lvm-osds: update group_vars/osds.yml.sample

Signed-off-by: Andrew Schoen <aschoen@redhat.com>

diff --git a/group_vars/osds.yml.sample b/group_vars/osds.yml.sample
index ae06510ff13108a5b8271220a80e20d66209c9d4..67bff173aa86184aacdd6475eebf89b92cd985e0 100644 (file)
--- a/group_vars/osds.yml.sample
+++ b/group_vars/osds.yml.sample
@@ -195,6 +195,19 @@ dummy:
 # /dev/sdc1: PARTLABEL="ceph block.wal" PARTUUID="824b84ba-6777-4272-bbbd-bfe2a25cecf3"
 #bluestore_wal_devices: "{{ dedicated_devices }}"
 
+# VII. Use ceph-volume to create OSDs from logical volumes.
+# Use 'lvm_osds:true' to enable this scenario. Currently we only support dedicated journals
+# when using lvm, not collocated journals.
+# lvm_volumes is a dictionary whose key/value pair represent a data lv and a journal pair.
+# Journals can be either a lv, device or partition. You can not use the same journal for many data lvs.
+# For example:
+# lvm_volumes:
+#   data-lv1: journal-lv1
+#   data-lv2: /dev/sda
+#   data:lv3: /dev/sdb1
+#lvm_osds: false
+#lvm_volumes: {}
+
 
 ##########
 # DOCKER #