openstack
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openstack-ansible
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[Docs] Adapt the wording for disk requirements 

Disks requirements aren't clear, and people can think it's
always required to have 1TB disk on cinder nodes. There is no
hard requirement there, so we should remove this requirement,
mark it as recommendation, and point its only for LVM backends.

Change-Id: Ic45a7799e5092653d70fce9f2b6b7ae3f03d8775
(cherry picked from commit 62bbe0f38e)
This commit is contained in:
Jean-Philippe Evrard 2018-03-23 13:25:22 +00:00
parent 217ba37d92
commit 488306996c
1 changed files with 5 additions and 5 deletions
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10
deploy-guide/source/overview-requirements.rst
View File

@ -76,16 +76,16 @@ Storage hosts
Hosts running the Block Storage (cinder) service often consume the most disk
space in OpenStack environments.
Storage hosts must have a minimum of ``1 TB`` of disk space.
.. tip ::
As with Compute hosts, choose disks that provide the highest
I/O throughput with the lowest latency.
Hosts that provide Block Storage volumes must have Logical Volume
Manager (LVM) support. Ensure that hosts have a ``cinder-volume`` volume
group that OpenStack-Ansible can configure for use with Block Storage.
OpenStack-Ansible is able to deploy Cinder with a series of different
backends and uses Logical Volume Manager (LVM), by default.
Hosts that provide Block Storage volumes with LVM are recommended to
have a large disk space available allocated to a ``cinder-volume``
volume group, which OpenStack-Ansible can configure for use with Block Storage.
Infrastructure (control plane) hosts
------------------------------------