iscsi_client: readd role, apply to power10 host and switch guests to use it

This re-adds a iscsi_client role we had in iad2 back in in rdu3.
When then apply it to bvmhost-p10-01 to login and use a iscsi lun from
the rdu3 netapp. We then move the buildvm-ppc64le vm's to use this iscsi
volume instead of local storage.

As we reinstall those builders they will use the iscsi volume.

Signed-off-by: Kevin Fenzi <kevin@scrye.com>

inventory/group_vars/buildvm_ppc64le_rdu3

@@ -26,7 +26,7 @@ mem_size: 32768
 num_cpus: 8
 source_registry: "registry.fedoraproject.org"
 virt_install_command: "{{ virt_install_command_aarch64_one_nic_unsafe }}"
-volgroup: /dev/vg_guests
+volgroup: /dev/vg_fedora_ppc64le_builders
 
 notes: |
   Koji service employs a set of machines to build packages for the Fedora project. This playbook builds vm builders.

playbooks/groups/virthost.yml

@@ -50,6 +50,7 @@
   - virthost
   - {role: linux-system-roles.nbde_client, tags: ['nbde_client'], when: (datacenter == 'rdu3' and nbde|bool) or ( datacenter == 'rdu3' and nbde|bool) }
   - {role: serial-console, when: datacenter == 'rdu3' and ansible_architecture != 's390x'}
+  - {role: iscsi_client, when: datacenter == 'rdu3' and inventory_hostname.startswith('bvmhost-p10-01') }
 
   handlers:
   - import_tasks: "{{ handlers_path }}/restart_services.yml"

roles/iscsi_client/files/multipath.conf

@@ -0,0 +1,69 @@
+defaults {
+        rr_min_io               128
+        user_friendly_names     yes
+        max_fds                 max
+        queue_without_daemon    no
+	polling_interval   	3
+}
+
+blacklist {
+    devnode    "^(ram|raw|loop|fd|md|dm-|sr|scd|st)[0-9]*"
+    devnode    "^hd[a-z]"
+    devnode    "^cciss!c[0-9]d[0-9]*"
+    device {
+        vendor    "IBM-ESXS"
+    }
+    device {
+        vendor    "IBM"
+    }
+    device {
+        vendor    "LSILOGIC"
+    }
+    device {
+        vendor    "ATA"
+    }
+    device {
+        vendor    "VMware"
+    }
+    device {
+        vendor    "DELL"
+    }
+    device {
+        vendor    "WD"
+    }
+
+}
+
+devices {
+#        device {
+#                vendor               "NETAPP"
+#                product              "LUN"
+#                path_grouping_policy group_by_prio
+#                path_checker         directio
+#                failback             immediate
+#                prio                 ontap
+#                features             "no_path_retry queue"
+#        }
+
+        device {
+               path_checker    	tur
+	        product    		"NEXTRA"
+               vendor    		"XIV"
+               rr_min_io    		15
+               path_grouping_policy   	multibus
+	        path_selector    	"round-robin 0"
+	        no_path_retry   	5
+	        failback    		15
+	}
+
+	device {
+	        path_checker    	tur
+	        product    		"2810XIV"
+	        vendor    		"IBM"
+	        rr_min_io    		15
+	        path_grouping_policy    multibus
+	        path_selector    	"round-robin 0"
+	        no_path_retry    	5
+	        failback    		15
+	}
+}

roles/iscsi_client/tasks/main.yml

@@ -0,0 +1,33 @@
+---
+#
+# This task sets up iscsid and mpathd on a machine.
+#
+#
+- name: install packages needed for iscsi_client (dnf)
+  package:
+    state: present
+    name:
+    - iscsi-initiator-utils
+    - device-mapper-multipath
+  tags:
+  - packages
+
+- name: enable multipathd service
+  service: state=started enabled=yes name=multipathd
+  tags:
+  - services
+
+- name: setup multipath.conf file
+  copy: src=multipath.conf dest=/etc/multipath.conf
+  tags:
+  - config
+
+- name: setup initiatorname.iscsi
+  template: src=initiatorname.iscsi.j2 dest=/etc/iscsi/initiatorname.iscsi
+  tags:
+  - config
+
+- name: run iscsiadm command for initial connect to RDU3 netapp
+  command: creates=/var/lib/iscsi/nodes/{{ netapp_iscsi_name_rdu3 }}/{{ netapp_iscsi_portal_rdu3 }},3260 /sbin/iscsiadm --mode node --targetname  --portal {{ netapp_iscsi_portal_rdu3 }} -o new ; /sbin/iscsiadm --mode node --targetname {{ netapp_iscsi_name_rdu3 }} --portal {{ netapp_iscsi_portal_rdu3 }} --login
+  tags:
+  - config

roles/iscsi_client/templates/initiatorname.iscsi.j2

@@ -0,0 +1 @@
+InitiatorName=iqn.2003-11.org.fedoraproject.{{ inventory_hostname }}

roles/iscsi_client/vars/main.yml

@@ -0,0 +1,11 @@
+# iscsi initiator for netapp iscsi volume
+netapp_iscsi_name: iqn.1992-08.com.netapp:sn.fede3f22fb5a11efb799d039eac1c452:vs.3
+# iscsi portal for netapp iscsi volume
+netapp_iscsi_portal: 10.16.177.11
+
+# iscsi initiator for netapp iscsi volume
+netapp_iscsi_name_rdu3: iqn.1992-08.com.netapp:sn.fede3f22fb5a11efb799d039eac1c452:vs.3
+# iscsi portal for netapp iscsi volume
+netapp_iscsi_portal_rdu3: 10.16.177.11
+# iscsi interface for rdu3
+netapp_iscsi_interface_rdu3: br0