Re: Re: [PATCH RFC 20/21] conf: Add possibility to configure multiple iothreads per disk
Hi Peter,
+ - The optional ``iothreads`` sub-element allows specifying
multiple IOThreads
+ via the ``iothread`` sub-element with attribute ``id`` the disk will use
+ for I/O operations. Optionally the ``iothread`` element can have multiple
+ ``queue`` subelements specifying that given iothread should be used to
+ handle given queues. :since:`Since XXXXXX`.
Although this says that the ``queue`` sub-elements are optional, it
may be clearer to add another sentence that explains the device will
automatically assign virtqueues to the given ``iothread`` sub-elements
when ``queue`` is not given. That answers the question of "what is the
behavior of omitting ``queue``?".
+ <driver name='qemu' queues='2'>
+ <iothreads>
+ <iothread id='1'>
+ <queue id='1'/>
+ </iothread>
+ <iothread id='2'>
+ <queue id='1'/>
+ </iothread>
Each queue can only be assigned to 1 IOThread, so <queue id='1'/>
cannot be assigned to multiple IOThreads.
Thank you,
Stefan