lvm_scan: do not overwrite a preexisting /etc/lvm/lvm.conf

diff --git a/modules.d/90lvm/lvm_scan.sh b/modules.d/90lvm/lvm_scan.sh
index 81c48c0..966f909 100755 (executable)
--- a/modules.d/90lvm/lvm_scan.sh
+++ b/modules.d/90lvm/lvm_scan.sh
@@ -14,19 +14,24 @@ if $UDEV_QUEUE_EMPTY >/dev/null 2>&1; then
            echo -n "${f##/tmp/.lvm_scan-} "
        done
        )
-    {
-       echo 'devices {';
-       echo -n '    filter = [ '
-       for dev in $lvmdevs; do
-           printf '"a|^/dev/%s$|", ' $dev;
-       done;
-       echo '"r/.*/" ]';
-       echo 'types = [ "blkext", 1024 ]'
-       echo '}';         
-    } > /etc/lvm/lvm.conf
 
+    if [ ! -e /etc/lvm/lvm.conf ]; then 
+        {
+           echo 'devices {';
+           echo -n '    filter = [ '
+           for dev in $lvmdevs; do
+               printf '"a|^/dev/%s$|", ' $dev;
+           done;
+           echo '"r/.*/" ]';
+           echo 'types = [ "blkext", 1024 ]'
+           echo '}';     
+        } > /etc/lvm/lvm.conf
+       lvmwritten=1
+    fi
     info "Scanning devices $lvmdevs for LVM volume groups $VGS"
     lvm vgscan 2>&1 | vinfo
     lvm vgchange -ay $VGS 2>&1 | vinfo
+    [ "$lvmwritten" ] && rm -f /etc/lvm/lvm.conf
+    unset lvmwritten
 fi