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[libvirt] [PATCH 0/3] exposing busy polling support for vhost-net
by sferdjao＠redhat.com 17 Jul '17

17 Jul '17

From: Sahid Orentino Ferdjaoui <sahid.ferdjaoui(a)redhat.com> In version 2.7.0, QEMU introduced support of busy polling for vhost-net [0]. To avoid paraphrasing original authors of that feature and the purpose it I prefer to share a pointer [1]. This patch serie exposes throught the NIC driver-specific element a new option 'poll_us'. That option is only available with the backend driver 'vhost'. The option 'poll_us' takes a positive number. 0 means that the option is not going to be exposed. [0] 69e87b32680a41d9761191443587c595b6f5fc3f [1] https://lists.gnu.org/archive/html/qemu-devel/2016-11/msg04595.html Sahid Orentino Ferdjaoui (3): qemu: add capability for vhost-net busy polling conf: introduce 'poll_us' attribute for domain interface qemu: add busy polling support docs/formatdomain.html.in | 12 ++++++++++- docs/schemas/domaincommon.rng | 5 +++++ src/conf/domain_conf.c | 16 +++++++++++++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_capabilities.c | 6 ++++++ src/qemu/qemu_capabilities.h | 1 + src/qemu/qemu_command.c | 22 +++++++++++++++++++++ src/qemu/qemu_hotplug.c | 12 +++++++++++ tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 + tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 + tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 + .../qemuxml2argv-net-virtio-netdev-pollus-fail.xml | 23 ++++++++++++++++++++++ ...xml2argv-net-virtio-netdev-pollus-qemu-fail.xml | 23 ++++++++++++++++++++++ .../qemuxml2argv-net-virtio-netdev-pollus.args | 23 ++++++++++++++++++++++ .../qemuxml2argv-net-virtio-netdev-pollus.xml | 23 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 9 +++++++++ 18 files changed, 180 insertions(+), 1 deletion(-) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus-fail.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus-qemu-fail.xml create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus.args create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-net-virtio-netdev-pollus.xml -- 2.9.4

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[libvirt] [PATCH v4 00/14] Make virNodeDeviceObj and virNodeDeviceObjList private
by John Ferlan 17 Jul '17

17 Jul '17

v3 here: https://www.redhat.com/archives/libvir-list/2017-June/msg00155.html Most patches were ACK'd in v3 (some with conditions). Changes this time around are: -> Patch1: Make the call to virNodeDeviceObjFree in dev_refresh() prior to dev_create Move the virNodeDeviceObjFree in device_removed() to after the Unlock as it avoids the need for { } else { } (besides the *ObjFree checks for !dev anyway). -> Patch2: Change as requested to remove the unnecessary obj = NULL in testDestroyVport Change as requested to goto cleanup in testStoragePoolDestroy -> Patch3: Fixed the comments to have the right variable name -> Patch4: Use "if ((obj = ...))) {" type syntax as suggested. -> Patch5-9: No change -> Patch10: Fix commit description -> Patch11: No change -> Patch 12: Fix the testNodeDeviceDestroy logic -> Patch 13-14 New patches that take the next two logical steps - objectifying the virNodeDeviceObjList and using a HashTable for access (along with all those bells and whistles). Finally remove the need for driver level locks when accessing the @devs ObjList. John Ferlan (14): nodedev: Alter virNodeDeviceObjRemove test: Adjust cleanup/error paths for nodedev test APIs nodedev: Use common naming for virnodedeviceobj nodedev: Use consistent names for driver variables nodedev: Introduce virNodeDeviceObjNew nodedev: Introduce virNodeDeviceObjListNew nodedev: Alter node device obj list function names nodedev: Dereference the obj/def in virNodeDeviceObjListFind* APIs nodedev: Introduce virNodeDeviceGetSCSIHostCaps nodedev: Introduce virNodeDeviceObjListFindSCSIHostByWWNs nodedev: Privatize _virNodeDeviceObj and _virNodeDeviceObjList nodedev: Convert virNodeDeviceObj to use virObjectLockable nodedev: Convert virNodeDeviceObjListPtr to use hash tables nodedev: Remove driver locks around object list mgmt code src/conf/node_device_conf.c | 82 +++ src/conf/node_device_conf.h | 20 +- src/conf/virnodedeviceobj.c | 846 ++++++++++++++++++++---------- src/conf/virnodedeviceobj.h | 67 +-- src/libvirt_private.syms | 20 +- src/node_device/node_device_driver.c | 201 +++---- src/node_device/node_device_hal.c | 51 +- src/node_device/node_device_linux_sysfs.c | 77 +-- src/node_device/node_device_udev.c | 63 +-- src/test/test_driver.c | 133 +++-- 10 files changed, 895 insertions(+), 665 deletions(-) -- 2.9.4

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[libvirt] [PATCH RESEND] virpcimock: Fix memory leak in pci_driver_new
by ZhiPeng Lu 17 Jul '17

17 Jul '17

@driverpath, allocated by virAsprintfQuiet, was not freed and leaked. Signed-off-by: Zhipeng Lu <lu.zhipeng(a)zte.com.cn> --- tests/virpcimock.c | 1 + 1 file changed, 1 insertion(+) diff --git a/tests/virpcimock.c b/tests/virpcimock.c index e9408aa..dec9e01 100644 --- a/tests/virpcimock.c +++ b/tests/virpcimock.c @@ -480,6 +480,7 @@ pci_driver_new(const char *name, int fail, ...) if (VIR_APPEND_ELEMENT_QUIET(pciDrivers, nPCIDrivers, driver) < 0) ABORT_OOM(); + VIR_FREE(driverpath); } static struct pciDriver * -- 1.8.3.1

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[libvirt] [PATCH] util: increase libnl buffer size to 1M
by ZhiPeng Lu 17 Jul '17

17 Jul '17

nl_recv() returns the error "No buffer space available" when using virsh destroy domain with 240 or more passhthrough network interfaces. The patch increases libnl sock receive buffer size to 1M, and nl_recv() doesn't return error when destroying domain with 512 network interfaces. Signed-off-by: ZhiPeng Lu <lu.zhipeng(a)zte.com.cn> --- src/util/virnetlink.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/src/util/virnetlink.c b/src/util/virnetlink.c index 92ecf77..bb56c54 100644 --- a/src/util/virnetlink.c +++ b/src/util/virnetlink.c @@ -189,10 +189,10 @@ virNetlinkCreateSocket(int protocol) goto error; } - if (virNetlinkSetBufferSize(nlhandle, 131702, 0) < 0) { + if (virNetlinkSetBufferSize(nlhandle, 1048576, 0) < 0) { virReportSystemError(errno, "%s", _("cannot set netlink socket buffer " - "size to 128k")); + "size to 1M")); goto error; } nl_socket_enable_msg_peek(nlhandle); -- 1.8.3.1

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[libvirt] [PATCH 00/17] nwfilter adjustments for common object
by John Ferlan 17 Jul '17

17 Jul '17

As noted in the recently posted virObject changes: https://www.redhat.com/archives/libvir-list/2017-June/msg00070.html I believe I've found a way to handle the recursive lock situation that made it "difficult" (at best) to convert the nwfilter to the common object model. It does involve a bit of a circuitous route to "temporarily implement" the refcnt in nwfilter, but that gets removed rather quickly. Beyond that there's a bit of setup, the first few patches deal with issues seen while working through this code and then more setup for getting things to be more common with other drivers (so when they disappear a bit further into the future) into some new object it'll be obvious where/why they're there. The middle few patches deal with an insane naming scheme for a single function that seemed to keep prefixing "_" as a new function was created. So it's a bit of name change, but makes it easier to think about. The last 4 patches deal with the conversion to use a @ref, a change to a list locking hash table model, the modificiation of the recursive instantiation to use @refs rather than @locks, and finally the change to use the existing lockable object. I have run these through the various avacodo nwfilter tests that I could find, but perhaps if someone that had a more "robust configuration" and wants to be a bit adventurous and also give the patches a whirl - that would be appreciated. John Ferlan (17): nwfilter: Fix return value comparison for virNWFilterTriggerVMFilterRebuild nwfilter: Fix possible corruption on failure path during LoadConfig nwfilter: Fix possible locking problem in LoadConfig error path nwfilter: Remove need for virNWFilterSaveXML nwfilter: Move virNWFilterSaveConfig virnwfilterobj nwfilter: Add configFile into virNWFilterObj nwfilter: Add @def into virNWFilterObjNew nwfilter: Clean up a couple nwfilter_driver error paths nwfilter: Consistently name virNWFilterPtr in driver nwfilter: Rename virNWFilterInstantiate nwfilter: Rename __virNWFilterInstantiateFilter nwfilter: Rename _virNWFilterInstantiateFilter nwfilter: Introduce virNWFilterObjListFindInstantiateFilter nwfilter: Add @refs logic to __virNWFilterObj nwfilter: Convert _virNWFilterObjList to be a virObjectLockable nwfilter: Remove recursive locking for nwfilter instantiation nwfilter: Convert virNWFilterObj to use virObjectLockable src/conf/nwfilter_conf.c | 43 --- src/conf/nwfilter_conf.h | 9 - src/conf/virnwfilterobj.c | 550 +++++++++++++++++++++++---------- src/conf/virnwfilterobj.h | 19 +- src/libvirt_private.syms | 6 +- src/nwfilter/nwfilter_driver.c | 51 ++- src/nwfilter/nwfilter_gentech_driver.c | 276 +++++++---------- 7 files changed, 542 insertions(+), 412 deletions(-) -- 2.9.4

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[libvirt] [PATCH] docs: formatdomain: Tweak disk discard= docs
by Cole Robinson 16 Jul '17

16 Jul '17

Change from 'controls whether to discard ... requests are ignored' to 'controls whether discard requests ... are ignored' Signed-off-by: Cole Robinson <crobinso(a)redhat.com> --- Pushed as trivial docs/formatdomain.html.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 01c6fce23..c12efcf78 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -3002,7 +3002,7 @@ </li> <li> The optional <code>discard</code> attribute controls whether - to discard (also known as "trim" or "unmap") requests are + discard requests (also known as "trim" or "unmap") are ignored or passed to the filesystem. The value can be either "unmap" (allow the discard request to be passed) or "ignore" (ignore the discard request). -- 2.13.0

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[libvirt] [PATCH v2] qemu: Default hwclock source for sPAPR to RTC
by Kothapally Madhu Pavan 15 Jul '17

15 Jul '17

QEMU fails to launch a sPAPR guest with clock sources other that RTC. Internally qemu only uses RTC timer for hwclock. This patch reports the right error message instead of qemu erroring out when any other timer other than RTC is used. Signed-off-by: Kothapally Madhu Pavan <kmp(a)linux.vnet.ibm.com> --- src/qemu/qemu_domain.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index 8e7404d..b74800d 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -3025,6 +3025,7 @@ qemuDomainDefValidate(const virDomainDef *def, virQEMUCapsPtr qemuCaps = NULL; unsigned int topologycpus; int ret = -1; + size_t i; if (!(qemuCaps = virQEMUCapsCacheLookup(caps, driver->qemuCapsCache, @@ -3037,6 +3038,18 @@ qemuDomainDefValidate(const virDomainDef *def, goto cleanup; } + /* Only RTC timer is supported as hwclock for sPAPR machines */ + for (i = 0; i < def->clock.ntimers; i++) { + virDomainTimerDefPtr timer = def->clock.timers[i]; + if (ARCH_IS_PPC64(def->os.arch) && timer->name != VIR_DOMAIN_TIMER_NAME_RTC) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, + _("unsupported clock timer '%s' for %s architecture"), + virDomainTimerNameTypeToString(def->clock.timers[i]->name), + virArchToString(def->os.arch)); + goto cleanup; + } + } + /* On x86, UEFI requires ACPI */ if (def->os.loader && def->os.loader->type == VIR_DOMAIN_LOADER_TYPE_PFLASH && -- 1.8.3.1

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[libvirt] qemu: hotplug virtio_scsi over lsilogic when sicsi controller is not present?
by Liang Yan 15 Jul '17

15 Jul '17

Hi, We hit some problems when we attached some lun devices in our vm, turns out that libvirt created lsilogic scsi controller automatically for these scsi devices, however these device works well under virtio_scsi controller. the current code logic is check lsilogic first, if qemu could not support it, then check virtio_scsi, however is it better to check virtio_scsi earlier? since it is supported better in qemu level? I am wondering which solution is better? 1. simple switch sequence and check virtio_scsi first 2. add extra option for "virsh attach-disk" to choose specific controller type Thanks, Liang ==================================== Code part is like below qemu_hotplug.c qemuDomainFindOrCreateSCSIDiskController /* No SCSI controller present, for backward compatibility we * now hotplug a controller */ if (VIR_ALLOC(cont) < 0) return NULL; cont->type = VIR_DOMAIN_CONTROLLER_TYPE_SCSI; cont->idx = controller; cont->model = -1; VIR_INFO("No SCSI controller present, hotplugging one"); if (qemuDomainAttachControllerDevice(driver, qemu_domain_address.c qemuDomainSetSCSIControllerModel if (qemuDomainIsPSeries(def)) { *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_IBMVSCSI; } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_SCSI_LSI)) { *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_LSILOGIC; } else if (virQEMUCapsGet(qemuCaps, QEMU_CAPS_VIRTIO_SCSI)) { *model = VIR_DOMAIN_CONTROLLER_MODEL_SCSI_VIRTIO_SCSI; } else { virReportError(VIR_ERR_INTERNAL_ERROR, "%s", _("Unable to determine model for scsi controller")); return -1;

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[libvirt] [PATCH 0/8] More virsecretobj changes to prepare for common object
by John Ferlan 14 Jul '17

14 Jul '17

A couple I forgot from earlier series, but a few things found since then along with some clarifications to make the ObjAdd processing a bit more like I've found for nwfilter, nodedev, and interface as well as making the ObjListRemove processing a bit clearer and more consistent. Along with the other series and the virObject v2 adjustments - this brings everything close enough to start sending the patches that will tie all this stuff together to create/use a common object model. John Ferlan (8): secret: Whitespace modification for secret_driver secret: Alter FindByUUID to expect the formatted uuidstr secret: Rename variable in virSecretObjListAdd secret: Clean up virSecretObjListAdd processing secret: Remove need for local configFile and base64File in ObjectAdd secret: Have virSecretObjNew consume newdef secret: Properly handle @def after virSecretObjAdd in driver secret: Handle object list removal and deletion properly src/conf/virsecretobj.c | 125 +++++++++++++++++++++------------------------ src/conf/virsecretobj.h | 2 +- src/secret/secret_driver.c | 50 ++++++++++++------ 3 files changed, 94 insertions(+), 83 deletions(-) -- 2.9.4

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[libvirt] [PATCH 00/10] qemu: clean up formatting of networked disk sources
by Peter Krempa 14 Jul '17

14 Jul '17

Few cleanups I made to cleanup the def->JSON generator for qemu disk sources. Peter Krempa (10): qemu: command: Set port number only for TCP transport util: Extract helper to retrieve default port for network protocol util: storage: Fill in default ports for gluster and iscsi conf: Pre-fill default ports when parsing network disk sources qemu: command: Remove default port numbers for NBD and GLUSTER qemu: command: Call qemuGetDriveSourceProps only if necessary qemu: Move qemuGetDriveSourceProps to qemu_block qemu: block: Refactor and rename qemuGetDriveSourceProps qemu: block: refactor and rename qemuBuildGlusterDriveJSONHosts qemu: block: rename and refactor qemuBuildGlusterDriveJSON po/POTFILES.in | 1 + src/conf/domain_conf.c | 3 + src/libvirt_private.syms | 1 + src/qemu/qemu_block.c | 156 ++++++++++++++ src/qemu/qemu_block.h | 3 + src/qemu/qemu_command.c | 229 ++++----------------- src/util/virstoragefile.c | 65 ++++++ src/util/virstoragefile.h | 4 + .../generic-disk-network-http.xml | 4 +- .../qemuxml2xmlout-disk-drive-network-gluster.xml | 2 +- 10 files changed, 273 insertions(+), 195 deletions(-) -- 2.12.2

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