This patch introduces a new directory layout in doc/source in conformance with the OpenStack manuals project migration spec [1], moves the existing content in manila/doc/source into the new directories, and adjusts index files accordingly. This is the first step in the migration process as outlined in the spec. [1] https://specs.openstack.org/openstack/docs-specs/specs/pike/os-manuals-migration.html Partial-Bug: #1706181 Needed-By: I7924d94b82e7c8d9716bad7a219fc38c57970773 Depends-On: Ifc80fc56648cef74c85464321d1850e8c68449a0 Depends-On: Ia750cb049c0f53a234ea70ce1f2bbbb7a2aa9454 Change-Id: Ieea33262101a1d2459492c1c8aaac5fe042279f6
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Glossary
- manila
-
OpenStack project to provide "Shared Filesystems as a service".
- manila-api
-
Service that provides a stable RESTful API. The service authenticates and routes requests throughout the Shared Filesystem service. There is
python-manilaclient
to interact with the API. - python-manilaclient
-
Command line interface to interact with
manila
viamanila-api
and also a Python module to interact programmatically withmanila
. - manila-scheduler
-
Responsible for scheduling/routing requests to the appropriate
manila-share
service. It does that by picking one back-end while filtering all except one back-end. - manila-share
-
Responsible for managing Shared File Service devices, specifically the back-end devices.
- DHSS
-
Acronym for 'driver handles share servers'. It defines two different share driver modes when they either do handle share servers or not. Each driver is allowed to work only in one mode at once. Requirement is to support, at least, one mode.
- replication_type
-
Type of replication supported by a share driver. If the share driver supports replication it will report a valid value to the
manila-scheduler
. The value of this capability can be one ofreadable
,writable
ordr
. - readable
-
A type of replication supported by
manila
in which there is oneactive
replica (also referred to as primary share) and one or more non-active replicas (also referred to as secondary shares). All share replicas have at least one export location and are mountable. However, the non-active replicas cannot be written to until after promotion. - writable
-
A type of replication supported by
manila
in which all share replicas are writable. There is no requirement of a promotion since replication is synchronous. All share replicas have one or more export locations each and are mountable. - dr
-
Acronym for Disaster Recovery. It is a type of replication supported by
manila
in which there is oneactive
replica (also referred to as primary share) and one or more non-active replicas (also referred to as secondary shares). Only the active replica has one or more export locations and can be mounted. The non-active replicas are inaccessible until after promotion. - active
-
In
manila
, an active replica refers to a share that can be written to. In readable and dr styles of replication, there is only one active replica at any given point in time. Thus, it may also be referred to as the primary share. In writable style of replication, all replicas are writable and there may be no distinction of a primary share. - replica_state
-
An attribute of the Share Instance (Share Replica) model in
manila
. If the value isactive
, it refers to the type of the replica. If the value is one of in_sync or out_of_sync, it refers to the state of consistency of data between theactive
replica and the share replica. If the value is error, a potentially irrecoverable error may have occurred during the update of data between theactive
replica and the share replica. - replication_change
-
State of a non-active replica when it is being promoted to become the
active
replica. - recovery point objective
-
Abbreviated as
RPO
, recovery point objective is a target window of time between which a storage backend may guarantee that data is consistent between a primary and a secondary replica. This window is not managed bymanila
.