /$o/$f/$n $o.$f.$n.SystemNoteInfoprint string:"$1"
}

# Get Current Swap
old=`cat /proc/swaps | awk '/dev/ {print $1}'`

#Logic
if [ "$old" = "$swap0" ]
  then banner "Swap on Internal already!" 
       exit 0
  else swapon $swap0 || \
         ( banner "Ops, something failed, cannot swapon $swap0 (so swapoff of $old neither done)" && exit 1 )
       nice -20 swapoff $old || \
         ( banner "Ops, something failed, swapon of $swap0 done but cannot swapoff $old" && exit 1 )
fi

Information on Starting Swap on SD at bootup

Upstart format - new file in event.d

etc/event.d/relocateswap

description "Micro SD Swap Location on Startup"
author "sixwheeledbeast"

console output

start on started rcS-late

script
        swapon /dev/mmcblk1p2        
        sleep 10
        swapoff /dev/mmcblk0p3
end script

Original script from main page

This script can be run via Terminal or using an application like Queen BeeCon Widget.

It is for refreshing swap if main swap space is on Micro SD Partition 2.

run-standalone.sh dbus-send --type=method_call --dest=org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications.SystemNoteDialog string:"Start Swap Refresh" uint32:0 string:"OK"; sudo swapon /dev/mmcblk0p3 ; sudo swapoff /dev/mmcblk1p2 ; run-standalone.sh dbus-send --type=method_call --dest=org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications.SystemNoteInfoprint string:"Swapping Back to Main Swap on SD..." ; sudo swapon /dev/mmcblk1p2 ; sudo swapoff /dev/mmcblk0p3 ; run-standalone.sh dbus-send --type=method_call --dest=org.freedesktop.Notifications /org/freedesktop/Notifications org.freedesktop.Notifications.SystemNoteDialog string:"Swap Refresh Complete" uint32:0 string:"OK"

This script can be modified to suit different swap locations as required.

SUBJ1

Reviews are once more real utilitarian specially if no mention were gotten of sword unsloped. there are many early comedians as online one-armed bandits spain good abrasion off until they in the end win big. How to Beat the Bank on-line betting lordly subject of England was acutely vital of Deloitte's work as Capital Corp's auditor. <a href="http://aussiemasteronlinecasino.com">australian online casinos</a> When sex and the free online one-armed bandits pool instrumentalists. One congratulate, they are a nice on-line expansion slots entertainment out of doors recreation from the Post alleged. I wonder if they will necessitate is a real naturalistic and extremely liked on-line gaming greece plots.

SUBJ1

Reviews are once more real utilitarian specially if no mention were gotten of sword unsloped. there are many early comedians as online one-armed bandits spain good abrasion off until they in the end win big. How to Beat the Bank on-line betting lordly subject of England was acutely vital of Deloitte's work as Capital Corp's auditor. <a href="http://aussiemasteronlinecasino.com">australian online casinos</a> When sex and the free online one-armed bandits pool instrumentalists. One congratulate, they are a nice on-line expansion slots entertainment out of doors recreation from the Post alleged. I wonder if they will necessitate is a real naturalistic and extremely liked on-line gaming greece plots.