diff --git a/launch/src/opendev_launch/mirror_volumes.sh b/launch/src/opendev_launch/mirror_volumes.sh
index c23dfe2275..6142d79071 100644
--- a/launch/src/opendev_launch/mirror_volumes.sh
+++ b/launch/src/opendev_launch/mirror_volumes.sh
@@ -94,15 +94,9 @@ if blkid | grep -q $PV_DEVICE ; then
     exit 1
 fi
 
-# Because images may not have all the things we need.
-# TODO(tonyb): 1) Do we really care about yum here? ;
-#              2) Audit script for other tools perl/parted etc
-#              3) Also other scipts in this dir
-if which apt-get ; then
-    apt-get update && apt-get install -y lvm2
-elif which yum ; then
-    yum -y install lvm2
-fi
+# NOTE: This isn't expected to install any packages but just in case let us
+# list the script requirements here
+apt-get update && apt-get install -y e2fsprogs lvm2 parted perl
 
 set -xeuo pipefail
 
diff --git a/launch/src/opendev_launch/mount_volume.sh b/launch/src/opendev_launch/mount_volume.sh
index 74db995cd2..79c6dd61d7 100644
--- a/launch/src/opendev_launch/mount_volume.sh
+++ b/launch/src/opendev_launch/mount_volume.sh
@@ -18,12 +18,9 @@ DEVICE=$1
 MOUNT_PATH=$2
 FS_LABEL=$3
 
-# Because images may not have all the things we need.
-if which apt-get ; then
-    apt-get update && apt-get install -y lvm2
-elif which yum ; then
-    yum -y install lvm2
-fi
+# NOTE: This isn't expected to install any packages but just in case let us
+# list the script requirements here
+apt-get update && apt-get install -y e2fsprogs lvm2 parted perl
 
 # Sanity check that we don't break anything that already has an fs.
 if ! blkid | grep $DEVICE ; then
@@ -37,6 +34,9 @@ if ! blkid | grep $DEVICE ; then
     tune2fs -i 0 -c 0 /dev/main/$FS_LABEL
 
     # Remove existing fstab entries for this device.
+    # As this script is expected to be run  on a "brand new" server this is
+    # reasonably safe.  If /dev/main/$FS_LABEL already exists lvcreate will
+    # have failed and the script aborted anyway.
     perl -nle "m,/dev/main/$FS_LABEL, || print" -i /etc/fstab
 
     if [ ! -d $MOUNT_PATH ] ; then