July 2018 - Devel - libvirt List Archives

[libvirt] [PATCH RFC 0/2] util: Add VIR_ENUM_IMPL_LABEL
by Cole Robinson 27 Jul '18

27 Jul '18

This series adds VIR_ENUM_IMPL_LABEL and a demo conversion. VIR_ENUM_IMPL_LABEL allows passing in a string that briefly describes the value the enum represents, which we use to generate error messages for FromString and ToString function failures. This will allow us to drop a lot of code and unique strings that need translating. Patch 2 is an example usage, converting virDomainVirtType enum. It's not a full conversion for this particular enum, just a demo. The enum creation now looks like VIR_ENUM_IMPL_LABEL(virDomainVirt, "domain type", VIR_DOMAIN_VIRT_LAST, ... FromString failure reports this error for value 'zzzz' invalid argument: Unknown 'domain type' value 'zzzz' ToString failure reports this error for unknown type=83 internal error: Unknown 'domain type' internal value '83' Seems like a win to me but I'm interested in other opinions. This could also be a good BiteSizedTask for converting existing enums Cole Robinson (2): util: Add VIR_ENUM_IMPL_LABEL conf: Convert virDomainVirtType to VIR_ENUM_IMPL_LABEL src/conf/domain_conf.c | 10 ++-------- src/util/virutil.c | 20 ++++++++++++++++---- src/util/virutil.h | 15 ++++++++++----- 3 files changed, 28 insertions(+), 17 deletions(-) -- 2.17.1

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[libvirt] [PATCH 0/8] Work-in-progress: Incremental Backup API additions
by Eric Blake 26 Jul '18

26 Jul '18

I'm offline the rest of this week, but wanted to post the progress I've made on patches towards the Incremental Backup RFC: https://www.redhat.com/archives/libvir-list/2018-May/msg01403.html Comments welcome, including any naming suggestions Still to go: - Add .rng file for validating the XML format used in virDomainBackupBegin() - Add flags for validating XML - Add src/conf/checkpoint_conf.c mirroring src/conf/snapshot_conf.c for tracking tree of checkpoints - Add virsh wrappers for calling everything - Add qemu implementation - my first addition will probably just be for push model full backups, then additional patches to expand into pull model (on the qemu list, I still need to review and incorporate Vladimir's patches for exporting a bitmap over NBD) - Bug fixes (but why would there be any bugs in the first place? :) I've got portions of the qemu code working locally, but not polished enough to post as a patch yet; my end goal is to have a working demo against current qemu.git showing the use of virDomainBackupBegin() for incremental backups with the push model prior to the code freeze for 4.5.0 this month, even if that code doesn't get checked into libvirt until later when the qemu code is changed to drop x- prefixes. (That is, I'm hoping to demo that my API is sound, and thus we can include the entrypoints in the libvirt.so for this release, even if the libvirt code for driving pull mode over qemu waits until after a qemu release where the pieces are promoted to a stable form.) Eric Blake (8): snapshots: Avoid term 'checkpoint' for full system snapshot backup: Document nuances between different state capture APIs backup: Introduce virDomainCheckpointPtr backup: Document new XML for backups backup: Introduce virDomainCheckpoint APIs backup: Introduce virDomainBackup APIs backup: Add new domain:checkpoint access control backup: Implement backup APIs for remote driver docs/Makefile.am | 3 + docs/apibuild.py | 2 + docs/docs.html.in | 9 +- docs/domainstatecapture.html.in | 190 ++++++ docs/formatcheckpoint.html.in | 273 +++++++++ docs/formatsnapshot.html.in | 16 +- docs/schemas/domaincheckpoint.rng | 89 +++ include/libvirt/libvirt-domain-checkpoint.h | 158 +++++ include/libvirt/libvirt-domain-snapshot.h | 10 +- include/libvirt/libvirt-domain.h | 14 +- include/libvirt/libvirt.h | 3 +- include/libvirt/virterror.h | 5 +- libvirt.spec.in | 2 + mingw-libvirt.spec.in | 4 + po/POTFILES | 1 + src/Makefile.am | 2 + src/access/viraccessperm.c | 5 +- src/access/viraccessperm.h | 8 +- src/conf/snapshot_conf.c | 2 +- src/datatypes.c | 62 +- src/datatypes.h | 31 +- src/driver-hypervisor.h | 74 ++- src/libvirt-domain-checkpoint.c | 908 ++++++++++++++++++++++++++++ src/libvirt-domain-snapshot.c | 4 +- src/libvirt-domain.c | 8 +- src/libvirt_private.syms | 2 + src/libvirt_public.syms | 19 + src/qemu/qemu_driver.c | 12 +- src/remote/remote_daemon_dispatch.c | 15 + src/remote/remote_driver.c | 31 +- src/remote/remote_protocol.x | 237 +++++++- src/remote_protocol-structs | 129 ++++ src/rpc/gendispatch.pl | 32 +- src/util/virerror.c | 15 +- tests/domaincheckpointxml2xmlin/empty.xml | 1 + tests/domaincheckpointxml2xmlout/empty.xml | 10 + tests/virschematest.c | 2 + tools/virsh-domain.c | 3 +- tools/virsh-snapshot.c | 2 +- tools/virsh.pod | 14 +- 40 files changed, 2347 insertions(+), 60 deletions(-) create mode 100644 docs/domainstatecapture.html.in create mode 100644 docs/formatcheckpoint.html.in create mode 100644 docs/schemas/domaincheckpoint.rng create mode 100644 include/libvirt/libvirt-domain-checkpoint.h create mode 100644 src/libvirt-domain-checkpoint.c create mode 100644 tests/domaincheckpointxml2xmlin/empty.xml create mode 100644 tests/domaincheckpointxml2xmlout/empty.xml -- 2.14.4

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[libvirt] [PATCH v2 0/1] conf: Add validation of input devices
by Han Han 26 Jul '18

26 Jul '18

v1: https://www.redhat.com/archives/libvir-list/2018-July/msg00658.html Han Han (1): conf: Add validation of input devices src/conf/domain_conf.c | 22 +++++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) -- 2.18.0

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[libvirt] [PATCH] conf: fix virtType FromString check
by Cole Robinson 26 Jul '18

26 Jul '18

In the domain definition, virtType is virDomainVirtType which is unsigned, so comparing against -1 doesn't work. Cast to int first Fixes 8e2982b5767 Signed-off-by: Cole Robinson <crobinso(a)redhat.com> --- This regressed in the past as well, when virtType was changed to virDomainVirtType in 7383b8cc068, fixed by the follow up 5e06a4f063. It's strange that virDomainVirtType is unsigned but VirtTypeFromString can return -1... it should probably either work like virArch, or we should switch virDomainVirtType to int in the DomainDef, but that requires fixing a few other places too src/conf/domain_conf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index c27c874d9e..30806d1e59 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -19140,7 +19140,7 @@ virDomainDefParseCaps(virDomainDefPtr def, "%s", _("missing domain type attribute")); goto cleanup; } - if ((def->virtType = virDomainVirtTypeFromString(virttype)) < 0) { + if ((int)(def->virtType = virDomainVirtTypeFromString(virttype)) < 0) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, _("invalid domain type %s"), virttype); goto cleanup; -- 2.17.1

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[libvirt] [PATCH] conf: don't use virDomainVirtType in struct field
by Daniel P. Berrangé 26 Jul '18

26 Jul '18

Use of enum types for struct fields is generally avoided since it causes warnings if the compiler assumes the enum is unsigned. For example commit 8e2982b5767a25e5da6533c65bfdc648c95b3c69 Author: Cole Robinson <crobinso(a)redhat.com> Date: Tue Jul 24 16:27:54 2018 -0400 conf: Clean up virDomainDefParseCaps Introduced a line: if ((def->virtType = virDomainVirtTypeFromString(virttype)) < 0) { which causes a build failure with CLang conf/domain_conf.c:19143:65: error: comparison of unsigned enum expression < 0 is always false [-Werror,-Wtautological-compare] as the compiler is free to optimize away the "< 0" check due to the assumption that the enum type is unsigned and always in range. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- src/conf/domain_conf.c | 2 +- src/conf/domain_conf.h | 2 +- src/qemu/qemu_command.c | 2 +- src/qemu/qemu_process.c | 4 +++- 4 files changed, 6 insertions(+), 4 deletions(-) Pushing as a build fix for CLang diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index c27c874d9e..f94a90fbcc 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -15075,7 +15075,7 @@ virDomainVideoDefaultRAM(const virDomainDef *def, int virDomainVideoDefaultType(const virDomainDef *def) { - switch (def->virtType) { + switch ((virDomainVirtType)def->virtType) { case VIR_DOMAIN_VIRT_TEST: case VIR_DOMAIN_VIRT_XEN: if (def->os.type == VIR_DOMAIN_OSTYPE_XEN || diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index a804e86f6c..c1dfa37fdf 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -2386,7 +2386,7 @@ struct _virDomainVirtioOptions { typedef struct _virDomainDef virDomainDef; typedef virDomainDef *virDomainDefPtr; struct _virDomainDef { - virDomainVirtType virtType; + int virtType; /* enum virDomainVirtType */ int id; unsigned char uuid[VIR_UUID_BUFLEN]; diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index ae45c45b7f..d148db90fa 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -7163,7 +7163,7 @@ qemuBuildMachineCommandLine(virCommandPtr cmd, virCommandAddArg(cmd, "-machine"); virBufferAdd(&buf, def->os.machine, -1); - switch (def->virtType) { + switch ((virDomainVirtType)def->virtType) { case VIR_DOMAIN_VIRT_QEMU: virBufferAddLit(&buf, ",accel=tcg"); break; diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 27bd8b9465..c4e33723d1 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -7191,6 +7191,7 @@ int qemuProcessAttach(virConnectPtr conn ATTRIBUTE_UNUSED, virQEMUDriverConfigPtr cfg = virQEMUDriverGetConfig(driver); virCapsPtr caps = NULL; bool active = false; + virDomainVirtType virtType; VIR_DEBUG("Beginning VM attach process"); @@ -7342,8 +7343,9 @@ int qemuProcessAttach(virConnectPtr conn ATTRIBUTE_UNUSED, goto exit_monitor; if (qemuMonitorGetStatus(priv->mon, &running, &reason) < 0) goto exit_monitor; - if (qemuMonitorGetVirtType(priv->mon, &vm->def->virtType) < 0) + if (qemuMonitorGetVirtType(priv->mon, &virtType) < 0) goto exit_monitor; + vm->def->virtType = virtType; if (qemuDomainObjExitMonitor(driver, vm) < 0) goto error; -- 2.17.1

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[libvirt] [PATCH] qemu_monitor: Fix regression in getting disk capacity
by Michal Privoznik 26 Jul '18

26 Jul '18

In dbf990fd31e8 the qemuMonitorJSONBlockStatsUpdateCapacityOne() was split. However, due to a bug the return value was never set to something meaningful. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- src/qemu/qemu_monitor_json.c | 15 ++++++++------- 1 file changed, 8 insertions(+), 7 deletions(-) diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 75d0738b5d..9acf62e0bb 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -2492,14 +2492,15 @@ qemuMonitorJSONBlockStatsUpdateCapacityOne(virJSONValuePtr image, goto cleanup; if (backingChain && - (backing = virJSONValueObjectGetObject(image, "backing-image"))) { - ret = qemuMonitorJSONBlockStatsUpdateCapacityOne(backing, - dev_name, - depth + 1, - stats, - true); - } + (backing = virJSONValueObjectGetObject(image, "backing-image")) && + qemuMonitorJSONBlockStatsUpdateCapacityOne(backing, + dev_name, + depth + 1, + stats, + true) < 0) + goto cleanup; + ret = 0; cleanup: VIR_FREE(entry_name); return ret; -- 2.16.4

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[libvirt] [PATCH] conf: Fix typo in error msg of virDomainVideoDefValidate
by Han Han 26 Jul '18

26 Jul '18

https://bugzilla.redhat.com/show_bug.cgi?id=1607825 Fix typo of error msg when 'none' type is not the only video device defined in VM. Signed-off-by: Han Han <hhan(a)redhat.com> --- src/conf/domain_conf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 33b0b4ab68..c2ccbcca91 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -5687,7 +5687,7 @@ virDomainVideoDefValidate(const virDomainVideoDef *video, if (def->videos[i]->type == VIR_DOMAIN_VIDEO_TYPE_NONE && def->nvideos > 1) { virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", - _("a '%s' video type must be the only video device " + _("a 'none' video type must be the only video device " "defined for the domain")); return -1; } -- 2.18.0

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[libvirt] [PATCH 0/7] conf: Replace SKIP_OSTYPE with SKIP_VALIDATE
by Cole Robinson 26 Jul '18

26 Jul '18

The SKIP_OSTYPE domain parse flag is largely redundant nowadays since we have SKIP_VALIDATE. This series smoothes out some of the SKIP_OSTYPE weirdness so we can drop it Cole Robinson (7): conf: Break out virDomainDefParseCaps conf: Clean up virDomainDefParseCaps tests: qemuhotplug: Fix segfault when XML loading fails conf: Drop unneccessary caps parsing logic conf: Sync caps data even when SKIP_OSTYPE_CHECKS tests: Remove redundant lxc test conf: Replace SKIP_OSTYPE_CHECKS with SKIP_VALIDATE src/conf/domain_conf.c | 175 +++++++++++---------- src/conf/domain_conf.h | 13 +- src/conf/snapshot_conf.c | 2 - src/conf/virdomainobjlist.c | 2 - tests/lxcxml2xmltest.c | 2 - tests/qemuhotplugtest.c | 2 + tests/qemuxml2argvdata/missing-machine.xml | 2 +- tests/qemuxml2argvtest.c | 5 +- tests/qemuxml2xmltest.c | 1 - tests/testutils.c | 13 +- tests/testutilsqemu.c | 18 +++ tests/vircapstest.c | 2 - 12 files changed, 132 insertions(+), 105 deletions(-) -- 2.17.1

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[libvirt] [dbus PATCH v2 0/2] Make correct use of setup fixtures & cleanup
by Katerina Koukiou 26 Jul '18

26 Jul '18

diff from v1: * fixtures patch merged * fixed reminder flake8 issues * added patch introducing syntax-check target in the Makefile Katerina Koukiou (2): tests: fix all coding style issues to comply with flake8 Add syntax-check target in Makefile.am HACKING.md | 9 ++++++++- Makefile.am | 6 ++++++ tests/libvirttest.py | 9 +++++---- tests/test_connect.py | 2 +- tests/test_domain.py | 5 +++-- tests/test_interface.py | 12 +++++++----- tests/test_network.py | 8 ++++---- tests/test_storage.py | 1 + 8 files changed, 35 insertions(+), 17 deletions(-) -- 2.17.1

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[libvirt] [dbus PATCH 0/2] Make correct use of setup fixtures & cleanup
by Katerina Koukiou 26 Jul '18

26 Jul '18

Katerina Koukiou (2): tests: {interface, node_device}_create should be used as setup fixtures tests: fix all coding style issues to comply with pep8 tests/libvirttest.py | 1 + tests/test_connect.py | 9 +++++---- tests/test_domain.py | 5 +++-- tests/test_interface.py | 23 +++++++++++++---------- tests/test_network.py | 8 ++++---- tests/test_nodedev.py | 16 ++++++++-------- tests/test_storage.py | 1 + 7 files changed, 35 insertions(+), 28 deletions(-) -- 2.17.1

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