September 2014 - Devel - libvirt List Archives

[libvirt] Entering freeze for libvirt-1.2.8
by Daniel Veillard 05 Sep '14

05 Sep '14

So I tagged 1.2.8-rc1 in git and made tarball and signed rpms available at the usual place: ftp://libvirt.org/libvirt/ While we seems to have the new API in place it's also clear that there is a bunch of patches still waiting, either related to the new APIs or blocked by lack of review. Please try to prioritize filling up API implementations, and bug fixes for the reviews but I think we need to be open about incremental improvements when they are very specific and allow them in ! I will try to release by Tuesday 2nd Sep, as I will be on the road next week after that time. However the good point of that monthly cycle is that if you get the ACKs needed even if that's not in 1.2.8 that will be in for 1.2.9 next month, in time for KVM Forum :-) Please give a try to the current version, I'm a limited capacity to test it this time, thanks ! Daniel -- Daniel Veillard | Open Source and Standards, Red Hat veillard(a)redhat.com | libxml Gnome XML XSLT toolkit http://xmlsoft.org/ http://veillard.com/ | virtualization library http://libvirt.org/

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[libvirt] [PATCH 0/2] Use huge pages on UMA guests widely
by Michal Privoznik 05 Sep '14

05 Sep '14

*** BLURB HERE *** Michal Privoznik (2): conf: Disallow nonexistent NUMA nodes for hugepages qemu: Honor hugepages for UMA domains src/conf/domain_conf.c | 36 +++++++++++++++++ src/qemu/qemu_command.c | 25 ++++++++++-- .../qemuxml2argv-hugepages-pages4.xml | 45 ++++++++++++++++++++++ .../qemuxml2argv-hugepages-pages5.args | 7 ++++ .../qemuxml2argv-hugepages-pages5.xml | 32 +++++++++++++++ tests/qemuxml2argvtest.c | 2 + 6 files changed, 143 insertions(+), 4 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages4.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages5.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-hugepages-pages5.xml -- 1.8.5.5

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[libvirt] [PATCH v2] selinux: Avoid label reservations for type = none
by Shivaprasad G Bhat 05 Sep '14

05 Sep '14

For security type='none' libvirt according to the docs should not generate seclabel be it for selinux or any model. So, skip the reservation of labels when type is none. Signed-off-by: Shivaprasad G Bhat <sbhat(a)linux.vnet.ibm.com> --- src/security/security_selinux.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/security/security_selinux.c b/src/security/security_selinux.c index e8c13db..c21e4fe 100644 --- a/src/security/security_selinux.c +++ b/src/security/security_selinux.c @@ -731,7 +731,9 @@ virSecuritySELinuxReserveSecurityLabel(virSecurityManagerPtr mgr, virSecurityLabelDefPtr seclabel; seclabel = virDomainDefGetSecurityLabelDef(def, SECURITY_SELINUX_NAME); - if (!seclabel || seclabel->type == VIR_DOMAIN_SECLABEL_STATIC) + if (!seclabel || + seclabel->type == VIR_DOMAIN_SECLABEL_NONE || + seclabel->type == VIR_DOMAIN_SECLABEL_STATIC) return 0; if (getpidcon_raw(pid, &pctx) == -1) {

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[libvirt] [PATCH RFC] qemu: make time adjustment persistent if RTC changes in guest
by Wang Rui 05 Sep '14

05 Sep '14

Domain's clock xml is as below. <clock offset='variable' basis='utc' adjustment='10'/> If the guest modifies its RTC, libvirt will hanlde the time offset and save the active status in qemuProcessHandleRTCChange(). However, libvirt won't save the persistent config. So next time when vm is restarted(shutdown and start), the time adjuestment(RTC change) set by user will be lost. This patch make the adjustment persistent for persistent domain. Signed-off-by: Wang Rui <moon.wangrui(a)huawei.com> --- I'm not sure about the current purpose so I sent a RFC patch. Is it for some reason that RTC change from guest isn't saved to persistent config ? I have tested this patch by changing RTC, starting, shutting down and migrating. It seems good. There's only a nit I have found. Some guests will set hardware clock to current system time when shut down. So if hardware clock is different from system clock(the difference doesn't come from user setting, maybe from clock shift by system), the persistent config file will be saved to a new adjustment after shutdown with this patch. But I think the hypervisor or guest OS should fix the nit, not libvirt. --- src/qemu/qemu_process.c | 8 +++++++- 1 file changed, 7 insertions(+), 1 deletion(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 407da5e..b03bf02 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -863,7 +863,13 @@ qemuProcessHandleRTCChange(qemuMonitorPtr mon ATTRIBUTE_UNUSED, vm->def->clock.data.variable.adjustment = offset; if (virDomainSaveStatus(driver->xmlopt, cfg->stateDir, vm) < 0) - VIR_WARN("unable to save domain status with RTC change"); + VIR_WARN("unable to save domain status with RTC change"); + + if (vm->persistent && vm->newDef) { + vm->newDef->clock.data.variable.adjustment = offset; + if (virDomainSaveConfig(cfg->configDir, vm->newDef) < 0) + VIR_WARN("unable to save domain config with RTC change"); + } } event = virDomainEventRTCChangeNewFromObj(vm, offset); -- 1.7.12.4

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[libvirt] [PATCH] Don't include non-migratable features in host-model
by Ján Tomko 05 Sep '14

05 Sep '14

Commit fba6bc4 introduced supoprt for the 'invtsc' feature, which blocks migration. We should not include it in the host-model CPU by default, because it's intended to be used with migration. https://bugzilla.redhat.com/show_bug.cgi?id=1138221 --- src/cpu/cpu_map.xml | 2 +- src/cpu/cpu_x86.c | 63 ++++++++++++++++++++++++++++++++++++++++++++++++----- 2 files changed, 59 insertions(+), 6 deletions(-) diff --git a/src/cpu/cpu_map.xml b/src/cpu/cpu_map.xml index 12987a0..18c7b0d 100644 --- a/src/cpu/cpu_map.xml +++ b/src/cpu/cpu_map.xml @@ -328,7 +328,7 @@ </feature>  - <feature name='invtsc'> + <feature name='invtsc' migratable='no'> <cpuid function='0x80000007' edx='0x00000100'/> </feature> diff --git a/src/cpu/cpu_x86.c b/src/cpu/cpu_x86.c index af2e08e..21a7007 100644 --- a/src/cpu/cpu_x86.c +++ b/src/cpu/cpu_x86.c @@ -89,6 +89,7 @@ struct x86_map { struct x86_vendor *vendors; struct x86_feature *features; struct x86_model *models; + struct x86_feature *migrate_blockers; }; static struct x86_map* virCPUx86Map = NULL; @@ -592,6 +593,28 @@ x86FeatureFree(struct x86_feature *feature) static struct x86_feature * +x86FeatureCopy(const struct x86_feature *src) +{ + struct x86_feature *feature; + + if (VIR_ALLOC(feature) < 0) + return NULL; + + if (VIR_STRDUP(feature->name, src->name) < 0) + goto error; + + if ((feature->data = x86DataCopy(src->data)) == NULL) + goto error; + + return feature; + + error: + x86FeatureFree(feature); + return NULL; +} + + +static struct x86_feature * x86FeatureFind(const struct x86_map *map, const char *name) { @@ -677,6 +700,9 @@ x86FeatureLoad(xmlXPathContextPtr ctxt, int ret = 0; size_t i; int n; + char *str = NULL; + bool migratable = true; + struct x86_feature *migrate_blocker = NULL; if (!(feature = x86FeatureNew())) goto error; @@ -694,6 +720,10 @@ x86FeatureLoad(xmlXPathContextPtr ctxt, goto ignore; } + str = virXPathString("string(@migratable)", ctxt); + if (STREQ_NULLABLE(str, "no")) + migratable = false; + n = virXPathNodeSet("./cpuid", ctxt, &nodes); if (n < 0) goto ignore; @@ -710,6 +740,14 @@ x86FeatureLoad(xmlXPathContextPtr ctxt, goto error; } + if (!migratable) { + if ((migrate_blocker = x86FeatureCopy(feature)) == NULL) + goto error; + + migrate_blocker->next = map->migrate_blockers; + map->migrate_blockers = migrate_blocker; + } + if (map->features == NULL) { map->features = feature; } else { @@ -720,6 +758,7 @@ x86FeatureLoad(xmlXPathContextPtr ctxt, out: ctxt->node = ctxt_node; VIR_FREE(nodes); + VIR_FREE(str); return ret; @@ -728,6 +767,7 @@ x86FeatureLoad(xmlXPathContextPtr ctxt, ignore: x86FeatureFree(feature); + x86FeatureFree(migrate_blocker); goto out; } @@ -1093,6 +1133,12 @@ x86MapFree(struct x86_map *map) x86VendorFree(vendor); } + while (map->migrate_blockers != NULL) { + struct x86_feature *migrate_blocker = map->migrate_blockers; + map->migrate_blockers = migrate_blocker->next; + x86FeatureFree(migrate_blocker); + } + VIR_FREE(map); } @@ -2025,16 +2071,15 @@ x86UpdateHostModel(virCPUDefPtr guest, const virCPUDef *host) { virCPUDefPtr oldguest = NULL; + const struct x86_map *map; + const struct x86_feature *feat; size_t i; int ret = -1; guest->match = VIR_CPU_MATCH_EXACT; - /* no updates are required */ - if (guest->nfeatures == 0) { - virCPUDefFreeModel(guest); - return virCPUDefCopyModel(guest, host, true); - } + if (!(map = virCPUx86GetMap())) + goto cleanup; /* update the host model according to the desired configuration */ if (!(oldguest = virCPUDefCopy(guest))) @@ -2044,6 +2089,14 @@ x86UpdateHostModel(virCPUDefPtr guest, if (virCPUDefCopyModel(guest, host, true) < 0) goto cleanup; + /* Remove non-migratable features by default */ + for (i = 0; i < guest->nfeatures; i++) { + for (feat = map->migrate_blockers; feat; feat = feat->next) { + if (STREQ(feat->name, guest->features[i].name)) + VIR_DELETE_ELEMENT_INPLACE(guest->features, i, guest->nfeatures); + } + } + for (i = 0; i < oldguest->nfeatures; i++) { if (virCPUDefUpdateFeature(guest, oldguest->features[i].name, -- 1.8.5.5

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[libvirt] [PATCH 1/1] libvirtd crash when defining scsi storage pool
by Pradipta Kr. Banerjee 05 Sep '14

05 Sep '14

libvirtd crashes when there is an existing SCSI pool with adapter type as 'scsi_host' and defining a new SCSI pool with adapter type as 'fc_host' and parent attribute missing. For eg when defining a storage-pool with the following XML will crash libvirtd if there already exists a SCSI pool with adapter type 'scsi_host' <pool type='scsi'> <name>TEST_SCSI_FC_POOL</name> <source> <adapter type='fc_host' wwnn='1234567890abcdef' wwpn='abcdef1234567890'/> </source> <target> <path>/dev/disk/by-path</path> </target> </pool> This happens because for fc_host, adapter 'name' is not relevant whereas for scsi_host its mandatory attribute. However the check in libvirt for finding duplicate storage pools doesn't take that into account while comparing, resulting into crash This patch fixes the issue Signed-off-by: Pradipta Kr. Banerjee <bpradip(a)in.ibm.com> --- src/conf/storage_conf.c | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/src/conf/storage_conf.c b/src/conf/storage_conf.c index 8b6fd79..54a4589 100644 --- a/src/conf/storage_conf.c +++ b/src/conf/storage_conf.c @@ -2126,8 +2126,10 @@ virStoragePoolSourceFindDuplicate(virStoragePoolObjListPtr pools, STREQ(pool->def->source.adapter.data.fchost.wwpn, def->source.adapter.data.fchost.wwpn)) matchpool = pool; - } else if (pool->def->source.adapter.type == - VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST){ + } else if ((pool->def->source.adapter.type == + VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST)\ + && (def->source.adapter.type == + VIR_STORAGE_POOL_SOURCE_ADAPTER_TYPE_SCSI_HOST)) { if (STREQ(pool->def->source.adapter.data.name, def->source.adapter.data.name)) matchpool = pool; -- 1.9.3

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[libvirt] libvirt-qemu.so subject to sVirt?
by bancfc＠openmailbox.org 05 Sep '14

05 Sep '14

Hello. I am thinking about using the feature of passing through qemu commands via libvirt. Before I do that I want to make sure that it doesn't have negative security implications. I understand that talking to qemu-kvm directly via commandline strips vms from having sVirt protections applied. Is use of this feature the same case?

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[libvirt] How to set guest resolution?
by bancfc＠openmailbox.org 05 Sep '14

05 Sep '14

Can you please tell me if there is a way to set a guest's screen resolution via libvirt?

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[libvirt] [PATCH 0/2] syntax check: hanging braces
by Eric Blake 04 Sep '14

04 Sep '14

Another case where it is worth enforcing a common existing style, and documenting it in HACKING. Here, there were fewer offenders, so the series is not split in as many pieces. Obviously depends on my earlier series for if-else {} checks, as otherwise this will detect several 'else' as lacking a hanging brace. Eric Blake (2): maint: use hanging curly braces maint: tighten curly brace syntax checking HACKING | 27 +++++++++++++++++++++++++++ cfg.mk | 18 ++++++++++++------ docs/hacking.html.in | 31 +++++++++++++++++++++++++++++++ src/conf/domain_conf.c | 6 ++---- src/interface/interface_backend_netcf.c | 9 +++------ src/network/bridge_driver.c | 3 +-- src/util/virfile.c | 3 +-- src/util/virnetdev.c | 3 +-- src/util/virnetdevmacvlan.c | 5 ++--- src/util/virtypedparam.c | 3 +-- src/util/virutil.c | 6 ++---- src/vbox/vbox_common.c | 4 ++-- tests/seclabeltest.c | 6 ++---- 13 files changed, 87 insertions(+), 37 deletions(-) -- 1.9.3

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[libvirt] [PATCH 0/2] Yet another seclabel patchset
by Michal Privoznik 04 Sep '14

04 Sep '14

*** BLURB HERE *** Michal Privoznik (2): conf: Fix even implicit labels tests: Add test cases for previous commit src/conf/domain_conf.c | 7 +++ .../qemuhotplug-hotplug-base+disk-scsi.xml | 2 +- .../qemuhotplug-hotplug-base+disk-usb.xml | 2 +- .../qemuhotplug-hotplug-base+disk-virtio.xml | 2 +- .../qemuxml2argvdata/qemuxml2argv-hotplug-base.xml | 2 +- .../qemuxml2argv-seclabel-dynamic-none-relabel.xml | 53 ++++++++++++++++++++++ ...emuxml2xmlout-seclabel-dynamic-none-relabel.xml | 53 ++++++++++++++++++++++ .../qemuxml2xmlout-seclabel-dynamic-relabel.xml | 28 ++++++++++++ .../qemuxml2xmlout-seclabel-none.xml | 28 ++++++++++++ tests/qemuxml2xmltest.c | 5 +- tests/testutilsqemu.c | 10 ++++ 11 files changed, 186 insertions(+), 6 deletions(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-seclabel-dynamic-none-relabel.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-seclabel-dynamic-none-relabel.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-seclabel-dynamic-relabel.xml create mode 100644 tests/qemuxml2xmloutdata/qemuxml2xmlout-seclabel-none.xml -- 1.8.5.5

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