diff --git a/src/orchestrator/input/omnia_config.yml b/src/orchestrator/input/omnia_config.yml
index 17ae4c810c..b39044ad22 100644
--- a/src/orchestrator/input/omnia_config.yml
+++ b/src/orchestrator/input/omnia_config.yml
@@ -186,6 +186,10 @@ slurm_cluster:
 # File path for the values.yml file which will contain the Powerscale driver configuration parameters.
 # csi_powerscale_driver_values_file_path: User need to download values.yaml file and fill required data.
 # Provided the path of the values.yaml file here.
+# csi_powerscale_mount_options: Optional comma-separated NFS mount options applied to
+# PowerScale CSI volumes through the ps01 StorageClass mountOptions. Leave empty to use
+# the kernel defaults. For RHEL 10.x clients that report Input/output errors on PowerScale
+# volumes with the default 1 MiB transfer size, use "rsize=1044480,wsize=1044480".
 # mention configurable values
 
 # - k8s_crio_storage_size: Specifies the disk size allocated for CRI-O container storage.
@@ -224,5 +228,6 @@ service_k8s_cluster:
     enable_powerscale_csi: false
     csi_powerscale_driver_secret_file_path: ""
     csi_powerscale_driver_values_file_path: ""
+    csi_powerscale_mount_options: ""
     enable_k8s_ha: true
     virtual_ip_address: "172.16.107.1"
diff --git a/src/orchestrator/input/storage_config.yml b/src/orchestrator/input/storage_config.yml
index daf735a23c..a5c4e9714b 100644
--- a/src/orchestrator/input/storage_config.yml
+++ b/src/orchestrator/input/storage_config.yml
@@ -47,6 +47,17 @@
 #                   If specified, takes PRIORITY over mount_params profile
 #   - mount_on_oim: Mount this filesystem on the OIM node as well. Optional. Default: false
 #                   Ensure storage is network-accessible from OIM before enabling
+#   - node_nfs_mnt_opts: Mount options for the per-node NFS sub-mounts that Omnia creates
+#                   from the storage entry referenced by nfs_storage_name in omnia_config.yml.
+#                   Optional. Applies to Kubernetes (/var/lib/kubelet, /var/lib/etcd,
+#                   /etc/kubernetes, /var/log/pods, /var/lib/packages) and Slurm/login
+#                   (/etc/slurm, /etc/munge, /var/spool/slurmd, /var/log/slurm, /cert, ...).
+#                   For Kubernetes it is also passed to the nfs-client provisioner.
+#                   Default: "noatime,nolock" (Kubernetes) and "defaults,_netdev" (Slurm)
+#                   PowerScale with RHEL 10.x clients: if Input/output errors occur with the
+#                   default 1 MiB transfer size, set for example
+#                   "noatime,nolock,rsize=1044480,wsize=1044480" (Kubernetes) or
+#                   "defaults,_netdev,rsize=1044480,wsize=1044480" (Slurm)
 #
 # Node-specific bind mounts (node_key and node_mount_point are paired):
 #   - node_key:         Per-node subdirectory isolation variable. Optional
diff --git a/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/omnia_config.json b/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/omnia_config.json
index 5039a3708e..254efa9482 100644
--- a/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/omnia_config.json
+++ b/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/omnia_config.json
@@ -276,6 +276,10 @@
         "csi_powerscale_driver_values_file_path": {
           "$ref": "#/definitions/optionalAbsolutePath"
         },
+        "csi_powerscale_mount_options": {
+          "type": "string",
+          "pattern": "^([A-Za-z0-9,=._@/-]+)?$"
+        },
         "enable_k8s_ha": {
           "type": "boolean"
         },
diff --git a/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/storage_config.json b/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/storage_config.json
index 85dd430b2c..79ffa4ba65 100644
--- a/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/storage_config.json
+++ b/src/orchestrator/plugins/module_utils/orchestrator_validation/schema/storage_config.json
@@ -171,6 +171,9 @@
         "mnt_opts": {
           "$ref": "#/definitions/mountOptions"
         },
+        "node_nfs_mnt_opts": {
+          "$ref": "#/definitions/mountOptions"
+        },
         "dump_freq": {
           "$ref": "#/definitions/dumpFrequency"
         },
diff --git a/src/orchestrator/roles/k8s_config/tasks/create_k8s_config_nfs.yml b/src/orchestrator/roles/k8s_config/tasks/create_k8s_config_nfs.yml
index a08bef336e..867a91d287 100644
--- a/src/orchestrator/roles/k8s_config/tasks/create_k8s_config_nfs.yml
+++ b/src/orchestrator/roles/k8s_config/tasks/create_k8s_config_nfs.yml
@@ -61,6 +61,10 @@
         csi_powerscale_driver_values_file_path: >-
           {{ deployed_service_k8s_cluster.get(
              'csi_powerscale_driver_values_file_path', '') }}
+        csi_powerscale_mount_options: >-
+          {{ (deployed_service_k8s_cluster.get('csi_powerscale_mount_options', '')
+              | default('', true) | string | trim).split(',')
+             | map('trim') | select | list }}
 
     - name: Validate PowerScale CSI input paths
       ansible.builtin.assert:
diff --git a/src/orchestrator/roles/k8s_config/templates/ps_storage_class.j2 b/src/orchestrator/roles/k8s_config/templates/ps_storage_class.j2
index c407073b2e..405660c74d 100644
--- a/src/orchestrator/roles/k8s_config/templates/ps_storage_class.j2
+++ b/src/orchestrator/roles/k8s_config/templates/ps_storage_class.j2
@@ -6,9 +6,15 @@ provisioner: csi-isilon.dellemc.com
 reclaimPolicy: Retain
 allowVolumeExpansion: true
 volumeBindingMode: Immediate
+{% if csi_powerscale_mount_options | default([]) | length > 0 %}
+mountOptions:
+{% for opt in csi_powerscale_mount_options %}
+  - "{{ opt }}"
+{% endfor %}
+{% endif %}
 parameters:
   AccessZone: {{ ps_access_zone }}
   Isipath: {{ ps_isipath }}
   RootClientEnabled: "true"
   AzServiceIP: {{ ps_azserviceip }}
-  csi.storage.k8s.io/fstype: "nfs"
\ No newline at end of file
+  csi.storage.k8s.io/fstype: "nfs"
diff --git a/src/orchestrator/roles/provision_common/tasks/configure_metadata_svc.yml b/src/orchestrator/roles/provision_common/tasks/configure_metadata_svc.yml
index 1f527e56d3..c9e22efb20 100644
--- a/src/orchestrator/roles/provision_common/tasks/configure_metadata_svc.yml
+++ b/src/orchestrator/roles/provision_common/tasks/configure_metadata_svc.yml
@@ -91,6 +91,9 @@
     metadata_svc_nfs_path_openldap: "{{ metadata_slurm_nfs_storage_matches[0].source }}/openldap"
     metadata_svc_slurm_nfs_path: "{{ metadata_slurm_nfs_storage_matches[0].source }}"
     client_mount_path: "{{ metadata_slurm_nfs_storage_matches[0].mount_point }}"
+    slurm_nfs_mnt_opts: >-
+      {{ metadata_slurm_nfs_storage_matches[0].node_nfs_mnt_opts
+         | default(slurm_nfs_default_mnt_opts, true) }}
   when: target_category | default('') == 'slurm'
 
 - name: Set default effective directories for slurm paths
@@ -222,6 +225,11 @@
   ansible.builtin.set_fact:
     k8s_client_mount_path: "{{ metadata_k8s_storage_matches[0].mount_point }}"
     k8s_nfs_server_path: "{{ metadata_k8s_storage_matches[0].source }}"
+    k8s_nfs_mnt_opts: >-
+      {{ metadata_k8s_storage_matches[0].node_nfs_mnt_opts
+         | default(k8s_nfs_default_mnt_opts, true) }}
+    k8s_nfs_custom_mnt_opts: >-
+      {{ metadata_k8s_storage_matches[0].node_nfs_mnt_opts | default('', true) }}
   when: target_category | default('') == 'kubernetes'
 
 - name: Load K8s packages JSON for template variables
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_aarch64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_aarch64.yaml.j2
index 2a7f56de5b..4df9e48c69 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_aarch64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_aarch64.yaml.j2
@@ -237,7 +237,7 @@
         - /usr/local/bin/configure_vast_installation.sh
 {% endif %}
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mount -av
         - rm -f /etc/slurm/slurm.conf /etc/slurm/slurm.conf.example
         - cp /cert/pulp_webserver.crt /etc/pki/ca-trust/source/anchors && update-ca-trust
@@ -274,13 +274,13 @@
         # Add the Slurm SSH child mount after the configured storage root is mounted
         - mkdir -p {{ client_mount_path }}/slurm/ssh
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages /hpc_tools
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -av
 
@@ -390,7 +390,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_x86_64.yaml.j2
index 70e0d6ee20..61ab5f2718 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_compiler_node_x86_64.yaml.j2
@@ -237,7 +237,7 @@
         - /usr/local/bin/configure_vast_installation.sh
 {% endif %}
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mount -av
         - rm -f /etc/slurm/slurm.conf /etc/slurm/slurm.conf.example
         - cp /cert/pulp_webserver.crt /etc/pki/ca-trust/source/anchors && update-ca-trust
@@ -274,13 +274,13 @@
         # Add the Slurm SSH child mount after the configured storage root is mounted
         - mkdir -p {{ client_mount_path }}/slurm/ssh 
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -a
 
@@ -392,7 +392,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_aarch64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_aarch64.yaml.j2
index 3e65a32069..a601d80ad8 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_aarch64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_aarch64.yaml.j2
@@ -193,7 +193,7 @@
         - /usr/local/bin/configure_vast_installation.sh
 {% endif %}
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mount -av
         - rm -f /etc/slurm/slurm.conf /etc/slurm/slurm.conf.example
         - cp /cert/pulp_webserver.crt /etc/pki/ca-trust/source/anchors && update-ca-trust
@@ -230,13 +230,13 @@
         - mkdir -p {{ client_mount_path }}/slurm/ssh
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
         # Additional Slurm login node mounts (excluding cert which was mounted earlier)
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -av
         - /usr/local/bin/check_slurm_controller_status.sh
@@ -326,7 +326,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_x86_64.yaml.j2
index 0ffe8c2f2a..3b6412aeb1 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-login_node_x86_64.yaml.j2
@@ -192,7 +192,7 @@
         - /usr/local/bin/configure_vast_installation.sh
 {% endif %}
         - mkdir -p {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mount -av
         - rm -f /etc/slurm/slurm.conf /etc/slurm/slurm.conf.example
         - cp /cert/pulp_webserver.crt /etc/pki/ca-trust/source/anchors && update-ca-trust
@@ -226,14 +226,14 @@
         - mount -av
         - chmod 1777 /scratch
         # Additional Slurm login node mounts (excluding cert which was mounted earlier)
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -p {{ client_mount_path }}/slurm/ssh
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -av
         - /usr/local/bin/check_slurm_controller_status.sh
@@ -324,7 +324,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_first_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_first_x86_64.yaml.j2
index e6e6ce745e..dcde98249d 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_first_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_first_x86_64.yaml.j2
@@ -406,12 +406,12 @@
 {% if etcd_on_local_disk | default(false) %}
         - /usr/local/bin/etcd-fstab-update.sh
 {% else %}
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/etcd      /var/lib/etcd        nfs noatime,nolock 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/etcd      /var/lib/etcd        nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {% endif %}
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    noatime,nolock     0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }}     0 0" >> /etc/fstab
         - echo "tmpfs   /tmp/crio-storage   tmpfs   size={{ k8s_crio_storage_size }},noatime,nodev,nosuid   0 0" >> /etc/fstab
         - sudo swapoff -a
         - sudo sed -i '/ swap / s/^/#/' /etc/fstab
@@ -896,6 +896,9 @@
               --namespace default --create-namespace \
               --set nfs.server={{ k8s_nfs_server_path.split(':')[0] }} \
               --set nfs.path={{ k8s_nfs_server_path.split(':')[1] }} \
+{% if k8s_nfs_custom_mnt_opts | default('') | length > 0 %}
+              --set "nfs.mountOptions={{ '{' }}{{ k8s_nfs_custom_mnt_opts }}{{ '}' }}" \
+{% endif %}
               --set storageClass.defaultClass=true \
               --set storageClass.reclaimPolicy=Retain
             echo "Waiting for nfs-subdir-external-provisioner pods to appear..."
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_x86_64.yaml.j2
index 6e3c3eb13a..3dc9db97d7 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_control_plane_x86_64.yaml.j2
@@ -302,12 +302,12 @@
 {% if etcd_on_local_disk | default(false) %}
         - /usr/local/bin/etcd-fstab-update.sh
 {% else %}
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/etcd      /var/lib/etcd        nfs noatime,nolock 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/etcd      /var/lib/etcd        nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {% endif %}
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    noatime,nolock     0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }}     0 0" >> /etc/fstab
         - echo "tmpfs   /tmp/crio-storage   tmpfs   size={{ k8s_crio_storage_size }},noatime,nodev,nosuid   0 0" >> /etc/fstab
         - sudo swapoff -a
         - sudo sed -i '/ swap / s/^/#/' /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_node_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_node_x86_64.yaml.j2
index e90fa38dc5..4c0369e398 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_node_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-service_kube_node_x86_64.yaml.j2
@@ -196,10 +196,10 @@
 {% endfor %}
         # K8s NFS mount entries
         - mkdir -pv /tmp/crio-storage {{ k8s_client_mount_path }} /var/lib/kubelet /etc/kubernetes /var/log/pods /var/lib/packages
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs noatime,nolock 0 0" >> /etc/fstab
-        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    noatime,nolock     0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubelet   /var/lib/kubelet     nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/kubernetes   /etc/kubernetes      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/{{ "{{" }} ds.meta_data.instance_data.v1.local_ipv4 {{ "}}" }}/pod-logs   /var/log/pods      nfs {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ k8s_nfs_server_path }}/packages   /var/lib/packages        nfs    {{ k8s_nfs_mnt_opts | default(k8s_nfs_default_mnt_opts) }}     0 0" >> /etc/fstab
         - echo "tmpfs   /tmp/crio-storage   tmpfs   size={{ k8s_crio_storage_size }},noatime,nodev,nosuid   0 0" >> /etc/fstab
         - sudo swapoff -a
         - sudo sed -i '/ swap / s/^/#/' /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_control_node_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_control_node_x86_64.yaml.j2
index 5513c0a3de..e66182315b 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_control_node_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_control_node_x86_64.yaml.j2
@@ -326,7 +326,7 @@
         # DOCA prerequisites - moved early to ensure RDMA is ready before vendor_data mounts
         - mkdir -p {{ client_mount_path }}/slurm/ssh
         - mkdir -p {{ slurm_ctld_log_dir_effective }} {{ slurmdbd_log_dir_effective }} {{ slurm_ctld_pid_dir_effective }} {{ slurmdbd_pid_dir_effective }} {{ slurm_state_save_location_effective }} {% if slurm_sched_log_dir_effective %}{{ slurm_sched_log_dir_effective }} {% endif %}/etc/slurm {{ home_dir }} /etc/my.cnf.d /etc/munge /var/lib/mysql /var/log/mariadb /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mount -av
         - cp /cert/pulp_webserver.crt /etc/pki/ca-trust/source/anchors && update-ca-trust
         - sed -i 's/^gpgcheck=1/gpgcheck=0/' /etc/dnf/dnf.conf
@@ -351,19 +351,19 @@
         - mkdir -pv {{ client_mount_path }}/slurm/ssh
          # Create directories for nfs and mount all
         - mkdir -p {{ slurm_ctld_log_dir_effective }} {{ slurmdbd_log_dir_effective }} {{ slurm_ctld_pid_dir_effective }} {{ slurmdbd_pid_dir_effective }} {{ slurm_state_save_location_effective }} {% if slurm_sched_log_dir_effective %}{{ slurm_sched_log_dir_effective }} {% endif %}/etc/slurm {{ home_dir }} /etc/my.cnf.d /etc/munge /var/lib/mysql /var/log/mariadb /cert /var/log/track /var/lib/packages
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm      /etc/slurm       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/my.cnf.d   /etc/my.cnf.d    nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/mariadb /var/log/mariadb nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_ctld_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm      /etc/slurm       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/my.cnf.d   /etc/my.cnf.d    nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/mariadb /var/log/mariadb nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_ctld_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {% if slurmdbd_log_dir_effective != slurm_ctld_log_dir_effective %}
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurmdbd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurmdbd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {% endif %}
-        - if ! mountpoint -q /var/lib/mysql; then echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/lib/mysql /var/lib/mysql nfs defaults,_netdev 0 0" >> /etc/fstab; fi
-        - if ! mountpoint -q {{ slurm_state_save_location_effective }}; then echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmctld {{ slurm_state_save_location_effective }} nfs defaults,_netdev 0 0" >> /etc/fstab; fi
-        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
+        - if ! mountpoint -q /var/lib/mysql; then echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/lib/mysql /var/lib/mysql nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab; fi
+        - if ! mountpoint -q {{ slurm_state_save_location_effective }}; then echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmctld {{ slurm_state_save_location_effective }} nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab; fi
+        - echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -av
         - chown -R {{ slurm_user }}:{{ slurm_user }} {{ home_dir }}
@@ -392,9 +392,9 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         # TODO: This mount may be redundant, remove this
-        - echo "{{ metadata_svc_nfs_path_openldap }}/ldapuser /home nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/ldapuser /home nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
         - mount -a
         - yes | cp /ldapcerts/* /etc/openldap/certs
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_aarch64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_aarch64.yaml.j2
index 690423e04f..df51db1624 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_aarch64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_aarch64.yaml.j2
@@ -166,13 +166,13 @@
             mkdir -pv {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
 
             echo "[INFO] Updating /etc/fstab with NFS entries for Pulp cert, Slurm and Munge paths"
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 
             chmod {{ file_mode }} /etc/fstab
 
@@ -268,7 +268,7 @@
 
             echo "[INFO] Mounting controller slurm.conf from NFS: {{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm -> $CTLD_SLURM_DIR_MNT"
             mkdir -p "$CTLD_SLURM_DIR_MNT"
-            mount -t nfs "{{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm" "$CTLD_SLURM_DIR_MNT" || {
+            mount -t nfs -o "{{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }}" "{{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm" "$CTLD_SLURM_DIR_MNT" || {
               echo "[WARN] Failed to mount controller slurm.conf directory, falling back to defaults."
               SRUN_RANGE="$DEFAULT_SRUN_RANGE"
               SLURMD_PORT="$DEFAULT_SLURMD_PORT"
@@ -480,7 +480,7 @@
 {% endfor %}
 {% endif %}
         - mkdir -p {{ client_mount_path }}/slurm/ssh
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {# mount_config host_mount_map block removed - incompatible with Pongo2 validation #}
 {# When mount_config bolt-on is needed, implement as a shell script in write_files #}
 {% set fg_swap = metadata_svc_groups_dict.get(functional_group_name, {}).get('swap', {}) %}
@@ -518,7 +518,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir /ldapcerts
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_x86_64.yaml.j2 b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_x86_64.yaml.j2
index 82b72ed928..d172947a75 100644
--- a/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_x86_64.yaml.j2
+++ b/src/orchestrator/roles/provision_common/templates/metadata_svc/ms-group-slurm_node_x86_64.yaml.j2
@@ -199,13 +199,13 @@
             mkdir -pv {{ slurm_slurmd_log_dir_effective }} {{ slurm_slurmd_pid_dir_effective }} {{ slurm_slurmd_spool_dir_effective }} {{ slurm_epilog_dirs_all | join(' ') }} /etc/munge /cert /var/log/track /var/lib/packages
 
             echo "[INFO] Updating /etc/fstab with NFS entries for Pulp cert, Slurm and Munge paths"
-            echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ trackfile_nfs_path }}    /var/log/track       nfs defaults,_netdev 0 0" >> /etc/fstab
-            echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs defaults,_netdev 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/cert  /cert   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/log/slurm  {{ slurm_slurmd_log_dir_effective }}   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/var/spool/slurmd      {{ slurm_slurmd_spool_dir_effective }}       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/slurm/epilog.d     /etc/slurm/epilog.d      nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/$(hostname -s)/etc/munge      /etc/munge       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ trackfile_nfs_path }}    /var/log/track       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
+            echo "{{ metadata_svc_nfs_path }}/packages  /var/lib/packages   nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
             chmod {{ file_mode }} /etc/fstab
 
             echo "[INFO] Mounting all NFS entries from /etc/fstab"
@@ -304,7 +304,7 @@
 
             echo "[INFO] Mounting controller slurm.conf from NFS: {{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm -> $CTLD_SLURM_DIR_MNT"
             mkdir -p "$CTLD_SLURM_DIR_MNT"
-            mount -t nfs "{{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm" "$CTLD_SLURM_DIR_MNT" || {
+            mount -t nfs -o "{{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }}" "{{ metadata_svc_nfs_path }}/{{ ctld_list[0] }}/etc/slurm" "$CTLD_SLURM_DIR_MNT" || {
               echo "[WARN] Failed to mount controller slurm.conf directory, falling back to defaults."
               SRUN_RANGE="$DEFAULT_SRUN_RANGE"
               SLURMD_PORT="$DEFAULT_SLURMD_PORT"
@@ -488,7 +488,7 @@
 {% endfor %}
 {% endif %}
         - mkdir -p {{ client_mount_path }}/slurm/ssh
-        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path }}/ssh {{ client_mount_path }}/slurm/ssh nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
 {# mount_config host_mount_map block removed - incompatible with Pongo2 validation #}
 {# When mount_config bolt-on is needed, implement as a shell script in write_files #}
 {% set fg_swap = metadata_svc_groups_dict.get(functional_group_name, {}).get('swap', {}) %}
@@ -524,7 +524,7 @@
 {% if hostvars['localhost']['openldap_support'] %}
         - /usr/local/bin/update_ldap_conf.sh
         - mkdir -p /ldapcerts || echo "LDAP cert directory already exists or creation failed (non-critical)"
-        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs defaults,_netdev 0 0" >> /etc/fstab
+        - echo "{{ metadata_svc_nfs_path_openldap }}/certs                /ldapcerts       nfs {{ slurm_nfs_mnt_opts | default(slurm_nfs_default_mnt_opts) }} 0 0" >> /etc/fstab
         - mkdir -pv {{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home
         - echo "{{ vast_mount_point }}/{{ openldap_dir_name }}/ldapuser /home  none  bind  0  0" >> /etc/fstab
         - chmod {{ file_mode }} /etc/fstab
diff --git a/src/orchestrator/roles/provision_common/vars/main.yml b/src/orchestrator/roles/provision_common/vars/main.yml
index 3b637a2112..05f064d4cf 100644
--- a/src/orchestrator/roles/provision_common/vars/main.yml
+++ b/src/orchestrator/roles/provision_common/vars/main.yml
@@ -36,6 +36,11 @@ openchami_hostname_vars_path: "{{ nodes_dir }}/hostname.yaml"
 ms_defaults_dest: "{{ metadata_svc_dir }}/ms-defaults.yaml"
 ms_group_common_dest: "{{ metadata_svc_dir }}/ms-group-common.yaml"
 
+# Default options for Omnia-managed per-node NFS sub-mounts.
+# Overridden per storage entry by node_nfs_mnt_opts in storage_config.yml.
+k8s_nfs_default_mnt_opts: "noatime,nolock"
+slurm_nfs_default_mnt_opts: "defaults,_netdev"
+
 # SSH keys
 ssh_key_path: "{{ ansible_user_dir | default('/root') }}/.ssh/oim_rsa.pub"
 ssh_private_key_path: "{{ ansible_user_dir | default('/root') }}/.ssh/oim_rsa"