[libvirt] [PATCHv2] RPC: Support up to 16384 cpus on the host and 4096 in the guest
by Peter Krempa
The RPC limits for cpu maps didn't allow to use libvirt on ultra big
boxes. This patch increases size of the limits to support a maximum of
16384 cpus on the host with a maximum of 4096 cpus per guest.
The full cpu map of such a system takes 8 megabytes and the map for
vcpu pinning is 2 kilobytes long.
---
src/remote/remote_protocol.x | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 1ebbce7..9723377 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -82,13 +82,13 @@ const REMOTE_DOMAIN_ID_LIST_MAX = 16384;
const REMOTE_DOMAIN_NAME_LIST_MAX = 16384;
/* Upper limit on cpumap (bytes) passed to virDomainPinVcpu. */
-const REMOTE_CPUMAP_MAX = 256;
+const REMOTE_CPUMAP_MAX = 2048;
/* Upper limit on number of info fields returned by virDomainGetVcpus. */
-const REMOTE_VCPUINFO_MAX = 2048;
+const REMOTE_VCPUINFO_MAX = 16384;
/* Upper limit on cpumaps (bytes) passed to virDomainGetVcpus. */
-const REMOTE_CPUMAPS_MAX = 16384;
+const REMOTE_CPUMAPS_MAX = 8388608;
/* Upper limit on migrate cookie. */
const REMOTE_MIGRATE_COOKIE_MAX = 16384;
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH v3] conf: Generate address for scsi host device automatically
by Osier Yang
With unknown good reasons, the attribute "bus" of scsi device
address is always set to 0, same for attribute "target". (See
virDomainDiskDefAssignAddress).
Though we might need to change the algorithm to honor "bus"
and "target" too, that's a different issue. The address generator
for scsi host device in this patch just follows the unknown
good reasons, only considering the "controller" and "unit".
It walks through all scsi controllers and their units, to see
if the address $controller:0:0:$unit can be used (if not used
by any disk or scsi host device yet), if found one, it sits on
it, otherwise, it creates a new controller (actually the controller
is implicitly created by someone else), and sits on
$new_controller:0:0:0 instead.
---
v2 - v3:
* Improve the for loop a bit with John's suggestion
v1 - v2:
* A new helper virDomainSCSIDriveAddressIsUsed
* Move virDomainDefMaybeAddHostdevSCSIcontroller
* More comments
* Add testing.
* problems fixed with the testing:
1) s/nscsi_controllers + 1/nscsi_controllers/,
2) Add the controller implicitly after a scsi hostdev def
parsing, as it can use a new scsi controller index
(nscsi_controllers), which should be added implicitly.
---
src/conf/domain_conf.c | 202 ++++++++++++++++++---
.../qemuxml2argv-hostdev-scsi-autogen-address.xml | 95 ++++++++++
...qemuxml2xmlout-hostdev-scsi-autogen-address.xml | 106 +++++++++++
tests/qemuxml2xmltest.c | 2 +
4 files changed, 375 insertions(+), 30 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-autogen-address.xml
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-hostdev-scsi-autogen-address.xml
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 2b4e160..46d49a2 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3782,6 +3782,141 @@ cleanup:
return ret;
}
+/* Check if a drive type address $controller:0:0:$unit is already
+ * taken by a disk or not.
+ */
+static bool
+virDomainDriveAddressIsUsedByDisk(virDomainDefPtr def,
+ enum virDomainDiskBus type,
+ unsigned int controller,
+ unsigned int unit)
+{
+ virDomainDiskDefPtr disk;
+ int i;
+
+ for (i = 0; i < def->ndisks; i++) {
+ disk = def->disks[i];
+
+ if (disk->bus != type ||
+ disk->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE)
+ continue;
+
+ if (disk->info.addr.drive.controller == controller &&
+ disk->info.addr.drive.unit == unit &&
+ disk->info.addr.drive.bus == 0 &&
+ disk->info.addr.drive.target == 0)
+ return true;
+ }
+
+ return false;
+}
+
+/* Check if a drive type address $controller:0:0:$unit is already
+ * taken by a host device or not.
+ */
+static bool
+virDomainDriveAddressIsUsedByHostdev(virDomainDefPtr def,
+ enum virDomainHostdevSubsysType type,
+ unsigned int controller,
+ unsigned int unit)
+{
+ virDomainHostdevDefPtr hostdev;
+ int i;
+
+ for (i = 0; i < def->nhostdevs; i++) {
+ hostdev = def->hostdevs[i];
+
+ if (hostdev->source.subsys.type != type)
+ continue;
+
+ if (hostdev->info->addr.drive.controller == controller &&
+ hostdev->info->addr.drive.unit == unit &&
+ hostdev->info->addr.drive.bus == 0 &&
+ hostdev->info->addr.drive.target == 0)
+ return true;
+ }
+
+ return false;
+}
+
+static bool
+virDomainSCSIDriveAddressIsUsed(virDomainDefPtr def,
+ unsigned int controller,
+ unsigned int unit)
+{
+ /* In current implementation, the maximum unit number of a controller
+ * is either 16 or 7 (narrow SCSI bus), and if the maximum unit number
+ * is 16, the controller itself is on unit 7 */
+ if (unit == 7)
+ return true;
+
+ if (virDomainDriveAddressIsUsedByDisk(def, VIR_DOMAIN_DISK_BUS_SCSI,
+ controller, unit) ||
+ virDomainDriveAddressIsUsedByHostdev(def, VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI,
+ controller, unit))
+ return true;
+
+ return false;
+}
+
+/* Find out the next usable "unit" of a specific controller */
+static int
+virDomainControllerSCSINextUnit(virDomainDefPtr def,
+ unsigned int max_unit,
+ unsigned int controller)
+{
+ int i;
+
+ for (i = 0; i < max_unit; i++) {
+ if (!virDomainSCSIDriveAddressIsUsed(def, controller, i))
+ return i;
+ }
+
+ return -1;
+}
+
+#define SCSI_WIDE_BUS_MAX_CONT_UNIT 16
+#define SCSI_NARROW_BUS_MAX_CONT_UNIT 7
+
+static int
+virDomainHostdevAssignAddress(virDomainXMLOptionPtr xmlopt,
+ virDomainDefPtr def,
+ virDomainHostdevDefPtr hostdev)
+{
+ int next_unit;
+ unsigned nscsi_controllers = 0;
+ bool found = false;
+ int i;
+
+ if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
+ return -1;
+
+ for (i = 0; i < def->ncontrollers && !found; i++) {
+ if (def->controllers[i]->type != VIR_DOMAIN_CONTROLLER_TYPE_SCSI)
+ continue;
+
+ nscsi_controllers++;
+ next_unit = virDomainControllerSCSINextUnit(def,
+ xmlopt->config.hasWideScsiBus ?
+ SCSI_WIDE_BUS_MAX_CONT_UNIT :
+ SCSI_NARROW_BUS_MAX_CONT_UNIT,
+ def->controllers[i]->idx);
+ if (next_unit >= 0)
+ found = true;
+ }
+
+ hostdev->info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE;
+
+ hostdev->info->addr.drive.controller = found ?
+ def->controllers[i - 1]->idx :
+ nscsi_controllers;
+ hostdev->info->addr.drive.bus = 0;
+ hostdev->info->addr.drive.target = 0;
+ hostdev->info->addr.drive.unit = found ? next_unit : 0;
+
+ return 0;
+}
+
static int
virDomainHostdevDefParseXMLSubsys(xmlNodePtr node,
xmlXPathContextPtr ctxt,
@@ -8802,7 +8937,9 @@ error:
}
static virDomainHostdevDefPtr
-virDomainHostdevDefParseXML(const xmlNodePtr node,
+virDomainHostdevDefParseXML(virDomainXMLOptionPtr xmlopt,
+ virDomainDefPtr vmdef,
+ const xmlNodePtr node,
xmlXPathContextPtr ctxt,
virHashTablePtr bootHash,
unsigned int flags)
@@ -8862,7 +8999,9 @@ virDomainHostdevDefParseXML(const xmlNodePtr node,
}
break;
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI:
- if (def->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
+ if (def->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
+ virDomainHostdevAssignAddress(xmlopt, vmdef, def) < 0) {
+
virReportError(VIR_ERR_XML_ERROR, "%s",
_("SCSI host devices must have address specified"));
goto error;
@@ -9271,8 +9410,8 @@ virDomainDeviceDefParse(const char *xmlStr,
goto error;
} else if (xmlStrEqual(node->name, BAD_CAST "hostdev")) {
dev->type = VIR_DOMAIN_DEVICE_HOSTDEV;
- if (!(dev->data.hostdev = virDomainHostdevDefParseXML(node, ctxt, NULL,
- flags)))
+ if (!(dev->data.hostdev = virDomainHostdevDefParseXML(xmlopt, def, node,
+ ctxt, NULL, flags)))
goto error;
} else if (xmlStrEqual(node->name, BAD_CAST "controller")) {
dev->type = VIR_DOMAIN_DEVICE_CONTROLLER;
@@ -10255,6 +10394,30 @@ error:
return NULL;
}
+static int
+virDomainDefMaybeAddHostdevSCSIcontroller(virDomainDefPtr def)
+{
+ /* Look for any hostdev scsi dev */
+ int i;
+ int maxController = -1;
+ virDomainHostdevDefPtr hostdev;
+
+ for (i = 0; i < def->nhostdevs; i++) {
+ hostdev = def->hostdevs[i];
+ if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
+ hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
+ (int)hostdev->info->addr.drive.controller > maxController) {
+ maxController = hostdev->info->addr.drive.controller;
+ }
+ }
+
+ for (i = 0; i <= maxController; i++) {
+ if (virDomainDefMaybeAddController(def, VIR_DOMAIN_CONTROLLER_TYPE_SCSI, i, -1) < 0)
+ return -1;
+ }
+
+ return 0;
+}
static virDomainDefPtr
virDomainDefParseXML(xmlDocPtr xml,
@@ -11618,7 +11781,8 @@ virDomainDefParseXML(xmlDocPtr xml,
for (i = 0; i < n; i++) {
virDomainHostdevDefPtr hostdev;
- hostdev = virDomainHostdevDefParseXML(nodes[i], ctxt, bootHash, flags);
+ hostdev = virDomainHostdevDefParseXML(xmlopt, def, nodes[i],
+ ctxt, bootHash, flags);
if (!hostdev)
goto error;
@@ -11631,6 +11795,9 @@ virDomainDefParseXML(xmlDocPtr xml,
}
def->hostdevs[def->nhostdevs++] = hostdev;
+
+ if (virDomainDefMaybeAddHostdevSCSIcontroller(def) < 0)
+ goto error;
}
VIR_FREE(nodes);
@@ -13232,31 +13399,6 @@ virDomainDefMaybeAddSmartcardController(virDomainDefPtr def)
return 0;
}
-static int
-virDomainDefMaybeAddHostdevSCSIcontroller(virDomainDefPtr def)
-{
- /* Look for any hostdev scsi dev */
- int i;
- int maxController = -1;
- virDomainHostdevDefPtr hostdev;
-
- for (i = 0; i < def->nhostdevs; i++) {
- hostdev = def->hostdevs[i];
- if (hostdev->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
- hostdev->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI &&
- (int)hostdev->info->addr.drive.controller > maxController) {
- maxController = hostdev->info->addr.drive.controller;
- }
- }
-
- for (i = 0; i <= maxController; i++) {
- if (virDomainDefMaybeAddController(def, VIR_DOMAIN_CONTROLLER_TYPE_SCSI, i, -1) < 0)
- return -1;
- }
-
- return 0;
-}
-
/*
* Based on the declared <address/> info for any devices,
* add necessary drive controllers which are not already present
diff --git a/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-autogen-address.xml b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-autogen-address.xml
new file mode 100644
index 0000000..21f112b
--- /dev/null
+++ b/tests/qemuxml2argvdata/qemuxml2argv-hostdev-scsi-autogen-address.xml
@@ -0,0 +1,95 @@
+<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'>
+ <source>
+ <adapter name='scsi_host0'/>
+ <address bus='0' target='0' unit='0'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host1'/>
+ <address bus='0' target='0' unit='1'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host2'/>
+ <address bus='0' target='0' unit='2'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host3'/>
+ <address bus='0' target='0' unit='3'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host4'/>
+ <address bus='0' target='0' unit='4'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host5'/>
+ <address bus='0' target='0' unit='5'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host6'/>
+ <address bus='0' target='0' unit='6'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host7'/>
+ <address bus='0' target='0' unit='7'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host8'/>
+ <address bus='0' target='0' unit='8'/>
+ </source>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host9'/>
+ <address bus='0' target='0' unit='9'/>
+ </source>
+ <address type='drive' controller='1' bus='0' target='0' unit='5'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host10'/>
+ <address bus='0' target='0' unit='10'/>
+ </source>
+ </hostdev>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/qemuxml2xmlout-hostdev-scsi-autogen-address.xml b/tests/qemuxml2xmloutdata/qemuxml2xmlout-hostdev-scsi-autogen-address.xml
new file mode 100644
index 0000000..e416654
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/qemuxml2xmlout-hostdev-scsi-autogen-address.xml
@@ -0,0 +1,106 @@
+<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'/>
+ <controller type='scsi' index='1'/>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host0'/>
+ <address bus='0' target='0' unit='0'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host1'/>
+ <address bus='0' target='0' unit='1'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='1'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host2'/>
+ <address bus='0' target='0' unit='2'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='2'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host3'/>
+ <address bus='0' target='0' unit='3'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='3'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host4'/>
+ <address bus='0' target='0' unit='4'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='4'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host5'/>
+ <address bus='0' target='0' unit='5'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='5'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host6'/>
+ <address bus='0' target='0' unit='6'/>
+ </source>
+ <address type='drive' controller='0' bus='0' target='0' unit='6'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host7'/>
+ <address bus='0' target='0' unit='7'/>
+ </source>
+ <address type='drive' controller='1' bus='0' target='0' unit='0'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host8'/>
+ <address bus='0' target='0' unit='8'/>
+ </source>
+ <address type='drive' controller='1' bus='0' target='0' unit='1'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host9'/>
+ <address bus='0' target='0' unit='9'/>
+ </source>
+ <address type='drive' controller='1' bus='0' target='0' unit='5'/>
+ </hostdev>
+ <hostdev mode='subsystem' type='scsi' managed='yes'>
+ <source>
+ <adapter name='scsi_host10'/>
+ <address bus='0' target='0' unit='10'/>
+ </source>
+ <address type='drive' controller='1' bus='0' target='0' unit='2'/>
+ </hostdev>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmltest.c b/tests/qemuxml2xmltest.c
index 64a271c..06e4206 100644
--- a/tests/qemuxml2xmltest.c
+++ b/tests/qemuxml2xmltest.c
@@ -298,6 +298,8 @@ mymain(void)
DO_TEST("hostdev-scsi-shareable");
DO_TEST("hostdev-scsi-sgio");
+ DO_TEST_DIFFERENT("hostdev-scsi-autogen-address");
+
virObjectUnref(driver.caps);
virObjectUnref(driver.xmlopt);
--
1.8.1.4
11 years, 6 months
[libvirt] [PATCH] spec: Explicitly require gcrypt-devel
by Jiri Denemark
Our configure.ac says:
Not all versions of gnutls include -lgcrypt, and so we add
it explicitly for the calls to gcry_control/check_version
Thus we cannot rely on gnutls-devel to bring grcypt-devel as a
dependency.
---
libvirt.spec.in | 1 +
1 file changed, 1 insertion(+)
diff --git a/libvirt.spec.in b/libvirt.spec.in
index 37d656d..6aea8f4 100644
--- a/libvirt.spec.in
+++ b/libvirt.spec.in
@@ -418,6 +418,7 @@ BuildRequires: readline-devel
BuildRequires: ncurses-devel
BuildRequires: gettext
BuildRequires: libtasn1-devel
+BuildRequires: gcrypt-devel
BuildRequires: gnutls-devel
BuildRequires: libattr-devel
%if %{with_libvirtd}
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH] virsh iface-bridge: Ignore delay if stp is turned off
by Jiri Denemark
Delay only makes sense with STP enabled.
---
tools/virsh-interface.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/tools/virsh-interface.c b/tools/virsh-interface.c
index 1c2e40b..2bdb215 100644
--- a/tools/virsh-interface.c
+++ b/tools/virsh-interface.c
@@ -894,7 +894,7 @@ cmdInterfaceBridge(vshControl *ctl, const vshCmd *cmd)
goto cleanup;
}
- if ((delay || stp) &&
+ if (stp &&
((virAsprintf(&delay_str, "%d", delay) < 0) ||
!xmlSetProp(br_node, BAD_CAST "delay", BAD_CAST delay_str))) {
vshError(ctl, _("Failed to set bridge delay %d in xml document"), delay);
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH] Fix warning about using an uninitialized next_unit value
by Jiri Denemark
Using an uninitialized value and a bool saying if the value is valid may
confuse compilators.
---
src/conf/domain_conf.c | 24 +++++++++++++-----------
1 file changed, 13 insertions(+), 11 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 46d49a2..6dc8cf3 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -3883,26 +3883,28 @@ virDomainHostdevAssignAddress(virDomainXMLOptionPtr xmlopt,
virDomainDefPtr def,
virDomainHostdevDefPtr hostdev)
{
- int next_unit;
+ int next_unit = 0;
unsigned nscsi_controllers = 0;
- bool found = false;
int i;
+ int ret;
if (hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_SCSI)
return -1;
- for (i = 0; i < def->ncontrollers && !found; i++) {
+ for (i = 0; i < def->ncontrollers; i++) {
if (def->controllers[i]->type != VIR_DOMAIN_CONTROLLER_TYPE_SCSI)
continue;
nscsi_controllers++;
- next_unit = virDomainControllerSCSINextUnit(def,
- xmlopt->config.hasWideScsiBus ?
- SCSI_WIDE_BUS_MAX_CONT_UNIT :
- SCSI_NARROW_BUS_MAX_CONT_UNIT,
- def->controllers[i]->idx);
- if (next_unit >= 0)
- found = true;
+ ret = virDomainControllerSCSINextUnit(def,
+ xmlopt->config.hasWideScsiBus ?
+ SCSI_WIDE_BUS_MAX_CONT_UNIT :
+ SCSI_NARROW_BUS_MAX_CONT_UNIT,
+ def->controllers[i]->idx);
+ if (ret >= 0) {
+ next_unit = ret;
+ break;
+ }
}
hostdev->info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_DRIVE;
@@ -3912,7 +3914,7 @@ virDomainHostdevAssignAddress(virDomainXMLOptionPtr xmlopt,
nscsi_controllers;
hostdev->info->addr.drive.bus = 0;
hostdev->info->addr.drive.target = 0;
- hostdev->info->addr.drive.unit = found ? next_unit : 0;
+ hostdev->info->addr.drive.unit = next_unit;
return 0;
}
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH] use virBitmapFree instead of VIR_FREE for cpumask
by Ján Tomko
Found by 'git grep FREE.*cpumask' after looking at 31f1f6b.
---
src/conf/domain_conf.c | 2 +-
src/libxl/libxl_driver.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 46d49a2..b335b58 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -13542,7 +13542,7 @@ virDomainVcpuPinDel(virDomainDefPtr def, int vcpu)
for (n = 0; n < def->cputune.nvcpupin; n++) {
if (vcpupin_list[n]->vcpuid == vcpu) {
- VIR_FREE(vcpupin_list[n]->cpumask);
+ virBitmapFree(vcpupin_list[n]->cpumask);
VIR_FREE(vcpupin_list[n]);
memmove(&vcpupin_list[n],
&vcpupin_list[n+1],
diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c
index 7245f97..bed583b 100644
--- a/src/libxl/libxl_driver.c
+++ b/src/libxl/libxl_driver.c
@@ -651,7 +651,7 @@ libxlVmCleanup(libxlDriverPrivatePtr driver,
/* Remove any cputune settings */
if (vm->def->cputune.nvcpupin) {
for (i = 0; i < vm->def->cputune.nvcpupin; ++i) {
- VIR_FREE(vm->def->cputune.vcpupin[i]->cpumask);
+ virBitmapFree(vm->def->cputune.vcpupin[i]->cpumask);
VIR_FREE(vm->def->cputune.vcpupin[i]);
}
VIR_FREE(vm->def->cputune.vcpupin);
--
1.8.1.5
11 years, 6 months
[libvirt] [PATCH 0/3] virsh: Add --live, --config, --current to attach-* commands too
by Peter Krempa
In commit 69ce3ffa8d431e9810607c6e00b7cfcc481b491d a pattern was established to
upgrade hotplug commands in virsh. The series containing the patch forgot
to upgrade the attach-* commands too.
Peter Krempa (3):
virsh-domain: Add --live, --config, --current logic to cmdAttachDevice
virsh-domain: Add --live, --config, --current logic to cmdAttachDisk
virsh-domain: Add --live, --config, --current logic to
cmdAttachInterface
tools/virsh-domain.c | 153 ++++++++++++++++++++++++++++++++++++---------------
tools/virsh.pod | 63 ++++++++++++++-------
2 files changed, 153 insertions(+), 63 deletions(-)
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH 00/11] vCPU hotplug mega-series
by Peter Krempa
This patch series consists of multiple parts:
-patch 1,2: Two trivial cleanups
-patch 3: Improve and refactor vCPU data parsing
-patch 4: Add agent monitor helpers for cpu-hotplug stuff
-patch 5,6,7: Implement universal guest vCPU mapping function
-patch 8: Implement new qemu monitor command for cpu hotplug
-patch 9,10,11: Implement agent based cpu state manipulation API/command
Tip: The new "virsh vcpumap guest --active" command may be used that the
agent actually offlined the vCPU in the guest.
Peter Krempa (11):
virsh-domain-monitor: Remove ATTRIBUTE_UNUSED from a argument
qemu: Use bool instead of int in qemuMonitorSetCPU APIs
qemu: Extract more information about vCPUs and threads
qemu_agent: Introduce helpers for agent based CPU hot(un)plug
lib: Add API to map virtual cpus of a guest
virsh-domain-monitor: Implement command to map guest vCPUs
qemu: Implement virDomainGetVCPUMap for the qemu driver
qemu: Implement new QMP command for cpu hotplug
lib: Add API to modify vCPU state from the guest using the guest agent
virsh-domain: Implement command for virDomainSetGuestVcpu
qemu: Implement virDomainSetGuetVcpu in qemu driver
daemon/remote.c | 54 ++++++++
include/libvirt/libvirt.h.in | 25 ++++
python/generator.py | 1 +
python/libvirt-override-api.xml | 7 +
python/libvirt-override.c | 66 ++++++++++
src/driver.h | 14 ++
src/libvirt.c | 129 +++++++++++++++++++
src/libvirt_public.syms | 7 +
src/qemu/qemu_agent.c | 148 +++++++++++++++++++++
src/qemu/qemu_agent.h | 12 ++
src/qemu/qemu_driver.c | 279 +++++++++++++++++++++++++++++++++++++---
src/qemu/qemu_monitor.c | 11 +-
src/qemu/qemu_monitor.h | 13 +-
src/qemu/qemu_monitor_json.c | 86 ++++++++++---
src/qemu/qemu_monitor_json.h | 4 +-
src/qemu/qemu_monitor_text.c | 94 ++++++++------
src/qemu/qemu_monitor_text.h | 4 +-
src/qemu/qemu_process.c | 63 ++++++---
src/remote/remote_driver.c | 48 +++++++
src/remote/remote_protocol.x | 31 ++++-
src/remote_protocol-structs | 20 +++
tools/virsh-domain-monitor.c | 112 +++++++++++++++-
tools/virsh-domain.c | 77 +++++++++++
tools/virsh.pod | 29 +++++
24 files changed, 1224 insertions(+), 110 deletions(-)
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH] usb: don't spoil decadic addresses
by Martin Kletzander
For USB devices, dev->name gets formated as %.3o:%.3o even though the
numbers are decadic.
Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=967712
Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com>
---
Notes:
It can be seen few lines down the file
src/util/virusb.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/src/util/virusb.c b/src/util/virusb.c
index 27ba9c7..d34e44f 100644
--- a/src/util/virusb.c
+++ b/src/util/virusb.c
@@ -342,10 +342,10 @@ virUSBDeviceNew(unsigned int bus,
dev->bus = bus;
dev->dev = devno;
- if (snprintf(dev->name, sizeof(dev->name), "%.3o:%.3o",
+ if (snprintf(dev->name, sizeof(dev->name), "%.3d:%.3d",
dev->bus, dev->dev) >= sizeof(dev->name)) {
virReportError(VIR_ERR_INTERNAL_ERROR,
- _("dev->name buffer overflow: %.3o:%.3o"),
+ _("dev->name buffer overflow: %.3d:%.3d"),
dev->bus, dev->dev);
virUSBDeviceFree(dev);
return NULL;
--
1.8.2.1
11 years, 6 months
[libvirt] [PATCH] RPC: Support up to 4096 cpus on the host and 256 in the guest
by Peter Krempa
The RPC limits for cpu maps didn't allow to use libvirt on ultra big
boxes. This patch increases size of the limits to support a maximum of
4096 cpus on the host with the built-in maximum of 256 cpus per guest.
The full cpu map of such a system takes 128 kilobytes and the map for
vcpu pinning is 512 bytes long.
---
src/remote/remote_protocol.x | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/src/remote/remote_protocol.x b/src/remote/remote_protocol.x
index 1ebbce7..a94e0db 100644
--- a/src/remote/remote_protocol.x
+++ b/src/remote/remote_protocol.x
@@ -82,13 +82,13 @@ const REMOTE_DOMAIN_ID_LIST_MAX = 16384;
const REMOTE_DOMAIN_NAME_LIST_MAX = 16384;
/* Upper limit on cpumap (bytes) passed to virDomainPinVcpu. */
-const REMOTE_CPUMAP_MAX = 256;
+const REMOTE_CPUMAP_MAX = 512;
/* Upper limit on number of info fields returned by virDomainGetVcpus. */
-const REMOTE_VCPUINFO_MAX = 2048;
+const REMOTE_VCPUINFO_MAX = 4096;
/* Upper limit on cpumaps (bytes) passed to virDomainGetVcpus. */
-const REMOTE_CPUMAPS_MAX = 16384;
+const REMOTE_CPUMAPS_MAX = 131072;
/* Upper limit on migrate cookie. */
const REMOTE_MIGRATE_COOKIE_MAX = 16384;
--
1.8.2.1
11 years, 6 months
