[libvirt] [PATCH v2 5/5] domain_conf: Process the "rawio" for a hostdev device
John Ferlan
jferlan at redhat.com
Fri Sep 19 10:17:31 UTC 2014
Add a "rawio" to the hostdev XML and process it mimicing the
disk XML for a lun which supports/requires rawio
Signed-off-by: John Ferlan <jferlan at redhat.com>
---
docs/formatdomain.html.in | 12 ++++++--
docs/schemas/domaincommon.rng | 12 ++++++--
src/conf/domain_conf.c | 24 +++++++++++++++
.../qemuxml2argv-hostdev-scsi-rawio.xml | 35 ++++++++++++++++++++++
tests/qemuxml2xmltest.c | 1 +
5 files changed, 78 insertions(+), 6 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-rawio.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in
index 8c03ebb..5e2b65a 100644
--- a/docs/formatdomain.html.in
+++ b/docs/formatdomain.html.in
@@ -1815,7 +1815,7 @@
<dt><code>rawio</code> attribute
<span class="since">since 0.9.10</span></dt>
<dd>
- Indicates whether the disk is needs rawio capability; valid
+ Indicates whether the disk needs rawio capability. Valid
settings are "yes" or "no" (default is "no"). If any one disk
in a domain has rawio='yes', rawio capability will be enabled
for all disks in the domain (because, in the case of QEMU, this
@@ -2925,7 +2925,7 @@
<pre>
...
<devices>
- <hostdev mode='subsystem' type='scsi'>
+ <hostdev mode='subsystem' type='scsi' sgio='filtered' rawio='yes'>
<source>
<adapter name='scsi_host0'/>
<address type='scsi' bus='0' target='0' unit='0'/>
@@ -2984,7 +2984,13 @@
(<span class="since">since 1.0.6</span>) attribute indicates
whether the kernel will filter unprivileged SG_IO commands for
the disk, valid settings are "filtered" or "unfiltered".
- The default is "filtered".
+ The default is "filtered". The optional <code>rawio</code>
+ (<span class="since">since 1.2.9</span>) attribute indicates
+ whether the lun needs the rawio capability. Valid settings are
+ "yes" or "no". See the rawio description within the
+ <a href="#elementsDisks">disk</a> section.
+ If a disk lun in the domain already has the rawio capability,
+ then this setting not required.
</dd>
</dl>
</dd>
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index 19dc82f..36bc184 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1252,9 +1252,7 @@
</choice>
</attribute>
<optional>
- <attribute name="rawio">
- <ref name="virYesNo"/>
- </attribute>
+ <ref name="rawIO"/>
</optional>
<optional>
<attribute name="sgio">
@@ -3577,6 +3575,9 @@
</choice>
</attribute>
</optional>
+ <optional>
+ <ref name="rawIO"/>
+ </optional>
<element name="source">
<choice>
<group> <!-- scsi_host adapter -->
@@ -4937,4 +4938,9 @@
</optional>
</element>
</define>
+ <define name="rawIO">
+ <attribute name="rawio">
+ <ref name="virYesNo"/>
+ </attribute>
+ </define>
</grammar>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index c240c83..bb4a4cb 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -4504,6 +4504,7 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
xmlNodePtr sourcenode;
char *managed = NULL;
char *sgio = NULL;
+ char *rawio = NULL;
char *backendStr = NULL;
int backend;
int ret = -1;
@@ -4521,6 +4522,7 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
}
sgio = virXMLPropString(node, "sgio");
+ rawio = virXMLPropString(node, "rawio");
/* @type is passed in from the caller rather than read from the
* xml document, because it is specified in different places for
@@ -4572,6 +4574,21 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
}
}
+ if (rawio) {
+ if (def->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI) {
+ virReportError(VIR_ERR_XML_ERROR, "%s",
+ _("rawio is only supported for scsi host device"));
+ goto error;
+ }
+
+ if ((scsisrc->rawio = virTristateBoolTypeFromString(rawio)) <= 0) {
+ virReportError(VIR_ERR_XML_ERROR,
+ _("unknown hostdev rawio setting '%s'"),
+ rawio);
+ goto error;
+ }
+ }
+
switch (def->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI:
if (virDomainHostdevSubsysPCIDefParseXML(sourcenode, def, flags) < 0)
@@ -4611,6 +4628,7 @@ virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
error:
VIR_FREE(managed);
VIR_FREE(sgio);
+ VIR_FREE(rawio);
VIR_FREE(backendStr);
return ret;
}
@@ -17804,6 +17822,12 @@ virDomainHostdevDefFormat(virBufferPtr buf,
scsisrc->sgio)
virBufferAsprintf(buf, " sgio='%s'",
virDomainDeviceSGIOTypeToString(scsisrc->sgio));
+
+ if (def->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+ scsisrc->rawio) {
+ virBufferAsprintf(buf, " rawio='%s'",
+ virTristateBoolTypeToString(scsisrc->rawio));
+ }
}
virBufferAddLit(buf, ">\n");
virBufferAdjustIndent(buf, 2);
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-rawio.xml b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-rawio.xml
new file mode 100644
index 0000000..69fdde3
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-rawio.xml
@@ -0,0 +1,35 @@
+<domain type='qemu'>
+ <name>QEMUGuest2</name>
+ <uuid>c7a5fdbd-edaf-9466-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'/>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest2'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='scsi' index='0' model='virtio-scsi'/>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <hostdev mode='subsystem' type='scsi' managed='yes' sgio='unfiltered' rawio='yes'>
+ <source>
+ <adapter name='scsi_host0'/>
+ <address bus='0' target='0' unit='0'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='4' unit='8'/>
+ </hostdev>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 675403a..56a371e 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -369,6 +369,7 @@ mymain(void)
DO_TEST("disk-copy_on_read");
DO_TEST("hostdev-scsi-shareable");
DO_TEST("hostdev-scsi-sgio");
+ DO_TEST("hostdev-scsi-rawio");
DO_TEST_DIFFERENT("hostdev-scsi-autogen-address");
--
1.9.3
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