March 2025 - Devel - libvirt List Archives

[PATCH 0/4] ch: timeout fix (GitLab issue #743)
by Kirill Shchetiniuk 31 Mar '25

31 Mar '25

This patch series is supposed to fix the following reported issue on GitLab: virtchd times out even with an active guest running https://gitlab.com/libvirt/libvirt/-/issues/743 During further investigation, we found that there are in fact two bugs: 1. The CH driver does not store any domains' XMLs onto disk, and as a result it does not have any information about running domains when it restarts. Previously, the CH driver did not save any XMLs onto the disk, neither transient nor persistent definitions. To address this issue, add transient domain XML saving when a new domain is defined, as well as saving transient domain XML when a domain starts, to enable reconnecting to running domains when the driver restarts. Now all persistent and transient definitions are stored onto the disk. Also add running domain reconnection helper functions to restore the connection between the driver and running VMM when the driver restarts, to be able to continue work with running domains. 2. Timeout should not be active while a client is connected or there is a running domain. The second bug led to a situation where the CH driver timed out (e.g., --timeout 60) even when some domains were still running. Previously, only an active virsh session prevented the driver from timing out. To address this issue, an inhibitor for the CH driver has been added to prevent the timeout. The inhibitor now stores the count of running domains and prevents the timeout if the count is above zero. NOTE: This series patch series is depend on followin patch series: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/thread/O3SK… Kirill Shchetiniuk (4): ch: add persistent definition save and load ch: add transient definition save and load ch: add reconnection to running domains ch: fix timeout while domain is still running src/ch/ch_conf.c | 10 ++- src/ch/ch_conf.h | 6 ++ src/ch/ch_domain.c | 15 +++++ src/ch/ch_domain.h | 3 + src/ch/ch_driver.c | 49 ++++++++++++++- src/ch/ch_monitor.c | 65 ++++++++++++++++++++ src/ch/ch_monitor.h | 2 + src/ch/ch_process.c | 147 ++++++++++++++++++++++++++++++++++++++++++++ src/ch/ch_process.h | 2 + 9 files changed, 293 insertions(+), 6 deletions(-) -- 2.48.1

1 4

[PATCH v2 0/5] apparmor: assume at least version 3
by Daniel P. Berrangé 31 Mar '25

31 Mar '25

In v2: - Do upfront check for apparmor >= 3.0.0 - Add further revert commit Daniel P. Berrangé (5): meson: mandate apparmor >= 3.0.0 apparmor: assume at least apparmor >= 3 Revert "apparmor: Allow version-specific bits in abstractions too" Revert "apparmor: Allow version-specific bits in profiles" meson: drop remaining checks for apparmor version meson.build | 7 +- .../apparmor/{libvirt-lxc.in => libvirt-lxc} | 2 - .../{libvirt-qemu.in => libvirt-qemu} | 4 -- src/security/apparmor/meson.build | 64 ++----------------- .../usr.lib.libvirt.virt-aa-helper.in | 5 -- src/security/apparmor/usr.sbin.libvirtd.in | 2 - src/security/apparmor/usr.sbin.virtqemud.in | 2 - src/security/apparmor/usr.sbin.virtxend.in | 2 - src/security/virt-aa-helper.c | 9 +-- 9 files changed, 10 insertions(+), 87 deletions(-) rename src/security/apparmor/{libvirt-lxc.in => libvirt-lxc} (99%) rename src/security/apparmor/{libvirt-qemu.in => libvirt-qemu} (99%) -- 2.48.1

2 6

[PATCH 0/3] apparmor: assume at least version 3
by Daniel P. Berrangé 31 Mar '25

31 Mar '25

Daniel P. Berrangé (3): apparmor: assume at least apparmor >= 3 Revert "apparmor: Allow version-specific bits in profiles" meson: drop remaining checks for apparmor version meson.build | 3 -- src/security/apparmor/libvirt-lxc.in | 2 - src/security/apparmor/libvirt-qemu.in | 4 -- src/security/apparmor/meson.build | 45 +------------------ .../usr.lib.libvirt.virt-aa-helper.in | 5 --- src/security/apparmor/usr.sbin.libvirtd.in | 2 - src/security/apparmor/usr.sbin.virtqemud.in | 2 - src/security/apparmor/usr.sbin.virtxend.in | 2 - src/security/virt-aa-helper.c | 9 +--- 9 files changed, 3 insertions(+), 71 deletions(-) -- 2.48.1

2 6

[PATCH v2 0/1] NEWS: qemu: Support for Block Disk Along with Throttle Filters
by Harikumar Rajkumar 31 Mar '25

31 Mar '25

NEWS: qemu: Support for Block Disk Along with Throttle Filters Harikumar Rajkumar (1): NEWS: qemu: support block disk along with throttle filters NEWS.rst | 8 ++++++++ 1 file changed, 8 insertions(+) -- 2.48.1

2 4

[PATCH] virDomainDiskDefValidateSourceChainOne: Fix validation of 'data-file' nesting
by Peter Krempa 28 Mar '25

28 Mar '25

From: Peter Krempa <pkrempa(a)redhat.com> As the 'dataStore' is internally represented as a virStorageSource object it has provisions for nesting which is not supported. When I've reviewed and modified the commit adding data file parsing support I've added code that was supposed to reject any 'backingStore' and 'dataStore' structures nested in a source of a 'dataStore'. Unfortunately the check was broken as one of the terms checked the presence of parent's 'backingStore' instead of the nesting. Fix it and add tests. Fixes: b3171cf8da3 Resolves: https://issues.redhat.com/browse/RHEL-85320 Signed-off-by: Peter Krempa <pkrempa(a)redhat.com> --- src/conf/domain_validate.c | 2 +- ...sk-qcow2-datafile-store.x86_64-latest.args | 43 +++++++++++-------- ...isk-qcow2-datafile-store.x86_64-latest.xml | 22 +++++++++- .../disk-qcow2-datafile-store.xml | 19 ++++++++ 4 files changed, 66 insertions(+), 20 deletions(-) diff --git a/src/conf/domain_validate.c b/src/conf/domain_validate.c index 396d1e400a..d0d4bc0bf4 100644 --- a/src/conf/domain_validate.c +++ b/src/conf/domain_validate.c @@ -562,7 +562,7 @@ virDomainDiskDefValidateSourceChainOne(const virStorageSource *src) return -1; } - if (src->dataFileStore->dataFileStore || src->backingStore) { + if (src->dataFileStore->dataFileStore || src->dataFileStore->backingStore) { virReportError(VIR_ERR_XML_ERROR, "%s", _("The <source> of <dataStore> can't have another nested <dataStore> or <backingStore> element")); return -1; diff --git a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.args b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.args index 5a64246af6..74f2d1a090 100644 --- a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.args +++ b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.args @@ -27,25 +27,32 @@ XDG_CONFIG_HOME=/var/lib/libvirt/qemu/domain--1-QEMUGuest1/.config \ -no-shutdown \ -boot strict=on \ -device '{"driver":"piix3-usb-uhci","id":"usb","bus":"pci.0","addr":"0x1.0x2"}' \ --blockdev '{"driver":"file","filename":"/tmp/data-file-store","node-name":"libvirt-9-storage","read-only":false}' \ --blockdev '{"driver":"nbd","server":{"type":"unix","path":"/path/to/sock"},"export":"Volume2/Image","node-name":"libvirt-8-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"driver":"file","filename":"/tmp/data-file-store","node-name":"libvirt-13-storage","read-only":false}' \ +-blockdev '{"driver":"nbd","server":{"type":"unix","path":"/path/to/sock"},"export":"Volume2/Image","node-name":"libvirt-12-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-12-format","read-only":false,"driver":"qcow2","data-file":"libvirt-13-storage","file":"libvirt-12-storage"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x2","drive":"libvirt-12-format","id":"virtio-disk0","bootindex":1}' \ +-blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-11-storage","read-only":false}' \ +-blockdev '{"driver":"nbd","server":{"type":"unix","path":"/var/run/nbdsock"},"export":"bar","node-name":"libvirt-10-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-10-format","read-only":false,"driver":"qcow2","data-file":"libvirt-11-storage","file":"libvirt-10-storage"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x3","drive":"libvirt-10-format","id":"virtio-disk1"}' \ +-blockdev '{"driver":"nbd","server":{"type":"unix","path":"/path/to/sock/datafile"},"export":"Volume2/ImageDataFile","node-name":"libvirt-9-storage","read-only":false}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071879","node-name":"libvirt-8-storage","auto-read-only":true,"discard":"unmap"}' \ -blockdev '{"node-name":"libvirt-8-format","read-only":false,"driver":"qcow2","data-file":"libvirt-9-storage","file":"libvirt-8-storage"}' \ --device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x2","drive":"libvirt-8-format","id":"virtio-disk0","bootindex":1}' \ --blockdev '{"driver":"host_device","filename":"/dev/HostVG/QEMUGuest1","node-name":"libvirt-7-storage","read-only":false}' \ --blockdev '{"driver":"nbd","server":{"type":"unix","path":"/var/run/nbdsock"},"export":"bar","node-name":"libvirt-6-storage","auto-read-only":true,"discard":"unmap"}' \ --blockdev '{"node-name":"libvirt-6-format","read-only":false,"driver":"qcow2","data-file":"libvirt-7-storage","file":"libvirt-6-storage"}' \ --device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x3","drive":"libvirt-6-format","id":"virtio-disk1"}' \ --blockdev '{"driver":"nbd","server":{"type":"unix","path":"/path/to/sock/datafile"},"export":"Volume2/ImageDataFile","node-name":"libvirt-5-storage","read-only":false}' \ --blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071879","node-name":"libvirt-4-storage","auto-read-only":true,"discard":"unmap"}' \ --blockdev '{"node-name":"libvirt-4-format","read-only":false,"driver":"qcow2","data-file":"libvirt-5-storage","file":"libvirt-4-storage"}' \ --device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x4","drive":"libvirt-4-format","id":"virtio-disk2"}' \ --blockdev '{"driver":"file","filename":"/tmp/data-file-store-2","node-name":"libvirt-3-storage","read-only":true}' \ --blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071877","node-name":"libvirt-2-storage","auto-read-only":true,"discard":"unmap"}' \ --blockdev '{"node-name":"libvirt-2-format","read-only":true,"driver":"qcow2","data-file":"libvirt-3-storage","file":"libvirt-2-storage"}' \ --blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071880","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap"}' \ --blockdev '{"node-name":"libvirt-1-format","read-only":false,"driver":"qcow2","file":"libvirt-1-storage","backing":"libvirt-2-format"}' \ --device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x5","drive":"libvirt-1-format","id":"virtio-disk3"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x4","drive":"libvirt-8-format","id":"virtio-disk2"}' \ +-blockdev '{"driver":"file","filename":"/tmp/data-file-store-2","node-name":"libvirt-7-storage","read-only":true}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071877","node-name":"libvirt-6-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-6-format","read-only":true,"driver":"qcow2","data-file":"libvirt-7-storage","file":"libvirt-6-storage"}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/rhel7.1484071880","node-name":"libvirt-5-storage","auto-read-only":true,"discard":"unmap"}' \ +-blockdev '{"node-name":"libvirt-5-format","read-only":false,"driver":"qcow2","file":"libvirt-5-storage","backing":"libvirt-6-format"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x5","drive":"libvirt-5-format","id":"virtio-disk3"}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/datastore_1","aio":"native","node-name":"libvirt-4-storage","read-only":true,"discard":"unmap","cache":{"direct":true,"no-flush":false}}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/base-with-data-file.qcow","aio":"native","node-name":"libvirt-3-storage","auto-read-only":true,"discard":"unmap","cache":{"direct":true,"no-flush":false}}' \ +-blockdev '{"node-name":"libvirt-3-format","read-only":true,"discard":"unmap","cache":{"direct":true,"no-flush":false},"driver":"qcow2","data-file":"libvirt-4-storage","file":"libvirt-3-storage"}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/datastore_2","aio":"native","node-name":"libvirt-2-storage","read-only":false,"discard":"unmap","cache":{"direct":true,"no-flush":false}}' \ +-blockdev '{"driver":"file","filename":"/var/lib/libvirt/images/datastore.qcow2","aio":"native","node-name":"libvirt-1-storage","auto-read-only":true,"discard":"unmap","cache":{"direct":true,"no-flush":false}}' \ +-blockdev '{"node-name":"libvirt-1-format","read-only":false,"discard":"unmap","cache":{"direct":true,"no-flush":false},"driver":"qcow2","data-file":"libvirt-2-storage","file":"libvirt-1-storage","backing":"libvirt-3-format"}' \ +-device '{"driver":"virtio-blk-pci","bus":"pci.0","addr":"0x6","drive":"libvirt-1-format","id":"virtio-disk4","write-cache":"on"}' \ -audiodev '{"id":"audio1","driver":"none"}' \ --device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x6"}' \ +-device '{"driver":"virtio-balloon-pci","id":"balloon0","bus":"pci.0","addr":"0x7"}' \ -sandbox on,obsolete=deny,elevateprivileges=deny,spawn=deny,resourcecontrol=deny \ -msg timestamp=on diff --git a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.xml b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.xml index a026749faf..a4bfcb29e0 100644 --- a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.xml +++ b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.x86_64-latest.xml @@ -69,6 +69,26 @@ <target dev='vdd' bus='virtio'/> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </disk> + <disk type='file' device='disk'> + <driver name='qemu' type='qcow2' cache='none' io='native' discard='unmap'/> + <source file='/var/lib/libvirt/images/datastore.qcow2'> + <dataStore type='file'> + <format type='raw'/> + <source file='/var/lib/libvirt/images/datastore_2'/> + </dataStore> + </source> + <backingStore type='file'> + <format type='qcow2'/> + <source file='/var/lib/libvirt/images/base-with-data-file.qcow'> + <dataStore type='file'> + <format type='raw'/> + <source file='/var/lib/libvirt/images/datastore_1'/> + </dataStore> + </source> + </backingStore> + <target dev='vde' bus='virtio'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + </disk> <controller type='usb' index='0' model='piix3-uhci'> <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/> </controller> @@ -77,7 +97,7 @@ <input type='keyboard' bus='ps2'/> <audio id='1' type='none'/> <memballoon model='virtio'> - <address type='pci' domain='0x0000' bus='0x00' slot='0x06' function='0x0'/> + <address type='pci' domain='0x0000' bus='0x00' slot='0x07' function='0x0'/> </memballoon> </devices> </domain> diff --git a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.xml b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.xml index dff5f15158..9f2671a3e7 100644 --- a/tests/qemuxmlconfdata/disk-qcow2-datafile-store.xml +++ b/tests/qemuxmlconfdata/disk-qcow2-datafile-store.xml @@ -62,6 +62,25 @@ </backingStore> <target dev='vdd' bus='virtio'/> </disk> + <disk type='file' device='disk'> + <driver name='qemu' type='qcow2' cache='none' io='native' discard='unmap'/> + <source file='/var/lib/libvirt/images/datastore.qcow2'> + <dataStore type='file'> + <format type='raw'/> + <source file='/var/lib/libvirt/images/datastore_2'/> + </dataStore> + </source> + <backingStore type='file'> + <format type='qcow2'/> + <source file='/var/lib/libvirt/images/base-with-data-file.qcow'> + <dataStore type='file'> + <format type='raw'/> + <source file='/var/lib/libvirt/images/datastore_1'/> + </dataStore> + </source> + </backingStore> + <target dev='vde' bus='virtio'/> + </disk> <controller type='usb' index='0'/> <controller type='pci' index='0' model='pci-root'/> <memballoon model='virtio'/> -- 2.49.0

2 1

Plans for 11.2.0 release (freeze on Tuesday 25 Mar)
by Jiri Denemark 28 Mar '25

28 Mar '25

We are getting close to 11.2.0 release of libvirt. To aim for the release on Tuesday 01 Apr I suggest entering the freeze on Tuesday 25 Mar and tagging RC2 on Friday 28 Mar. I hope this works for everyone. Jirka

1 1

[PATCH] NEWS: Document features/improvements/bug fixes I've participated in
by Michal Privoznik 28 Mar '25

28 Mar '25

From: Michal Privoznik <mprivozn(a)redhat.com> There are some features/improvements/bug fixes I've either contributed or reviewed/merged. Document them for upcoming release. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- NEWS.rst | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 18d45656b8..cd5ec4eab2 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -75,6 +75,18 @@ v11.2.0 (unreleased) system are printed. A user may specify ``--all`` to also print models which are not supported on the host. + * qemu: Introduce os/shim element + + For secure boot environments where ``<loader/>`` is signed, it may be + unfeasible to keep the binary up to date (esp. when revoking certificates + contained within). To address that, new ``<shim/>`` element is introduced + which allows hypervisor to side load another UEFI binary, which can then + contain new certification authorities and/or list of revocations. + + * ch: Enable SEV SNP support + + Cloud Hypervisor guests can be now started with SEV SNP enabled. + * **Improvements** * qemu: Improved guest agent corner case error reporting @@ -87,6 +99,14 @@ v11.2.0 (unreleased) The new error codes are ``VIR_ERR_AGENT_COMMAND_TIMEOUT`` and ``VIR_ERR_AGENT_COMMAND_FAILED``. + * qemu: Reflect MAC address change in live domain XML + + When a guest changes MAC address on one of its vNICs the new MAC address is + now visible in the live XML under ``currentAddress`` attribute of + ``<mac/>`` element. At the same time, + ``VIR_DOMAIN_EVENT_ID_NIC_MAC_CHANGE`` event is emitted so that management + applications can update their internal state. + * **Bug fixes** * qemu: attach virtio-mem with CCW address @@ -95,6 +115,11 @@ v11.2.0 (unreleased) default type CCW address assigned. A specified CCW address is now used for the virtio-mem device instead of getting overwritten by a PCI address. + * ch: Various memory leak fixes + + There were some memory leaks identified in the Cloud Hypervisor driver. + They are fixed now. + v11.1.0 (2025-03-03) ==================== -- 2.48.1

2 1

[PATCH] esxConnectListAllDomains: Don't propagate failure to lookup a single domain
by Peter Krempa 26 Mar '25

26 Mar '25

From: Peter Krempa <pkrempa(a)redhat.com> In esxConnectListAllDomains if the lookup of the VM name and UUID fails for a single VM (possible e.g. with broken storage) the whole API would return failure even when there are working VMs. Rework the lookup so that if a subset fails we ignore the failure on those. We report an error only if lookup of all of the objects failed. Failure is reported from the last one. Resolves: https://issues.redhat.com/browse/RHEL-80606 Signed-off-by: Peter Krempa <pkrempa(a)redhat.com> --- src/esx/esx_driver.c | 23 +++++++++++++---------- 1 file changed, 13 insertions(+), 10 deletions(-) diff --git a/src/esx/esx_driver.c b/src/esx/esx_driver.c index 554fb3e18f..d869481698 100644 --- a/src/esx/esx_driver.c +++ b/src/esx/esx_driver.c @@ -4792,18 +4792,21 @@ esxConnectListAllDomains(virConnectPtr conn, virtualMachine = virtualMachine->_next) { g_autofree char *name = NULL; - if (needIdentity) { - if (esxVI_GetVirtualMachineIdentity(virtualMachine, &id, - &name, uuid) < 0) { + /* If the lookup of the required properties fails for some of the machines + * in the list it's preferrable to return the valid objects instead of + * failing outright */ + if ((needIdentity && esxVI_GetVirtualMachineIdentity(virtualMachine, &id, &name, uuid) < 0) || + (needPowerState && esxVI_GetVirtualMachinePowerState(virtualMachine, &powerState) < 0)) { + + /* Raise error from last lookup if we didn't successfuly fetch any + * domain objecst yet */ + if (count == 0 && !virtualMachine->_next) goto cleanup; - } - } - if (needPowerState) { - if (esxVI_GetVirtualMachinePowerState(virtualMachine, - &powerState) < 0) { - goto cleanup; - } + /* failure to fetch information of a single VM must not interrupt + * the lookup of the rest */ + virResetLastError(); + continue; } /* filter by active state */ -- 2.49.0

2 3

[PATCH] NEWS: Mention bump to qemu-6.2, vhost-user shmem check and stats params discoverabilty
by Peter Krempa 26 Mar '25

26 Mar '25

From: Peter Krempa <pkrempa(a)redhat.com> Signed-off-by: Peter Krempa <pkrempa(a)redhat.com> --- NEWS.rst | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/NEWS.rst b/NEWS.rst index 18d45656b8..2855ec77e4 100644 --- a/NEWS.rst +++ b/NEWS.rst @@ -15,6 +15,11 @@ v11.2.0 (unreleased) * **Removed features** + * Remove support for qemu-6.1 and older + + Libvirt now requires *qemu-6.2* or newer based on our platform support + policy. + * **New features** * qemu: Add new 'image_format' parameter to virDomainSaveParams @@ -87,6 +92,21 @@ v11.2.0 (unreleased) The new error codes are ``VIR_ERR_AGENT_COMMAND_TIMEOUT`` and ``VIR_ERR_AGENT_COMMAND_FAILED``. + * qemu: Use common check for shared memory use for ``vhost-user`` network devices + + Historically libvirt printed only a warning if the ``vhost-user`` network + was misconfigured. Since we enforce proper configuration for other device + types using ``vhost-user`` it is now enforced also for network devices and + prints an actual error on misconfiguration. + + + * Introduce constants for discoverability of entries in bulk stats APIs + + Libvirt introduced constants exposed by our API description XML which allows + discoverability of new entries in typed parameter names returned by + ``virConnectGetAllDomainStats``, ``virDomainListGetStats``, and + ``virDomainGetGuestInfo``. + * **Bug fixes** * qemu: attach virtio-mem with CCW address -- 2.49.0

2 1

[PATCH V4 00/18] qemu: support mapped-ram+directio+mulitfd
by Jim Fehlig 25 Mar '25

25 Mar '25

V4 series adding support for QEMU's mapped-ram stream format [1] and migration capability. The use of mapped-ram is controlled by extending save_image_format setting in qemu.conf with a new 'sparse' option. The 'raw' format continues to be the default. Also included are patches that leverage mapped-ram to add support for parallel save/restore. Changes in V4: * Rebased on latest master, including the series "qemu: Support specifying save image format" V1: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/MNB… V2: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/GNJ… V3: https://lists.libvirt.org/archives/list/devel@lists.libvirt.org/message/SK2… [1] https://gitlab.com/qemu-project/qemu/-/blob/master/docs/devel/migration/map… 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 (15): lib: virDomain{Save,Restore}Params: Ensure absolute path qemu: Add function to get FDPass object from monitor 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: Add support for mapped-ram on save 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 | 92 +++++++++++--- src/qemu/qemu.conf.in | 9 +- src/qemu/qemu_driver.c | 78 +++++++++--- src/qemu/qemu_fd.c | 46 +++++++ src/qemu/qemu_fd.h | 4 + src/qemu/qemu_migration.c | 204 ++++++++++++++++++++++--------- 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 | 37 ++++++ src/qemu/qemu_monitor.h | 5 + src/qemu/qemu_process.c | 100 ++++++++++----- src/qemu/qemu_process.h | 19 ++- src/qemu/qemu_saveimage.c | 120 ++++++++++++------ src/qemu/qemu_saveimage.h | 4 + src/qemu/qemu_snapshot.c | 15 ++- tools/virsh-domain.c | 81 ++++++++++-- 19 files changed, 775 insertions(+), 190 deletions(-) -- 2.43.0

3 45