Separate OSD scenarios to multiple files

Currently everything lives in main.yml, the file has become difficult to
read at some point and can be a real mess since we keep adding new
scenarios.
I think we should separate the scenarios into dedicated files and just
do includes in the main.yml file.

Closes: #16

Signed-off-by: Sébastien Han <sebastien.han@enovance.com>

roles/osd/tasks/journal_collocation.yml

@@ -0,0 +1,66 @@
+---
+## SCENARIO 1: JOURNAL AND OSD_DATA ON THE SAME DEVICE
+#
+
+- name: Install dependancies
+  apt: pkg=parted state=present
+  when: ansible_os_family == 'Debian'
+
+- name: Install dependancies
+  yum: name=parted state=present
+  when: ansible_os_family == 'RedHat'
+
+- name: Copy OSD bootstrap key
+  copy: src=fetch/{{ hostvars[groups['mons'][0]]['ansible_hostname'] }}/var/lib/ceph/bootstrap-osd/ceph.keyring dest=/var/lib/ceph/bootstrap-osd/ceph.keyring owner=root group=root mode=600
+  when: cephx
+
+# NOTE (leseb): current behavior of ceph-disk is to fail when the device is mounted "stderr: ceph-disk: Error: Device is mounted: /dev/sdb1"
+# the return code is 1, which makes sense, however ideally if ceph-disk will detect a ceph partition
+# it should exist we rc=0 and don't do anything unless we do something like --force
+# As as a final word, I prefer to keep the partition check instead of running ceph-disk prepare with "ignore_errors: True"
+# I believe it's safer
+#
+
+- name: If partition named 'ceph' exists
+  shell: parted --script {{ item }} print | egrep -sq '^ 1.*ceph'
+  ignore_errors: True
+  with_items: devices
+  register: parted
+  changed_when: False
+
+# Prepare means
+# - create GPT partition
+# - mark the partition with the ceph type uuid
+# - create a file system
+# - mark the fs as ready for ceph consumption
+# - entire data disk is used (one big partition)
+# - a new partition is added to the journal disk (so it can be easily shared)
+#
+
+# NOTE (leseb): the prepare process must be parallelized somehow...
+# if you have 64 disks with 4TB each, this will take a while
+# since Ansible will sequential process the loop
+
+- name: Prepare OSD disk(s)
+  command: ceph-disk prepare {{ item.1 }}
+  when: item.0.rc != 0 and journal_collocation
+  ignore_errors: True
+  with_together:
+    - parted.results
+    - devices
+
+# Activate means:
+# - mount the volume in a temp location
+# - allocate an osd id (if needed)
+# - remount in the correct location /var/lib/ceph/osd/$cluster-$id
+# - start ceph-osd
+#
+
+- name: Activate OSD(s)
+  command: ceph-disk activate {{ item }}1
+  with_items: devices
+  ignore_errors: True
+  changed_when: False
+
+- name: Start and add that the OSD service to the init sequence
+  service: name=ceph state=started enabled=yes

roles/osd/tasks/main.yml

@@ -2,80 +2,11 @@
 ## Deploy Ceph Oject Storage Daemon(s)
 #
 
-- name: Install dependancies
-  apt: pkg=parted state=present
+- include: journal_collocation.yml
+  when: journal_collocation
 
-- name: Copy OSD bootstrap key
-  copy: src=fetch/{{ hostvars[groups['mons'][0]]['ansible_hostname'] }}/var/lib/ceph/bootstrap-osd/ceph.keyring dest=/var/lib/ceph/bootstrap-osd/ceph.keyring owner=root group=root mode=600
-  when: cephx
+- include: raw_journal.yml
+  when: raw_journal
 
-# NOTE (leseb): current behavior of ceph-disk is to fail when the device is mounted "stderr: ceph-disk: Error: Device is mounted: /dev/sdb1"
-# the return code is 1, which makes sense, however ideally if ceph-disk will detect a ceph partition
-# it should exist we rc=0 and don't do anything unless we do something like --force
-# As as a final word, I prefer to keep the partition check instead of running ceph-disk prepare with "ignore_errors: True"
-# I believe it's safer
-#
-
-- name: If partition named 'ceph' exists
-  shell: parted --script {{ item }} print | egrep -sq '^ 1.*ceph'
-  ignore_errors: True
-  with_items: devices
-  register: parted
-  changed_when: False
-
-# Prepare means
-# - create GPT partition
-# - mark the partition with the ceph type uuid
-# - create a file system
-# - mark the fs as ready for ceph consumption
-# - entire data disk is used (one big partition)
-# - a new partition is added to the journal disk (so it can be easily shared)
-#
-
-# NOTE (leseb): the prepare process must be parallelized somehow...
-# if you have 64 disks with 4TB each, this will take a while
-# since Ansible will sequential process the loop
-
-# Scenario 1 without dedicated journal
-- name: Prepare OSD disk(s)
-  command: ceph-disk prepare {{ item.1 }}
-  when: item.0.rc != 0 and journal_collocation
-  ignore_errors: True
-  with_together:
-    - parted.results
-    - devices
-
-# Scenario 2 with dedicated journal
-- name: Prepare OSD disk(s)
-  command: ceph-disk prepare {{ item.1 }} {{ journal_device }}
-  when: item.0.rc != 0 and raw_journal
-  ignore_errors: True
-  with_together:
-    - parted.results
-    - devices
-
-# Scenario 3
-- name: Prepare OSD disk(s)
-  command: ceph-disk prepare {{ item.1 }} {{ item.2 }}
-  when: item.0.rc != 0 and raw_multi_journal
-  ignore_errors: True
-  with_together:
-    - parted.results
-    - devices
-    - raw_journal_devices
-
-# Activate means:
-# - mount the volume in a temp location
-# - allocate an osd id (if needed)
-# - remount in the correct location /var/lib/ceph/osd/$cluster-$id
-# - start ceph-osd
-#
-
-- name: Activate OSD(s)
-  command: ceph-disk activate {{ item }}1
-  ignore_errors: True
-  with_items: devices
-  changed_when: False
-
-- name: Start and add that the OSD service to the init sequence
-  service: name=ceph state=started enabled=yes
+- include: raw_multi_journal.yml
+  when: raw_multi_journal

roles/osd/tasks/raw_journal.yml

@@ -0,0 +1,66 @@
+---
+## SCENARIO 2: SINGLE JOURNAL DEVICE FOR N OSDS
+#
+
+- name: Install dependancies
+  apt: pkg=parted state=present
+  when: ansible_os_family == 'Debian'
+
+- name: Install dependancies
+  yum: name=parted state=present
+  when: ansible_os_family == 'RedHat'
+
+- name: Copy OSD bootstrap key
+  copy: src=fetch/{{ hostvars[groups['mons'][0]]['ansible_hostname'] }}/var/lib/ceph/bootstrap-osd/ceph.keyring dest=/var/lib/ceph/bootstrap-osd/ceph.keyring owner=root group=root mode=600
+  when: cephx
+
+# NOTE (leseb): current behavior of ceph-disk is to fail when the device is mounted "stderr: ceph-disk: Error: Device is mounted: /dev/sdb1"
+# the return code is 1, which makes sense, however ideally if ceph-disk will detect a ceph partition
+# it should exist we rc=0 and don't do anything unless we do something like --force
+# As as a final word, I prefer to keep the partition check instead of running ceph-disk prepare with "ignore_errors: True"
+# I believe it's safer
+#
+
+- name: If partition named 'ceph' exists
+  shell: parted --script {{ item }} print | egrep -sq '^ 1.*ceph'
+  ignore_errors: True
+  with_items: devices
+  register: parted
+  changed_when: False
+
+# Prepare means
+# - create GPT partition
+# - mark the partition with the ceph type uuid
+# - create a file system
+# - mark the fs as ready for ceph consumption
+# - entire data disk is used (one big partition)
+# - a new partition is added to the journal disk (so it can be easily shared)
+#
+
+# NOTE (leseb): the prepare process must be parallelized somehow...
+# if you have 64 disks with 4TB each, this will take a while
+# since Ansible will sequential process the loop
+
+- name: Prepare OSD disk(s)
+  command: ceph-disk prepare {{ item.1 }} {{ raw_journal_device }}
+  when: item.0.rc != 0 and raw_journal
+  ignore_errors: True
+  with_together:
+    - parted.results
+    - devices
+
+# Activate means:
+# - mount the volume in a temp location
+# - allocate an osd id (if needed)
+# - remount in the correct location /var/lib/ceph/osd/$cluster-$id
+# - start ceph-osd
+#
+
+- name: Activate OSD(s)
+  command: ceph-disk activate {{ item }}1
+  with_items: devices
+  ignore_errors: True
+  changed_when: False
+
+- name: Start and add that the OSD service to the init sequence
+  service: name=ceph state=started enabled=yes

roles/osd/tasks/raw_multi_journal.yml

@@ -0,0 +1,67 @@
+---
+## SCENARIO 3: N JOURNAL DEVICES FOR N OSDS
+#
+
+- name: Install dependancies
+  apt: pkg=parted state=present
+  when: ansible_os_family == 'Debian'
+
+- name: Install dependancies
+  yum: name=parted state=present
+  when: ansible_os_family == 'RedHat'
+
+- name: Copy OSD bootstrap key
+  copy: src=fetch/{{ hostvars[groups['mons'][0]]['ansible_hostname'] }}/var/lib/ceph/bootstrap-osd/ceph.keyring dest=/var/lib/ceph/bootstrap-osd/ceph.keyring owner=root group=root mode=600
+  when: cephx
+
+# NOTE (leseb): current behavior of ceph-disk is to fail when the device is mounted "stderr: ceph-disk: Error: Device is mounted: /dev/sdb1"
+# the return code is 1, which makes sense, however ideally if ceph-disk will detect a ceph partition
+# it should exist we rc=0 and don't do anything unless we do something like --force
+# As as a final word, I prefer to keep the partition check instead of running ceph-disk prepare with "ignore_errors: True"
+# I believe it's safer
+#
+
+- name: If partition named 'ceph' exists
+  shell: parted --script {{ item }} print | egrep -sq '^ 1.*ceph'
+  ignore_errors: True
+  with_items: devices
+  register: parted
+  changed_when: False
+
+# Prepare means
+# - create GPT partition
+# - mark the partition with the ceph type uuid
+# - create a file system
+# - mark the fs as ready for ceph consumption
+# - entire data disk is used (one big partition)
+# - a new partition is added to the journal disk (so it can be easily shared)
+#
+
+# NOTE (leseb): the prepare process must be parallelized somehow...
+# if you have 64 disks with 4TB each, this will take a while
+# since Ansible will sequential process the loop
+
+- name: Prepare OSD disk(s)
+  command: ceph-disk prepare {{ item.1 }} {{ item.2 }}
+  when: item.0.rc != 0 and raw_multi_journal
+  ignore_errors: True
+  with_together:
+    - parted.results
+    - devices
+    - raw_journal_devices
+
+# Activate means:
+# - mount the volume in a temp location
+# - allocate an osd id (if needed)
+# - remount in the correct location /var/lib/ceph/osd/$cluster-$id
+# - start ceph-osd
+#
+
+- name: Activate OSD(s)
+  command: ceph-disk activate {{ item }}1
+  with_items: devices
+  ignore_errors: True
+  changed_when: False
+
+- name: Start and add that the OSD service to the init sequence
+  service: name=ceph state=started enabled=yes