[libvirt] [PATCH] includes: Install libvirt-common.h
by Michal Privoznik
The libvirt-common.h is build time generated file from .in.
Obviously, it's generated into builddir and not srcdir. Problem
is, the list of header files to install, virinc_HEADERS contains
only $(srcdir)/*.h and this misses libvirt-common.h. This problem
is pretty obvious when doing a VPATH build.
Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com>
---
Steps to reproduce:
1) make distclean
2) mkdir _build _install
3) cd _build
4) ../configure --prefix=$(pwd)/../_install
5) make && make install
6) find ../_install -name libvirt-common.h
include/Makefile.am | 1 +
1 file changed, 1 insertion(+)
diff --git a/include/Makefile.am b/include/Makefile.am
index d626963..6b0b41e 100644
--- a/include/Makefile.am
+++ b/include/Makefile.am
@@ -20,6 +20,7 @@ virincdir = $(includedir)/libvirt
allheaders = $(wildcard $(srcdir)/libvirt/*.h)
virinc_HEADERS = $(filter-out $(srcdir)/libvirt/libvirt-admin.h, $(allheaders))
+virinc_HEADERS += libvirt/libvirt-common.h
EXTRA_DIST = libvirt/libvirt-common.h.in
--
2.4.10
8 years, 9 months
[libvirt] [libvirt-php] add flags support to virStorageVolCreateXML
by Vasiliy Tolstov
Signed-off-by: Vasiliy Tolstov <v.tolstov(a)selfip.ru>
---
src/libvirt-php.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/src/libvirt-php.c b/src/libvirt-php.c
index f3b3f9f81e6d..a0c960957edc 100644
--- a/src/libvirt-php.c
+++ b/src/libvirt-php.c
@@ -1238,6 +1238,8 @@ PHP_MINIT_FUNCTION(libvirt)
REGISTER_LONG_CONSTANT("VIR_STORAGE_VOL_RESIZE_ALLOCATE", 1, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("VIR_STORAGE_VOL_RESIZE_DELTA", 2, CONST_CS | CONST_PERSISTENT);
REGISTER_LONG_CONSTANT("VIR_STORAGE_VOL_RESIZE_SHRINK", 4, CONST_CS | CONST_PERSISTENT);
+ REGISTER_LONG_CONSTANT("VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA", VIR_STORAGE_VOL_CREATE_PREALLOC_METADATA, CONST_CS | CONST_PERSISTENT);
+ REGISTER_LONG_CONSTANT("VIR_STORAGE_VOL_CREATE_REFLINK", VIR_STORAGE_VOL_CREATE_REFLINK, CONST_CS | CONST_PERSISTENT);
/* Domain vCPU flags */
REGISTER_LONG_CONSTANT("VIR_DOMAIN_VCPU_CONFIG", VIR_DOMAIN_VCPU_CONFIG, CONST_CS | CONST_PERSISTENT);
@@ -7105,6 +7107,7 @@ PHP_FUNCTION(libvirt_storagevolume_get_xml_desc)
* Description: Function is used to create the new storage pool and return the handle to new storage pool
* Arguments: @res [resource]: libvirt storagepool resource
* @xml [string]: XML string to create the storage volume in the storage pool
+ * @flags [int]: virStorageVolCreateXML flags
* Returns: libvirt storagevolume resource
*/
PHP_FUNCTION(libvirt_storagevolume_create_xml)
@@ -7114,11 +7117,12 @@ PHP_FUNCTION(libvirt_storagevolume_create_xml)
zval *zpool;
virStorageVolPtr volume=NULL;
char *xml;
+ long flags = 0;
int xml_len;
- GET_STORAGEPOOL_FROM_ARGS("rs",&zpool,&xml,&xml_len);
+ GET_STORAGEPOOL_FROM_ARGS("rs|l",&zpool,&xml,&xml_len, &flags);
- volume=virStorageVolCreateXML(pool->pool,xml,0);
+ volume=virStorageVolCreateXML(pool->pool, xml, flags);
DPRINTF("%s: virStorageVolCreateXML(%p, <xml>, 0) returned %p\n", PHPFUNC, pool->pool, volume);
if (volume==NULL) RETURN_FALSE;
--
2.7.0
8 years, 9 months
[libvirt] [PATCH v2] qemu: qemuDomainRename and virDomainObjListNumOfDomains ABBA deadlock fix
by Nikolay Shirokovskiy
A pretty nasty deadlock occurs while trying to rename a VM in parallel
with virDomainObjListNumOfDomains.
The short description of the problem is as follows:
Thread #1:
qemuDomainRename:
------> aquires domain lock by qemuDomObjFromDomain
---------> waits for domain list lock in any of the listed functions:
- virDomainObjListFindByName
- virDomainObjListRenameAddNew
- virDomainObjListRenameRemove
Thread #2:
virDomainObjListNumOfDomains:
------> aquires domain list lock
---------> waits for domain lock in virDomainObjListCount
Consider another solution for the deadlock besides those proposed by Maxim
and Michael. Simply unlock before calling any function that internally
grabs domains list lock.
First it looks correct. We use qemuDomainObjBeginJob/qemuDomainObjEndJob to
wrap the operation so no one will run another operation on that domain in
parallel. In THREADS.txt this unlocking/locking is described explicitly for the
cases when we need to wait/sleep. Here we use same means just to different
purpose. Also called functions do not use domain internals in any way.
Second I find approach proposed by Michael difficult to implement correctly.
Imagine we write such a generic rename function with callbacks. Then it would
look like this:
lock domains list
...
add new name to list
unlock domain list
call callback to change driver state
lock domain list
remove old or new name (depends on callback result)
unlock domain list
We need to unlock domain list or we block operations on all domains while we
wait for job conditions in the callback. But now we are in potential trouble as
we leaving list in an inconsistent state. We can't move remove operation before
calling callback or we will be in trouble on callback failures - we would need
to add the old name back and this is not always possible. Current rename
implementation leaves config with new name on disk in worst case on rollback
but does not break the list.
---
src/qemu/qemu_driver.c | 15 ++++++++++++---
1 file changed, 12 insertions(+), 3 deletions(-)
diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c
index abcdbe6..26a8fb0 100644
--- a/src/qemu/qemu_driver.c
+++ b/src/qemu/qemu_driver.c
@@ -19987,6 +19987,7 @@ static int qemuDomainRename(virDomainPtr dom,
virObjectEventPtr event_new = NULL;
virObjectEventPtr event_old = NULL;
int ret = -1;
+ int rc;
char *new_dom_name = NULL;
char *old_dom_name = NULL;
char *old_dom_cfg_file = NULL;
@@ -20036,10 +20037,11 @@ static int qemuDomainRename(virDomainPtr dom,
/*
* This is a rather racy check, but still better than reporting
- * internal error. And since new_name != name here, there's no
- * deadlock imminent.
+ * internal error.
*/
+ virObjectUnlock(vm);
tmp_dom = virDomainObjListFindByName(driver->domains, new_name);
+ virObjectLock(vm);
if (tmp_dom) {
virObjectUnlock(tmp_dom);
virObjectUnref(tmp_dom);
@@ -20057,7 +20059,10 @@ static int qemuDomainRename(virDomainPtr dom,
goto endjob;
}
- if (virDomainObjListRenameAddNew(driver->domains, vm, new_name) < 0)
+ virObjectUnlock(vm);
+ rc = virDomainObjListRenameAddNew(driver->domains, vm, new_name);
+ virObjectLock(vm);
+ if (rc < 0)
goto endjob;
event_old = virDomainEventLifecycleNewFromObj(vm,
@@ -20081,7 +20086,9 @@ static int qemuDomainRename(virDomainPtr dom,
}
/* Remove old domain name from table. */
+ virObjectUnlock(vm);
virDomainObjListRenameRemove(driver->domains, old_dom_name);
+ virObjectLock(vm);
event_new = virDomainEventLifecycleNewFromObj(vm,
VIR_DOMAIN_EVENT_DEFINED,
@@ -20110,7 +20117,9 @@ static int qemuDomainRename(virDomainPtr dom,
old_dom_name = NULL;
}
+ virObjectUnlock(vm);
virDomainObjListRenameRemove(driver->domains, new_name);
+ virObjectLock(vm);
goto endjob;
}
--
1.8.3.1
8 years, 10 months
[libvirt] [PATCH v3 0/8] add close callback for drivers with persistent connection
by Nikolay Shirokovskiy
Currently close callback API can only inform us of closing the connection
between remote driver and daemon. But what if a driver running in the
daemon itself can have another persistent connection? In this case
we want to be informed of that connection changes state too.
This patch series extends meaning of current close callback API so
that now it notifies of closing of any internal persistent connection.
The overall approach is to move close callback support to drivers.
Changes from v2:
Split patches further to make it more comprehensible.
Nikolay Shirokovskiy (8):
factor out virConnectCloseCallbackDataPtr methods
virConnectCloseCallbackData: fix connection object refcount
virConnectCloseCallbackData: factor out callback disarming
close callback API: remove unnecessary locks
virConnectCloseCallbackDataDispose: remove unnecessary locks
close callback: move it to driver
daemon: add connection close rpc
vz: implement connection close notification
daemon/libvirtd.h | 1 +
daemon/remote.c | 84 ++++++++++++++++++++++++++++++++
po/POTFILES.in | 1 +
src/datatypes.c | 113 +++++++++++++++++++++++++++++++++----------
src/datatypes.h | 11 +++++
src/driver-hypervisor.h | 12 +++++
src/libvirt-host.c | 46 ++----------------
src/remote/remote_driver.c | 106 ++++++++++++++++++++++++++++++++--------
src/remote/remote_protocol.x | 24 ++++++++-
src/remote_protocol-structs | 6 +++
src/vz/vz_driver.c | 39 +++++++++++++++
src/vz/vz_sdk.c | 4 ++
src/vz/vz_utils.h | 3 ++
13 files changed, 363 insertions(+), 87 deletions(-)
--
1.8.3.1
8 years, 10 months
[libvirt] [PATCH] rbd: Open in Read-Only mode when refreshing a volume
by Wido den Hollander
By opening a RBD volume in Read-Only we do not register a
watcher on the header object inside the Ceph cluster.
Refreshing a volume only calls rbd_stat() which is a operation
which does not write to a RBD image.
This allows us to use a cephx user which has no write
permissions if we would want to use the libvirt storage pool
for informational purposes only.
It also saves us a write into the Ceph cluster which should
speed up refreshing a RBD pool.
rbd_open_read_only() is available in all librbd versions which
also support rbd_open().
Signed-off-by: Wido den Hollander <wido(a)widodh.nl>
---
src/storage/storage_backend_rbd.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c
index 8c7a80d..3ab7912 100644
--- a/src/storage/storage_backend_rbd.c
+++ b/src/storage/storage_backend_rbd.c
@@ -283,7 +283,7 @@ static int volStorageBackendRBDRefreshVolInfo(virStorageVolDefPtr vol,
int r = 0;
rbd_image_t image = NULL;
- r = rbd_open(ptr->ioctx, vol->name, &image, NULL);
+ r = rbd_open_read_only(ptr->ioctx, vol->name, &image, NULL);
if (r < 0) {
ret = -r;
virReportSystemError(-r, _("failed to open the RBD image '%s'"),
--
1.9.1
8 years, 10 months
[libvirt] [PATCH] Simplify virDomainParseMemory
by Ján Tomko
Do not store the return value of virDomainParseScaledValue,
it was overwritten anyway.
Delete the cleanup label, there is nothing to clean up.
---
src/conf/domain_conf.c | 16 +++++-----------
1 file changed, 5 insertions(+), 11 deletions(-)
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index 1ea74a6..f663969 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -7547,28 +7547,22 @@ virDomainParseMemory(const char *xpath,
bool required,
bool capped)
{
- int ret = -1;
unsigned long long bytes, max;
max = virMemoryMaxValue(capped);
- ret = virDomainParseScaledValue(xpath, units_xpath, ctxt,
- &bytes, 1024, max, required);
- if (ret < 0)
- goto cleanup;
+ if (virDomainParseScaledValue(xpath, units_xpath, ctxt,
+ &bytes, 1024, max, required) < 0)
+ return -1;
/* Yes, we really do use kibibytes for our internal sizing. */
*mem = VIR_DIV_UP(bytes, 1024);
if (*mem >= VIR_DIV_UP(max, 1024)) {
virReportError(VIR_ERR_OVERFLOW, "%s", _("size value too large"));
- ret = -1;
- goto cleanup;
+ return -1;
}
-
- ret = 0;
- cleanup:
- return ret;
+ return 0;
}
--
2.4.10
8 years, 10 months
[libvirt] [PATCH 0/4 v2] vz: rework domain creation
by Mikhail Feoktistov
Patches 1 and 2 make preparation for patch 4
Patch 3 fixes notification subscription
To get domain info we should receive and handle notification from hypervisor
Patch 4 fixes race condition when adding domain to domains list
Race condition:
User calls defineXML to create new instance.
The main thread from vzDomainDefineXMLFlags() creates new instance by prlsdkCreateVm.
Then this thread calls prlsdkAddDomain to add new domain to domains list.
The second thread receives notification from hypervisor that new VM was created.
It calls prlsdkHandleVmAddedEvent() and also tries to add new domain to domains list.
These two threads call virDomainObjListFindByUUID() from prlsdkAddDomain() and don't find new domain.
So they add two domains with the same uuid to domains list.
Mikhail Feoktistov (4):
vz: make output arguments in prlsdkGetDomainIds as optional
vz: remove unused struct field
vz: fix notification subscription
vz: fix race condition when adding domain to domains list
src/vz/vz_driver.c | 13 ++-
src/vz/vz_sdk.c | 293 +++++++++++++++++++++++++++--------------------------
src/vz/vz_sdk.h | 9 +-
src/vz/vz_utils.h | 1 -
4 files changed, 165 insertions(+), 151 deletions(-)
--
1.8.3.1
8 years, 10 months
[libvirt] [PATCH 00/34] vcpu info storage refactors - part 2
by Peter Krempa
This is a continuation of the previous patches that change how we store info
related to vcpus.
In this series the vcpupin and vcpusched info is moved to the vcpu structure
which makes for a much simpler storage and handling of the data.
This series also fixes numerous bugs in the vcpu code.
Peter Krempa (34):
qemu: process: refactor and rename qemuValidateCpuMax to
qemuValidateCpuCount
qemu: process: Disallow VMs with 0 vcpus
vz: Fix invalid iteration of def->cputune.vcpupin
qemu: don't iterate vcpus using priv->nvcpupids in
qemuProcessSetSchedParams
(qemu|lxc)DomainGetCPUStats: Clean up
cgroup: Clean up virCgroupGetPercpuStats
conf: Add helper to retrieve bitmap of active vcpus for a definition
virsh: cpu-stats: Extract common printing code into a function
virsh: cpu-stats: Remove unneeded flags
qemu: Don't use priv->ncpus to iterate cgroup setting
cgroup: Prepare for sparse vCPU topologies in virCgroupGetPercpuStats
qemu: cpu hotplug: Set vcpu state directly in the new structure
qemu: Move and rename qemuProcessDetectVcpuPIDs to
qemuDomainDetectVcpuPids
qemu: domain: Prepare qemuDomainDetectVcpuPids for reuse
qemu: Reuse qemuDomainDetectVcpuPids in cpu hot(un)plug
conf: Don't copy def->cpumask into cpu pinning info
tests: qemuxml2xml: Order pinning information numerically
conf: Split out logic to determine whether cpupin was provided
test: Touch up error message when attempting to pin invalid vCPU
conf: Store cpu pinning data in def->vcpus
conf: remove unused cpu pinning helpers and data structures
conf: disallow empty cpusets for vcpu pinning when parsing XML
conf: disallow empty cpuset for emulatorpin
conf: Extract code that formats <cputune>
util: buffer: Sanitize comment for virBufferAddBuffer
util: bitmap: Introduce bitmap subtraction
conf: Add helper to return a bitmap of active iothread ids
conf: Extract code for parsing thread resource scheduler info
conf: Don't store vcpusched orthogonally to other vcpu info
conf: Fix how iothread scheduler info is stored
qemu: vcpu: Aggregate code to set vCPU tuning
qemu: vcpu: Reuse qemuProcessSetupVcpu in vcpu hotplug
qemu: iothread: Aggregate code to set IOTrhead tuning
qemu: iothread: Reuse qemuProcessSetupIOThread in iothread hotplug
src/conf/domain_conf.c | 948 +++++++++++----------
src/conf/domain_conf.h | 48 +-
src/libvirt_private.syms | 10 +-
src/libxl/libxl_domain.c | 20 +-
src/libxl/libxl_driver.c | 41 +-
src/lxc/lxc_driver.c | 5 +-
src/qemu/qemu_cgroup.c | 198 -----
src/qemu/qemu_cgroup.h | 2 -
src/qemu/qemu_domain.c | 81 ++
src/qemu/qemu_domain.h | 2 +
src/qemu/qemu_driver.c | 417 +++------
src/qemu/qemu_process.c | 479 ++++++-----
src/qemu/qemu_process.h | 6 +
src/test/test_driver.c | 50 +-
src/util/virbitmap.c | 21 +
src/util/virbitmap.h | 3 +
src/util/virbuffer.c | 3 +-
src/util/vircgroup.c | 52 +-
src/util/vircgroup.h | 3 +-
src/vz/vz_sdk.c | 6 +-
.../qemuxml2argv-cputune-iothreads.xml | 2 +-
.../qemuxml2xmlout-cputune-iothreads.xml | 2 +-
.../qemuxml2xmlout-cputune-iothreadsched.xml | 3 +-
tests/vcpupin | 2 +-
tests/virbitmaptest.c | 55 ++
tests/vircgrouptest.c | 2 +-
tools/virsh-domain.c | 66 +-
27 files changed, 1165 insertions(+), 1362 deletions(-)
--
2.6.2
8 years, 10 months
[libvirt] [PATCH v4 0/8] Add perf and Intel CMT feature support
by Qiaowei Ren
Add perf and Intel CMT feature support
The series mainly adds Intel CMT feature support into libvirt. CMT is
new introduced PQos (Platform Qos) feature to monitor the usage of
cache by applications running on the platform.
Currently CMT patches has been merged into Linux kernel mainline.
The CMT implementation in Linux kernel is based on perf mechanism and
there is no support for perf in libvirt, and so this series firstly
add perf support into libvirt, including two public API and a set of
util interfaces. And based on these APIs and interfaces, thie series
implements CMT perf event support.
Current state:
* 1/8 - perf: add new public APIs for perf event
- ACKed by Daniel
* 2/8 - perf: implement the remote protocol for perf event
- ACKed by Daniel
* 3/8 - perf: implement a set of util functions for perf event
- ACKed by Daniel
* 4/8 - qemu_driver: add support to perf event
- restart perf in qemuProcessReconnect and qemuProcessAttach
in patch 6/8
* 5/8 - perf: add new xml element
- ACKed by Daniel
* 6/8 - perf: reenable perf events when libvirtd restart
- add qemuDomainPerfRestart() into qemuProcessReconnect() and
qemuProcessAttach()
* 7/8 - virsh: implement new command to support perf
- ACKed by Daniel
* 8/8 - virsh: extend domstats command
- ACKed by Daniel
TODO:
1. add support for new APIs into libvirt-python library.
Changes since v1:
* change perf APIs implementation to match new style of the API.
* add new xml element
* reenable all perf events previously enabled when libvirtd daemon
restart.
* redesign perf util functions.
Changes since v2:
* add an example XML file to the test suite.
* add virPerfReadEvent().
* change 'perf' xml element to new style.
* change 'perf' command to new stype.
Changes since v3:
* move qemuDomainPerfRestart() into qemuProcessReconnect() and
qemuProcessAttach().
Qiaowei Ren (8):
perf: add new public APIs for perf event
perf: implement the remote protocol for perf event
perf: implement a set of util functions for perf event
qemu_driver: add support to perf event
perf: add new xml element
perf: reenable perf events when libvirtd restart
virsh: implement new command to support perf
virsh: extend domstats command
daemon/remote.c | 47 ++++
docs/schemas/domaincommon.rng | 27 +++
include/libvirt/libvirt-domain.h | 19 ++
include/libvirt/virterror.h | 2 +
src/Makefile.am | 1 +
src/conf/domain_conf.c | 111 ++++++++++
src/conf/domain_conf.h | 10 +
src/driver-hypervisor.h | 12 +
src/libvirt-domain.c | 93 ++++++++
src/libvirt_private.syms | 12 +
src/libvirt_public.syms | 6 +
src/qemu/qemu_domain.h | 3 +
src/qemu/qemu_driver.c | 159 +++++++++++++
src/qemu/qemu_process.c | 44 ++++
src/remote/remote_driver.c | 39 ++++
src/remote/remote_protocol.x | 30 ++-
src/remote_protocol-structs | 18 ++
src/util/virerror.c | 2 +
src/util/virperf.c | 307 ++++++++++++++++++++++++++
src/util/virperf.h | 63 ++++++
tests/domainschemadata/domain-perf-simple.xml | 20 ++
tools/virsh-domain-monitor.c | 7 +
tools/virsh-domain.c | 128 +++++++++++
tools/virsh.pod | 27 ++-
24 files changed, 1184 insertions(+), 3 deletions(-)
create mode 100644 src/util/virperf.c
create mode 100644 src/util/virperf.h
create mode 100644 tests/domainschemadata/domain-perf-simple.xml
--
1.9.1
8 years, 10 months
