Merge pull request #306 from tdawson/2015-06-partition

Expand partition and filesystem to use entire disk.

4 files changed, 136 insertions, 0 deletions

diff --git a/roles/openshift_expand_partition/README.md b/roles/openshift_expand_partition/README.md
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+# openshift_expand_partition
+
+This role is useful to expand a partition, and it's file system to
+fully utilize the disk it is on.  It does this by first expanding the
+partition, and then expanding the file system on the partition.
+
+## Requirements
+
+* A machine with a disk that is not fully utilized
+
+* cloud-utils-growpart rpm (either installed or avialable via yum)
+
+* The partition you are expanding needs to be at the end of the partition list
+
+## Role Variables
+
+```
+# The following variables are if you want to expand
+#   /dev/xvda3 that has a filesystem xfs
+
+# oep_drive
+# Drive that has the partition we wish to expand.
+oep_drive: "/dev/xvda"
+
+# oep_partition
+# Partition that we wish to expand.
+oep_partition: 3
+
+# oep_file_system
+# What file system is on the partition
+#   Currently only xfs, and ext(2,3,4) are supported
+#   For ext2, ext3, or ext4 just use ext
+oep_file_system: "xfs"
+
+```
+
+## Dependencies
+
+growpart
+
+## Example Playbook
+
+With this playbook, the partition /dev/xvda3 will expand to fill the free
+space on /dev/xvda, and the file system will be expanded to fill the new
+partition space.
+
+    - hosts: mynodes
+      sudo: no
+      remote_user: root
+      gather_facts: no
+      roles:
+        - role: openshift_expand_partition
+          oep_drive: "/dev/xvda"
+          oep_partition: 3
+          oep_file_system: "xfs"
+
+
+## Full example
+
+
+* Create an `inventory` file:
+    ```
+    [mynodes]
+    10.0.0.1
+    10.0.0.2
+    ```
+
+* Create an ansible playbook, say `expandvar.yaml`:
+    ```
+    - hosts: mynodes
+      sudo: no
+      remote_user: root
+      gather_facts: no
+      roles:
+        - role: openshift_expand_partition
+          oep_drive: "/dev/xvda"
+          oep_partition: 3
+          oep_file_system: "xfs"
+
+* Run the playbook:
+    ```
+    ansible-playbook -i inventory expandvar.yml
+    ```
+
+## License
+
+Apache 2.0
diff --git a/roles/openshift_expand_partition/defaults/main.yml b/roles/openshift_expand_partition/defaults/main.yml
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+---
+# oep_drive
+# Drive that has the partition we wish to expand.
+oep_drive: "/dev/xvda"
+
+# oep_partition
+# Partition that we wish to expand.
+oep_partition: 3
+
+# oep_partition_mount_point
+# Where the partition is mounted
+oep_partition_mount_point: /var
+
+# oep_file_system
+# What file system is on the partition
+#   Currently only xfs, and ext(2,3,4) are supported
+#   For ext2, ext3, or ext4 just use ext
+oep_file_system: "xfs"
diff --git a/roles/openshift_expand_partition/meta/main.yml b/roles/openshift_expand_partition/meta/main.yml
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+---
+galaxy_info:
+  author: Troy Dawson
+  description: Expand partition and filesystem to fill free space on disks.
+  company: Red Hat, Inc.
+  license: license (Apache)
+  min_ansible_version: 1.4
+  platforms:
+  - name: EL
+    versions:
+    - 7
+  - name: Fedora
+    versions:
+    - all
+  categories:
+    - openshift
+    - cloud
diff --git a/roles/openshift_expand_partition/tasks/main.yml b/roles/openshift_expand_partition/tasks/main.yml
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+---
+- name: Ensure growpart is installed
+  yum: pkg=cloud-utils-growpart state=present
+
+- name: Grow the partitions
+  command: "growpart {{oep_drive}} {{oep_partition}}"
+
+- name: Expand the filesystem - xfs
+  command: "xfs_growfs {{oep_drive}}{{oep_partition}}"
+  when: oep_file_system == "xfs"
+
+- name: Expand the filesystem - ext(2,3,4)
+  command: "resize2fs {{oep_drive}}{{oep_partition}}"
+  when: oep_file_system == "ext"