September 2024 - Devel - libvirt List Archives

Entering freeze for libvirt-10.8.0
by Jiri Denemark 30 Sep '24

30 Sep '24

I have just tagged v10.8.0-rc1 in the repository and pushed signed tarballs to https://download.libvirt.org/ Please give the release candidate some testing and in case you find a serious issue which should have a fix in the upcoming release, feel free to reply to this thread to make sure the issue is more visible. If you have not done so yet, please update NEWS.rst to document any significant change you made since the last release. Thanks, Jirka

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[PATCH 00/13] qemu: zero-detection for non-shared-storage migration
by Peter Krempa 30 Sep '24

30 Sep '24

See 12/13 for rationale. The first patch fixes allocation setting when pre-creating qcow2 images for migration. Next few patches fix/improve typed parameter list handling. Next few refactor handling of 'migrate_disks' parameter and the final two implement the new feature. Peter Krempa (13): qemu: migration: Pre-create QCOW2 images for non-shared storage with 0 allocation virTypedParamsFilter: Adjust return type and docs virTypedParamsGetStringList: Refactor and adjust docs virTypedParamsFilter: Introduce option to filter also by type virTypedParamsGetStringList: Ensure that returned array is NULL if there are no matching fields virTypedParamsGetStringList: Ensure that returned string list is NULL-terminated qemuMigrationSrcBeginPhaseBlockDirtyBitmaps: Use qemuMigrationAnyCopyDisk() qemu: migration: Don't log 'nmigrate_disks' qemu: migration: Avoid use of 'nmigration_disks' qemu: migration: Extract validation of disk target list qemu: migration: Remove 'nmigration_disks' variable from all places qemu: Introduce and wire in 'VIR_MIGRATE_PARAM_MIGRATE_DISKS_DETECT_ZEROES' virsh: Add support for VIR_MIGRATE_PARAM_MIGRATE_DISKS_DETECT_ZEROES migration parameter docs/manpages/virsh.rst | 8 +- include/libvirt/libvirt-domain.h | 13 ++ src/qemu/qemu_driver.c | 55 +++--- src/qemu/qemu_migration.c | 299 +++++++++++++++++-------------- src/qemu/qemu_migration.h | 7 +- src/util/virtypedparam.c | 72 ++++---- src/util/virtypedparam.h | 3 +- tests/virtypedparamtest.c | 14 +- tools/virsh-domain.c | 26 +++ 9 files changed, 287 insertions(+), 210 deletions(-) -- 2.46.0

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[PATCH v2 00/18] tcg plugins pre-PR (deprecations, mem apis, contrib plugins)
by Alex Bennée 30 Sep '24

30 Sep '24

I think all these are ready to go having been mostly reviewed in previous series. The following still need review: util/timer: avoid deadlock when shutting down tests/tcg: add a system test to check memory instrumentation tests/tcg: ensure s390x-softmmu output redirected tests/tcg/multiarch: add test for plugin memory access (0 acks, 1 sobs, 1 tbs) v2 - fix some nits - included fix to ips posted as an RFC before Alex. Akihiko Odaki (1): contrib/plugins: Add a plugin to generate basic block vectors Alex Bennée (9): deprecation: don't enable TCG plugins by default on 32 bit hosts deprecation: don't enable TCG plugins by default with TCI contrib/plugins: control flow plugin tests/tcg: clean up output of memory system test tests/tcg: only read/write 64 bit words on 64 bit systems tests/tcg: ensure s390x-softmmu output redirected tests/tcg: add a system test to check memory instrumentation util/timer: avoid deadlock when shutting down contrib/plugins: avoid hanging program Pierrick Bouvier (6): plugins: save value during memory accesses plugins: extend API to get latest memory value accessed tests/tcg: add mechanism to run specific tests with plugins tests/tcg: allow to check output of plugins tests/tcg/plugins/mem: add option to print memory accesses tests/tcg/multiarch: add test for plugin memory access Rowan Hart (2): plugins: add plugin API to read guest memory plugins: add option to dump write argument to syscall plugin docs/about/deprecated.rst | 19 + docs/about/emulation.rst | 44 +- configure | 32 +- accel/tcg/atomic_template.h | 66 ++- include/hw/core/cpu.h | 4 + include/qemu/plugin.h | 4 + include/qemu/qemu-plugin.h | 64 ++- contrib/plugins/bbv.c | 158 +++++++ contrib/plugins/cflow.c | 384 ++++++++++++++++++ contrib/plugins/ips.c | 5 + plugins/api.c | 53 +++ plugins/core.c | 6 + tcg/tcg-op-ldst.c | 66 ++- tests/tcg/multiarch/system/memory.c | 123 ++++-- tests/tcg/multiarch/test-plugin-mem-access.c | 177 ++++++++ tests/tcg/plugins/mem.c | 248 ++++++++++- tests/tcg/plugins/syscall.c | 117 ++++++ util/qemu-timer.c | 14 +- accel/tcg/atomic_common.c.inc | 13 +- accel/tcg/ldst_common.c.inc | 38 +- contrib/plugins/Makefile | 2 + plugins/qemu-plugins.symbols | 2 + tests/tcg/Makefile.target | 12 +- tests/tcg/alpha/Makefile.softmmu-target | 2 +- tests/tcg/alpha/Makefile.target | 3 + tests/tcg/multiarch/Makefile.target | 11 + tests/tcg/multiarch/check-plugin-output.sh | 36 ++ .../multiarch/system/Makefile.softmmu-target | 6 + .../system/validate-memory-counts.py | 129 ++++++ tests/tcg/ppc64/Makefile.target | 5 + tests/tcg/s390x/Makefile.softmmu-target | 8 +- 31 files changed, 1768 insertions(+), 83 deletions(-) create mode 100644 contrib/plugins/bbv.c create mode 100644 contrib/plugins/cflow.c create mode 100644 tests/tcg/multiarch/test-plugin-mem-access.c create mode 100755 tests/tcg/multiarch/check-plugin-output.sh create mode 100755 tests/tcg/multiarch/system/validate-memory-counts.py -- 2.39.5

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[RFC PATCH v2 0/8] swtpm: Add support for profiles
by Stefan Berger 30 Sep '24

30 Sep '24

Upcoming libtpms v0.10 and swtpm v0.10 will have TPM profile support that allows to restrict a TPM's provided set of crypto algorithms and commands and through which backwards compatibility and migration from newer versions of libtpms to older ones (up to libtpms v0.9) is supported. For the latter to work it is necessary that the user chooses the right ('null') profile. This series adds support for passing a profile choice to swtpm_setup by setting it in the domain XML using the <profile/> XML node. An optional attribute 'remove_disabled' can be set in this node and accepts two values: "check": test a few crypto algorithms (tdes, camellia, unpadded encryption, and others) for whether they are currently disabled due to FIPS mode on the host and remove these algorithms in the 'custom' profile if they are disabled; "fips-host": do not test but remove all the possibly disabled crypto algorithms (from list above) Also extend the documentation but point the user to swtpm and libtpms documentation for further details. Follow Deniel's suggestions there's now a PR for swtpm_setup to support searching for profiles though a configurable local directory, distro directory and if no profile could be found there (with appended ".json" suffix) it will fall back to try to use a built-in profile by the provided name: https://github.com/stefanberger/swtpm/pull/918 Stefan Stefan Berger (8): conf: Move TPM emulator parameters into own struct qemu: Pass virQEMUDriverConfig rather than some of its fields util: Add parsing support for swtpm_setup's cmdarg-profile capability conf: Define enum virDomainTPMProfileRemoveDisabled schema: Extend schema for TPM emulator profile node conf: Add support for profile parameter on TPM emulator in domain XML docs: Add documentation for the TPM backend profile node qemu: Extend swtpm_setup command line to set a profile by its name docs/formatdomain.rst | 30 ++++++++ src/conf/domain_conf.c | 43 +++++++++++ src/conf/domain_conf.h | 35 ++++++--- src/conf/domain_validate.c | 7 ++ src/conf/schemas/domaincommon.rng | 25 ++++++ src/conf/virconftypes.h | 2 + src/qemu/qemu_tpm.c | 124 +++++++++++++++++------------- src/util/virtpm.c | 1 + src/util/virtpm.h | 1 + tests/testutilsqemu.c | 1 + 10 files changed, 203 insertions(+), 66 deletions(-) -- 2.46.1

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[PATCH] NEWS: add blurbs about a couple of bugs I fixed this month
by Laine Stump 30 Sep '24

30 Sep '24

Signed-off-by: Laine Stump <laine(a)redhat.com> --- NEWS.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index beea8221e1..617af915b3 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -19,6 +19,19 @@ v10.8.0 (unreleased) * **Improvements** + * network: make networks with <forward mode='open'/> more useful + + It is now permissable to have a <forward mode='open'> network that + has no IP address assigned to the host's port of the bridge. This + is the only way to create a libvirt network where guests are + unreachable from the host (and vice versa) and also 0 firewall + rules are added on the host. + + It is now also possible for a <forward mode='open'/> network to + use the "zone" attribute of <bridge> to set the firewalld zone of + the bridge interface (normally it would not be set, as is done + with other forward modes). + * **Bug fixes** * virsh: Fix script-friedly output of ``virsh list --uuid`` @@ -32,6 +45,18 @@ v10.8.0 (unreleased) Note that this also broke the ``libvirt-guests`` script. The bug was introduced in `v10.7.0 (2024-09-02)`_. + * network/qemu: fix some cases where device-update of a network + interface was failing: + + * If the interface was connected to a libvirt network that was + providing a pool of VFs to be used with macvtap passthrough + mode, then *any* update to the interface would fail, even + changing the link state. Updating (the updateable parts of) a + macvtap passthrough interface will now succeed. + + * It previously was not possible to move an interface from a Linux + host bridge to an OVS bridge. This (and the opposite direction) + now works. v10.7.0 (2024-09-02) ==================== -- 2.46.1

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[PATCH v2] docs: Mark "gluster" support in QEMU as deprecated
by Thomas Huth 30 Sep '24

30 Sep '24

According to https://marc.info/?l=fedora-devel-list&m=171934833215726 the GlusterFS development effectively ended. Thus mark it as deprecated in QEMU, so we can remove it in a future release if the project does not gain momentum again. Acked-by: Niels de Vos <ndevos(a)redhat.com> Signed-off-by: Thomas Huth <thuth(a)redhat.com> --- v2: Mark it as deprecated in the QAPI and print a warning once, too docs/about/deprecated.rst | 9 +++++++++ qapi/block-core.json | 7 ++++++- block/gluster.c | 2 ++ 3 files changed, 17 insertions(+), 1 deletion(-) diff --git a/docs/about/deprecated.rst b/docs/about/deprecated.rst index ed31d4b0b2..b231aa3948 100644 --- a/docs/about/deprecated.rst +++ b/docs/about/deprecated.rst @@ -395,6 +395,15 @@ Specifying the iSCSI password in plain text on the command line using the used instead, to refer to a ``--object secret...`` instance that provides a password via a file, or encrypted. +``gluster`` backend (since 9.2) +^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ + +According to https://marc.info/?l=fedora-devel-list&m=171934833215726 +the GlusterFS development effectively ended. Unless the development +gains momentum again, the QEMU project might remove the gluster backend +in a future release. + + Character device options '''''''''''''''''''''''' diff --git a/qapi/block-core.json b/qapi/block-core.json index 9f6dd59298..cb7cb1c0ed 100644 --- a/qapi/block-core.json +++ b/qapi/block-core.json @@ -3187,12 +3187,17 @@ # # @snapshot-access: Since 7.0 # +# Features: +# +# @deprecated: Member @gluster is deprecated since GlusterFS ceased development +# # Since: 2.9 ## { 'enum': 'BlockdevDriver', 'data': [ 'blkdebug', 'blklogwrites', 'blkreplay', 'blkverify', 'bochs', 'cloop', 'compress', 'copy-before-write', 'copy-on-read', 'dmg', - 'file', 'snapshot-access', 'ftp', 'ftps', 'gluster', + 'file', 'snapshot-access', 'ftp', 'ftps', + {'name': 'gluster', 'features': [ 'deprecated' ] }, {'name': 'host_cdrom', 'if': 'HAVE_HOST_BLOCK_DEVICE' }, {'name': 'host_device', 'if': 'HAVE_HOST_BLOCK_DEVICE' }, 'http', 'https', diff --git a/block/gluster.c b/block/gluster.c index f8b415f381..f03d05251e 100644 --- a/block/gluster.c +++ b/block/gluster.c @@ -809,6 +809,8 @@ static int qemu_gluster_open(BlockDriverState *bs, QDict *options, goto out; } + warn_report_once("'gluster' is deprecated"); + filename = qemu_opt_get(opts, GLUSTER_OPT_FILENAME); s->debug = qemu_opt_get_number(opts, GLUSTER_OPT_DEBUG, -- 2.46.0

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[PATCH] NEWS: Describe more fixed things for this release
by Martin Kletzander 30 Sep '24

30 Sep '24

Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com> --- Applies on master before Laine's and Peter's updates, but I'll move the items below the others once they are pushed (or hopefully Jirka if I don't notice until release). NEWS.rst | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index beea8221e1c0..472bedd04436 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -19,6 +19,11 @@ v10.8.0 (unreleased) * **Improvements** + * Relax restrictions for memorytune settings + + It should now be possible to use resctrl on AMD CPUs as well as Intel CPUs + when the resctrl filesystem is mounted with ``mba_MBps`` option. + * **Bug fixes** * virsh: Fix script-friedly output of ``virsh list --uuid`` @@ -32,6 +37,20 @@ v10.8.0 (unreleased) Note that this also broke the ``libvirt-guests`` script. The bug was introduced in `v10.7.0 (2024-09-02)`_. + * network: Better cleanup after disappeared networks + + If a network disappeared while virtnetworkd was not running not all clean up + was done properly once the daemon was started, especially when only the + network interface disappeared. This could have in some cases resulted in + the network being shown as inactive, but not being able to start. + + * qemu: Remember memory backing directory for domains + + If ``memory_backing_dir`` is changed during the lifetime of a domain with + file backed memory, files in the old directory would not be cleaned up once + the domain is shut down. Now the directory that was used during startup is + remembered for each running domain. + v10.7.0 (2024-09-02) ==================== -- 2.46.2

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Re: [PATCH RFC v4 11/17] qemu: block: Support block disk along with throttle filters
by Edward Arulanadam 30 Sep '24

30 Sep '24

Dear All, My sincere apologies on reaching out regarding this change as I know, someone would be reviewing the change and provide review comments as per the community guidelines. Since this change is very critical for us to move forward, may I request for a review and let us know if this is good now. Thanks and Regards, Edward Arulanandam

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[libvirt PATCH] NEWS: YAJL -> json-c switch
by Ján Tomko 30 Sep '24

30 Sep '24

Signed-off-by: Ján Tomko <jtomko(a)redhat.com> --- NEWS.rst | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index beea8221e1..0cbc0227db 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -19,6 +19,12 @@ v10.8.0 (unreleased) * **Improvements** + * Switch from YAJL to json-c for JSON parsing and formatting + + The parser and formatter in the libvirt library, as well + as the parsers in the nss plugin were rewritten to use json-c + instead of YAJL, which is effectively dead upstream. + * **Bug fixes** * virsh: Fix script-friedly output of ``virsh list --uuid`` -- 2.46.1

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[PATCH] qemu: Look for qemu-bridge-helper in more directories
by Andrea Bolognani 30 Sep '24

30 Sep '24

Commit 0caacf47d7b423db9126660fb0382ed56cd077c1 recently made it so the new path used for qemu-bridge-helper in Debian would be allowed, but the logic used to actually figure out the complete path for the helper was not updated accordingly. https://bugs.debian.org/1082530 Signed-off-by: Andrea Bolognani <abologna(a)redhat.com> --- src/hypervisor/domain_interface.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/hypervisor/domain_interface.c b/src/hypervisor/domain_interface.c index 5cdba279fa..5bc698d272 100644 --- a/src/hypervisor/domain_interface.c +++ b/src/hypervisor/domain_interface.c @@ -541,6 +541,7 @@ virDomainCreateInBridgePortWithHelper(const char *bridgeHelperName, unsigned int flags) { const char *const bridgeHelperDirs[] = { + "/usr/libexec/qemu", "/usr/libexec", "/usr/lib/qemu", "/usr/lib", -- 2.46.1

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