openstack/manila
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manila/install-guide/source/common/share-node-share-server-modes.rst
Goutham Pacha Ravi dfbe3ea418 In-tree Install Guide 
The OpenStack install guide team has recommended that projects
that are not part of the starter-kit:compute [1] (and a few other projects
like Cinder and Horizon) maintain their install guide in-tree. [2]

[1] http://governance.openstack.org/reference/tags/starter-kit_compute.html
[2] http://git.openstack.org/cgit/openstack/docs-specs/tree/specs/newton/project-specific-installguides.rst

Change-Id: I2b49fcfd99b3be40bb1ae7d7b8348abdb5b58b90
Co-Authored-By: Denis Cavalcante <dencaval@gmail.com>
Implements: blueprint manila-in-tree-install-guide
Partially-implements: blueprint projectspecificinstallguides
2016-08-12 08:06:38 -04:00

1.8 KiB
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The share node can support two modes, with and without the handling of share servers. The mode depends on driver support.

Option 1

Deploying the service without driver support for share management. In this mode, the service does not do anything related to networking. The operator must ensure network connectivity between instances and the NFS server. This tutorial demonstrates setting up the LVM driver to support this driver mode. It requires LVM and NFS packages as well as an additional disk for the manila-share LVM volume group. This driver mode may be referred to as driver_handles_share_servers = False mode, or simply DHSS=False mode.

Option 2

Deploying the service with driver support for share management. In this mode, the service runs with a back end driver that creates and manages share servers. This tutorial demonstrates setting up the Generic driver. This driver requires Compute (nova), Networking (neutron) and Block storage (cinder) services for managing share servers. The information used for creating share servers is configured with the help of share networks. This option uses the generic driver with the handling of share servers capacity and requires attaching the selfservice network to a router. This driver mode may be referred to as driver_handles_share_servers = True mode, or simply DHSS=True mode.

Warning

When running the generic driver in DHSS=True driver mode, the share service should be run on the same node as the networking service. However, such a service may not be able to run the LVM driver that runs in DHSS=False driver mode effectively, due to a bug in some distributions of Linux. For more information, see LVM Driver section in the Configuration Reference Guide.