Re: [libvirt] [PATCH 3/4] domain_conf: Add support for iothreads in disk definition

Add a new disk "driver" attribute "iothread" to be parsed as the thread number for the disk to use. In order to more easily facilitate the usage and configuration of the iothread, a "zero" for the attribute indicates iothreads are not supported for the device and a positive value indicates the specific thread to try and use. Signed-off-by: John Ferlan <jferlan(a)redhat.com&gt; --- docs/formatdomain.html.in | 8 ++++++++ docs/schemas/domaincommon.rng | 13 +++++++++++++ src/conf/domain_conf.c | 24 +++++++++++++++++++++++- src/conf/domain_conf.h | 2 ++ 4 files changed, 46 insertions(+), 1 deletion(-)

@@ -11968,6 +11980,14 @@ virDomainDefParseXML(xmlDocPtr xml, goto error; } def->iothreads = count; + + /* Create a bitmap for inuse threads - noting that entries are + * numbered 1..def->iothreads since 0 (zero) iothreads means + * nothing and assigning a disk to an IOThread requires at least a + * thread# > 0 since a zero would indicate no IOThread for the disk + */ + if (!(def->iothreadmap = virBitmapNew(def->iothreads+1))) + goto error; }