diff --git a/debian/postinst b/debian/postinst
index 85f2a70a..0f6296c3 100755
--- a/debian/postinst
+++ b/debian/postinst
@@ -8,6 +8,60 @@ set -e
 # done its automatic conffile handling, and all the packages we depend
 # of are already fully installed and configured.
 
+set_lvm_conf() {
+    LVM_CONF_MARKER="# added by pve-manager to avoid scanning"
+
+    # only do these changes once
+    # keep user changes afterwards provided marker is still there..
+    if ! grep -qLF "$LVM_CONF_MARKER" /etc/lvm/lvm.conf; then
+	OLD_VALUE="$(lvmconfig --typeconfig full devices/global_filter)"
+	NEW_VALUE='global_filter=["r|/dev/zd.*|"]'
+
+	export LVM_SUPPRESS_FD_WARNINGS=1
+
+	# check global_filter
+	# keep previous setting from our custom packaging if it is still there
+	if echo "$OLD_VALUE" | grep -qvF 'r|/dev/zd.*|'; then
+	    SET_FILTER=1
+	    BACKUP=1
+	fi
+	# should be the default since bullseye
+	if lvmconfig --typeconfig full devices/scan_lvs | grep -qv 'scan_lvs=0'; then
+	    SET_SCAN_LVS=1
+	    BACKUP=1
+	fi
+	if test -n "$BACKUP"; then
+	    echo "Backing up lvm.conf before setting pve-manager specific settings.."
+	    cp -vb /etc/lvm/lvm.conf /etc/lvm/lvm.conf.bak
+	fi
+	if test -n "$SET_FILTER"; then
+	    echo "Setting 'global_filter' in /etc/lvm/lvm.conf to prevent zvols from being scanned:"
+	    echo "$OLD_VALUE => $NEW_VALUE"
+	    # comment out existing setting
+	    sed -i -e 's/^\([[:space:]]*global_filter[[:space:]]*=\)/#\1/' /etc/lvm/lvm.conf
+	    # add new section with our setting
+	    cat >> /etc/lvm/lvm.conf <<EOF
+devices {
+	 $LVM_CONF_MARKER ZFS zvols
+	 $NEW_VALUE
+}
+EOF
+	fi
+	if test -n "$SET_SCAN_LVS"; then
+	    echo "Adding scan_lvs=0 setting to /etc/lvm/lvm.conf to prevent LVs from being scanned."
+	    # comment out existing setting
+	    sed -i -e 's/^\([[:space:]]*scan_lvs[[:space:]]*=\)/#\1/' /etc/lvm/lvm.conf
+	    # add new section with our setting
+	    cat >> /etc/lvm/lvm.conf <<EOF
+devices {
+	 $LVM_CONF_MARKER LVM volumes
+	 scan_lvs=0
+}
+EOF
+	fi
+    fi
+}
+
 case "$1" in
   triggered)
     # We don't print a status message here, as dpkg already said
@@ -109,6 +163,8 @@ case "$1" in
 	fi
     fi
 
+    set_lvm_conf
+
     if test ! -e /proxmox_install_mode; then
 	# modeled after code generated by dh_start
 	for unit in ${UNITS}; do