fc3e627314
Fix wrong name Change-Id: I7edab749ede77591e35bc00902ac8e33893923ed Backport: havana Closes-Bug: 1249164
41 lines
1.8 KiB
XML
41 lines
1.8 KiB
XML
<section xmlns="http://docbook.org/ns/docbook"
|
|
xmlns:xi="http://www.w3.org/2001/XInclude"
|
|
xmlns:xlink="http://www.w3.org/1999/xlink" version="5.0"
|
|
xml:id="block-storage-service">
|
|
<title>Block Storage Service</title>
|
|
<para>The Block Storage Service enables management of volumes,
|
|
volume snapshots, and volume types. It includes the following
|
|
components:</para>
|
|
<itemizedlist>
|
|
<listitem>
|
|
<para><systemitem class="service">cinder-api</systemitem>.
|
|
Accepts API requests and routes them to <systemitem
|
|
class="service">cinder-volume</systemitem> for
|
|
action.</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para><systemitem class="service"
|
|
>cinder-volume</systemitem>. Responds to requests to read
|
|
from and write to the Block Storage database to maintain
|
|
state, interacting with other processes (like <systemitem
|
|
class="service">cinder-scheduler</systemitem>) through a
|
|
message queue and directly upon block storage providing
|
|
hardware or software. It can interact with a variety of
|
|
storage providers through a driver architecture.</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para><systemitem class="service"
|
|
>cinder-scheduler</systemitem> daemon. Like the
|
|
<systemitem class="service">nova-scheduler</systemitem>,
|
|
picks the optimal block storage provider node on which to
|
|
create the volume.</para>
|
|
</listitem>
|
|
<listitem>
|
|
<para>Messaging queue. Routes information between the Block
|
|
Storage Service processes.</para>
|
|
</listitem>
|
|
</itemizedlist>
|
|
<para>The Block Storage Service interacts with Compute to
|
|
provide volumes for instances.</para>
|
|
</section>
|