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[libvirt] Plans for next release
by Daniel Veillard 26 Apr '19

26 Apr '19

I think we need to enter freeze soon if we want to release mid next week if we do so tomorrow, then we can push rc2 on Monday and have a release around May first. Any problem with that plan ? thanks, Daniel -- Daniel Veillard | Red Hat Developers Tools http://developer.redhat.com/ 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] storage: escape ipv6 for ceph mon hosts to librados
by Yi Li 26 Apr '19

26 Apr '19

Hosts for rbd are ceph monitor daemons. These have fixed IP addresses, so they are often referenced by IP rather than hostname for convenience, or to avoid relying on DNS. Using IPv4 addresses as the host name works already, but IPv6 addresses require rbd-specific escaping because the colon is used as an option separator in the string passed to librados. Escape these colons, and enclose the IPv6 address in square brackets so it is distinguished from the port, which is currently mandatory. Signed-off-by: Yi Li <yili(a)winhong.com> --- docs/schemas/storagepool.rng | 5 ++++- src/storage/storage_backend_rbd.c | 13 ++++++++++--- tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml | 13 +++++++++++++ tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml | 16 ++++++++++++++++ tests/storagepoolxml2xmltest.c | 1 + 5 files changed, 44 insertions(+), 4 deletions(-) create mode 100644 tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml create mode 100644 tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml diff --git a/docs/schemas/storagepool.rng b/docs/schemas/storagepool.rng index 3ca8e79..976a02b 100644 --- a/docs/schemas/storagepool.rng +++ b/docs/schemas/storagepool.rng @@ -305,7 +305,10 @@ <oneOrMore> <element name='host'> <attribute name='name'> - <text/> + <choice> + <ref name="dnsName"/> + <ref name="ipAddr"/> + </choice> </attribute> <optional> <attribute name='port'> diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c index f8c968e..3056563 100644 --- a/src/storage/storage_backend_rbd.c +++ b/src/storage/storage_backend_rbd.c @@ -268,9 +268,16 @@ virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr, source->hosts[i].name); } else if (source->hosts[i].name != NULL && source->hosts[i].port) { - virBufferAsprintf(&mon_host, "%s:%d,", - source->hosts[i].name, - source->hosts[i].port); + /* assume host containing : is ipv6 */ + if (strchr(source->hosts[i].name, ':')) { + virBufferAsprintf(&mon_host, "[%s]:%d,", + source->hosts[i].name, + source->hosts[i].port); + } else { + virBufferAsprintf(&mon_host, "%s:%d,", + source->hosts[i].name, + source->hosts[i].port); + } } else { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("received malformed monitor, check the XML definition")); diff --git a/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml b/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml new file mode 100644 index 0000000..0744b33 --- /dev/null +++ b/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml @@ -0,0 +1,13 @@ +<pool type='rbd'> + <name>ceph</name> + <uuid>47c1faee-0207-e741-f5ae-d9b019b98fe2</uuid> + <source> + <name>rbd</name> + <host name='localhost' port='6789'/> + <host name='localhost' port='6790'/> + <host name='2205::192:168:205:141' port='6789'/> + <auth username='admin' type='ceph'> + <secret uuid='2ec115d7-3a88-3ceb-bc12-0ac909a6fd87'/> + </auth> + </source> +</pool> diff --git a/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml b/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml new file mode 100644 index 0000000..cc2a379 --- /dev/null +++ b/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml @@ -0,0 +1,16 @@ +<pool type='rbd'> + <name>ceph</name> + <uuid>47c1faee-0207-e741-f5ae-d9b019b98fe2</uuid> + <capacity unit='bytes'>0</capacity> + <allocation unit='bytes'>0</allocation> + <available unit='bytes'>0</available> + <source> + <host name='localhost' port='6789'/> + <host name='localhost' port='6790'/> + <host name='2205::192:168:205:141' port='6789'/> + <name>rbd</name> + <auth type='ceph' username='admin'> + <secret uuid='2ec115d7-3a88-3ceb-bc12-0ac909a6fd87'/> + </auth> + </source> +</pool> diff --git a/tests/storagepoolxml2xmltest.c b/tests/storagepoolxml2xmltest.c index 2ae514f..b6f4cb4 100644 --- a/tests/storagepoolxml2xmltest.c +++ b/tests/storagepoolxml2xmltest.c @@ -95,6 +95,7 @@ mymain(void) DO_TEST("pool-zfs-sourcedev"); DO_TEST("pool-rbd"); #ifdef WITH_STORAGE_RBD + DO_TEST("pool-rbd-ipv6"); DO_TEST("pool-rbd-refresh-volume-allocation"); DO_TEST("pool-rbd-ns-configopts"); #endif -- 2.7.5

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[libvirt] [PATCH] virsh: Put a new line char after <alias/> in attach-disk
by Michal Privoznik 26 Apr '19

26 Apr '19

Each attribute is on its own line. We forgot to add new line character for <alias/> Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- Pushed under trivial rule. tools/virsh-domain.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/virsh-domain.c b/tools/virsh-domain.c index da57d96d1a..82140feb57 100644 --- a/tools/virsh-domain.c +++ b/tools/virsh-domain.c @@ -683,7 +683,7 @@ cmdAttachDisk(vshControl *ctl, const vshCmd *cmd) virBufferAsprintf(&buf, "<serial>%s</serial>\n", serial); if (alias) - virBufferAsprintf(&buf, "<alias name='%s'/>", alias); + virBufferAsprintf(&buf, "<alias name='%s'/>\n", alias); if (wwn) virBufferAsprintf(&buf, "<wwn>%s</wwn>\n", wwn); -- 2.21.0

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[libvirt] [PATCH 0/2] Couple of interface type fixes
by Michal Privoznik 26 Apr '19

26 Apr '19

See the following link for more info: https://www.redhat.com/archives/libvir-list/2019-April/msg01412.html Be aware that these are very hackish and I don't like them. There's still one problem - virsh domiftune still doesn't work, as in it doesn't set floor on the network bridge because the code expects interface type of network but it sees type bridge. Michal Prívozník (2): conf: Parse bandwidth.floor for interface type='bridge' too qemu: Relax interface type change check when changing an interface src/conf/domain_conf.c | 7 ++++--- src/qemu/qemu_hotplug.c | 2 +- 2 files changed, 5 insertions(+), 4 deletions(-) -- 2.21.0

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[libvirt] RFC: Introducing Memory Bandwidth Monitoring (MBM)
by Huaqiang,Wang 25 Apr '19

25 Apr '19

RFC: Introducing Memory Bandwidth Monitoring (MBM) ================================================== Kernel has removed the interfaces of getting memory bandwidth utilization interfaces from `perf` sub-module, refer to https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git/commit/?id…. Afterwards, kernel implements the `resctrl` sub-module and provides the alternative interfaces to allocate/monitor resource of cache/memory bandwidth. The cache monitoring based on `resctr` interface is already implemented, this RFC is to raise discussion on implement the memory bandwidth monitoring functionality. Very similar to the way of implementing 'cache monitoring', to support memory bandwidth monitoring, it could be considered in three aspects: * Identifying the host capability for MBM * Creating MBM groups * Reporting the result of the monitoring Identify the host capability of MBM ----------------------------------- Host MBM feature coud be identified through the standard way of enumerating host capability, such as command `virsh capability <domain>`. A host with MBM, the result of command above may contain following lines:: <capabilities> <host> … <cache> <bank id='0' level='3' type='both' size='15' unit='MiB' cpus='0-5'> <control granularity='768' min='1536' unit='KiB' type='both' maxAllocs='4'/> </bank> <monitor level='3' reuseThreshold='270336' maxMonitors='176'> <feature name='llc_occupancy'/> </monitor> </cache> <memory_bandwidth> <node id='0' cpus='0-5'> <control granularity='10' min ='10' maxAllocs='4'/> </node> <node id='1' cpus='6-11'> <control granularity='10' min ='10' maxAllocs='4'/> </node> + <monitor maxMonitors='176'> + <feature name='mbm_total_bytes'/> + <feature name='mbm_local_bytes'/> + </monitor> </memory_bandwidth> </host> </capabilities> The <monitor> element under <memory_bandwidth> indicates a memory bandwidth monitor exists, and the property 'maxMonitors' tells how many monitors could be generated, which is shared with cache monitor. The feature list inside the <monitor> element indicates MBM feature set. Create the MBM group -------------------- It is supported to create multiple monitors to a vm instance and each monitor is capable to track the memory bandwidth utilization accumulatively in bytes for specific vCPUs. To create a memory bandwidth monitor for specific vCPUs, for example create 2 memory bandwidth monitors, one is tracking the memory BW usage for vCPU0 and another is for vCPU 0-4, then you can set the request for two monitors in following way by editing the domain XML file:: <cputune> <memorytune vcpus='0-4'> <node id='0' bandwidth='20'/> <node id='1' bandwidth='30'/> + <monitor vcpus='0-4'/> + <monitor vcpus='0'/> </memorytune> </cputune> Report the result of monitor ---------------------------- The statistical results of memory bandwidth monitors could be demonstrated through command `virsh domstat <doman>` in following arrangement. virsh domstats <domain>:: ... memory.bw.monitor.count=<total number of MBM monitors> memory.bw.monitor.<monitor index>.name=<resctrl group name for this monitor> memory.bw.monitor.<monitor index>.vcpus=<vcpu set list monitored by this monitor> memory.bw.monitor.<monitor index>.controller.count=<memory controller number> memory.bw.monitor.<monitor index>.controller.<index>.local.bytes=<bytes> memory.bw.monitor.<monitor index>.controller.<index>.total.bytes=<bytes> ...

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[libvirt] [PATCH] Handle copying bitmaps to larger data buffers
by Allen, John 25 Apr '19

25 Apr '19

If a bitmap of a shorter length than the data buffer is passed to virBitmapToDataBuf, it will read off the end of the bitmap and copy junk into the returned buffer. Add a check to only copy the length of the bitmap to the buffer. The problem can be observed after setting a vcpu affinity using the vcpupin command on a system with a large number of cores: # virsh vcpupin example_domain 0 0 # virsh vcpupin example_domain 0 VCPU CPU Affinity --------------------------- 0 0,192,197-198,202 Signed-off-by: John Allen <john.allen(a)amd.com> --- diff --git a/src/util/virbitmap.c b/src/util/virbitmap.c index d074f29e54..021174cbb3 100644 --- a/src/util/virbitmap.c +++ b/src/util/virbitmap.c @@ -824,11 +824,15 @@ virBitmapToDataBuf(virBitmapPtr bitmap, unsigned char *bytes, size_t len) { + size_t nbytes = bitmap->map_len * (VIR_BITMAP_BITS_PER_UNIT / CHAR_BIT); unsigned long *l; size_t i, j; memset(bytes, 0, len); + /* If bitmap and buffer differ in size, only fill to the smaller length */ + len = MIN(len, nbytes); + /* htole64 is not provided by gnulib, so we do the conversion by hand */ l = bitmap->map; for (i = j = 0; i < len; i++, j++) {

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[libvirt] [PATCH] cpu_map: Add support for cldemote CPU feature
by Jiri Denemark 25 Apr '19

25 Apr '19

Added in QEMU by v2.12.0-481-g0da0fb0628 (released in 3.0). Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- src/cpu_map/x86_features.xml | 3 +++ 1 file changed, 3 insertions(+) diff --git a/src/cpu_map/x86_features.xml b/src/cpu_map/x86_features.xml index 02431bea29..efcc10b1ae 100644 --- a/src/cpu_map/x86_features.xml +++ b/src/cpu_map/x86_features.xml @@ -310,6 +310,9 @@ <feature name='la57'> <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x00010000'/> </feature> + <feature name='cldemote'> + <cpuid eax_in='0x07' ecx_in='0x00' ecx='0x02000000'/> + </feature> <feature name='avx512-4vnniw'> <cpuid eax_in='0x07' ecx_in='0x00' edx='0x00000004'/> -- 2.21.0

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[libvirt] [PATCH v4 0/3] Don't pm suspend guest if it's unable to wake up
by Daniel Henrique Barboza 25 Apr '19

25 Apr '19

changes from v3: - patch 3 removed. We no longer consider PM_WAKEUP_SUPPORT a cap. It is confusing to have a 'runtime cap' that can't be resolved inside qemu_capabilities.c. The suspend operation isn't time critical per se, and a call to QMP each time 'virsh dompmsuspend' is executed is not dreadful to the user experience. More information and discussion can be found at [1]. - due to the change above, patch 4 now executes the query-current-machine QMP call (if the running QEMU instance supports it) during qemuDomainPMSuspendForDuration to check if the guest has wakeup support. - previous patch link: [1] https://www.redhat.com/archives/libvir-list/2019-April/msg00767.html Daniel Henrique Barboza (2): qemu_capabilities: Add QEMU_CAPS_QUERY_CURRENT_MACHINE qemuDomainPMSuspendForDuration: check for wake-up support Michal Prívozník (1): qemu_monitor: Introduce handler for 'query-current-machine' command src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_driver.c | 54 +++++++++++++++++++ src/qemu/qemu_monitor.c | 10 ++++ src/qemu/qemu_monitor.h | 9 ++++ src/qemu/qemu_monitor_json.c | 50 +++++++++++++++++ src/qemu/qemu_monitor_json.h | 5 ++ .../caps_4.0.0.riscv32.xml | 1 + .../caps_4.0.0.riscv64.xml | 1 + .../caps_4.0.0.x86_64.xml | 1 + 10 files changed, 134 insertions(+) -- 2.20.1

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[libvirt] [PATCH] vircgroup: no need to ifdef virCgroupFree
by Pavel Hrdina 25 Apr '19

25 Apr '19

virCgroup struct is always defined and the free function is not calling anything that would require OS supporting cgroups. This fixes an issue if we try to start a VM with QEMU binary that doesn't support QXL. The start operation will fail in qemuProcessStartValidateVideo() which will set correct error message, but later in one of the cleanup paths we will call qemuDomainObjPrivateDataClear() which always calls virCgroupFree() and that will fail on OS that doesn't support cgroups and it will set a new error which will be eventually reported to user. Signed-off-by: Pavel Hrdina <phrdina(a)redhat.com> --- src/util/vircgroup.c | 62 +++++++++++++++++++------------------------- 1 file changed, 27 insertions(+), 35 deletions(-) diff --git a/src/util/vircgroup.c b/src/util/vircgroup.c index 4238d7014b..f58e336404 100644 --- a/src/util/vircgroup.c +++ b/src/util/vircgroup.c @@ -1279,33 +1279,6 @@ virCgroupNewIgnoreError(void) } -/** - * virCgroupFree: - * - * @group: The group structure to free - */ -void -virCgroupFree(virCgroupPtr *group) -{ - size_t i; - - if (*group == NULL) - return; - - for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) { - VIR_FREE((*group)->legacy[i].mountPoint); - VIR_FREE((*group)->legacy[i].linkPoint); - VIR_FREE((*group)->legacy[i].placement); - } - - VIR_FREE((*group)->unified.mountPoint); - VIR_FREE((*group)->unified.placement); - - VIR_FREE((*group)->path); - VIR_FREE(*group); -} - - /** * virCgroupHasController: query whether a cgroup controller is present * @@ -2917,14 +2890,6 @@ virCgroupNewIgnoreError(void) } -void -virCgroupFree(virCgroupPtr *group ATTRIBUTE_UNUSED) -{ - virReportSystemError(ENXIO, "%s", - _("Control groups not supported on this platform")); -} - - bool virCgroupHasController(virCgroupPtr cgroup ATTRIBUTE_UNUSED, int controller ATTRIBUTE_UNUSED) @@ -3565,6 +3530,33 @@ virCgroupControllerAvailable(int controller ATTRIBUTE_UNUSED) #endif /* !__linux__ */ +/** + * virCgroupFree: + * + * @group: The group structure to free + */ +void +virCgroupFree(virCgroupPtr *group) +{ + size_t i; + + if (*group == NULL) + return; + + for (i = 0; i < VIR_CGROUP_CONTROLLER_LAST; i++) { + VIR_FREE((*group)->legacy[i].mountPoint); + VIR_FREE((*group)->legacy[i].linkPoint); + VIR_FREE((*group)->legacy[i].placement); + } + + VIR_FREE((*group)->unified.mountPoint); + VIR_FREE((*group)->unified.placement); + + VIR_FREE((*group)->path); + VIR_FREE(*group); +} + + int virCgroupDelThread(virCgroupPtr cgroup, virCgroupThreadName nameval, -- 2.20.1

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[libvirt] [PATCH] storage: escape ipv6 for ceph mon hosts to librados
by winhong-yili 24 Apr '19

24 Apr '19

Hosts for rbd are ceph monitor daemons. These have fixed IP addresses, so they are often referenced by IP rather than hostname for convenience, or to avoid relying on DNS. Using IPv4 addresses as the host name works already, but IPv6 addresses require rbd-specific escaping because the colon is used as an option separator in the string passed to librados. Escape these colons, and enclose the IPv6 address in square brackets so it is distinguished from the port, which is currently mandatory. Signed-off-by: Yi Li <yili(a)winhong.com> --- docs/schemas/storagepool.rng | 5 ++++- src/storage/storage_backend_rbd.c | 13 ++++++++++--- tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml | 13 +++++++++++++ tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml | 16 ++++++++++++++++ tests/storagepoolxml2xmltest.c | 1 + 5 files changed, 44 insertions(+), 4 deletions(-) create mode 100644 tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml create mode 100644 tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml diff --git a/docs/schemas/storagepool.rng b/docs/schemas/storagepool.rng index 3ca8e79..976a02b 100644 --- a/docs/schemas/storagepool.rng +++ b/docs/schemas/storagepool.rng @@ -305,7 +305,10 @@ <oneOrMore> <element name='host'> <attribute name='name'> - <text/> + <choice> + <ref name="dnsName"/> + <ref name="ipAddr"/> + </choice> </attribute> <optional> <attribute name='port'> diff --git a/src/storage/storage_backend_rbd.c b/src/storage/storage_backend_rbd.c index f8c968e..3056563 100644 --- a/src/storage/storage_backend_rbd.c +++ b/src/storage/storage_backend_rbd.c @@ -268,9 +268,16 @@ virStorageBackendRBDOpenRADOSConn(virStorageBackendRBDStatePtr ptr, source->hosts[i].name); } else if (source->hosts[i].name != NULL && source->hosts[i].port) { - virBufferAsprintf(&mon_host, "%s:%d,", - source->hosts[i].name, - source->hosts[i].port); + /* assume host containing : is ipv6 */ + if (strchr(source->hosts[i].name, ':')) { + virBufferAsprintf(&mon_host, "[%s]:%d,", + source->hosts[i].name, + source->hosts[i].port); + } else { + virBufferAsprintf(&mon_host, "%s:%d,", + source->hosts[i].name, + source->hosts[i].port); + } } else { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("received malformed monitor, check the XML definition")); diff --git a/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml b/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml new file mode 100644 index 0000000..0744b33 --- /dev/null +++ b/tests/storagepoolxml2xmlin/pool-rbd-ipv6.xml @@ -0,0 +1,13 @@ +<pool type='rbd'> + <name>ceph</name> + <uuid>47c1faee-0207-e741-f5ae-d9b019b98fe2</uuid> + <source> + <name>rbd</name> + <host name='localhost' port='6789'/> + <host name='localhost' port='6790'/> + <host name='2205::192:168:205:141' port='6789'/> + <auth username='admin' type='ceph'> + <secret uuid='2ec115d7-3a88-3ceb-bc12-0ac909a6fd87'/> + </auth> + </source> +</pool> diff --git a/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml b/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml new file mode 100644 index 0000000..cc2a379 --- /dev/null +++ b/tests/storagepoolxml2xmlout/pool-rbd-ipv6.xml @@ -0,0 +1,16 @@ +<pool type='rbd'> + <name>ceph</name> + <uuid>47c1faee-0207-e741-f5ae-d9b019b98fe2</uuid> + <capacity unit='bytes'>0</capacity> + <allocation unit='bytes'>0</allocation> + <available unit='bytes'>0</available> + <source> + <host name='localhost' port='6789'/> + <host name='localhost' port='6790'/> + <host name='2205::192:168:205:141' port='6789'/> + <name>rbd</name> + <auth type='ceph' username='admin'> + <secret uuid='2ec115d7-3a88-3ceb-bc12-0ac909a6fd87'/> + </auth> + </source> +</pool> diff --git a/tests/storagepoolxml2xmltest.c b/tests/storagepoolxml2xmltest.c index 2ae514f..b6f4cb4 100644 --- a/tests/storagepoolxml2xmltest.c +++ b/tests/storagepoolxml2xmltest.c @@ -95,6 +95,7 @@ mymain(void) DO_TEST("pool-zfs-sourcedev"); DO_TEST("pool-rbd"); #ifdef WITH_STORAGE_RBD + DO_TEST("pool-rbd-ipv6"); DO_TEST("pool-rbd-refresh-volume-allocation"); DO_TEST("pool-rbd-ns-configopts"); #endif -- 2.7.5

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