Use hostname for VG name

Vagrantfile

@@ -22,7 +22,7 @@ Vagrant.configure("2") do |config|
     mailserver.vm.provision "shell" do |shell|
       shell.inline = <<-SHELL
         apt-get install -y lvm2
-        vgcreate vg_data /dev/vdb
+        vgcreate vg_$HOSTNAME /dev/vdb
       SHELL
     end
   end

roles/mailserver_dovecot/tasks/main.yml

@@ -12,7 +12,7 @@
 - name: Create a LV for /var/vmail
   become: true
   community.general.lvol:
-    vg: vg_data
+    vg: "vg_{{ ansible_hostname }}"
     lv: vmail
     state: present
     size: 5g
@@ -21,7 +21,7 @@
 - name: Format vmail LV to ext4
   become: true
   community.general.filesystem:
-    dev: /dev/mapper/vg_data-vmail
+    dev: "/dev/mapper/vg_{{ ansible_hostname }}-vmail"
     fstype: ext4
     resizefs: true
     state: present
@@ -29,7 +29,7 @@
 - name: Mount /var/vmail
   become: true
   ansible.posix.mount:
-    src: /dev/mapper/vg_data-vmail
+    src: "/dev/mapper/vg_{{ ansible_hostname }}-vmail"
     path: /var/vmail
     state: mounted
     fstype: ext4