Specify /run partition size

add resize_run_partition option, which enables specifying /run partition size
where is default partition of pyxis `runtime_path`, used to store squashfs file temporarily

In the case a docker image is bigger than the partition then slurm job fails.

Signed-off-by: Seyong Um <seyong.um@hyundai.com>

config.example/group_vars/slurm-cluster.yml

@@ -179,6 +179,12 @@ slurm_install_enroot: true
 slurm_install_pyxis: true
 slurm_pyxis_version: 0.11.1
 
+# /run is default partition of pyxis runtime_path
+resize_run_partition: false
+
+# /run tmpfs size. ubuntu default is 10%
+pyxis_run_tmpfs_size: 50%
+
 ################################################################################
 # Node Health Check                                                            #
 ################################################################################

roles/pyxis/defaults/main.yml

@@ -12,3 +12,9 @@ pyxis_ubuntu_deps:
 
 pyxis_el_deps:
 - "util-linux"
+
+# /run is default partition of pyxis runtime_path
+resize_run_partition: false
+
+# /run tmpfs size. ubuntu default is 10% of physical memory
+pyxis_run_tmpfs_size: 50%

roles/pyxis/tasks/main.yml

@@ -31,3 +31,15 @@
   include_tasks: pyxis.yml
   when: slurm_install_pyxis
   tags: pyxis
+
+# Resize /run temporary file system, which is used to import docker image.
+#  - Default pyxis runtime_path is: /run/pyxis
+# If image is bigger than the file system, the importing will be failed
+- name: resize /run partition
+  mount:
+    name: /run
+    src: tmpfs
+    opts: size={{ pyxis_run_tmpfs_size }}
+    fstype: tmpfs
+    state: mounted
+  when: resize_run_partition