[libvirt] [PATCH] Fix compile error for stable 1.2.9
by Yang hongyang
Seems a backport miss. An extra member is passed to struct
virLXCBasicMountInfo.
Signed-off-by: Yang hongyang <hongyang.yang(a)easystack.cn>
---
src/lxc/lxc_container.c | 2 +-
1 files changed, 1 insertions(+), 1 deletions(-)
diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c
index 28dabec..1c65fa9 100644
--- a/src/lxc/lxc_container.c
+++ b/src/lxc/lxc_container.c
@@ -760,7 +760,7 @@ typedef struct {
static const virLXCBasicMountInfo lxcBasicMounts[] = {
{ "proc", "/proc", "proc", MS_NOSUID|MS_NOEXEC|MS_NODEV, false, false },
- { "/proc/sys", "/proc/sys", NULL, MS_BIND|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, false, false, false },
+ { "/proc/sys", "/proc/sys", NULL, MS_BIND|MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, false, false },
{ "sysfs", "/sys", "sysfs", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, false, false },
{ "securityfs", "/sys/kernel/security", "securityfs", MS_NOSUID|MS_NOEXEC|MS_NODEV|MS_RDONLY, true, true },
#if WITH_SELINUX
--
1.7.1
6 months, 2 weeks
[libvirt] Supporting vhost-net and macvtap in libvirt for QEMU
by Anthony Liguori
Disclaimer: I am neither an SR-IOV nor a vhost-net expert, but I've CC'd
people that are who can throw tomatoes at me for getting bits wrong :-)
I wanted to start a discussion about supporting vhost-net in libvirt.
vhost-net has not yet been merged into qemu but I expect it will be soon
so it's a good time to start this discussion.
There are two modes worth supporting for vhost-net in libvirt. The
first mode is where vhost-net backs to a tun/tap device. This is
behaves in very much the same way that -net tap behaves in qemu today.
Basically, the difference is that the virtio backend is in the kernel
instead of in qemu so there should be some performance improvement.
Current, libvirt invokes qemu with -net tap,fd=X where X is an already
open fd to a tun/tap device. I suspect that after we merge vhost-net,
libvirt could support vhost-net in this mode by just doing -net
vhost,fd=X. I think the only real question for libvirt is whether to
provide a user visible switch to use vhost or to just always use vhost
when it's available and it makes sense. Personally, I think the later
makes sense.
The more interesting invocation of vhost-net though is one where the
vhost-net device backs directly to a physical network card. In this
mode, vhost should get considerably better performance than the current
implementation. I don't know the syntax yet, but I think it's
reasonable to assume that it will look something like -net
tap,dev=eth0. The effect will be that eth0 is dedicated to the guest.
On most modern systems, there is a small number of network devices so
this model is not all that useful except when dealing with SR-IOV
adapters. In that case, each physical device can be exposed as many
virtual devices (VFs). There are a few restrictions here though. The
biggest is that currently, you can only change the number of VFs by
reloading a kernel module so it's really a parameter that must be set at
startup time.
I think there are a few ways libvirt could support vhost-net in this
second mode. The simplest would be to introduce a new tag similar to
<source network='br0'>. In fact, if you probed the device type for the
network parameter, you could probably do something like <source
network='eth0'> and have it Just Work.
Another model would be to have libvirt see an SR-IOV adapter as a
network pool whereas it handled all of the VF management. Considering
how inflexible SR-IOV is today, I'm not sure whether this is the best model.
Has anyone put any more thought into this problem or how this should be
modeled in libvirt? Michael, could you share your current thinking for
-net syntax?
--
Regards,
Anthony Liguori
6 months, 2 weeks
[libvirt] [PATCH v4 0/8] Virtio-crypto device support
by Longpeng(Mike)
As virtio-crypto has been supported in QEMU 2.8 and the frontend
driver has been merged in linux 4.10, so it's necessary to support
virtio-crypto in libvirt.
---
Changes since v3:
- spilt the capabilities part into a separate patch. [Boris]
- include Boris's virtio-crypto ccw support(PATCH 6 & 8). [Boris]
- add the missing capabilities in caps_2.9.0.x86_64.xml. [Boris]
- fix Indentation and missing virDomainCryptoDefFree. [Marc]
Changes since v2:
- PATCH 1: modify docs as Martin & Boris's suggestion. [Martin & Boris]
- PATCH 2: add the missing 'ToString'. [Martin]
- PATCH 3: use virAsprintf instead of virBufferAsprintf. [Martin]
remove pointless virBufferCheckError. [Martin]
- rebase on master. [Longpeng]
Changes since v1:
- split patch [Martin]
- rebase on master [Martin]
- add docs/tests/schema [Martin]
- fix typos [Gonglei]
---
Boris Fiuczynski (2):
qemu: virtio-crypto: add ccw support
qemu: virtio-crypto: add test for ccw support
Longpeng(Mike) (6):
docs: schema: Add basic documentation for the virtual
docs: news: Add virtio-crypto devices
conf: Parse virtio-crypto in the domain XML
caps: Add qemu capabilities about virtio-crypto
qemu: Implement support for 'builtin' backend for virtio-crypto
tests: Add testcase for virtio-crypto parsing
docs/formatdomain.html.in | 61 ++++++
docs/news.xml | 10 +
docs/schemas/domaincommon.rng | 30 +++
src/conf/domain_conf.c | 213 ++++++++++++++++++++-
src/conf/domain_conf.h | 32 ++++
src/libvirt_private.syms | 5 +
src/qemu/qemu_alias.c | 20 ++
src/qemu/qemu_alias.h | 3 +
src/qemu/qemu_capabilities.c | 6 +
src/qemu/qemu_capabilities.h | 4 +
src/qemu/qemu_command.c | 130 +++++++++++++
src/qemu/qemu_command.h | 3 +
src/qemu/qemu_domain_address.c | 25 +++
src/qemu/qemu_driver.c | 6 +
src/qemu/qemu_hotplug.c | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 2 +
tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 2 +
tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 2 +
.../qemuxml2argv-virtio-crypto-builtin.xml | 26 +++
.../qemuxml2argv-virtio-crypto-ccw.args | 22 +++
.../qemuxml2argv-virtio-crypto-ccw.xml | 16 ++
.../qemuxml2argv-virtio-crypto.args | 22 +++
tests/qemuxml2argvtest.c | 6 +
.../qemuxml2xmlout-virtio-crypto-builtin.xml | 31 +++
tests/qemuxml2xmltest.c | 2 +
25 files changed, 679 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-crypto-builtin.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-crypto-ccw.args
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-crypto-ccw.xml
create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-virtio-crypto.args
create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-virtio-crypto-builtin.xml
--
1.8.3.1
5 years, 5 months
[libvirt] [PATCH] qemu: Honour <on_reboot/>
by Michal Privoznik
https://bugzilla.redhat.com/show_bug.cgi?id=1476866
For some reason, we completely ignore <on_reboot/> setting for
domains. The implementation is simply not there. It never was.
However, things are slightly more complicated. QEMU sends us two
RESET events on domain reboot. Fortunately, the event contains
this 'guest' field telling us who initiated the reboot. And since
we don't want to destroy the domain if the reset is initiated by
a user, we have to ignore those events. Whatever, just look at
the code.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
src/qemu/qemu_domain.h | 1 +
src/qemu/qemu_monitor.c | 4 ++--
src/qemu/qemu_monitor.h | 3 ++-
src/qemu/qemu_monitor_json.c | 8 +++++++-
src/qemu/qemu_process.c | 34 ++++++++++++++++++++++++++++++----
5 files changed, 42 insertions(+), 8 deletions(-)
diff --git a/src/qemu/qemu_domain.h b/src/qemu/qemu_domain.h
index 4c9050aff..d865e67c7 100644
--- a/src/qemu/qemu_domain.h
+++ b/src/qemu/qemu_domain.h
@@ -233,6 +233,7 @@ struct _qemuDomainObjPrivate {
bool agentError;
bool gotShutdown;
+ bool gotReset;
bool beingDestroyed;
char *pidfile;
diff --git a/src/qemu/qemu_monitor.c b/src/qemu/qemu_monitor.c
index 19082d8bf..8f81a2b28 100644
--- a/src/qemu/qemu_monitor.c
+++ b/src/qemu/qemu_monitor.c
@@ -1344,12 +1344,12 @@ qemuMonitorEmitShutdown(qemuMonitorPtr mon, virTristateBool guest)
int
-qemuMonitorEmitReset(qemuMonitorPtr mon)
+qemuMonitorEmitReset(qemuMonitorPtr mon, virTristateBool guest)
{
int ret = -1;
VIR_DEBUG("mon=%p", mon);
- QEMU_MONITOR_CALLBACK(mon, ret, domainReset, mon->vm);
+ QEMU_MONITOR_CALLBACK(mon, ret, domainReset, mon->vm, guest);
return ret;
}
diff --git a/src/qemu/qemu_monitor.h b/src/qemu/qemu_monitor.h
index 31f7e97ba..8c33f6783 100644
--- a/src/qemu/qemu_monitor.h
+++ b/src/qemu/qemu_monitor.h
@@ -134,6 +134,7 @@ typedef int (*qemuMonitorDomainShutdownCallback)(qemuMonitorPtr mon,
void *opaque);
typedef int (*qemuMonitorDomainResetCallback)(qemuMonitorPtr mon,
virDomainObjPtr vm,
+ virTristateBool guest,
void *opaque);
typedef int (*qemuMonitorDomainPowerdownCallback)(qemuMonitorPtr mon,
virDomainObjPtr vm,
@@ -346,7 +347,7 @@ int qemuMonitorEmitEvent(qemuMonitorPtr mon, const char *event,
long long seconds, unsigned int micros,
const char *details);
int qemuMonitorEmitShutdown(qemuMonitorPtr mon, virTristateBool guest);
-int qemuMonitorEmitReset(qemuMonitorPtr mon);
+int qemuMonitorEmitReset(qemuMonitorPtr mon, virTristateBool guest);
int qemuMonitorEmitPowerdown(qemuMonitorPtr mon);
int qemuMonitorEmitStop(qemuMonitorPtr mon);
int qemuMonitorEmitResume(qemuMonitorPtr mon);
diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c
index b8a68154a..8a1501ced 100644
--- a/src/qemu/qemu_monitor_json.c
+++ b/src/qemu/qemu_monitor_json.c
@@ -536,7 +536,13 @@ static void qemuMonitorJSONHandleShutdown(qemuMonitorPtr mon, virJSONValuePtr da
static void qemuMonitorJSONHandleReset(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
{
- qemuMonitorEmitReset(mon);
+ bool guest = false;
+ virTristateBool guest_initiated = VIR_TRISTATE_BOOL_ABSENT;
+
+ if (data && virJSONValueObjectGetBoolean(data, "guest", &guest) == 0)
+ guest_initiated = guest ? VIR_TRISTATE_BOOL_YES : VIR_TRISTATE_BOOL_NO;
+
+ qemuMonitorEmitReset(mon, guest_initiated);
}
static void qemuMonitorJSONHandlePowerdown(qemuMonitorPtr mon, virJSONValuePtr data ATTRIBUTE_UNUSED)
diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c
index 0aecce3b1..889efc7f0 100644
--- a/src/qemu/qemu_process.c
+++ b/src/qemu/qemu_process.c
@@ -478,27 +478,51 @@ qemuProcessFindVolumeQcowPassphrase(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
static int
qemuProcessHandleReset(qemuMonitorPtr mon ATTRIBUTE_UNUSED,
virDomainObjPtr vm,
+ virTristateBool guest_initiated,
void *opaque)
{
virQEMUDriverPtr driver = opaque;
- virObjectEventPtr event;
+ virObjectEventPtr event = NULL;
qemuDomainObjPrivatePtr priv;
virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver);
+ bool callOnReboot = false;
virObjectLock(vm);
+ priv = vm->privateData;
+
+ /* This is a bit tricky. When a guest does 'reboot' we receive RESET event
+ * twice, both times it's guest initiated. However, if users call 'virsh
+ * reset' we still receive two events but the first one is guest_initiated
+ * = no, the second one is guest_initiated = yes. Therefore, to avoid
+ * executing onReboot action in the latter case we need this complicated
+ * construction. */
+ if (guest_initiated == VIR_TRISTATE_BOOL_NO) {
+ VIR_DEBUG("Ignoring not guest initiated RESET event from domain %s",
+ vm->def->name);
+ priv->gotReset = true;
+ } else if (priv->gotReset && guest_initiated == VIR_TRISTATE_BOOL_YES) {
+ VIR_DEBUG("Ignoring second RESET event from domain %s",
+ vm->def->name);
+ priv->gotReset = false;
+ } else {
+ callOnReboot = true;
+ }
+
event = virDomainEventRebootNewFromObj(vm);
- priv = vm->privateData;
if (priv->agent)
qemuAgentNotifyEvent(priv->agent, QEMU_AGENT_EVENT_RESET);
if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm, driver->caps) < 0)
VIR_WARN("Failed to save status on vm %s", vm->def->name);
+ if (callOnReboot &&
+ guest_initiated == VIR_TRISTATE_BOOL_YES &&
+ vm->def->onReboot == VIR_DOMAIN_LIFECYCLE_DESTROY)
+ qemuProcessShutdownOrReboot(driver, vm);
+
virObjectUnlock(vm);
-
qemuDomainEventQueue(driver, event);
-
virObjectUnref(cfg);
return 0;
}
@@ -555,6 +579,7 @@ qemuProcessFakeReboot(void *opaque)
goto endjob;
}
priv->gotShutdown = false;
+ priv->gotReset = false;
event = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_RESUMED,
VIR_DOMAIN_EVENT_RESUMED_UNPAUSED);
@@ -5320,6 +5345,7 @@ qemuProcessPrepareDomain(virConnectPtr conn,
priv->monError = false;
priv->monStart = 0;
priv->gotShutdown = false;
+ priv->gotReset = false;
VIR_DEBUG("Updating guest CPU definition");
if (qemuProcessUpdateGuestCPU(vm->def, priv->qemuCaps, caps, flags) < 0)
--
2.13.0
5 years, 11 months
[libvirt] New QEMU daemon for persistent reservations
by Paolo Bonzini
Hi all,
I am adding a new daemon to QEMU, that QEMU can connect to in order to
issue persistent reservation commands.
The daemon can only issue the commands on file descriptor that QEMU
already has. In addition normal users shouldn't have access to the
daemon's Unix socket in /run, so the daemon is protected against misuse.
My question is what is the best way to handle the connection to the
daemon socket. Currently, the path to the socket is passed to QEMU on
the command line:
-object pr-manager-helper,id=mgr,path=/run/qemu-pr-helper.sock \
-drive if=none,id=hd,driver=raw,filename=/dev/sdb,file.pr-manager=mgr \
-device scsi-block,drive=hd
(the new parts are "-object pr-manager-helper" and "file.pr-manager").
I could just make it root:root and pass a file descriptor from libvirt
to QEMU, but this would make it impossible for QEMU to reconnect to the
daemon in case someone does a "systemctl restart" or even just kills it
inadvertently. The daemon is stateless, so transparent reconnection
would be a nice feature to have.
The alternative is to somehow label the daemon socket so that it can be
accessed by QEMU, but I'm not very well versed in SELinux.
Any ideas?
Paolo
6 years, 5 months
[libvirt] [PATCH v2] vz: allow to start vz driver without host cache info
by Mikhail Feoktistov
Show warning message instead of fail operation.
It happens if kernel or cpu doesn't support reporting cpu cache info.
In case of Virtuozzo file "id" doesn't exist.
---
src/vz/vz_driver.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/vz/vz_driver.c b/src/vz/vz_driver.c
index 6f4aee3..eb97e54 100644
--- a/src/vz/vz_driver.c
+++ b/src/vz/vz_driver.c
@@ -119,7 +119,7 @@ vzBuildCapabilities(void)
goto error;
if (virCapabilitiesInitCaches(caps) < 0)
- goto error;
+ VIR_WARN("Failed to get host CPU cache info");
verify(ARRAY_CARDINALITY(archs) == ARRAY_CARDINALITY(emulators));
--
1.8.3.1
6 years, 6 months
[libvirt] Exposing mem-path in domain XML
by Michal Privoznik
Dear list,
there is the following bug [1] which I'm not quite sure how to grasp. So
there is this application/infrastructure called Kove [2] that allows you
to have memory for your application stored on a distant host in network
and basically fetch needed region on pagefault. Now imagine that
somebody wants to use it for backing up domain memory. However, the way
that the tool works is it has some kernel module and then some userland
binary that is fed with the path of the mmaped file. I don't know all
the details, but the point is, in order to let users use this we need to
expose the paths for mem-path for the guest memory. I know we did not
want to do this in the past, but now it looks like we don't have a way
around it, do we?
Michal
1: https://bugzilla.redhat.com/show_bug.cgi?id=1461214
2: http://kove.net
6 years, 6 months
[libvirt] [PATCH v2 00/12] Continue altering storage pool for privatization
by John Ferlan
Consider this round 1 of 2.... The next series will be 18 patches,
but the majority of those deal with change every {pool|obj}->def->X
to use the accessor virStoragePoolObjGetDef.
v1: https://www.redhat.com/archives/libvir-list/2017-May/msg00218.html
Probably not even worth looking at the v1, but this picks up where v1
left off somewhere around patch 10, but adding smaller steps between
patches.
John Ferlan (12):
storage: Create accessor API's for virStoragePoolObj
storage: Introduce virStoragePoolObjNew
storage: Fill in storage pool @active properly
storage: Introduce storage volume add, delete, count APIs
storage: Introduce APIs to search/scan storage pool volumes list
storage: Use virStoragePoolObj{Get|Set}ConfigFile
storage: Use virStoragePoolObjGetAutostartLink
storage: Use virStoragePoolObj{Is|Set}Active
storage: Use virStoragePoolObj{Is|Set}Autostart
storage: Internally represent @autostart to bool
storage: Use virStoragePoolObj{Get|Incr}Decr}Asyncjobs
storage: Use virStoragePoolObjDefUseNewDef
src/conf/virstorageobj.c | 211 +++++++++++++++++++++++++++++++--
src/conf/virstorageobj.h | 84 ++++++++++++-
src/libvirt_private.syms | 20 ++++
src/storage/storage_backend_disk.c | 93 +++++++++------
src/storage/storage_backend_gluster.c | 5 +-
src/storage/storage_backend_logical.c | 4 +-
src/storage/storage_backend_mpath.c | 3 +-
src/storage/storage_backend_rbd.c | 4 +-
src/storage/storage_backend_scsi.c | 4 +-
src/storage/storage_backend_sheepdog.c | 4 +-
src/storage/storage_backend_zfs.c | 6 +-
src/storage/storage_driver.c | 142 +++++++++-------------
src/storage/storage_util.c | 8 +-
src/test/test_driver.c | 54 ++++-----
tests/storagevolxml2argvtest.c | 20 ++--
15 files changed, 465 insertions(+), 197 deletions(-)
--
2.9.5
6 years, 7 months
