[libvirt] [PATCH] rbd: Use rbd_create3 to create RBD format 2 images by default
by Wido den Hollander
This new RBD format supports snapshotting and cloning. By having
libvirt create images in format 2 end-users of the created images
can benefit of the new RBD format.
Older versions of libvirt can work with this new RBD format as long
as librbd supports format 2, something that all recent versions of
librbd do.
Signed-off-by: Wido den Hollander <wido(a)widodh.nl>
---
src/storage/storage_backend_rbd.c | 23 +++++++++++++++++++++--
1 file changed, 21 insertions(+), 2 deletions(-)
diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c
index 4b6f18c..f3dd7a0 100644
--- a/src/storage/storage_backend_rbd.c
+++ b/src/storage/storage_backend_rbd.c
@@ -435,6 +435,26 @@ cleanup:
return ret;
}
+static int virStorageBackendRBDCreateImage(rados_ioctx_t io,
+ char *name, long capacity)
+{
+ int order = 0;
+ #if LIBRBD_VERSION_CODE > 260
+ uint64_t features = 3;
+ uint64_t stripe_count = 1;
+ uint64_t stripe_unit = 4194304;
+
+ if (rbd_create3(io, name, capacity, features, &order,
+ stripe_count, stripe_unit) < 0) {
+ #else
+ if (rbd_create(io, name, capacity, &order) < 0) {
+ #endif
+ return -1;
+ }
+
+ return 0;
+}
+
static int virStorageBackendRBDCreateVol(virConnectPtr conn,
virStoragePoolObjPtr pool,
virStorageVolDefPtr vol)
@@ -442,7 +462,6 @@ static int virStorageBackendRBDCreateVol(virConnectPtr conn,
virStorageBackendRBDState ptr;
ptr.cluster = NULL;
ptr.ioctx = NULL;
- int order = 0;
int ret = -1;
VIR_DEBUG("Creating RBD image %s/%s with size %llu",
@@ -467,7 +486,7 @@ static int virStorageBackendRBDCreateVol(virConnectPtr conn,
goto cleanup;
}
- if (rbd_create(ptr.ioctx, vol->name, vol->capacity, &order) < 0) {
+ if (virStorageBackendRBDCreateImage(ptr.ioctx, vol->name, vol->capacity) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("failed to create volume '%s/%s'"),
pool->def->source.name,
--
1.7.9.5
10 years, 3 months
[libvirt] [PATCH v5 0/6] Support keyboard device
by Li Zhang
From: Li Zhang <zhlcindy(a)linux.vnet.ibm.com>
This patchset is to add keyboard input device.
For PPC64, it doesn't support a default keyboard device when the graphic
is enabled. Libvirt supports QEMU command line as "-device VGA" which
won't create any keyboard device for it. So it requires libvirt to add
a default USB keyboard device for it.
This patchset is to add keyboard input device and a default USB keyboard
for PPC64.
The related discussion in QEMU community:
http://lists.nongnu.org/archive/html/qemu-devel/2013-11/msg01734.html
Li Zhang (6):
conf: Add a keyboard input device type
conf: Add one interface to add default input devices.
conf: Remove PS2 mouse device for non-X86 platforms
qemu_cap: Add USB keyboard capability
qemu: parse qemu command line for USB keyboard
Add a default USB keyboard and USB mouse for PPC64
v5 -> v4:
* Add PS/2 KBD definition in XML file. (Daniel.P.Berrange)
* Allow PS/2 KBD devices and set KBD default bus as PS2 for X86, USB for non-x86. (Daniel.P.Berrange)
* Add an implicit PS/2 KBD as PS/2 mouse. (Danniel.P.Berrange)
v4 -> v3:
* Don't remove PS2 mouse device for other virtualization drivers (Jan Tomko).
v3 -> v2:
* Handle the KBD device type in xen and QEMU driver. (Daniel.P.Berrange)
* Remove PS2 mouse device for non-X86 platforms.
* Move virDomainDefMaybeAddInput to a new patch. (Jan Tomko)
* Replace VIR_REALLOC_N with VIR_APPEND_ELEMENT. (Jan Tomoko)
* Fix several typos. (Jan Tomoko)
* Add a virReportError when QEMU_CAPS_DEVICE_USB_KBD can't be gotten. (Jan Tomoko)
v2 -> v1:
* change ifs to switch clause.
* reconstruct the patches
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_conf.c | 92 ++++++++++++++--------
src/conf/domain_conf.h | 5 ++
src/libvirt_private.syms | 1 +
src/qemu/qemu_capabilities.c | 2 +
src/qemu/qemu_capabilities.h | 1 +
src/qemu/qemu_command.c | 41 +++++++---
src/qemu/qemu_domain.c | 23 +++++-
src/util/virarch.h | 2 +
src/xenxs/xen_sxpr.c | 27 +++++--
src/xenxs/xen_xm.c | 30 +++++--
tests/qemucapabilitiesdata/caps_1.2.2-1.caps | 1 +
tests/qemucapabilitiesdata/caps_1.3.1-1.caps | 1 +
tests/qemucapabilitiesdata/caps_1.4.2-1.caps | 1 +
tests/qemucapabilitiesdata/caps_1.5.3-1.caps | 1 +
tests/qemucapabilitiesdata/caps_1.6.0-1.caps | 2 +
tests/qemucapabilitiesdata/caps_1.6.50-1.caps | 1 +
tests/qemuhelptest.c | 8 ++
.../qemuxml2argvdata/qemuxml2argv-pseries-disk.xml | 3 +-
.../qemuxml2argv-pseries-usb-kbd.args | 9 +++
.../qemuxml2argv-pseries-usb-kbd.xml | 19 +++++
tests/qemuxml2argvtest.c | 3 +
22 files changed, 212 insertions(+), 62 deletions(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-usb-kbd.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-pseries-usb-kbd.xml
--
1.8.2.1
10 years, 3 months
[libvirt] [PATCH] conf: add localtime support in guest clock with variable attibute
by Jincheng Miao
commit b8bf79a, which add clock=variable, forgets to check localtime
basis in qemuBuildClockArgStr(). So that localtime basis could not
be used, like this bug:
https://bugzilla.redhat.com/show_bug.cgi?id=1046192
---
src/qemu/qemu_command.c | 14 ++++++++++----
1 file changed, 10 insertions(+), 4 deletions(-)
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index d723dc8..749ad54 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -6490,15 +6490,21 @@ qemuBuildClockArgStr(virDomainClockDefPtr def)
time_t now = time(NULL);
struct tm nowbits;
- if (def->data.variable.basis != VIR_DOMAIN_CLOCK_BASIS_UTC) {
+ if (def->data.variable.basis == VIR_DOMAIN_CLOCK_BASIS_UTC) {
+ now += def->data.variable.adjustment;
+ gmtime_r(&now, &nowbits);
+ }
+ else if (def->data.variable.basis == VIR_DOMAIN_CLOCK_BASIS_LOCALTIME) {
+ now += def->data.variable.adjustment;
+ localtime_r(&now, &nowbits);
+ }
+ else {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported clock basis '%s'"),
virDomainClockBasisTypeToString(def->data.variable.basis));
goto error;
}
- now += def->data.variable.adjustment;
- gmtime_r(&now, &nowbits);
-
+
/* Store the guest's basedate */
def->data.variable.basedate = now;
--
1.8.3.1
10 years, 3 months
[libvirt] [PATCH] event: improve public API docs
by Eric Blake
Since libvirt 0.9.3, the entire virevent.c file has been a public
API, so improve the documentation in this file. Also, fix a
potential core dump - it could only be triggered by bogus use of
the API and would only affect the caller (not libvirtd), but we
might as well be nice.
* src/libvirt.c (virConnectDomainEventRegister)
(virConnectDomainEventRegisterAny)
(virConnectNetworkEventRegisterAny): Document event loop requirement.
* src/util/virevent.c (virEventAddHandle, virEventRemoveHandle)
(virEventAddTimeout, virEventRemoveTimeout): Likewise.
(virEventUpdateHandle, virEventUpdateTimeout): Likewise, and avoid
core dump if caller didn't register handler.
(virEventRunDefaultImpl): Expand example, and set up code block in
html docs.
(virEventRegisterImpl, virEventRegisterDefaultImpl): Document more
on the use of the event loop.
Signed-off-by: Eric Blake <eblake(a)redhat.com>
---
src/libvirt.c | 24 ++++++++++------
src/util/virevent.c | 82 +++++++++++++++++++++++++++++++++++------------------
2 files changed, 70 insertions(+), 36 deletions(-)
diff --git a/src/libvirt.c b/src/libvirt.c
index 66841c8..f43718d 100644
--- a/src/libvirt.c
+++ b/src/libvirt.c
@@ -16121,11 +16121,13 @@ error:
* @freecb: optional function to deallocate opaque when not used anymore
*
* Adds a callback to receive notifications of domain lifecycle events
- * occurring on a connection
+ * occurring on a connection. This function requires that an event loop
+ * has been previously registered with virEventRegisterImpl() or
+ * virEventRegisterDefaultImpl().
*
* Use of this method is no longer recommended. Instead applications
* should try virConnectDomainEventRegisterAny() which has a more flexible
- * API contract
+ * API contract.
*
* The virDomainPtr object handle passed into the callback upon delivery
* of an event is only valid for the duration of execution of the callback.
@@ -16134,7 +16136,7 @@ error:
* The reference can be released once the object is no longer required
* by calling virDomainFree.
*
- * Returns 0 on success, -1 on failure
+ * Returns 0 on success, -1 on failure.
*/
int
virConnectDomainEventRegister(virConnectPtr conn,
@@ -19064,10 +19066,12 @@ error:
* @freecb: optional function to deallocate opaque when not used anymore
*
* Adds a callback to receive notifications of arbitrary domain events
- * occurring on a domain.
+ * occurring on a domain. This function requires that an event loop
+ * has been previously registered with virEventRegisterImpl() or
+ * virEventRegisterDefaultImpl().
*
* If @dom is NULL, then events will be monitored for any domain. If @dom
- * is non-NULL, then only the specific domain will be monitored
+ * is non-NULL, then only the specific domain will be monitored.
*
* Most types of event have a callback providing a custom set of parameters
* for the event. When registering an event, it is thus necessary to use
@@ -19085,7 +19089,7 @@ error:
* for the callback. To unregister a callback, this callback ID should
* be passed to the virConnectDomainEventDeregisterAny() method.
*
- * Returns a callback identifier on success, -1 on failure
+ * Returns a callback identifier on success, -1 on failure.
*/
int
virConnectDomainEventRegisterAny(virConnectPtr conn,
@@ -19183,10 +19187,12 @@ error:
* @freecb: optional function to deallocate opaque when not used anymore
*
* Adds a callback to receive notifications of arbitrary network events
- * occurring on a network.
+ * occurring on a network. This function requires that an event loop
+ * has been previously registered with virEventRegisterImpl() or
+ * virEventRegisterDefaultImpl().
*
* If @net is NULL, then events will be monitored for any network. If @net
- * is non-NULL, then only the specific network will be monitored
+ * is non-NULL, then only the specific network will be monitored.
*
* Most types of event have a callback providing a custom set of parameters
* for the event. When registering an event, it is thus necessary to use
@@ -19204,7 +19210,7 @@ error:
* for the callback. To unregister a callback, this callback ID should
* be passed to the virConnectNetworkEventDeregisterAny() method.
*
- * Returns a callback identifier on success, -1 on failure
+ * Returns a callback identifier on success, -1 on failure.
*/
int
virConnectNetworkEventRegisterAny(virConnectPtr conn,
diff --git a/src/util/virevent.c b/src/util/virevent.c
index fde29a2..0c94946 100644
--- a/src/util/virevent.c
+++ b/src/util/virevent.c
@@ -37,6 +37,16 @@ static virEventAddTimeoutFunc addTimeoutImpl = NULL;
static virEventUpdateTimeoutFunc updateTimeoutImpl = NULL;
static virEventRemoveTimeoutFunc removeTimeoutImpl = NULL;
+
+/*****************************************************
+ *
+ * Below this point are *PUBLIC* APIs for event
+ * loop integration with applications using libvirt.
+ * These API contracts cannot be changed.
+ *
+ *****************************************************/
+
+
/**
* virEventAddHandle:
*
@@ -46,10 +56,12 @@ static virEventRemoveTimeoutFunc removeTimeoutImpl = NULL;
* @opaque: user data to pass to callback
* @ff: callback to free opaque when handle is removed
*
- * Register a callback for monitoring file handle events.
+ * Register a callback for monitoring file handle events. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
* Returns -1 if the file handle cannot be registered, otherwise a handle
- * watch number to be used for updating and unregistering for events
+ * watch number to be used for updating and unregistering for events.
*/
int
virEventAddHandle(int fd,
@@ -70,14 +82,17 @@ virEventAddHandle(int fd,
* @watch: watch whose file handle to update
* @events: bitset of events to watch from virEventHandleType constants
*
- * Change event set for a monitored file handle.
+ * Change event set for a monitored file handle. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
- * Will not fail if fd exists
+ * Will not fail if fd exists.
*/
void
virEventUpdateHandle(int watch, int events)
{
- updateHandleImpl(watch, events);
+ if (updateHandleImpl)
+ updateHandleImpl(watch, events);
}
/**
@@ -85,7 +100,9 @@ virEventUpdateHandle(int watch, int events)
*
* @watch: watch whose file handle to remove
*
- * Unregister a callback from a file handle.
+ * Unregister a callback from a file handle. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
* Returns -1 if the file handle was not registered, 0 upon success.
*/
@@ -106,7 +123,9 @@ virEventRemoveHandle(int watch)
* @opaque: user data to pass to callback
* @ff: callback to free opaque when timeout is removed
*
- * Register a callback for a timer event.
+ * Register a callback for a timer event. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
* Setting timeout to -1 will disable the timer. Setting the timeout
* to zero will cause it to fire on every event loop iteration.
@@ -132,17 +151,20 @@ virEventAddTimeout(int timeout,
* @timer: timer id to change
* @timeout: time between events in milliseconds
*
- * Change frequency for a timer.
+ * Change frequency for a timer. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
* Setting frequency to -1 will disable the timer. Setting the frequency
* to zero will cause it to fire on every event loop iteration.
*
- * Will not fail if timer exists
+ * Will not fail if timer exists.
*/
void
virEventUpdateTimeout(int timer, int timeout)
{
- updateTimeoutImpl(timer, timeout);
+ if (updateTimeoutImpl)
+ updateTimeoutImpl(timer, timeout);
}
/**
@@ -150,7 +172,9 @@ virEventUpdateTimeout(int timer, int timeout)
*
* @timer: the timer id to remove
*
- * Unregister a callback for a timer.
+ * Unregister a callback for a timer. This function
+ * requires that an event loop has previously been registered with
+ * virEventRegisterImpl() or virEventRegisterDefaultImpl().
*
* Returns -1 if the timer was not registered, 0 upon success.
*/
@@ -164,14 +188,6 @@ virEventRemoveTimeout(int timer)
}
-/*****************************************************
- *
- * Below this point are 3 *PUBLIC* APIs for event
- * loop integration with applications using libvirt.
- * These API contracts cannot be changed.
- *
- *****************************************************/
-
/**
* virEventRegisterImpl:
* @addHandle: the callback to add fd handles
@@ -186,9 +202,14 @@ virEventRemoveTimeout(int timer)
* to integrate with the libglib2 event loop, or libevent
* or the QT event loop.
*
+ * Use of the virEventAddHandle() and similar APIs require that the
+ * corresponding handler be registered. Use of the
+ * virConnectDomainEventRegisterAny() and similar APIs requires that
+ * the three timeout handlers be registered.
+ *
* If an application does not need to integrate with an
* existing event loop implementation, then the
- * virEventRegisterDefaultImpl method can be used to setup
+ * virEventRegisterDefaultImpl() method can be used to setup
* the generic libvirt implementation.
*/
void virEventRegisterImpl(virEventAddHandleFunc addHandle,
@@ -220,9 +241,12 @@ void virEventRegisterImpl(virEventAddHandleFunc addHandle,
* not have a need to integrate with an external event
* loop impl.
*
- * Once registered, the application has to invoke virEventRunDefaultImpl in
+ * Once registered, the application has to invoke virEventRunDefaultImpl() in
* a loop to process events. Failure to do so may result in connections being
- * closed unexpectedly as a result of keepalive timeout.
+ * closed unexpectedly as a result of keepalive timeout. The default
+ * event loop fully supports handle and and timeout events, but only
+ * wakes up on events registered by libvirt API calls such as
+ * virEventAddHandle() or virConnectDomainEventRegisterAny().
*
* Returns 0 on success, -1 on failure.
*/
@@ -255,14 +279,18 @@ int virEventRegisterDefaultImpl(void)
*
* Run one iteration of the event loop. Applications
* will generally want to have a thread which invokes
- * this method in an infinite loop
+ * this method in an infinite loop. Furthermore, it is wise
+ * to set up a pipe-to-self handler (via virEventAddHandle())
+ * or a timeout (via virEventAddTimeout()) before calling this
+ * function, as it will block forever if there are no
+ * registered events.
*
- * static bool quit = false;
+ * static bool quit = false;
*
- * while (!quit) {
- * if (virEventRunDefaultImpl() < 0)
+ * while (!quit) {
+ * if (virEventRunDefaultImpl() < 0)
* ...print error...
- * }
+ * }
*
* Returns 0 on success, -1 on failure.
*/
--
1.8.4.2
10 years, 3 months
[libvirt] [RFC PATCH] libvirt support to force convergence of live guest migration
by Chegu Vinod
Busy enterprise workloads hosted on large sized VM's tend to dirty
memory faster than the transfer rate achieved via live guest migration.
Despite some good recent improvements (& using dedicated 10Gig NICs
between hosts) the live migration may NOT converge.
Recently support was added in qemu (version 1.6) to allow a user to
choose if they wish to force convergence of their migration via a
new migration capability : "auto-converge". This feature allows for qemu
to auto-detect lack of convergence and trigger a throttle-down of the
VCPUs.
This RFC patch includes the libvirt support needed to trigger this
feature. (Testing is still in progress)
Signed-off-by: Chegu Vinod <chegu_vinod(a)hp.com>
---
include/libvirt/libvirt.h.in | 1 +
src/qemu/qemu_migration.c | 44 ++++++++++++++++++++++++++++++++++++++++++
src/qemu/qemu_migration.h | 1 +
src/qemu/qemu_monitor.c | 2 +-
src/qemu/qemu_monitor.h | 1 +
tools/virsh-domain.c | 7 ++++++
6 files changed, 55 insertions(+), 1 deletions(-)
diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in
index 146a59b..13b0bfc 100644
--- a/include/libvirt/libvirt.h.in
+++ b/include/libvirt/libvirt.h.in
@@ -1192,6 +1192,7 @@ typedef enum {
VIR_MIGRATE_OFFLINE = (1 << 10), /* offline migrate */
VIR_MIGRATE_COMPRESSED = (1 << 11), /* compress data during migration */
VIR_MIGRATE_ABORT_ON_ERROR = (1 << 12), /* abort migration on I/O errors happened during migration */
+ VIR_MIGRATE_AUTO_CONVERGE = (1 << 13), /* force auto-convergence during during migration */
} virDomainMigrateFlags;
diff --git a/src/qemu/qemu_migration.c b/src/qemu/qemu_migration.c
index e87ea85..8cc0c56 100644
--- a/src/qemu/qemu_migration.c
+++ b/src/qemu/qemu_migration.c
@@ -1565,6 +1565,40 @@ cleanup:
}
static int
+qemuMigrationSetAutoConverge(virQEMUDriverPtr driver,
+ virDomainObjPtr vm,
+ enum qemuDomainAsyncJob job)
+{
+ qemuDomainObjPrivatePtr priv = vm->privateData;
+ int ret;
+
+ if (qemuDomainObjEnterMonitorAsync(driver, vm, job) < 0)
+ return -1;
+
+ ret = qemuMonitorGetMigrationCapability(
+ priv->mon,
+ QEMU_MONITOR_MIGRATION_CAPS_AUTO_CONVERGE);
+
+ if (ret < 0) {
+ goto cleanup;
+ } else if (ret == 0) {
+ virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, "%s",
+ _("Auto-Converge migration is not supported by "
+ "QEMU binary"));
+ ret = -1;
+ goto cleanup;
+ }
+
+ ret = qemuMonitorSetMigrationCapability(
+ priv->mon,
+ QEMU_MONITOR_MIGRATION_CAPS_AUTO_CONVERGE);
+
+cleanup:
+ qemuDomainObjExitMonitor(driver, vm);
+ return ret;
+}
+
+static int
qemuMigrationWaitForSpice(virQEMUDriverPtr driver,
virDomainObjPtr vm)
{
@@ -2389,6 +2423,11 @@ qemuMigrationPrepareAny(virQEMUDriverPtr driver,
QEMU_ASYNC_JOB_MIGRATION_IN) < 0)
goto stop;
+ if (flags & VIR_MIGRATE_AUTO_CONVERGE &&
+ qemuMigrationSetAutoConverge(driver, vm,
+ QEMU_ASYNC_JOB_MIGRATION_IN) < 0)
+ goto stop;
+
if (mig->lockState) {
VIR_DEBUG("Received lockstate %s", mig->lockState);
VIR_FREE(priv->lockState);
@@ -3181,6 +3220,11 @@ qemuMigrationRun(virQEMUDriverPtr driver,
QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
goto cleanup;
+ if (flags & VIR_MIGRATE_AUTO_CONVERGE &&
+ qemuMigrationSetAutoConverge(driver, vm,
+ QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
+ goto cleanup;
+
if (qemuDomainObjEnterMonitorAsync(driver, vm,
QEMU_ASYNC_JOB_MIGRATION_OUT) < 0)
goto cleanup;
diff --git a/src/qemu/qemu_migration.h b/src/qemu/qemu_migration.h
index cafa2a2..c4258a1 100644
--- a/src/qemu/qemu_migration.h
+++ b/src/qemu/qemu_migration.h
@@ -39,6 +39,7 @@
VIR_MIGRATE_UNSAFE | \
VIR_MIGRATE_OFFLINE | \
VIR_MIGRATE_COMPRESSED | \
+ VIR_MIGRATE_AUTO_CONVERGE | \
VIR_MIGRATE_ABORT_ON_ERROR)
/* All supported migration parameters and their types. */
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 1514715..780a29a 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -118,7 +118,7 @@ VIR_ENUM_IMPL(qemuMonitorMigrationStatus,
VIR_ENUM_IMPL(qemuMonitorMigrationCaps,
QEMU_MONITOR_MIGRATION_CAPS_LAST,
- "xbzrle")
+ "xbzrle", "auto-converge")
VIR_ENUM_IMPL(qemuMonitorVMStatus,
QEMU_MONITOR_VM_STATUS_LAST,
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index eabf000..95e70ab 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -440,6 +440,7 @@ int qemuMonitorGetSpiceMigrationStatus(qemuMonitorPtr mon,
typedef enum {
QEMU_MONITOR_MIGRATION_CAPS_XBZRLE,
+ QEMU_MONITOR_MIGRATION_CAPS_AUTO_CONVERGE,
QEMU_MONITOR_MIGRATION_CAPS_LAST
} qemuMonitorMigrationCaps;
diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c
index 1fe138c..d94a81b 100644
--- a/tools/virsh-domain.c
+++ b/tools/virsh-domain.c
@@ -8532,6 +8532,10 @@ static const vshCmdOptDef opts_migrate[] = {
.type = VSH_OT_BOOL,
.help = N_("compress repeated pages during live migration")
},
+ {.name = "auto-converge",
+ .type = VSH_OT_BOOL,
+ .help = N_("force auto convergence during live migration")
+ },
{.name = "abort-on-error",
.type = VSH_OT_BOOL,
.help = N_("abort on soft errors during migration")
@@ -8676,6 +8680,9 @@ doMigrate(void *opaque)
if (vshCommandOptBool(cmd, "compressed"))
flags |= VIR_MIGRATE_COMPRESSED;
+ if (vshCommandOptBool(cmd, "auto-converge"))
+ flags |= VIR_MIGRATE_AUTO_CONVERGE;
+
if (vshCommandOptBool(cmd, "offline")) {
flags |= VIR_MIGRATE_OFFLINE;
}
--
1.7.1
10 years, 3 months
[libvirt] [PATCH] network: only prevent forwarding of DNS requests for unqualified names
by Laine Stump
In commit f386825 we began adding the option "--local=/$mydomain/" to
all dnsmasq commandlines (later changed to "local=/$mydomain/" when we
moved the options from the commandline to a conf file) with the stated
reason of preventing forwarding of DNS queries for names that weren't
fully qualified domain names ("FQDN", i.e. a name that included some
"."s and a domain name).
The original patch on the list, and discussion about it, is here:
https://www.redhat.com/archives/libvir-list/2012-August/msg01594.html
When a domain name isn't specified (no <domain> element in the network
definition), the corresponding addition of "local=//" will prevent
forwarding of domain-less requests to the virtualization host's DNS
resolver, but if a domain *is* specified, the addition of
"local=/domain/" will prevent forwarding of any requests for names
within that domain that aren't resolvable by libvirt's dnsmasq itself.
An example of the problems this causes: let's say a network is
defined with:
<domain name='example.com'/>
<dhcp>
..
<host mac='52:54:00:11:22:33' ip='1.2.3.4' name='myguest'/>
</dhcp>
This results in "local=/example.com/" being added to the dnsmasq options.
If a guest requests "myguest" or "myguest.example.com", that will be
resolved by dnsmasq. If the guest asks for "www.example.com", dnsmasq
will not know the answer, but instead of forwarding it to the host, it
will return NOT FOUND to the guest. In most cases that isn't the
behavior an admin is looking for.
Really we should have been just including the option "--local=//" in
all cases, so that (unresolvable by dnsmasq) requests for names
without a domain would be treated as "local to dnsmasq" and not
forwarded, but all other requests would be forwarded. That's what this
patch does.
---
I'm debating whether there is any value at all to maintaining the
previous behavior of "don't forward unresolved requests for hosts in
the network's defined domain", or if it should just be considered
purely a bug. If so, I think it shouldn't be the default behavior, and
should be controlled by a new attribute to the <domain> element,
something like this:
<domain name='example.com' forwardUnresolved='no'/>
(this would default to yes). Any opinions on 1) whether or not this is
needed, and 2) if so, any better name for the option? (it would be nice if it could default to 'no' or 'local-only' (which was == 0) or something else that didn't require a non-0 default or a strange double-negative name).
src/network/bridge_driver.c | 12 +++++-------
tests/networkxml2confdata/dhcp6-network.conf | 2 +-
tests/networkxml2confdata/nat-network-dns-hosts.conf | 2 +-
tests/networkxml2confdata/netboot-network.conf | 2 +-
tests/networkxml2confdata/netboot-proxy-network.conf | 2 +-
5 files changed, 9 insertions(+), 11 deletions(-)
diff --git a/src/network/bridge_driver.c b/src/network/bridge_driver.c
index 80c5acb..b1382e4 100644
--- a/src/network/bridge_driver.c
+++ b/src/network/bridge_driver.c
@@ -723,14 +723,12 @@ networkDnsmasqConfContents(virNetworkObjPtr network,
network->def->domain);
}
- if (network->def->domain || !network->def->dns.forwardPlainNames) {
- /* need to specify local even if no domain specified, unless
- * the config says we should forward "plain" names (i.e. not
- * fully qualified, no '.' characters)
+ if (!network->def->dns.forwardPlainNames) {
+ /* need to specify local=// whether or not a domain is
+ * specified, unless the config says we should forward "plain"
+ * names (i.e. not fully qualified, no '.' characters)
*/
- virBufferAsprintf(&configbuf,
- "local=/%s/\n",
- network->def->domain ? network->def->domain : "");
+ virBufferAsprintf(&configbuf, "local=//\n");
}
if (pidfile)
diff --git a/tests/networkxml2confdata/dhcp6-network.conf b/tests/networkxml2confdata/dhcp6-network.conf
index 5fde07f..24ac7fa 100644
--- a/tests/networkxml2confdata/dhcp6-network.conf
+++ b/tests/networkxml2confdata/dhcp6-network.conf
@@ -8,7 +8,7 @@ strict-order
domain-needed
domain=mynet
expand-hosts
-local=/mynet/
+local=//
except-interface=lo
bind-dynamic
interface=virbr0
diff --git a/tests/networkxml2confdata/nat-network-dns-hosts.conf b/tests/networkxml2confdata/nat-network-dns-hosts.conf
index 2577882..bb1d5f4 100644
--- a/tests/networkxml2confdata/nat-network-dns-hosts.conf
+++ b/tests/networkxml2confdata/nat-network-dns-hosts.conf
@@ -8,7 +8,7 @@ strict-order
domain-needed
domain=example.com
expand-hosts
-local=/example.com/
+local=//
except-interface=lo
bind-dynamic
interface=virbr0
diff --git a/tests/networkxml2confdata/netboot-network.conf b/tests/networkxml2confdata/netboot-network.conf
index b6f3c23..37fef40 100644
--- a/tests/networkxml2confdata/netboot-network.conf
+++ b/tests/networkxml2confdata/netboot-network.conf
@@ -8,7 +8,7 @@ strict-order
domain-needed
domain=example.com
expand-hosts
-local=/example.com/
+local=//
except-interface=lo
bind-interfaces
listen-address=192.168.122.1
diff --git a/tests/networkxml2confdata/netboot-proxy-network.conf b/tests/networkxml2confdata/netboot-proxy-network.conf
index 1e969fa..ae34aa0 100644
--- a/tests/networkxml2confdata/netboot-proxy-network.conf
+++ b/tests/networkxml2confdata/netboot-proxy-network.conf
@@ -8,7 +8,7 @@ strict-order
domain-needed
domain=example.com
expand-hosts
-local=/example.com/
+local=//
except-interface=lo
bind-interfaces
listen-address=192.168.122.1
--
1.8.3.1
10 years, 3 months
[libvirt] fix/re-do query-command-line-options
by Amos Kong
Hi QEMU/Libvirt list,
When I worked on query-command-line-options, I first used some marcos [1] to
generate two config & option tables. This will cover all the options,
but it returns a string, it's difficult for libvirt to parse and use
it.
Finally I got a suggestion to read info from new interface (QemuOpts),
We add opts info to vm_config_groups[], query-command-line-options
will visit the array. It doesn't conver all the options, but the
latest options are covered, so this implementation is acceptable.
Problem:
* QemuOpts was designed just for options with parameter, some new option
without parameters is lost in query output (eg: -enable-fips)
* block drive uses three QemuOpts, it's legacy issue.
* QemuOpts of some options aren't updated, it might be difficult to
updated when we add some new parameters
* other
We discussed to reimplement this command, but it seems DEF maroc is the
only point to cover all the options, all the options are described in
qemu-options.hx
I'm considering to reuse the DEF marocs to generate a table, try to
return the crude info if QemuOpts doesn't cover it.
Or maintain a split array (like vm_config_groups[]), it only contains
the option without parameter (option name & help info).
If you touched some problem of the query-command-line-options, welcome
to reply it, I will try to satisfy your requests.
Thanks, Amos
[1] http://www.redhat.com/archives/libvir-list/2013-January/msg01656.html
|#elif defined(QEMU_OPTIONS_GENERATE_CONFIG)
|
|#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
| opt_help,
|
|#define DEFHEADING(text)
|#define ARCHHEADING(text, arch_mask)
|
|#elif defined(QEMU_OPTIONS_GENERATE_NAME)
|
|#define DEF(option, opt_arg, opt_enum, opt_help, arch_mask) \
| option,
|
|#define DEFHEADING(text)
|#define ARCHHEADING(text, arch_mask)
char const *optionstr[] = {
#define QEMU_OPTIONS_GENERATE_NAME
#include "qemu-options-wrapper.h"
};
char const *configstr[] = {
#define QEMU_OPTIONS_GENERATE_CONFIG
#include "qemu-options-wrapper.h"
};
--
Amos.
10 years, 3 months
[libvirt] [PATCH] docs: add a permalink to html headers
by Dan Kenigsberg
Quite often, I need to cite URLs like
http://libvirt.org/formatnetwork.html#elementQoS
but it is annoying to copy them from the table of contents or the html
source.
This patch borrows from the Python documentation in order to make it
easier to cite headers on libvirt's oneline documentation.
---
docs/libvirt.css | 13 +++++++++++++
docs/page.xsl | 7 +++++++
2 files changed, 20 insertions(+)
diff --git a/docs/libvirt.css b/docs/libvirt.css
index b324ac8..1d27873 100644
--- a/docs/libvirt.css
+++ b/docs/libvirt.css
@@ -498,3 +498,16 @@ div.description pre.code {
padding: 5px 10px 5px 10px;
margin-left: 2.5em;
}
+
+a.headerlink {
+ text-decoration: none!important;
+ visibility: hidden;
+}
+
+h2:hover > a.headerlink,
+h3:hover > a.headerlink,
+h4:hover > a.headerlink,
+h5:hover > a.headerlink,
+h6:hover > a.headerlink {
+ visibility: visible;
+}
diff --git a/docs/page.xsl b/docs/page.xsl
index a2da854..107f6e2 100644
--- a/docs/page.xsl
+++ b/docs/page.xsl
@@ -185,4 +185,11 @@
<xsl:apply-templates select="exsl:node-set($inchtml)/html:html/html:body/*" mode="content"/>
</xsl:template>
+
+ <xsl:template match="html:h2 | html:h3 | html:h4 | html:h5 | html:h6" mode="content">
+ <xsl:copy>
+ <xsl:copy-of select="./*"/>
+ <a class="headerlink" href="#{html:a/@name}" title="Permalink to this headline">¶</a>
+ </xsl:copy>
+ </xsl:template>
</xsl:stylesheet>
--
1.8.3.1
10 years, 3 months
[libvirt] [PATCH] Fix segmentation fault when accessing default qemu machine type
by Yudai Yamagishi
From: Yudai Yamagish <yummy(a)sfc.wide.ad.jp>
This patch fixes a segmentation fault when creating new virtual machines using QEMU.
The segmentation fault is caused by commit f41830680e40d3ec845cefd25419bd87414b9ccf
and commit cbb6ec42e2447d7920b30d66923b2a2b2670133b.
In virQEMUCapsProbeQMPMachineTypes, when copying machines to qemuCaps, "none" is skipped.
Therefore, the value of i and "qemuCaps->nmachineTypes - 1" do not always match.
However, defIdx value (used to call virQEMUCapsSetDefaultMachine) is set using the value in i
when the array elements are in qemuCaps->nmachineTypes - 1.
So, when libvirt tries to create virtual machines using the default machine type,
qemuCaps->machineTypes[defIdx] is accessed and since the defIdx is NULL, it results in segmentation fault.
Signed-off-by: Yudai Yamagishi <yummy(a)sfc.wide.ad.jp>
---
src/qemu/qemu_capabilities.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 5e9c65e..5def55c 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -2150,7 +2150,7 @@ virQEMUCapsProbeQMPMachineTypes(virQEMUCapsPtr qemuCaps,
machines[i]->name) < 0)
goto cleanup;
if (machines[i]->isDefault)
- defIdx = i;
+ defIdx = qemuCaps->nmachineTypes - 1;
qemuCaps->machineMaxCpus[qemuCaps->nmachineTypes - 1] =
machines[i]->maxCpus;
}
--
1.7.2.5
10 years, 3 months
