While not as critical as in qemu driver, there are still some runtime information we report in capabilities XML that might change throughout time. For instance, onlined CPUs (which affects reported L3 cache sizes). Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/lxc/lxc_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index 9b329269a9..6969dddcab 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -205,7 +205,7 @@ static char *lxcConnectGetCapabilities(virConnectPtr conn) { if (virConnectGetCapabilitiesEnsureACL(conn) < 0) return NULL; - if (!(caps = virLXCDriverGetCapabilities(driver, false))) + if (!(caps = virLXCDriverGetCapabilities(driver, true))) return NULL; xml = virCapabilitiesFormatXML(caps); -- 2.16.4

There are two places where we report supported sizes of huge pages: /capabilities/host/cpu/pages /capabilities/host/topology/cells/cell/pages The former aggregates sizes over all NUMA nodes while the latter reports supported sizes only for given node. While we are reporting per NUMA node sizes we are not reporting the aggregated sizes. I've noticed this when wondering why doesn't allocpages completer work. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/lxc/lxc_conf.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/src/lxc/lxc_conf.c b/src/lxc/lxc_conf.c index 5cd6f231dd..949bfe246a 100644 --- a/src/lxc/lxc_conf.c +++ b/src/lxc/lxc_conf.c @@ -86,6 +86,10 @@ virCapsPtr virLXCDriverCapsInit(virLXCDriverPtr driver) if (driver && virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0) VIR_WARN("Failed to get host power management capabilities"); + /* Add huge pages info */ + if (virCapabilitiesInitPages(caps) < 0) + VIR_WARN("Failed to get pages info"); + if (virGetHostUUID(caps->host.host_uuid)) { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("cannot get the host uuid")); -- 2.16.4

So we originally disabled LXC driver when libvirtd is running under valgrind back in 05436ab7ff087 (which dates to beginning of 2009) as it was causing valgrind to crash. It's not the case anymore. Valgrind works with LXC happily. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/lxc/lxc_driver.c | 11 ----------- 1 file changed, 11 deletions(-) diff --git a/src/lxc/lxc_driver.c b/src/lxc/lxc_driver.c index 6969dddcab..8867645cdc 100644 --- a/src/lxc/lxc_driver.c +++ b/src/lxc/lxc_driver.c @@ -1550,19 +1550,8 @@ static int lxcStateInitialize(bool privileged, void *opaque ATTRIBUTE_UNUSED) { virCapsPtr caps = NULL; - const char *ld; virLXCDriverConfigPtr cfg = NULL; - /* Valgrind gets very annoyed when we clone containers, so - * disable LXC when under valgrind - * XXX remove this when valgrind is fixed - */ - ld = virGetEnvBlockSUID("LD_PRELOAD"); - if (ld && strstr(ld, "vgpreload")) { - VIR_INFO("Running under valgrind, disabling driver"); - return 0; - } - /* Check that the user is root, silently disable if not */ if (!privileged) { VIR_INFO("Not running privileged, disabling driver"); -- 2.16.4

The individual strings are freed, but the array is never freed. 8 bytes in 1 blocks are definitely lost in loss record 28 of 1,098 at 0x4C2CE3F: malloc (vg_replace_malloc.c:298) by 0x4C2F1BF: realloc (vg_replace_malloc.c:785) by 0x52C9C92: virReallocN (viralloc.c:245) by 0x52C9D88: virExpandN (viralloc.c:294) by 0x23414D99: virLXCProcessSetupInterfaces (lxc_process.c:552) by 0x23417457: virLXCProcessStart (lxc_process.c:1356) by 0x2341F71C: lxcDomainCreateWithFiles (lxc_driver.c:1088) by 0x2341F805: lxcDomainCreate (lxc_driver.c:1123) by 0x55917EB: virDomainCreate (libvirt-domain.c:6534) by 0x1367D1: remoteDispatchDomainCreate (remote_daemon_dispatch_stubs.h:4434) by 0x1366EA: remoteDispatchDomainCreateHelper (remote_daemon_dispatch_stubs.h:4410) by 0x546FDF1: virNetServerProgramDispatchCall (virnetserverprogram.c:437) Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/lxc/lxc_process.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c index 14502e12fe..3e44da1aaf 100644 --- a/src/lxc/lxc_process.c +++ b/src/lxc/lxc_process.c @@ -1559,6 +1559,7 @@ int virLXCProcessStart(virConnectPtr conn, virCommandFree(cmd); for (i = 0; i < nveths; i++) VIR_FREE(veths[i]); + VIR_FREE(veths); for (i = 0; i < nttyFDs; i++) VIR_FORCE_CLOSE(ttyFDs[i]); VIR_FREE(ttyFDs); -- 2.16.4

The config object is refed but unrefed only on error which leaves refcount unbalanced on successful return. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com&gt; --- src/lxc/lxc_process.c | 14 ++++++++------ 1 file changed, 8 insertions(+), 6 deletions(-) diff --git a/src/lxc/lxc_process.c b/src/lxc/lxc_process.c index 3e44da1aaf..d021a890f7 100644 --- a/src/lxc/lxc_process.c +++ b/src/lxc/lxc_process.c @@ -931,7 +931,7 @@ virLXCProcessBuildControllerCmd(virLXCDriverPtr driver, filterstr = virLogGetFilters(); if (!filterstr) { virReportOOMError(); - goto cleanup; + goto error; } virCommandAddEnvPair(cmd, "LIBVIRT_LOG_FILTERS", filterstr); @@ -943,7 +943,7 @@ virLXCProcessBuildControllerCmd(virLXCDriverPtr driver, outputstr = virLogGetOutputs(); if (!outputstr) { virReportOOMError(); - goto cleanup; + goto error; } virCommandAddEnvPair(cmd, "LIBVIRT_LOG_OUTPUTS", outputstr); @@ -973,7 +973,7 @@ virLXCProcessBuildControllerCmd(virLXCDriverPtr driver, char *tmp = NULL; if (virAsprintf(&tmp, "--share-%s", nsInfoLocal[i]) < 0) - goto cleanup; + goto error; virCommandAddArg(cmd, tmp); virCommandAddArgFormat(cmd, "%d", nsInheritFDs[i]); virCommandPassFD(cmd, nsInheritFDs[i], 0); @@ -999,11 +999,13 @@ virLXCProcessBuildControllerCmd(virLXCDriverPtr driver, * write the live domain status XML with the PID */ virCommandRequireHandshake(cmd); + cleanup: + virObjectUnref(cfg); return cmd; - cleanup: + error: virCommandFree(cmd); - virObjectUnref(cfg); - return NULL; + cmd = NULL; + goto cleanup; } -- 2.16.4