diff --git a/chart/Chart.yaml b/chart/Chart.yaml
index c04f908..e3d1122 100644
--- a/chart/Chart.yaml
+++ b/chart/Chart.yaml
@@ -1,7 +1,7 @@
 apiVersion: v1
 name: longhorn
-version: 1.2.4
-appVersion: v1.2.4
+version: 1.2.5-rc1
+appVersion: v1.2.5-rc1
 kubeVersion: ">=1.18.0-0"
 description: Longhorn is a distributed block storage system for Kubernetes.
 keywords:
diff --git a/chart/values.yaml b/chart/values.yaml
index 08a4854..c566ca9 100644
--- a/chart/values.yaml
+++ b/chart/values.yaml
@@ -25,13 +25,13 @@ image:
   longhorn:
     engine:
       repository: longhornio/longhorn-engine
-      tag: v1.2.4
+      tag: v1.2.5-rc1
     manager:
       repository: longhornio/longhorn-manager
-      tag: v1.2.4
+      tag: v1.2.5-rc1
     ui:
       repository: longhornio/longhorn-ui
-      tag: v1.2.4
+      tag: v1.2.5-rc1
     instanceManager:
       repository: longhornio/longhorn-instance-manager
       tag: v1_20220303
diff --git a/deploy/longhorn-images.txt b/deploy/longhorn-images.txt
index 1fc6a3a..530c7f6 100644
--- a/deploy/longhorn-images.txt
+++ b/deploy/longhorn-images.txt
@@ -4,8 +4,8 @@ longhornio/csi-resizer:v1.2.0
 longhornio/csi-snapshotter:v3.0.3
 longhornio/csi-node-driver-registrar:v2.3.0
 longhornio/backing-image-manager:v2_20210820
-longhornio/longhorn-engine:v1.2.4
+longhornio/longhorn-engine:v1.2.5-rc1
 longhornio/longhorn-instance-manager:v1_20220303
-longhornio/longhorn-manager:v1.2.4
+longhornio/longhorn-manager:v1.2.5-rc1
 longhornio/longhorn-share-manager:v1_20211020
-longhornio/longhorn-ui:v1.2.4
+longhornio/longhorn-ui:v1.2.5-rc1
diff --git a/deploy/longhorn.yaml b/deploy/longhorn.yaml
index fa81d7d..ad9e535 100644
--- a/deploy/longhorn.yaml
+++ b/deploy/longhorn.yaml
@@ -948,7 +948,7 @@ spec:
     spec:
       containers:
       - name: longhorn-manager
-        image: longhornio/longhorn-manager:v1.2.4
+        image: longhornio/longhorn-manager:v1.2.5-rc1
         imagePullPolicy: IfNotPresent
         securityContext:
           privileged: true
@@ -957,7 +957,7 @@ spec:
         - -d
         - daemon
         - --engine-image
-        - longhornio/longhorn-engine:v1.2.4
+        - longhornio/longhorn-engine:v1.2.5-rc1
         - --instance-manager-image
         - longhornio/longhorn-instance-manager:v1_20220303
         - --share-manager-image
@@ -965,7 +965,7 @@ spec:
         - --backing-image-manager-image
         - longhornio/backing-image-manager:v2_20210820
         - --manager-image
-        - longhornio/longhorn-manager:v1.2.4
+        - longhornio/longhorn-manager:v1.2.5-rc1
         - --service-account
         - longhorn-service-account
         ports:
@@ -1079,7 +1079,7 @@ spec:
     spec:
       containers:
       - name: longhorn-ui
-        image: longhornio/longhorn-ui:v1.2.4
+        image: longhornio/longhorn-ui:v1.2.5-rc1
         imagePullPolicy: IfNotPresent
         volumeMounts:
         - name : nginx-cache
@@ -1147,18 +1147,18 @@ spec:
     spec:
       initContainers:
         - name: wait-longhorn-manager
-          image: longhornio/longhorn-manager:v1.2.4
+          image: longhornio/longhorn-manager:v1.2.5-rc1
           command: ['sh', '-c', 'while [ $(curl -m 1 -s -o /dev/null -w "%{http_code}" http://longhorn-backend:9500/v1) != "200" ]; do echo waiting; sleep 2; done']
       containers:
         - name: longhorn-driver-deployer
-          image: longhornio/longhorn-manager:v1.2.4
+          image: longhornio/longhorn-manager:v1.2.5-rc1
           imagePullPolicy: IfNotPresent
           command:
           - longhorn-manager
           - -d
           - deploy-driver
           - --manager-image
-          - longhornio/longhorn-manager:v1.2.4
+          - longhornio/longhorn-manager:v1.2.5-rc1
           - --manager-url
           - http://longhorn-backend:9500/v1
           env:
diff --git a/scripts/environment_check.sh b/scripts/environment_check.sh
index 70ae982..74795d0 100755
--- a/scripts/environment_check.sh
+++ b/scripts/environment_check.sh
@@ -1,18 +1,123 @@
 #!/bin/bash
 
-dependencies() {
+export RED='\x1b[0;31m'
+export GREEN='\x1b[38;5;22m'
+export CYAN='\x1b[36m'
+export YELLOW='\x1b[33m'
+export NO_COLOR='\x1b[0m'
+
+if [ -z "${LOG_TITLE}" ]; then
+  LOG_TITLE=''
+fi
+if [ -z "${LOG_LEVEL}" ]; then
+  LOG_LEVEL="INFO"
+fi
+
+debug() {
+  if [[ "${LOG_LEVEL}" == "DEBUG" ]]; then
+    local log_title
+    if [ -n "${LOG_TITLE}" ]; then
+     log_title="(${LOG_TITLE})"
+    else
+     log_title=''
+    fi
+    echo -e "${GREEN}[DEBUG]${log_title} ${NO_COLOR}$1"
+  fi
+}
+
+info() {
+  if [[ "${LOG_LEVEL}" == "DEBUG" ]] ||\
+     [[ "${LOG_LEVEL}" == "INFO" ]]; then
+    local log_title
+    if [ -n "${LOG_TITLE}" ]; then
+     log_title="(${LOG_TITLE})"
+    else
+     log_title=''
+    fi
+    echo -e "${CYAN}[INFO] ${log_title} ${NO_COLOR}$1"
+  fi
+}
+
+warn() {
+  if [[ "${LOG_LEVEL}" == "DEBUG" ]] ||\
+     [[ "${LOG_LEVEL}" == "INFO" ]] ||\
+     [[ "${LOG_LEVEL}" == "WARN" ]]; then
+    local log_title
+    if [ -n "${LOG_TITLE}" ]; then
+     log_title="(${LOG_TITLE})"
+    else
+     log_title=''
+    fi
+    echo -e "${YELLOW}[WARN] ${log_title} ${NO_COLOR}$1"
+  fi
+}
+
+error() {
+  if [[ "${LOG_LEVEL}" == "DEBUG" ]] ||\
+     [[ "${LOG_LEVEL}" == "INFO" ]] ||\
+     [[ "${LOG_LEVEL}" == "WARN" ]] ||\
+     [[ "${LOG_LEVEL}" == "ERROR" ]]; then
+    local log_title
+    if [ -n "${LOG_TITLE}" ]; then
+     log_title="(${LOG_TITLE})"
+    else
+     log_title=''
+    fi
+    echo -e "${RED}[ERROR]${log_title} ${NO_COLOR}$1"
+  fi
+}
+
+detect_node_os()
+{
+  local pod="$1"
+
+  OS=`kubectl exec -it $pod -- nsenter --mount=/proc/1/ns/mnt -- bash -c 'grep -E "^ID_LIKE=" /etc/os-release | cut -d= -f2'`
+  if [[ -z "${OS}" ]]; then
+    OS=`kubectl exec -it $pod -- nsenter --mount=/proc/1/ns/mnt -- bash -c 'grep -E "^ID=" /etc/os-release | cut -d= -f2'`
+  fi
+  echo "$OS"
+}
+
+set_packages_and_check_cmd()
+{
+  case $OS in
+  *"debian"* | *"ubuntu"* )
+    CHECK_CMD='dpkg -l | grep -w'
+    PACKAGES=(nfs-common open-iscsi)
+    ;;
+  *"centos"* | *"fedora"* | *"rocky"* | *"ol"* )
+    CHECK_CMD='rpm -q'
+    PACKAGES=(nfs-utils iscsi-initiator-utils)
+    ;;
+  *"suse"* )
+    CHECK_CMD='rpm -q'
+    PACKAGES=(nfs-client open-iscsi)
+    ;;
+  *)
+    CHECK_CMD=''
+    PACKAGES=()
+    warn "Stop the environment check because '$OS' is not supported in the environment check script."
+    exit 1
+    ;;
+   esac
+}
+
+check_dependencies() {
   local targets=($@)
+
   local allFound=true
   for ((i=0; i<${#targets[@]}; i++)); do
     local target=${targets[$i]}
     if [ "$(which $target)" == "" ]; then
       allFound=false
-      echo Not found: $target
+      error "Not found: $target"
     fi
   done
   if [ "$allFound" == "false" ]; then
-    echo "Please install missing dependencies."
+    error "Please install missing dependencies."
     exit 2
+  else
+    info "Required dependencies are installed."
   fi
 }
 
@@ -33,9 +138,10 @@ spec:
       labels:
         app: longhorn-environment-check
     spec:
+      hostPID: true
       containers:
       - name: longhorn-environment-check
-        image: busybox
+        image: alpine:3.12
         args: ["/bin/sh", "-c", "sleep 1000000000"]
         volumeMounts:
         - name: mountpoint
@@ -48,14 +154,14 @@ spec:
         hostPath:
             path: /tmp/longhorn-environment-check
 EOF
-  kubectl create -f $TEMP_DIR/environment_check.yaml
+  kubectl create -f $TEMP_DIR/environment_check.yaml > /dev/null
 }
 
 cleanup() {
-  echo "cleaning up..."
-  kubectl delete -f $TEMP_DIR/environment_check.yaml
+  info "Cleaning up longhorn-environment-check pods..."
+  kubectl delete -f $TEMP_DIR/environment_check.yaml > /dev/null
   rm -rf $TEMP_DIR
-  echo "clean up complete"
+  info "Cleanup completed."
 }
 
 wait_ds_ready() {
@@ -65,16 +171,16 @@ wait_ds_ready() {
     local desiredNumberScheduled=$(echo $ds | jq .status.desiredNumberScheduled)
 
     if [ "$desiredNumberScheduled" == "$numberReady" ] && [ "$desiredNumberScheduled" != "0" ]; then
-      echo "all pods ready ($numberReady/$desiredNumberScheduled)"
+      info "All longhorn-environment-check pods are ready ($numberReady/$desiredNumberScheduled)."
       return
     fi
 
-    echo "waiting for pods to become ready ($numberReady/$desiredNumberScheduled)"
+    info "Waiting for longhorn-environment-check pods to become ready ($numberReady/$desiredNumberScheduled)..."
     sleep 3
   done
 }
 
-validate_ds() {
+check_mount_propagation() {
   local allSupported=true
   local pods=$(kubectl -l app=longhorn-environment-check get po -o json)
 
@@ -88,25 +194,101 @@ validate_ds() {
 
     if [ "$mountPropagation" != "Bidirectional" ]; then
       allSupported=false
-      echo "node $nodeName: MountPropagation DISABLED"
+      error "node $nodeName: MountPropagation is disabled"
     fi
   done
 
   if [ "$allSupported" != "true" ]; then
-    echo
-    echo "  MountPropagation is disabled on at least one node."
-    echo "  As a result, CSI driver and Base image cannot be supported."
-    echo
+    error "MountPropagation is disabled on at least one node. As a result, CSI driver and Base image cannot be supported."
     exit 1
   else
-    echo -e "\n  MountPropagation is enabled!\n"
+    info "MountPropagation is enabled."
   fi
 }
 
-dependencies kubectl jq mktemp
+check_package_installed() {
+  local pods=$(kubectl get pods -o name | grep longhorn-environment-check)
+
+  local allFound=true
+
+  for pod in ${pods}; do
+    OS=`detect_node_os $pod`
+    if [ x"$OS" == x"" ]; then
+      error "Unable to detect OS on node $node."
+      exit 2
+    fi
+
+    set_packages_and_check_cmd "$OS"
+
+    for ((i=0; i<${#PACKAGES[@]}; i++)); do
+      local package=${PACKAGES[$i]}
+
+      kubectl exec -it $pod -- nsenter --mount=/proc/1/ns/mnt -- timeout 30 bash -c "$CHECK_CMD $package" > /dev/null 2>&1
+      if [ $? != 0 ]; then
+        allFound=false
+        node=`kubectl get ${pod} --no-headers -o=custom-columns=:.spec.nodeName`
+        error "$package is not found in $node."
+      fi
+    done
+  done
+
+  if [ "$allFound" == "false" ]; then
+    error "Please install missing packages."
+    exit 2
+  else
+    info "Required packages are installed."
+  fi
+}
+
+check_multipathd() {
+  local pods=$(kubectl get pods -o name | grep longhorn-environment-check)
+  local allNotFound=true
+
+  for pod in ${pods}; do
+    kubectl exec -t $pod -- nsenter --mount=/proc/1/ns/mnt -- bash -c "systemctl status --no-pager multipathd.service" > /dev/null 2>&1
+    if [ $? = 0 ]; then
+      allNotFound=false
+      node=`kubectl get ${pod} --no-headers -o=custom-columns=:.spec.nodeName`
+      warn "multipathd is running on $node."
+    fi
+  done
+
+  if [ "$allNotFound" == "false" ]; then
+    warn "multipathd would probably result in the Longhorn volume mount failure. Please refer to https://longhorn.io/kb/troubleshooting-volume-with-multipath for more information."
+  fi
+}
+
+check_iscsid() {
+  local pods=$(kubectl get pods -o name | grep longhorn-environment-check)
+  local allFound=true
+
+  for pod in ${pods}; do
+    kubectl exec -t $pod -- nsenter --mount=/proc/1/ns/mnt -- bash -c "systemctl status --no-pager iscsid.service" > /dev/null 2>&1
+
+    if [ $? != 0 ]; then
+      allFound=false
+      node=`kubectl get ${pod} --no-headers -o=custom-columns=:.spec.nodeName`
+      error "iscsid is not running on $node."
+    fi
+  done
+
+  if [ "$allFound" == "false" ]; then
+    exit 2
+  fi
+}
+
+DEPENDENCIES=(kubectl jq mktemp)
+check_dependencies ${DEPENDENCIES[@]}
+
 TEMP_DIR=$(mktemp -d)
+
 trap cleanup EXIT
 create_ds
 wait_ds_ready
-validate_ds
+check_package_installed
+check_iscsid
+check_multipathd
+check_mount_propagation
+
 exit 0
+
diff --git a/uninstall/uninstall.yaml b/uninstall/uninstall.yaml
index 4a1665d..52062a5 100644
--- a/uninstall/uninstall.yaml
+++ b/uninstall/uninstall.yaml
@@ -101,7 +101,7 @@ spec:
     spec:
       containers:
       - name: longhorn-uninstall
-        image: longhornio/longhorn-manager:v1.2.4
+        image: longhornio/longhorn-manager:v1.2.5-rc1
         imagePullPolicy: IfNotPresent
         securityContext:
           privileged: true