Script to generate soft lockups in kernel

encrypt_crypt_test.sh

#!/bin/bash
########################################################################
# This bash script will encypt backups using an unmodified version of
# Cryptsetup.
#
# Usage:
# 
# $ dd if=/dev/zero of=/DS02/test/<backup_file> bs=1M count=<count>
# 
# $ encrypt_stress {iteration} {size} {loopdevice} {backup_file}
#
# loopdevice -> /dev/loopN
# iteration -> N (any number)
# size -> Should be greater than your backup_file size specified in 'GBs'
# backup_file -> Backup file name created to a specified count earlier
# count -> total 1MB blocks for your <backup_file>
########################################################################


name=`basename $0`

if [ $# -ne 4 ] ; then
    echo "usage: $name [ITERATION] [SIZE (in GB)] [loopdevice] [BACKUP_FILE]"
    exit 1
fi

tempfile=`mktemp`
password="TestPassword"
iteration="$1"
size="$2"
loopdevice="$3"
backup="$4"


baseName=`echo $backup | cut -d \. -f 1`
containerName=$baseName".aaa.ribs"
echo $containerName

mountPointName=`echo $containerName".mp"`
echo $mountPointName

containerSize=$((size * 1000000))

COUNTER=1
while [ $COUNTER -le "$iteration" ]; do
    # Set transaction start message
    logger -s `date "+%m/%d/%Y %T"` Encryption Process Beginning for $4

    # Create a container file
    logger -s `date "+%m/%d/%Y %T"` Creating the container for $4...
    dd of=/DS02/test/$containerName bs=1024 count=0 seek=$containerSize
    #dd of=/DS02/test/$containerName if=/dev/zero bs=1024 count=$containerSize
    if [ $? -eq 0 ]  ; then
        logger -s `date "+%m/%d/%Y %T"` Container created for $4!
    else
        logger -s `date "+%m/%d/%Y %T"` Container could not be created for $4!
    fi

    # Acquire a loop device
    #echo "Acquiring loop device..."
    #loopdevice=`/sbin/losetup -f`
    #echo "Loop device acquired: $loopdevice"

    # Attach the loop device to the container
    logger -s `date "+%m/%d/%Y %T"` Attaching the loop device: $3
    /sbin/losetup $loopdevice /DS02/test/$containerName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $3 Attached!
    else
        logger -s `date "+%m/%d/%Y %T"` $3 could not be attached!
    fi

    # Attach encryption to the container
    logger -s `date "+%m/%d/%Y %T"` Attaching encryption...
    
    # Use expect to check for Enter Passphrase prompt and enter password
    logger -s `date "+%m/%d/%Y %T"` Using Expect to handle interactive prompt and provide passphrase...
expect <<- DONE
    set timeout 30

    spawn /sbin/cryptsetup -v -c aes-cbc-plain -s 256 -h ripemd160 create $containerName $loopdevice

    expect "?assphrase:*"
    send -- "$password\r"
    send -- "\r"
    expect eof
DONE
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` Encryption Attached to $containerName!
    else
        logger -s `date "+%m/%d/%Y %T"` Encryption could not be attached to $containerName!
    fi

    # Format the container
    logger -s `date "+%m/%d/%Y %T"` Formatting the container: $containerName...
    /sbin/mke2fs -v -m 0 /dev/mapper/$containerName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $containerName formatted!
    else
        logger -s `date "+%m/%d/%Y %T"` $containerName could not be formatted!
    fi

    # Mount the container file as a read-write filesystem
    logger -s `date "+%m/%d/%Y %T"` Creating mount point: $mountPointName...
    mkdir -p /DS02/test/ribs/$mountPointName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $mountPointName created! Mounting $containerName...
    else
        logger -s `date "+%m/%d/%Y %T"` $mountPointName could not be created! Unable to mount $containerName!
    fi
    mount -v -w -t ext2 /dev/mapper/$containerName /DS02/test/ribs/$mountPointName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $containerName Mounted!
    else
        logger -s `date "+%m/%d/%Y %T"` $containerName could not be mounted!
    fi

    # Move the backup to the encrypted container
    logger -s `date "+%m/%d/%Y %T"` Moving $backup to encrypted container: $containerName...
    cp -v /DS02/test/$backup /DS02/test/ribs/$mountPointName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $backup copied to $containerName!
    else
        logger -s `date "+%m/%d/%Y %T"` $backup could not be copied to $containerName!
    fi

    # Delete the copied backup from the encrypted container
    logger -s `date "+%m/%d/%Y %T"` Removing $backup from $containerName...
    rm -f /DS02/test/ribs/$mountPointName/$backup
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $backup was deleted from $containerName!
    else
        logger -s `date "+%m/%d/%Y %T"` $backup could not be deleted from $containerName!
    fi

    # Unmount the container
    logger -s `date "+%m/%d/%Y %T"` Unmounting $containerName...
    umount -v /DS02/test/ribs/$mountPointName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $containerName unmounted!
    else
        logger -s `date "+%m/%d/%Y %T"` $containerName could not be unmounted!
    fi

    # Detach encryption
    logger -s `date "+%m/%d/%Y %T"` Detaching cryptsetup from $containerName...
    /sbin/cryptsetup remove $containerName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` Encryption Detached from $containerName!
    else
        logger -s `date "+%m/%d/%Y %T"` Encryption could not be detached from $containerName!
    fi

    # Detach the loop device
    logger -s `date "+%m/%d/%Y %T"` Detaching the loop device: $loopdevice...
    /sbin/losetup -d $loopdevice
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $loopdevice detached!
    else
        logger -s `date "+%m/%d/%Y %T"` $loopdevice could not be detached!
    fi

    # Remove mount point
    logger -s `date "+%m/%d/%Y %T"` Removing $mountPointName...
    rm -R /DS02/test/ribs/$mountPointName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $mountPointName removed!
    else
        logger -s `date "+%m/%d/%Y %T"` $mountPointName could not be removed!
    fi

    # Remove container
    logger -s `date "+%m/%d/%Y %T"` Removing $containerName
    rm /DS02/test/$containerName
    if [ $? -eq 0 ] ; then
        logger -s `date "+%m/%d/%Y %T"` $containerName removed!
    else
        logger -s `date "+%m/%d/%Y %T"` $containerName could not be removed!
    fi

    let COUNTER=COUNTER+1
done