progress

qcow2/compress_qcow2_file.sh

@@ -0,0 +1,49 @@
+#!/bin/bash
+
+# ============ R e q u i r e s  package guestfs-tools
+
+if [ "$(id -u)" -ne 0 ]; then
+  echo "This script must be run as root." >&2
+  exit 1
+fi
+
+# ------ 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 $*"
+