Create backup-virsh.sh

backup-virsh/backup-virsh.sh

@@ -0,0 +1,80 @@
+#!/bin/bash
+
+#
+# Name: backup-virsh.sh
+# Author: justinas@eofnet.lt
+# Description: Backups virsh xml machines on target host, It will copy to Elkarbackup only the modified xml files.
+# Use: JOB level -> Pre-Script
+#
+
+URL=`echo $ELKARBACKUP_URL | cut -d ":" -f1`    # user@serverip
+USER="${URL%@*}"                                # user
+HOST="${URL#*@}"                                # host
+DIR=`echo $ELKARBACKUP_URL | cut -d ":" -f2`    # path
+TMP=/tmp/ebvirshbackup
+
+SSHPARAMS="-i /var/lib/elkarbackup/.ssh/id_rsa -o StrictHostKeyChecking=no $ELKARBACKUP_SSH_ARGS"
+
+TEST=`ssh $SSHPARAMS $USER@$HOST "test -f /usr/bin/virsh && echo $?"`
+
+if [ ! ${TEST} ]; then
+    echo "[ERROR] virsh binary doesn't exist /usr/bin/virsh on target machine"
+    exit 1
+fi
+
+if [ "$ELKARBACKUP_LEVEL" != "JOB" ]
+then
+    echo "Only allowed at job level" >&2
+    exit 1
+fi
+
+
+if [ "$ELKARBACKUP_EVENT" == "PRE" ]
+then
+    # If backup directory doesn't exist, create it
+    TEST=`ssh $SSHPARAMS $USER@$HOST "test -d $DIR && echo $?"`
+    if [ ! ${TEST} ]; then
+        echo "[INFO] Backup directory $DIR doesn't exist. Creating..."
+        ssh $SSHPARAMS $USER@$HOST "mkdir -p $DIR"
+    fi
+    # If tmp directory doesn't exist, create it
+    TEST=`ssh $SSHPARAMS $USER@$HOST "test -d $TMP && echo $?"`
+    if [ ! ${TEST} ]; then
+        echo "[INFO] TMP directory $TMP doesn't exist. Creating..."
+        ssh $SSHPARAMS $USER@$HOST "mkdir -p $TMP"
+    fi
+    # Get all virsh instances
+    instances=`ssh $SSHPARAMS $USER@$HOST "/usr/bin/virsh list --all --name"`
+    RESULT=$?
+       if [ $RESULT -ne 0 ]; then
+           echo "ERROR: $instances"
+           exit 1
+       else
+          for dom in $instances; do
+          # Doing dump
+          ssh $SSHPARAMS $USER@$HOST "/usr/bin/virsh dumpxml $dom > \"$TMP/$dom.xml\""
+          # If we already have an old version...
+          TEST=`ssh $SSHPARAMS $USER@$HOST "test -f $DIR/$dom.xml && echo $?"`
+            if [ ${TEST} ]; then
+                # Diff
+                #echo "making a diff"
+                TEST=`ssh $SSHPARAMS $USER@$HOST "diff -q <(cat $TMP/$dom.xml|head -n -1) <(cat $DIR/$dom.xml|head -n -1) > /dev/null && echo $?"`
+                #echo "diff result: [$TEST]"
+                # If Diff = false, copy tmp dump file
+                if [ ! ${TEST} ]; then
+                    ssh $SSHPARAMS $USER@$HOST "cp $TMP/$dom.xml $DIR/$dom.xml"
+                    echo "[$dom.xml] Changes detected. New dump saved."
+                else
+                    echo "[$dom.xml] No changes detected. Nothing to save."
+                fi
+            else
+                echo "[$dom.xml] First dump created!"
+                ssh $SSHPARAMS $USER@$HOST "cp $TMP/$dom.xml $DIR/$dom.xml"
+            fi
+
+          done
+       fi
+fi
+
+
+exit 0