initial

backup_vm.sh

@@ -0,0 +1,39 @@
+#!/bin/bash
+echo Starting $0 $*
+
+VmName=${1}
+
+# ---------------------------------------------------
+# Cronjob requires explicit connection to local server
+# ---------------------------------------------------
+VirshCmd="/usr/bin/virsh -c qemu:///system"
+
+if  [ "${VmName}" == "" ]
+then
+    echo "Usage: $0 <VM Domain Name>"
+    exit 1
+fi
+
+Today=$(date +%Y%m%d)
+
+BackupDir=/localdisk/backup/qcow2
+GuestQcow2Files=$(${VirshCmd} domblklist ${VmName} | grep qcow2 | awk '{print $2}')
+
+Cmd="mkdir -p ${BackupDir}"
+echo ${Cmd} && eval ${Cmd}
+
+Cmd="${VirshCmd} suspend ${VmName}"
+echo ${Cmd} && eval ${Cmd}
+
+for qcow2_file in ${GuestQcow2Files}
+do
+    Cmd="cp ${qcow2_file} ${BackupDir}/${Today}.$(basename ${qcow2_file})"
+    echo ${Cmd} && eval ${Cmd}
+done
+
+Cmd="${VirshCmd} resume ${VmName}"
+echo ${Cmd} && eval ${Cmd}
+
+echo "$0 Done."
+
+

compress_qcow2.sh

@@ -0,0 +1,68 @@
+#!/bin/bash
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "This script must be run as root." >&2
+  exit 1
+fi
+
+# ------ Settings
+Qcow2Dir=/localdisk/backup/qcow2
+ShrunkDir=/opt/vm_drive/shrunk
+TmpDir=/localdisk/tmp
+
+mkdir -p ${ShrunkDir}
+mkdir -p ${TmpDir}
+# ------ Settings
+
+
+Qcow2Files=$(ls -t ${Qcow2Dir}/*.qcow2)
+echo "Files to compress: ${Qcow2Files}"
+
+for file in ${Qcow2Files}
+do 
+    echo "Compressing file ${file}..."
+    SparseFile="${ShrunkDir}/$(basename ${file}).sparse"
+    ShrunkFile="${ShrunkDir}/$(basename ${file}).shrunk"
+    if [ -f ${ShrunkFile} ]
+    then
+	echo Shrunk file ${ShrunkFile} exists. Skipping...
+        continue
+    fi
+    Cmd="/usr/bin/virt-sparsify"
+    Cmd="${Cmd} --check-tmpdir=continue"
+    Cmd="${Cmd} --tmp=${TmpDir}"
+    Cmd="${Cmd} -q"
+    Cmd="${Cmd} ${file} ${SparseFile}"
+    Cmd="${Cmd} && /usr/bin/qemu-img convert"
+    Cmd="${Cmd} -c"
+    Cmd="${Cmd} -O qcow2"
+    Cmd="${Cmd} ${SparseFile} ${ShrunkFile}"
+    echo ${Cmd}
+    eval ${Cmd}
+
+    if [ ${?} -ne 0 ]
+    then
+        echo "Compression failed. Removing ${ShrunkFile}"
+        rm ${ShrunkFile}
+    else
+        filesz=$(stat -c %s ${file})
+        cfilesz=$(stat -c %s ${ShrunkFile})
+
+        ratio=$((cfilesz * 100 / filesz))
+        echo "Compression is successful. Compression ratio is ${ratio}%"
+        rm ${SparseFile}
+
+        Cmd="chown oleg:oleg ${ShrunkFile}"
+        echo ${Cmd}
+        eval ${Cmd}
+        ##
+        GuestFile="${ShrunkFile#*.}"
+        GuestFile="${GuestFile%.shrunk}"
+        Cmd="ln -snf ${ShrunkFile} /opt/vm_drive/${GuestFile}"
+        echo ${Cmd}
+        eval ${Cmd}
+    fi
+done
+    
+echo "Done $0 $*"
+

compress_qcow2_file.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+# ------ Settings
+TmpDir=/localdisk/tmp
+
+# ------ Settings
+
+mkdir -p ${TmpDir}
+file=${1}
+out_file=${2}
+
+SparseFile="${out_file}.sparse"
+ShrunkFile="${out_file}.shrunk"
+
+echo "Compressing file ${file}..."
+Cmd="/usr/bin/virt-sparsify"
+Cmd="${Cmd} --check-tmpdir=continue"
+Cmd="${Cmd} --tmp=${TmpDir}"
+Cmd="${Cmd} -q"
+Cmd="${Cmd} ${file} ${SparseFile}"
+Cmd="${Cmd} && /usr/bin/qemu-img convert"
+Cmd="${Cmd} -c"
+Cmd="${Cmd} -O qcow2"
+Cmd="${Cmd} ${SparseFile} ${ShrunkFile}"
+echo ${Cmd}
+eval ${Cmd}
+
+if [ ${?} -ne 0 ]
+then
+    echo "Compression failed. Removing ${ShrunkFile}"
+    rm ${ShrunkFile}
+else
+    filesz=$(stat -c %s ${file})
+    cfilesz=$(stat -c %s ${ShrunkFile})
+
+    ratio=$((cfilesz * 100 / filesz))
+    echo "Compression is successful. Compression ratio is ${ratio}%"
+    rm ${SparseFile}
+fi
+    
+echo "Done $0 $*"
+