January 2025 - Devel - libvirt List Archives

[PATCH V2 00/20] qemu: support mapped-ram+directio+mulitfd
by Jim Fehlig 24 Jan '25

24 Jan '25

I'm claiming this to be V2 of a series to support QEMU's mapped-ram stream format [1] and migration capability, even though the approach to control the feature is different than V1. To control mapped-ram in V1, I bumped the save format version and added a 'features' field to the save image header. In V2, I use the save_image_format setting in qemu.conf, extending it with a 'sparse' option to enable mapped-ram. IMO, the latter is nicer approach that fits better with existing save options. V2 leaves the "raw" save image format as default. save_image_format must be set to "sparse" to enable use of mapped-ram. Like V1, this version of the series also includes patches that leverage mapped-ram to add support for parallel save/restore. In one of the previous threads on this topic we discussed per-VM control of save image format by adding a 'format' parameter to virDomainSaveParams. I can do that as a followup series if folks agree its useful. Changes in V2 * Use save_image_format setting to control mapped-ram instead of introducing a new field to the header and bumping the save image version * Rename save parameter parallel-connections to parallel-channels * Address other minor comments from V1 [1] https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/MNB… Claudio Fontana (3): include: Define constants for parallel save/restore tools: add parallel parameter to virsh save command tools: add parallel parameter to virsh restore command Jim Fehlig (17): lib: virDomain{Save,Restore}Params: Ensure absolute path qemu_fd: Add function to retrieve fdset ID qemu: Add function to check capability in migration params qemu: Add function to get bool value from migration params qemu: Add mapped-ram migration capability qemu: Add function to get migration params for save qemu_saveimage: add "sparse" to supported save image formats qemu: Add helper function for creating save image fd qemu: Move declaration of virQEMUSaveFormat to header file qemu: Add support for mapped-ram on save qemu: Decompose qemuSaveImageOpen qemu: Move creation of qemuProcessIncomingDef struct qemu: Apply migration parameters in qemuMigrationDstRun qemu: Add support for mapped-ram on restore qemu: Support O_DIRECT with mapped-ram on save qemu: Support O_DIRECT with mapped-ram on restore qemu: Add support for parallel save and restore docs/manpages/virsh.rst | 21 ++- include/libvirt/libvirt-domain.h | 11 ++ src/libvirt-domain.c | 95 +++++++++++--- src/qemu/qemu.conf.in | 9 +- src/qemu/qemu_driver.c | 108 +++++++++++----- src/qemu/qemu_fd.c | 18 +++ src/qemu/qemu_fd.h | 3 + src/qemu/qemu_migration.c | 194 +++++++++++++++++++--------- src/qemu/qemu_migration.h | 10 +- src/qemu/qemu_migration_params.c | 92 ++++++++++++++ src/qemu/qemu_migration_params.h | 17 +++ src/qemu/qemu_monitor.c | 40 ++++++ src/qemu/qemu_monitor.h | 5 + src/qemu/qemu_process.c | 117 ++++++++++++----- src/qemu/qemu_process.h | 19 ++- src/qemu/qemu_saveimage.c | 211 ++++++++++++++++++------------- src/qemu/qemu_saveimage.h | 39 +++++- src/qemu/qemu_snapshot.c | 29 +++-- tools/virsh-domain.c | 79 ++++++++++-- 19 files changed, 856 insertions(+), 261 deletions(-) -- 2.43.0

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[PATCH v5 0/5] ch: handle events from cloud-hypervisor
by Purna Pavan Chandra Aekkaladevi 24 Jan '25

24 Jan '25

changes from v4->v5: * Incase of invalid events, exit VirCHEventHandler * Open eventmonitor fifo (Reader end) in virCHMonitorNew itself. This way, we can clean exit incase open fails for some reason. changes from v3->v4: * Don't abort; instead kill the VM and exit * use g_clear_pointer along with g_free * Fix possible memory leak changes from v2->v3: * Remove patch 'utils: Implement virFileIsNamedPipe' as it is no more needed. * Remove the eventmonitorpath only if it exists * Added domain name as a prefix to logs from ch_events.c. This will make debugging easier. * Simplified event parsing logic by reserving a byte for null char. changes from v1->v2: * Rebase on latest master * Use /* */ for comments * Remove fifo file if already exists * Address other comments from Praveen Paladugu cloud-hypervisor raises various events, including VM lifecylce operations such as boot, shutdown, pause, resume, etc. Libvirt will now read these events and take the necessary actions, such as correctly updating the domain state. A FIFO file is passed to `--event-monitor` option of cloud-hypervisor. Libvirt creates a new thread that acts as the reader of the fifo file and continuously monitors for new events. Currently, shutdown events are handled by updating the domain state appropriately. Purna Pavan Chandra Aekkaladevi (5): ch: pass --event-monitor option to cloud-hypervisor ch: start a new thread for handling ch events ch: events: Read and parse cloud-hypervisor events ch: events: facilitate lifecycle events handling NEWS: Mention event handling support in ch driver NEWS.rst | 7 + po/POTFILES | 1 + src/ch/ch_events.c | 312 ++++++++++++++++++++++++++++++++++++++++++++ src/ch/ch_events.h | 54 ++++++++ src/ch/ch_monitor.c | 76 ++++++++++- src/ch/ch_monitor.h | 12 ++ src/ch/meson.build | 2 + 7 files changed, 458 insertions(+), 6 deletions(-) create mode 100644 src/ch/ch_events.c create mode 100644 src/ch/ch_events.h -- 2.34.1

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[PATCH] qemu: Allow virDomainBlockJobSetSpeed during migration
by Jiri Denemark 24 Jan '25

24 Jan '25

When a migration with non-shared storage is started with VIR_MIGRATE_PARAM_BANDWIDTH set, it will be applied to both memory migration and each block job started for storage migration. Once the migration is running virDomainMigrateSetMaxSpeed may be used to change the bandwidth used by memory migration, but there was no way of changing storage migration speed. Let's allow virDomainBlockJobSetSpeed during migration to enable the missing functionality. Signed-off-by: Jiri Denemark <jdenemar(a)redhat.com> --- src/conf/virdomainjob.h | 11 +++++++---- src/qemu/qemu_driver.c | 2 +- 2 files changed, 8 insertions(+), 5 deletions(-) diff --git a/src/conf/virdomainjob.h b/src/conf/virdomainjob.h index 8b2dccd298..d8685cf236 100644 --- a/src/conf/virdomainjob.h +++ b/src/conf/virdomainjob.h @@ -37,10 +37,13 @@ typedef enum { VIR_JOB_MODIFY, /* May change state */ VIR_JOB_ABORT, /* Abort current async job */ VIR_JOB_MIGRATION_OP, /* Operation influencing outgoing migration */ - VIR_JOB_MODIFY_MIGRATION_SAFE, /* Internal only job for event handlers which - need to be processed even during migration. - The code may only change state in a way - that does not affect migration. */ + VIR_JOB_MODIFY_MIGRATION_SAFE, /* Modify job that is safe to be run during + migration. The code may only change state + in a way that does not affect migration. + Used in event handlers which need to be + processed even during migration or for + setting block job speed when migrating + with non-shared storage. */ /* The following two items must always be the last items before JOB_LAST */ VIR_JOB_ASYNC, /* Asynchronous job */ diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index d2eddbd9ae..a1fc61bae2 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -13982,7 +13982,7 @@ qemuDomainBlockJobSetSpeed(virDomainPtr dom, if (virDomainBlockJobSetSpeedEnsureACL(dom->conn, vm->def) < 0) goto cleanup; - if (virDomainObjBeginJob(vm, VIR_JOB_MODIFY) < 0) + if (virDomainObjBeginJob(vm, VIR_JOB_MODIFY_MIGRATION_SAFE) < 0) goto cleanup; if (virDomainObjCheckActive(vm) < 0) -- 2.48.1

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[PATCH] ch: implement domainInterfaceAddresses
by Praveen K Paladugu 24 Jan '25

24 Jan '25

From: Anirudh Rayabharam <anrayabh(a)linux.microsoft.com> Implement domainInterfaceAddresses for the Cloud Hypervisor driver. Support VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE and VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP sources. Implementation is similar to other drivers. Signed-off-by: Anirudh Rayabharam <anrayabh(a)linux.microsoft.com> Signed-off-by: Praveen K Paladugu <praveenkpaladugu(a)gmail.com> --- src/ch/ch_driver.c | 42 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/src/ch/ch_driver.c b/src/ch/ch_driver.c index 6a8da5f356..d284524337 100644 --- a/src/ch/ch_driver.c +++ b/src/ch/ch_driver.c @@ -2298,6 +2298,47 @@ chConnectDomainEventDeregisterAny(virConnectPtr conn, return 0; } +static int +chDomainInterfaceAddresses(virDomain *dom, + virDomainInterfacePtr **ifaces, + unsigned int source, + unsigned int flags) +{ + virDomainObj *vm = NULL; + int ret = -1; + + virCheckFlags(0, -1); + + if (!(vm = virCHDomainObjFromDomain(dom))) + goto cleanup; + + if (virDomainInterfaceAddressesEnsureACL(dom->conn, vm->def, source) < 0) + goto cleanup; + + if (virDomainObjCheckActive(vm) < 0) + goto cleanup; + + switch (source) { + case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_LEASE: + ret = virDomainNetDHCPInterfaces(vm->def, ifaces); + break; + + case VIR_DOMAIN_INTERFACE_ADDRESSES_SRC_ARP: + ret = virDomainNetARPInterfaces(vm->def, ifaces); + break; + + default: + virReportError(VIR_ERR_ARGUMENT_UNSUPPORTED, + _("Unsupported IP address data source %1$d"), + source); + break; + } + + cleanup: + virDomainObjEndAPI(&vm); + return ret; +} + /* Function Tables */ static virHypervisorDriver chHypervisorDriver = { @@ -2316,6 +2357,7 @@ static virHypervisorDriver chHypervisorDriver = { .domainCreateXML = chDomainCreateXML, /* 7.5.0 */ .domainCreate = chDomainCreate, /* 7.5.0 */ .domainCreateWithFlags = chDomainCreateWithFlags, /* 7.5.0 */ + .domainInterfaceAddresses = chDomainInterfaceAddresses, /* 10.10.1 */ .domainShutdown = chDomainShutdown, /* 7.5.0 */ .domainShutdownFlags = chDomainShutdownFlags, /* 7.5.0 */ .domainReboot = chDomainReboot, /* 7.5.0 */ -- 2.47.0

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[PATCH v2 0/3] qemu: Add support for avail-switchover-bandwidth migration parameter
by Jiri Denemark 24 Jan '25

24 Jan '25

See documentation in 1/3 for details. Jiri Denemark (3): Add a migration parameter for available bandwidth in switchover virsh migrate: Add --available-switchover-bandwidth option qemu: Add support for avail-switchover-bandwidth migration parameter docs/manpages/virsh.rst | 12 ++++++++++++ include/libvirt/libvirt-domain.h | 18 ++++++++++++++++++ src/qemu/qemu_migration.h | 1 + src/qemu/qemu_migration_params.c | 9 +++++++++ src/qemu/qemu_migration_params.h | 1 + tools/virsh-domain.c | 13 +++++++++++++ 6 files changed, 54 insertions(+) -- 2.48.1

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[PATCH 0/3] Unify handling of directories used for loadable modules
by Andrea Bolognani 24 Jan '25

24 Jan '25

This solves the same problem as 7a8c2319acf2 but in a different, more generic fashion. Andrea Bolognani (3): meson: Unify handling of directories used for loadable modules rpm: Add missing Requires rpm: Unify handling of directories used for loadable modules libvirt.spec.in | 7 ++++--- meson.build | 5 +++++ src/locking/meson.build | 6 ++---- src/meson.build | 13 +++++++++++-- src/storage/meson.build | 2 -- src/storage_file/meson.build | 2 -- 6 files changed, 22 insertions(+), 13 deletions(-) -- 2.48.1

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[PATCH v3 0/4] conf,qemu: add AIA support for RISC-V 'virt'
by Daniel Henrique Barboza 24 Jan '25

24 Jan '25

Hi, This version has changes in patch 2 proposed by Martin. An extra patch was added to add my contact info in .mailmap, also suggested by Martin. Changes from v2: - patch 2: - use VIR_DOMAIN_AIA_DEFAULT instead of VIR_DOMAIN_AIA_NONE in virDomainFeaturesDefParse() - use VIR_DOMAIN_AIA_DEFAULT instead of VIR_TRISTATE_SWITCH_ABSENT in both checks in qemuValidateDomainDefFeatures() - patch 4 (new): - add my address info in .mailmap - v2 link: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/EAPF… Daniel Henrique Barboza (4): qemu: add capability for RISC-V AIA feature conf,qemu: implement RISC-V 'aia' virt domain feature qemu: add RISC-V 'aia' command line .mailmap: add my contact info .mailmap | 2 + docs/formatdomain.rst | 8 ++++ src/conf/domain_conf.c | 40 +++++++++++++++++++ src/conf/domain_conf.h | 12 ++++++ src/conf/schemas/domaincommon.rng | 15 +++++++ src/libvirt_private.syms | 2 + src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 5 +++ src/qemu/qemu_validate.c | 15 +++++++ .../caps_8.0.0_riscv64.xml | 1 + .../caps_9.1.0_riscv64.xml | 1 + ...cv64-virt-features-aia.riscv64-latest.args | 31 ++++++++++++++ ...scv64-virt-features-aia.riscv64-latest.xml | 1 + .../riscv64-virt-features-aia.xml | 27 +++++++++++++ tests/qemuxmlconftest.c | 2 + 16 files changed, 165 insertions(+) create mode 100644 tests/qemuxmlconfdata/riscv64-virt-features-aia.riscv64-latest.args create mode 120000 tests/qemuxmlconfdata/riscv64-virt-features-aia.riscv64-latest.xml create mode 100644 tests/qemuxmlconfdata/riscv64-virt-features-aia.xml -- 2.48.1

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[PATCH 1/1] virsysinfo: fix RISC-V detection
by Heinrich Schuchardt 23 Jan '25

23 Jan '25

The correct compiler define to detect the RISC-V architecture is __riscv. Fixes: b902cfece0db ("virsysinfo: Try reading DMI table") Signed-off-by: Heinrich Schuchardt <heinrich.schuchardt(a)canonical.com> --- src/util/virsysinfo.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/util/virsysinfo.c b/src/util/virsysinfo.c index d9b2b5e89e..b7413c3bf5 100644 --- a/src/util/virsysinfo.c +++ b/src/util/virsysinfo.c @@ -1254,7 +1254,7 @@ virSysinfoRead(void) (defined(__x86_64__) || \ defined(__i386__) || \ defined(__amd64__) || \ - defined(__riscv__) || \ + defined(__riscv) || \ defined(__mips__) || \ defined(__loongarch__)) return virSysinfoReadDMI(); -- 2.47.1

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[PATCH 0/3] qemu: Add support for avail-switchover-bandwidth migration parameter
by Jiri Denemark 23 Jan '25

23 Jan '25

See documentation in 1/3 for details. Jiri Denemark (3): Add a migration parameter for available bandwidth in switchover virsh migrate: Add --available-switchover-bandwidth option qemu: Add support for avail-switchover-bandwidth migration parameter docs/manpages/virsh.rst | 12 ++++++++++++ include/libvirt/libvirt-domain.h | 18 ++++++++++++++++++ src/qemu/qemu_migration.h | 1 + src/qemu/qemu_migration_params.c | 9 +++++++++ src/qemu/qemu_migration_params.h | 1 + tools/virsh-domain.c | 13 +++++++++++++ 6 files changed, 54 insertions(+) -- 2.48.1

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[PATCH v2 0/3] conf,qemu: add AIA support for RISC-V 'virt'
by Daniel Henrique Barboza 23 Jan '25

23 Jan '25

Hi, This new version has improvements suggested by Martin in v1. Most notably we're now doing a proper handling of 'aia=none' by adding a 'default' value that is internal only. Changes from v1: - patch 2: - changed libvirt version to 11.1.0 in 'aia' docs in formatdomain.rst - added a new internal only VIR_DOMAIN_AIA_DEFAULT value in domain_conf.h - virDomainDefFormatFeatures: skip if VIR_DOMAIN_AIA_DEFAULT instead of VIR_DOMAIN_AIA_NONE - patch 3: - skip cmd line appending if VIR_DOMAIN_AIA_DEFAULT instead of VIR_DOMAIN_AIA_NONE - changed riscv64-virt-features-aia.xml to use 'aia=none' to verify the intended behavior - v1 link: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/YUYY… Daniel Henrique Barboza (3): qemu: add capability for RISC-V AIA feature conf,qemu: implement RISC-V 'aia' virt domain feature qemu: add RISC-V 'aia' command line docs/formatdomain.rst | 8 ++++ src/conf/domain_conf.c | 40 +++++++++++++++++++ src/conf/domain_conf.h | 12 ++++++ src/conf/schemas/domaincommon.rng | 15 +++++++ src/libvirt_private.syms | 2 + src/qemu/qemu_capabilities.c | 2 + src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 5 +++ src/qemu/qemu_validate.c | 15 +++++++ .../caps_8.0.0_riscv64.xml | 1 + .../caps_9.1.0_riscv64.xml | 1 + ...cv64-virt-features-aia.riscv64-latest.args | 31 ++++++++++++++ ...scv64-virt-features-aia.riscv64-latest.xml | 1 + .../riscv64-virt-features-aia.xml | 27 +++++++++++++ tests/qemuxmlconftest.c | 2 + 15 files changed, 163 insertions(+) create mode 100644 tests/qemuxmlconfdata/riscv64-virt-features-aia.riscv64-latest.args create mode 120000 tests/qemuxmlconfdata/riscv64-virt-features-aia.riscv64-latest.xml create mode 100644 tests/qemuxmlconfdata/riscv64-virt-features-aia.xml -- 2.48.1

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