progress

2026-06-24 19:52:27 +00:00
parent 213ab32665
commit 3385ffb33a
7 changed files with 222 additions and 0 deletions
@@ -0,0 +1,77 @@
+#!/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 ${TmpDir}
+# ------ Settings
+
+Qcow2Files=$(find ${Qcow2Dir} -type f -name "*.qcow2" -mtime -1 -print)
+echo "Files to compress:"
+echo ${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 ${SparseFile}
+
+        ## ***************************************************************************
+        ##
+        ## Switching symlink will mask latest changes for future backups
+        ## if VM was not restarted.
+        ## This must be done manually before restarting - pick the latest shrunk
+        ## symlink it and restart VM
+        ##
+        ## ***************************************************************************
+
+        # GuestFile="${ShrunkFile#*.}"
+        # GuestFile="${GuestFile%.shrunk}"
+        # Cmd="ln -snf ${ShrunkFile} /opt/vm_drive/${GuestFile}"
+        # echo ${Cmd}
+        # eval ${Cmd}
+        ##
+        Cmd="chown oleg:oleg ${ShrunkFile}"
+        echo ${Cmd}
+        eval ${Cmd}
+    fi
+done
+    
+echo "Done $0 $*"
+