Add rename-vg.sh

rename-vg.sh

@@ -0,0 +1,54 @@
+#!/bin/bash
+# Script per rinominare i volumes group su VM Debian
+# Autore: Mattia Tadini
+# Nome File: rename-vg.sh
+# Revisione: 1.0
+
+# Must be run with root permissions
+# sudo will be sufficient
+if [ "$(id -u)" -ne 0 ]; then
+   echo "This script must be run as root" 1>&2
+   exit 1
+fi
+
+# Ask for new hostname $newhost
+echo Set a New Volume Group  Name:
+read newhostname -p "Enter new hostname: "
+#oldhostname=$(cat /etc/hostname)
+
+echo Changing LVM names
+# ${var//-} syntax removes all dashes from the name simplifying the
+# requirement to use a double-dash in some places to escape the dash
+newvg=${newhostname//-}
+
+# Find the volume group that root is in
+vg=$(lvdisplay -C | awk '$1=="root" {print $2}')
+echo "old vg name: " $vg
+echo "new vg name: " $newvg
+if [[ ${vg} == *"-"* ]]; then
+    # has dashes in current name
+    vgrename ${vg} ${newhostname//-}
+    vg=${vg//-/--}
+    sed -i "s/${vg}/${newvg}/g" /etc/fstab
+    sed -i "s/${vg}/${newvg}/g" /boot/grub/grub.cfg
+    sed -i "s/${vg}/${newvg}/g" /etc/initramfs-tools/conf.d/resume
+else
+    # no dashes in current name
+    vgrename ${vg} ${newvg}
+    sed -i "s/${vg}/${newvg}/g" /etc/fstab
+    sed -i "s/${vg}/${newvg}/g" /boot/grub/grub.cfg
+    sed -i "s/${vg}/${newvg}/g" /etc/initramfs-tools/conf.d/resume
+fi
+
+#check files
+echo fstab update:
+grep ${newvg} /etc/fstab
+
+echo grub.cfg update:
+grep ${newvg} /boot/grub/grub.cfg
+
+echo resume update:
+grep ${newvg} /etc/initramfs-tools/conf.d/resume
+
+echo update initramfs
+update-initramfs -c -k all