November 2021 - Devel - libvirt List Archives

[PATCH 0/6] Add virt-pki-query-dn binary
by Martin Kletzander 11 Nov '21

11 Nov '21

*** BLURB HERE *** Martin Kletzander (6): rpc: Resize dname for longer DN from TLS certs tools: Add virt-pki-query-dn binary docs: Simplify explanation of tls_allowed_dn_list wildcards Remove needless space Add suggestions for virt-pki-query-dn usage news: Mention the addition of virt-pki-query-dn binary NEWS.rst | 6 ++ docs/remote.html.in | 8 +- libvirt.spec.in | 1 + po/POTFILES.in | 1 + src/remote/libvirtd.conf.in | 7 +- src/rpc/virnettlscontext.c | 22 ++--- tests/virconfdata/libvirtd.conf | 9 ++- tests/virconfdata/libvirtd.out | 9 ++- tools/meson.build | 26 ++++++ tools/virt-pki-query-dn.c | 137 ++++++++++++++++++++++++++++++++ 10 files changed, 207 insertions(+), 19 deletions(-) create mode 100644 tools/virt-pki-query-dn.c -- 2.33.1

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[PATCH 0/7] Misc g_auto() rewrites
by Michal Privoznik 11 Nov '21

11 Nov '21

I've been looking at our tests lately and noticed an opportunity to rewrite pieces of code to g_auto() magic. Michal Prívozník (7): qemuagenttest: Don't leak virTypedParameter on failure Prefer g_auto(GStrv) over g_strfreev() qemu: Use g_autoptr(qemuMonitorCPUModelInfo) qemuConnectStealCPUModelFromInfo: Drop needless 'cleanup' label tests: Use g_autoptr(qemuMonitorTest) test: Use g_autofree more tests: Drop cleanup/error labels src/bhyve/bhyve_command.c | 3 +- src/bhyve/bhyve_parse_command.c | 22 +-- src/libxl/libxl_conf.c | 9 +- src/libxl/xen_common.c | 18 +- src/libxl/xen_xl.c | 17 +- src/lxc/lxc_container.c | 4 +- src/lxc/lxc_native.c | 24 +-- src/qemu/qemu_driver.c | 17 +- src/remote/remote_daemon_dispatch.c | 3 +- src/remote/remote_driver.c | 4 +- src/storage/storage_backend_rbd.c | 3 +- src/util/vircgroup.c | 3 +- src/util/vircgroupv2.c | 4 +- src/util/virfirmware.c | 6 +- src/util/viruri.c | 3 +- src/vbox/vbox_common.c | 12 +- src/vbox/vbox_snapshot_conf.c | 40 ++-- src/vbox/vbox_tmpl.c | 3 +- src/vz/vz_sdk.c | 3 +- tests/qemuagenttest.c | 286 ++++++++++++---------------- tests/qemucapabilitiestest.c | 22 +-- tests/qemuhotplugtest.c | 3 +- tests/qemumigparamstest.c | 40 ++-- tests/qemumonitorjsontest.c | 95 ++++----- tests/qemumonitortestutils.c | 63 +++--- tests/vboxsnapshotxmltest.c | 3 +- tests/virconftest.c | 3 +- tests/virfiletest.c | 3 +- tests/virstringtest.c | 3 +- tools/virsh-host.c | 13 +- tools/virt-login-shell-helper.c | 7 +- tools/vsh.c | 4 +- 32 files changed, 279 insertions(+), 464 deletions(-) -- 2.32.0

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[PATCH for-6.2] docs: Deprecate incorrectly typed device_add arguments
by Kevin Wolf 11 Nov '21

11 Nov '21

While introducing a non-QemuOpts code path for device creation for JSON -device, we noticed that QMP device_add doesn't check its input correctly (accepting arguments that should have been rejected), and that users may be relying on this behaviour (libvirt did until it was fixed recently). Let's use a deprecation period before we fix this bug in QEMU to avoid nasty surprises for users. Signed-off-by: Kevin Wolf <kwolf(a)redhat.com> --- docs/about/deprecated.rst | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index 600031210d..c03fcf951f 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -250,6 +250,20 @@ options are removed in favor of using explicit ``blockdev-create`` and ``blockdev-add`` calls. See :doc:`/interop/live-block-operations` for details. +Incorrectly typed ``device_add`` arguments (since 6.2) +'''''''''''''''''''''''''''''''''''''''''''''''''''''' + +Due to shortcomings in the internal implementation of ``device_add``, QEMU +incorrectly accepts certain invalid arguments: Any object or list arguments are +silently ignored. Other argument types are not checked, but an implicit +conversion happens, so that e.g. string values can be assigned to integer +device properties or vice versa. + +This is a bug in QEMU that will be fixed in the future so that previously +accepted incorrect commands will return an error. Users should make sure that +all arguments passed to ``device_add`` are consistent with the documented +property types. + System accelerators ------------------- -- 2.31.1

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[PATCH 0/5] Use virXXXEndAPI() more
by Michal Privoznik 11 Nov '21

11 Nov '21

*** BLURB HERE *** Michal Prívozník (5): Use virDomainObjEndAPI() more Use virInterfaceObjEndAPI() more Use virNWFilterBindingObjEndAPI() more Use virNodeDeviceObjEndAPI() more Use virSecretObjEndAPI() more src/conf/virdomainobjlist.c | 24 +++++++----------------- src/conf/virinterfaceobj.c | 3 +-- src/conf/virnodedeviceobj.c | 3 +-- src/conf/virnwfilterbindingobjlist.c | 10 +++------- src/conf/virsecretobj.c | 3 +-- src/libxl/libxl_driver.c | 3 +-- 6 files changed, 14 insertions(+), 32 deletions(-) -- 2.32.0

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[PATCH 0/1] Fix the bug about virsh attach-interface from an ovs
by jx8zjs 11 Nov '21

11 Nov '21

bridge_driver: use ovs-vsctl to setup and clean Qos when using an OVS bridge Fix bug 1826168: bridge type network with ovs bridge can start with Qos setting which do not take any effect Resolves:https://bugzilla.redhat.com/show_bug.cgi?id=1826168 zhangjl02 (1): bridge_driver: use ovs-vsctl to setup and clean Qos when using an OVS bridge src/network/bridge_driver.c | 65 +++++++++++++++++++++++++++++++------ 1 file changed, 55 insertions(+), 10 deletions(-) -- 2.30.2.windows.1

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[PATCH v1 0/2] qemu_process: ensure the reboot process is performed completely
by Bihong Yu 11 Nov '21

11 Nov '21

When the vm reboot in ACPI mode, the vm has a certain probability to be shutoff or paused status if the libvirtd is restarted for some reason, which is not expected. This patchset ensure the reboot process is performed completely. Bihong Yu (2): qemu_process: set fakereboot flags false after processing fakereboot over qemu_process: continue to process fakereboot after restarting libvirtd src/qemu/qemu_process.c | 13 ++++++++----- 1 file changed, 8 insertions(+), 5 deletions(-) -- 2.27.0

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[libvirt PATCH v2 0/1] Ignore EPERM on attempts to clear a VF VLAN ID
by Dmitrii Shcherbakov 10 Nov '21

10 Nov '21

SmartNIC DPUs may not expose some privileged eswitch operations to the hypervisor hosts. For example, this happens with Bluefield devices running in the ECPF (default) mode [1] for security reasons. While VF MAC address programming is possible via an RTM_SETLINK operation, trying to set a VLAN ID in the same operation will fail with EPERM. In the kernel a relevant call chain may look like do_setlink -> do_setvfinfo -> dev->netdev_ops->set_vf_vlan which calls a driver-specific function like [2] eventually. The equivalent ip link commands below provide an illustration: 1. This works: sudo ip link set enp130s0f0 vf 2 mac de:ad:be:ef:ca:fe 2. Setting (or clearing) a VLAN fails with EPERM: sudo ip link set enp130s0f0 vf 2 vlan 0 RTNETLINK answers: Operation not permitted 3. This is what Libvirt attempts to do today (when trying to clear a VF VLAN at the same time as programming a VF MAC). sudo ip link set enp130s0f0 vf 2 vlan 0 mac de:ad:be:ef:ca:fe RTNETLINK answers: Operation not permitted If setting an explicit VLAN ID results in an EPERM, clearing a VLAN (setting a VLAN ID to 0) can be handled gracefully by ignoring the EPERM error with the rationale being that if we cannot set this state in the first place, we cannot clear it either. Thus, virNetDevSetVfConfig is split into two distinct functions. If clearing a VLAN ID fails with EPERM, the error is simply ignored. Both new functions rely virNetDevSendVfSetLinkRequest that implements common functionality related to formatting a request, sending it and handling error conditions and returns 0 or an error since in both cases the payload is either NLMSG_DONE (no error) or NLMSG_ERROR where an error message is needed by the caller to handle known cases appropriately. This function allows the conditional code to be unit tested. An alternative to this could be providing a higher level control plane mechanism that would provide metadata about a device being remotely managed in which case Libvirt would avoid trying to set or clear a VLAN ID. This would be more complicated since other software (like Nova in the OpenStack case) would have to annotate every guest device with an attribute indicating whether a device is remotely managed or not based on operator provided configuration so that Libvirt can act on this and avoid VLAN programming. https://gitlab.com/dmitriis/libvirt/-/pipelines/406528913 [1] https://docs.mellanox.com/display/BlueFieldSWv35111601/Modes+of+Operation#M… [2] https://github.com/torvalds/linux/blob/v5.15/drivers/net/ethernet/mellanox/… Dmitrii Shcherbakov (1): Ignore EPERM on attempts to clear VF VLAN ID src/libvirt_private.syms | 7 ++ src/util/virnetdev.c | 199 ++++++++++++++++++++++------------- src/util/virnetdevpriv.h | 44 ++++++++ tests/virnetdevtest.c | 222 ++++++++++++++++++++++++++++++++++++++- 4 files changed, 396 insertions(+), 76 deletions(-) create mode 100644 src/util/virnetdevpriv.h -- 2.32.0

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[PATCH] libxl: Free data returned from libxl_userdata_retrieve
by Jim Fehlig 10 Nov '21

10 Nov '21

Found via valgrind ==15016== 3,701 bytes in 2 blocks are definitely lost in loss record 975 of 1,009 ==15016== at 0x4C2A2AF: malloc (in /usr/lib64/valgrind/vgpreload_memcheck-amd64-linux.so) ==15016== by 0x1FCD30CB: libxl_read_file_contents (in /usr/lib64/libxenlight.so.4.12.0) ==15016== by 0x1FCCA58A: ??? (in /usr/lib64/libxenlight.so.4.12.0) ==15016== by 0x1FCCA6C2: libxl_userdata_retrieve (in /usr/lib64/libxenlight.so.4.12.0) ==15016== by 0x1FA42A5A: libxlReconnectDomain (libxl_driver.c:394) ==15016== by 0x53BAC99: virDomainObjListHelper (virdomainobjlist.c:802) ==15016== by 0x530842F: virHashForEach (virhash.c:575) ==15016== by 0x53BC0E0: virDomainObjListForEach (virdomainobjlist.c:817) ==15016== by 0x1FA423C4: libxlReconnectDomains (libxl_driver.c:468) ==15016== by 0x1FA423C4: libxlStateInitialize (libxl_driver.c:778) ==15016== by 0x54E8E9E: virStateInitialize (libvirt.c:657) ==15016== by 0x12DBFA: daemonRunStateInit (remote_daemon.c:797) ==15016== by 0x535BF79: virThreadHelper (virthread.c:206) Signed-off-by: Jim Fehlig <jfehlig(a)suse.com> --- src/libxl/libxl_driver.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/libxl/libxl_driver.c b/src/libxl/libxl_driver.c index 7ea157f9c4..1a9bf8f186 100644 --- a/src/libxl/libxl_driver.c +++ b/src/libxl/libxl_driver.c @@ -461,6 +461,7 @@ libxlReconnectDomain(virDomainObj *vm, cleanup: libxl_dominfo_dispose(&d_info); + VIR_FREE(data); virObjectUnlock(vm); virObjectUnref(vm); virObjectUnref(cfg); -- 2.33.0

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[PATCH 0/2] Remove support for tls_allowed_dn_list
by Martin Kletzander 10 Nov '21

10 Nov '21

Patch 1/2 details the reasons for this change. Martin Kletzander (2): tls: Drop support for tls_allowed_dn_list news: Add information about removing tls_allowed_dn_list NEWS.rst | 6 ++++ docs/remote.html.in | 26 -------------- docs/tlscerts.html.in | 6 ---- src/remote/libvirtd.aug.in | 1 - src/remote/libvirtd.conf.in | 16 --------- src/remote/remote_daemon.c | 2 -- src/remote/remote_daemon_config.c | 19 +++++----- src/remote/remote_daemon_config.h | 1 - src/remote/test_libvirtd.aug.in | 4 --- src/rpc/virnettlscontext.c | 60 ++++++------------------------- src/rpc/virnettlscontext.h | 2 -- tests/virconfdata/libvirtd.conf | 17 --------- tests/virconfdata/libvirtd.out | 14 -------- tests/virnettlscontexttest.c | 1 - tests/virnettlssessiontest.c | 1 - 15 files changed, 27 insertions(+), 149 deletions(-) -- 2.33.1

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[PATCH v4 0/5] qapi: Add feature flags to enum members
by Markus Armbruster 09 Nov '21

09 Nov '21

PATCH 1+2 add feature flags to enum members. Awkward due to an introspection design mistake; see PATCH 1 for details. PATCH 3+4 implement policy deprecated-input={reject,crash} for enum values. Policy deprecated-output=hide is not implemented, because we can't hide a value without hiding the entire member, which is almost certainly more than the requester of this policy bargained for. Perhaps we want a new policy deprecated-output=hide-or-else-crash to help us catch unwanted use of deprecated enum values. Perhaps we want deprecated-output=hide to behave that way together with deprecated-input=crash. Or even always. Thoughts? PATCH 5 puts the new feature flags to use. It's RFC because it makes sense only on top of Vladimir's deprecation of drive-backup. See its commit message for a reference. I prefer to commit new features together with a use outside tests/. PATCH 5 adds such a use, but it's RFC, because it depends on Vladimir's work. Perhaps another use pops up. I can delay this work in the hope of a use becoming ready, but the feature flags work I have in the pipeline will eventually force my hand. v4: * PATCH 1: Deprecate SchemaInfoEnum member @values. * PATCH 2: Doc tweak v3: * PATCH 1+2: Update qapi-code-gen.rst [Kevin, Eric] * PATCH 4: Commit message typo [Eric], doc update moved to PATCH 2 * PATCH 5: Doc comment FIXME resolved [Kevin] v2: * Rebased with straightforward conflicts. * PATCH 1-4: No longer RFC. * PATCH 1: "Since" information fixed [Eric]. Commit message updated to reflect feedback. * PATCH 2: Commit message amended to point out special feature flag 'deprecated' is ignored at this stage. * PATCH 4: Documentation updated. Commit message tweaked. Markus Armbruster (5): qapi: Enable enum member introspection to show more than name qapi: Add feature flags to enum members qapi: Move compat policy from QObject to generic visitor qapi: Implement deprecated-input={reject,crash} for enum values block: Deprecate transaction type drive-backup docs/about/deprecated.rst | 6 ++++ docs/devel/qapi-code-gen.rst | 29 ++++++++++++++----- qapi/compat.json | 3 ++ qapi/introspect.json | 28 ++++++++++++++++-- qapi/transaction.json | 6 +++- include/qapi/qobject-input-visitor.h | 4 --- include/qapi/qobject-output-visitor.h | 4 --- include/qapi/util.h | 6 +++- include/qapi/visitor-impl.h | 3 ++ include/qapi/visitor.h | 9 ++++++ qapi/qapi-visit-core.c | 27 +++++++++++++++-- qapi/qmp-dispatch.c | 4 +-- qapi/qobject-input-visitor.c | 14 +-------- qapi/qobject-output-visitor.c | 14 +-------- scripts/qapi/expr.py | 3 +- scripts/qapi/introspect.py | 19 +++++++++--- scripts/qapi/schema.py | 22 ++++++++++++-- scripts/qapi/types.py | 17 ++++++++++- tests/qapi-schema/doc-good.json | 5 +++- tests/qapi-schema/doc-good.out | 3 ++ tests/qapi-schema/doc-good.txt | 3 ++ .../qapi-schema/enum-dict-member-unknown.err | 2 +- tests/qapi-schema/qapi-schema-test.json | 3 +- tests/qapi-schema/qapi-schema-test.out | 1 + tests/qapi-schema/test-qapi.py | 1 + 25 files changed, 174 insertions(+), 62 deletions(-) -- 2.31.1

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