August 2019 - Devel - libvirt List Archives

[libvirt] [PATCH v2 0/5] test_driver: implement IOThread related APIs
by Ilias Stamatis 12 Aug '19

12 Aug '19

Changes since v1: - Use vm-private data for storing iothread parameters and implement virDomainSetIOThreadParams Ilias Stamatis (5): test_driver: implement virDomainAddIOThread test_driver: implement virDomainDelIOThread test_driver: implement virDomainPinIOThread test_driver: implement virDomainGetIOThreadInfo test_driver: implement virDomainSetIOThreadParams src/test/test_driver.c | 362 +++++++++++++++++++++++++++++++++++++++++ src/test/test_driver.h | 11 ++ 2 files changed, 373 insertions(+) -- 2.22.0

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[libvirt] [PATCH v2 0/2] add support for kvm-hint-dedicated performance hint
by Menno Lageman 12 Aug '19

12 Aug '19

v2 of: https://www.redhat.com/archives/libvir-list/2019-August/msg00363.html diff to v1: - reword description in documentation - move check for valid domain config to qemuDomainDefValidate Wim ten Have (2): qemu: support for kvm-hint-dedicated performance hint tests: add tests for kvm-hint-dedicated feature docs/formatdomain.html.in | 7 +++++++ docs/schemas/domaincommon.rng | 5 +++++ src/conf/domain_conf.c | 4 ++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 5 +++++ src/qemu/qemu_domain.c | 11 ++++++++++- tests/qemuxml2argvdata/kvm-features-off.xml | 1 + tests/qemuxml2argvdata/kvm-features.args | 4 ++-- tests/qemuxml2argvdata/kvm-features.xml | 4 +++- tests/qemuxml2xmloutdata/kvm-features-off.xml | 1 + tests/qemuxml2xmloutdata/kvm-features.xml | 4 +++- 11 files changed, 42 insertions(+), 5 deletions(-) -- 2.21.0

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[libvirt] [PATCH 0/2] add support for kvm-hint-dedicated performance hint
by Menno Lageman 12 Aug '19

12 Aug '19

QEMU version 2.12.1 introduced a performance feature under commit be7773268d98 ("target-i386: add KVM_HINTS_DEDICATED performance hint") This patch adds a new KVM feature 'hint-dedicated' to set this performance hint for KVM guests. Wim ten Have (2): qemu: support for kvm-hint-dedicated performance hint tests: add tests for kvm-hint-dedicated feature docs/formatdomain.html.in | 7 +++++++ docs/schemas/domaincommon.rng | 5 +++++ src/conf/domain_conf.c | 4 ++++ src/conf/domain_conf.h | 1 + src/qemu/qemu_command.c | 13 +++++++++++++ tests/qemuxml2argvdata/kvm-features-off.xml | 1 + tests/qemuxml2argvdata/kvm-features.args | 4 ++-- tests/qemuxml2argvdata/kvm-features.xml | 4 +++- tests/qemuxml2xmloutdata/kvm-features-off.xml | 1 + tests/qemuxml2xmloutdata/kvm-features.xml | 4 +++- 10 files changed, 40 insertions(+), 4 deletions(-) -- 2.21.0

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[libvirt] [PATCH v2 0/2] test_driver: implement get/set BlockIoTune APIs
by Ilias Stamatis 12 Aug '19

12 Aug '19

Ilias Stamatis (2): test_driver: implement testDomainGetBlockIoTune test_driver: implement virDomainSetBlockIoTune src/test/test_driver.c | 361 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 361 insertions(+) -- 2.22.0

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[libvirt] [PATCH] util: allow tap-based guest interfaces to have MAC address prefix 0xFE
by Laine Stump 12 Aug '19

12 Aug '19

Back in July 2010, commit 6ea90b84 (meant to resolve https://bugzilla.redhat.com/571991 ) added code to set the MAC address of any tap device to the associated guest interface's MAC, but with the first byte replaced with 0xFE. This was done in order to assure that 1) the tap MAC and guest interface MAC were different (otherwise L2 forwarding through the tap would not work, and the kernel would repeatedly issue a warning stating as much). 2) any bridge device that had one of these taps attached would *not* take on the MAC of the tap (leading to network instability as guests started and stopped) A couple years later, https://bugzilla.redhat.com/798467 was filed, complaining that a user could configure a tap-based guest interface to have a MAC address that itself had a first byte of 0xFE, silently (other than the kernel warning messages) resulting in a non-working configuration. This was fixed by commit 5d571045, which logged an error and failed the guest start / interface attach if the MAC's first byte was 0xFE. Although this restriction only reduces the potential pool of MAC addresses from 2^46 (last two bits of byte 1 must be set to 10) by 2^32 (still 4 orders of magnitude larger than the entire IPv4 address space), it also means that management software that autogenerates MAC addresses must have special code to avoid an 0xFE prefix. Now after 7 years, someone has noticed this restriction and requested that we remove it. So instead of failing when 0xFE is found as the first byte, this patch removes the restriction by just replacing the first byte in the tap device MAC with 0xFA if the first byte in the guest interface is 0xFE. 0xFA is the next-highest value that still has 10 as the lowest two bits, and still 2) meets the requirement of "tap MAC must be different from guest interface MAC", and 3) is high enough that there should never be an issue of the attached bridge device taking on the MAC of the tap. The result is that *any* MAC can be chosen by management software (although it would still not work correctly if a multicast MAC (lowest bit of first byte set to 1) was chosen), but that's a different issue). Signed-off-by: Laine Stump <laine(a)redhat.com> --- Yes, I find it slightly problematic that the same setting is in two different places in the code, but 1) that is pre-existing, and 2) if I moved the MAC address setting down one level into virNetDevTapCreate(), the code would *still* need to be duplicated, since there are two different implementations of virNetDevTapCreate(). If anyone is bothered by this, then I can resubmit with an extra patch to add a new virNetDevTapCreate() that just calls a platform-specific virNetDevTapCreateInternal(), then sets the tap mac address. Only by request though :-). src/qemu/qemu_interface.c | 11 ++++++++++- src/util/virnetdevtap.c | 26 ++++++++++++-------------- 2 files changed, 22 insertions(+), 15 deletions(-) diff --git a/src/qemu/qemu_interface.c b/src/qemu/qemu_interface.c index c8effa68f4..72ed51cb1f 100644 --- a/src/qemu/qemu_interface.c +++ b/src/qemu/qemu_interface.c @@ -444,8 +444,17 @@ qemuInterfaceEthernetConnect(virDomainDefPtr def, } virDomainAuditNetDevice(def, net, tunpath, true); + + /* The tap device's MAC address cannot match the MAC address + * used by the guest. This results in "received packet on + * vnetX with own address as source address" error logs from + * the kernel. + */ virMacAddrSet(&tapmac, &net->mac); - tapmac.addr[0] = 0xFE; + if (tapmac.addr[0] == 0xFE) + tapmac.addr[0] = 0xFA; + else + tapmac.addr[0] = 0xFE; if (virNetDevSetMAC(net->ifname, &tapmac) < 0) goto cleanup; diff --git a/src/util/virnetdevtap.c b/src/util/virnetdevtap.c index b65c26bee1..4548b51b5b 100644 --- a/src/util/virnetdevtap.c +++ b/src/util/virnetdevtap.c @@ -668,7 +668,6 @@ int virNetDevTapCreateInBridgePort(const char *brname, unsigned int flags) { virMacAddr tapmac; - char macaddrstr[VIR_MAC_STRING_BUFLEN]; size_t i; if (virNetDevTapCreate(ifname, tunpath, tapfd, tapfdSize, flags) < 0) @@ -682,19 +681,18 @@ int virNetDevTapCreateInBridgePort(const char *brname, */ virMacAddrSet(&tapmac, macaddr); if (!(flags & VIR_NETDEV_TAP_CREATE_USE_MAC_FOR_BRIDGE)) { - if (macaddr->addr[0] == 0xFE) { - /* For normal use, the tap device's MAC address cannot - * match the MAC address used by the guest. This results - * in "received packet on vnetX with own address as source - * address" error logs from the kernel. - */ - virReportError(VIR_ERR_CONFIG_UNSUPPORTED, - _("Unable to use MAC address starting with " - "reserved value 0xFE - '%s' - "), - virMacAddrFormat(macaddr, macaddrstr)); - goto error; - } - tapmac.addr[0] = 0xFE; /* Discourage bridge from using TAP dev MAC */ + /* The tap device's MAC address cannot match the MAC address + * used by the guest. This results in "received packet on + * vnetX with own address as source address" error logs from + * the kernel. Making the tap address as high as possible + * discourages the bridge from using this tap's MAC as its own + * (a Linux host bridge will take on the lowest numbered MAC + * of all devices attached to it). + */ + if (tapmac.addr[0] == 0xFE) + tapmac.addr[0] = 0xFA; + else + tapmac.addr[0] = 0xFE; } if (virNetDevSetMAC(*ifname, &tapmac) < 0) -- 2.21.0

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[libvirt] [PATCH] nwfilter: move standard XML configs out of examples dir
by Daniel P. Berrangé 12 Aug '19

12 Aug '19

The nwfilter XML configs are not merely examples, they are data that is actively shipped and used in production by users. Signed-off-by: Daniel P. Berrangé <berrange(a)redhat.com> --- examples/Makefile.am | 10 ---------- src/nwfilter/Makefile.inc.am | 8 ++++++++ .../xml/nwfilter => src/nwfilter/xml}/allow-arp.xml | 0 .../nwfilter/xml}/allow-dhcp-server.xml | 0 .../xml/nwfilter => src/nwfilter/xml}/allow-dhcp.xml | 0 .../nwfilter/xml}/allow-incoming-ipv4.xml | 0 .../xml/nwfilter => src/nwfilter/xml}/allow-ipv4.xml | 0 .../nwfilter/xml}/clean-traffic-gateway.xml | 0 .../nwfilter => src/nwfilter/xml}/clean-traffic.xml | 0 .../nwfilter/xml}/no-arp-ip-spoofing.xml | 0 .../nwfilter/xml}/no-arp-mac-spoofing.xml | 0 .../nwfilter => src/nwfilter/xml}/no-arp-spoofing.xml | 0 .../nwfilter => src/nwfilter/xml}/no-ip-multicast.xml | 0 .../nwfilter => src/nwfilter/xml}/no-ip-spoofing.xml | 0 .../nwfilter => src/nwfilter/xml}/no-mac-broadcast.xml | 0 .../nwfilter => src/nwfilter/xml}/no-mac-spoofing.xml | 0 .../nwfilter/xml}/no-other-l2-traffic.xml | 0 .../nwfilter/xml}/no-other-rarp-traffic.xml | 0 .../nwfilter/xml}/qemu-announce-self-rarp.xml | 0 .../nwfilter/xml}/qemu-announce-self.xml | 0 20 files changed, 8 insertions(+), 10 deletions(-) rename {examples/xml/nwfilter => src/nwfilter/xml}/allow-arp.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/allow-dhcp-server.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/allow-dhcp.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/allow-incoming-ipv4.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/allow-ipv4.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/clean-traffic-gateway.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/clean-traffic.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-arp-ip-spoofing.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-arp-mac-spoofing.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-arp-spoofing.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-ip-multicast.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-ip-spoofing.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-mac-broadcast.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-mac-spoofing.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-other-l2-traffic.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/no-other-rarp-traffic.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/qemu-announce-self-rarp.xml (100%) rename {examples/xml/nwfilter => src/nwfilter/xml}/qemu-announce-self.xml (100%) diff --git a/examples/Makefile.am b/examples/Makefile.am index 0adb4b42e2..ad635bdcc0 100644 --- a/examples/Makefile.am +++ b/examples/Makefile.am @@ -16,8 +16,6 @@ ## License along with this library. If not, see ## <http://www.gnu.org/licenses/>. -FILTERS = $(wildcard $(srcdir)/xml/nwfilter/*.xml) - ADMIN_EXAMPLES = \ $(wildcard $(srcdir)/c/admin/*.c) \ $(NULL) @@ -56,7 +54,6 @@ EXTRA_DIST = \ $(STORAGE_XML_EXAMPLES) \ $(SYSTEMTAP_EXAMPLES) \ $(TEST_XML_EXAMPLES) \ - $(FILTERS) \ $(NULL) AM_CPPFLAGS = \ @@ -111,13 +108,6 @@ c_misc_event_test_SOURCES = c/misc/event-test.c c_misc_hellolibvirt_SOURCES = c/misc/hellolibvirt.c c_misc_openauth_SOURCES = c/misc/openauth.c -if WITH_NWFILTER - -nwfilterdir = $(sysconfdir)/libvirt/nwfilter -nwfilter_DATA = $(FILTERS) - -endif WITH_NWFILTER - examplesdir = $(docdir)/examples adminexamplesdir = $(examplesdir)/c/admin diff --git a/src/nwfilter/Makefile.inc.am b/src/nwfilter/Makefile.inc.am index 277f75a9bd..7693634e29 100644 --- a/src/nwfilter/Makefile.inc.am +++ b/src/nwfilter/Makefile.inc.am @@ -1,5 +1,9 @@ # vim: filetype=automake +NWFILTER_XML_FILES = $(wildcard $(srcdir)/nwfilter/xml/*.xml) + +EXTRA_DIST += $(NWFILTER_XML_FILES) + NWFILTER_DRIVER_SOURCES = \ nwfilter/nwfilter_driver.h \ nwfilter/nwfilter_driver.c \ @@ -19,6 +23,10 @@ STATEFUL_DRIVER_SOURCE_FILES += $(NWFILTER_DRIVER_SOURCES) EXTRA_DIST += $(NWFILTER_DRIVER_SOURCES) if WITH_NWFILTER + +nwfilterxmldir = $(sysconfdir)/libvirt/nwfilter +nwfilterxml_DATA = $(NWFILTER_XML_FILES) + noinst_LTLIBRARIES += libvirt_driver_nwfilter_impl.la libvirt_driver_nwfilter_la_SOURCES = libvirt_driver_nwfilter_la_LIBADD = libvirt_driver_nwfilter_impl.la diff --git a/examples/xml/nwfilter/allow-arp.xml b/src/nwfilter/xml/allow-arp.xml similarity index 100% rename from examples/xml/nwfilter/allow-arp.xml rename to src/nwfilter/xml/allow-arp.xml diff --git a/examples/xml/nwfilter/allow-dhcp-server.xml b/src/nwfilter/xml/allow-dhcp-server.xml similarity index 100% rename from examples/xml/nwfilter/allow-dhcp-server.xml rename to src/nwfilter/xml/allow-dhcp-server.xml diff --git a/examples/xml/nwfilter/allow-dhcp.xml b/src/nwfilter/xml/allow-dhcp.xml similarity index 100% rename from examples/xml/nwfilter/allow-dhcp.xml rename to src/nwfilter/xml/allow-dhcp.xml diff --git a/examples/xml/nwfilter/allow-incoming-ipv4.xml b/src/nwfilter/xml/allow-incoming-ipv4.xml similarity index 100% rename from examples/xml/nwfilter/allow-incoming-ipv4.xml rename to src/nwfilter/xml/allow-incoming-ipv4.xml diff --git a/examples/xml/nwfilter/allow-ipv4.xml b/src/nwfilter/xml/allow-ipv4.xml similarity index 100% rename from examples/xml/nwfilter/allow-ipv4.xml rename to src/nwfilter/xml/allow-ipv4.xml diff --git a/examples/xml/nwfilter/clean-traffic-gateway.xml b/src/nwfilter/xml/clean-traffic-gateway.xml similarity index 100% rename from examples/xml/nwfilter/clean-traffic-gateway.xml rename to src/nwfilter/xml/clean-traffic-gateway.xml diff --git a/examples/xml/nwfilter/clean-traffic.xml b/src/nwfilter/xml/clean-traffic.xml similarity index 100% rename from examples/xml/nwfilter/clean-traffic.xml rename to src/nwfilter/xml/clean-traffic.xml diff --git a/examples/xml/nwfilter/no-arp-ip-spoofing.xml b/src/nwfilter/xml/no-arp-ip-spoofing.xml similarity index 100% rename from examples/xml/nwfilter/no-arp-ip-spoofing.xml rename to src/nwfilter/xml/no-arp-ip-spoofing.xml diff --git a/examples/xml/nwfilter/no-arp-mac-spoofing.xml b/src/nwfilter/xml/no-arp-mac-spoofing.xml similarity index 100% rename from examples/xml/nwfilter/no-arp-mac-spoofing.xml rename to src/nwfilter/xml/no-arp-mac-spoofing.xml diff --git a/examples/xml/nwfilter/no-arp-spoofing.xml b/src/nwfilter/xml/no-arp-spoofing.xml similarity index 100% rename from examples/xml/nwfilter/no-arp-spoofing.xml rename to src/nwfilter/xml/no-arp-spoofing.xml diff --git a/examples/xml/nwfilter/no-ip-multicast.xml b/src/nwfilter/xml/no-ip-multicast.xml similarity index 100% rename from examples/xml/nwfilter/no-ip-multicast.xml rename to src/nwfilter/xml/no-ip-multicast.xml diff --git a/examples/xml/nwfilter/no-ip-spoofing.xml b/src/nwfilter/xml/no-ip-spoofing.xml similarity index 100% rename from examples/xml/nwfilter/no-ip-spoofing.xml rename to src/nwfilter/xml/no-ip-spoofing.xml diff --git a/examples/xml/nwfilter/no-mac-broadcast.xml b/src/nwfilter/xml/no-mac-broadcast.xml similarity index 100% rename from examples/xml/nwfilter/no-mac-broadcast.xml rename to src/nwfilter/xml/no-mac-broadcast.xml diff --git a/examples/xml/nwfilter/no-mac-spoofing.xml b/src/nwfilter/xml/no-mac-spoofing.xml similarity index 100% rename from examples/xml/nwfilter/no-mac-spoofing.xml rename to src/nwfilter/xml/no-mac-spoofing.xml diff --git a/examples/xml/nwfilter/no-other-l2-traffic.xml b/src/nwfilter/xml/no-other-l2-traffic.xml similarity index 100% rename from examples/xml/nwfilter/no-other-l2-traffic.xml rename to src/nwfilter/xml/no-other-l2-traffic.xml diff --git a/examples/xml/nwfilter/no-other-rarp-traffic.xml b/src/nwfilter/xml/no-other-rarp-traffic.xml similarity index 100% rename from examples/xml/nwfilter/no-other-rarp-traffic.xml rename to src/nwfilter/xml/no-other-rarp-traffic.xml diff --git a/examples/xml/nwfilter/qemu-announce-self-rarp.xml b/src/nwfilter/xml/qemu-announce-self-rarp.xml similarity index 100% rename from examples/xml/nwfilter/qemu-announce-self-rarp.xml rename to src/nwfilter/xml/qemu-announce-self-rarp.xml diff --git a/examples/xml/nwfilter/qemu-announce-self.xml b/src/nwfilter/xml/qemu-announce-self.xml similarity index 100% rename from examples/xml/nwfilter/qemu-announce-self.xml rename to src/nwfilter/xml/qemu-announce-self.xml -- 2.21.0

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[libvirt] [PATCH] m4: Drop libxml2 version number from configure help
by Andrea Bolognani 12 Aug '19

12 Aug '19

We don't include this information for any other library, and having it there means there are two places we need to change every time the required version is bumped. configure will provide the user with a nice error message, which includes the required version, if libxml2 found on the system is too old. Signed-off-by: Andrea Bolognani <abologna(a)redhat.com> --- Pushed as trivial. m4/virt-libxml.m4 | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/m4/virt-libxml.m4 b/m4/virt-libxml.m4 index 9aefbdc3f1..cce54d88fb 100644 --- a/m4/virt-libxml.m4 +++ b/m4/virt-libxml.m4 @@ -18,7 +18,7 @@ dnl <http://www.gnu.org/licenses/>. dnl AC_DEFUN([LIBVIRT_ARG_LIBXML], [ - LIBVIRT_ARG_WITH([LIBXML], [libxml-2.0 (>= 2.9.1) location], [check]) + LIBVIRT_ARG_WITH([LIBXML], [libxml-2.0 location], [check]) ]) AC_DEFUN([LIBVIRT_CHECK_LIBXML], [ -- 2.21.0

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[libvirt] [PATCH v2 0/3] test_driver: implement the remaining ManagedSave APIs
by Ilias Stamatis 09 Aug '19

09 Aug '19

Ilias Stamatis (3): test_driver: use domain-private data to store managed image test_driver: implement virDomainManagedSaveGetXMLDesc test_driver: implement virDomainManagedSaveDefineXML src/test/test_driver.c | 93 +++++++++++++++++++++++++++++++++++++++++- 1 file changed, 92 insertions(+), 1 deletion(-) -- 2.22.0

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[libvirt] [PATCH v2] snapshot: Store both config and live XML in the snapshot domain
by Maxiwell S. Garcia 09 Aug '19

09 Aug '19

The snapshot-create operation of running guests saves the live XML and uses it to replace the active and inactive domain in case of revert. So, the config XML is ignored by the snapshot process. This commit changes it and adds the config XML in the snapshot XML as the <inactiveDomain> entry. In case of offline guest, the behavior remains the same and the config XML is saved in the snapshot XML as <domain> entry. The behavior of older snapshots of running guests, that don't have the new <inactiveDomain>, remains the same too. The revert, in this case, overrides both active and inactive domain with the <domain> entry. So, the <inactiveDomain> in the snapshot XML is not required to snapshot work, but it's useful to preserve the config XML of running guests. Signed-off-by: Maxiwell S. Garcia <maxiwell(a)linux.ibm.com> --- src/conf/moment_conf.c | 1 + src/conf/moment_conf.h | 11 +++++++++ src/conf/snapshot_conf.c | 48 +++++++++++++++++++++++++++++++++++----- src/qemu/qemu_driver.c | 27 +++++++++++++++++----- src/util/virxml.c | 45 +++++++++++++++++++++++++++++++++++++ src/util/virxml.h | 8 +++++++ 6 files changed, 130 insertions(+), 10 deletions(-) diff --git a/src/conf/moment_conf.c b/src/conf/moment_conf.c index fea13f0f97..f54a44b33e 100644 --- a/src/conf/moment_conf.c +++ b/src/conf/moment_conf.c @@ -66,6 +66,7 @@ virDomainMomentDefDispose(void *obj) VIR_FREE(def->description); VIR_FREE(def->parent_name); virDomainDefFree(def->dom); + virDomainDefFree(def->inactiveDom); } /* Provide defaults for creation time and moment name after parsing XML */ diff --git a/src/conf/moment_conf.h b/src/conf/moment_conf.h index 9fdbef2172..70cc47bd70 100644 --- a/src/conf/moment_conf.h +++ b/src/conf/moment_conf.h @@ -36,7 +36,18 @@ struct _virDomainMomentDef { char *parent_name; long long creationTime; /* in seconds */ + /* + * Store the active domain definition in case of online + * guest and the inactive domain definition in case of + * offline guest + */ virDomainDefPtr dom; + + /* + * Store the inactive domain definition in case of online + * guest and leave NULL in case of offline guest + */ + virDomainDefPtr inactiveDom; }; virClassPtr virClassForDomainMomentDef(void); diff --git a/src/conf/snapshot_conf.c b/src/conf/snapshot_conf.c index 324901a560..8aeac9ab20 100644 --- a/src/conf/snapshot_conf.c +++ b/src/conf/snapshot_conf.c @@ -243,6 +243,8 @@ virDomainSnapshotDefParse(xmlXPathContextPtr ctxt, char *memoryFile = NULL; bool offline = !!(flags & VIR_DOMAIN_SNAPSHOT_PARSE_OFFLINE); virSaveCookieCallbacksPtr saveCookie = virDomainXMLOptionGetSaveCookie(xmlopt); + int domainflags = VIR_DOMAIN_DEF_PARSE_INACTIVE | + VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE; if (!(def = virDomainSnapshotDefNew())) return NULL; @@ -292,8 +294,6 @@ virDomainSnapshotDefParse(xmlXPathContextPtr ctxt, * clients will have to decide between best effort * initialization or outright failure. */ if ((tmp = virXPathString("string(./domain/@type)", ctxt))) { - int domainflags = VIR_DOMAIN_DEF_PARSE_INACTIVE | - VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE; xmlNodePtr domainNode = virXPathNode("./domain", ctxt); VIR_FREE(tmp); @@ -309,6 +309,20 @@ virDomainSnapshotDefParse(xmlXPathContextPtr ctxt, } else { VIR_WARN("parsing older snapshot that lacks domain"); } + + /* /inactiveDomain entry saves the config XML present in a running + * VM. In case of absent, leave parent.inactiveDom NULL and use + * parent.dom for config and live XML. */ + if (virXPathString("string(./inactiveDomain/@type)", ctxt)) { + xmlNodePtr domainNode = virXPathNode("./inactiveDomain", ctxt); + + if (domainNode) { + def->parent.inactiveDom = virDomainDefParseNode(ctxt->node->doc, domainNode, + caps, xmlopt, NULL, domainflags); + if (!def->parent.inactiveDom) + goto cleanup; + } + } } else if (virDomainXMLOptionRunMomentPostParse(xmlopt, &def->parent) < 0) { goto cleanup; } @@ -845,6 +859,10 @@ virDomainSnapshotDefFormatInternal(virBufferPtr buf, { size_t i; int domainflags = VIR_DOMAIN_DEF_FORMAT_INACTIVE; + virBuffer inactivedom_buf = VIR_BUFFER_INITIALIZER; + xmlXPathContextPtr inactivedom_ctxt = NULL; + char *inactivedom_str = NULL; + int ret = -1; if (flags & VIR_DOMAIN_SNAPSHOT_FORMAT_SECURE) domainflags |= VIR_DOMAIN_DEF_FORMAT_SECURE; @@ -903,6 +921,20 @@ virDomainSnapshotDefFormatInternal(virBufferPtr buf, virBufferAddLit(buf, "</domain>\n"); } + if (def->parent.inactiveDom) { + if (virDomainDefFormatInternal(def->parent.inactiveDom, caps, + domainflags, &inactivedom_buf, xmlopt) < 0) + goto error; + + inactivedom_ctxt = virXPathBuildContext(&inactivedom_buf); + if (!(inactivedom_str = virXPathRenameNode("/domain", "inactiveDomain", + inactivedom_ctxt))) + goto error; + + virBufferAddStr(buf, inactivedom_str); + virBufferAddLit(buf, "\n"); + } + if (virSaveCookieFormatBuf(buf, def->cookie, virDomainXMLOptionGetSaveCookie(xmlopt)) < 0) goto error; @@ -917,11 +949,17 @@ virDomainSnapshotDefFormatInternal(virBufferPtr buf, if (virBufferCheckError(buf) < 0) goto error; - return 0; + ret = 0; error: - virBufferFreeAndReset(buf); - return -1; + VIR_FREE(inactivedom_str); + xmlXPathFreeContext(inactivedom_ctxt); + virBufferFreeAndReset(&inactivedom_buf); + + if (ret < 0) + virBufferFreeAndReset(buf); + + return ret; } diff --git a/src/qemu/qemu_driver.c b/src/qemu/qemu_driver.c index 482f915b67..9b95e9b766 100644 --- a/src/qemu/qemu_driver.c +++ b/src/qemu/qemu_driver.c @@ -15697,6 +15697,13 @@ qemuDomainSnapshotCreateXML(virDomainPtr domain, VIR_DOMAIN_DEF_PARSE_SKIP_VALIDATE))) goto endjob; + if (vm->newDef) { + def->parent.inactiveDom = virDomainDefCopy(vm->newDef, caps, + driver->xmlopt, NULL, true); + if (!def->parent.inactiveDom) + goto endjob; + } + if (flags & VIR_DOMAIN_SNAPSHOT_CREATE_DISK_ONLY) { align_location = VIR_DOMAIN_SNAPSHOT_LOCATION_EXTERNAL; align_match = false; @@ -16231,6 +16238,7 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot, qemuDomainObjPrivatePtr priv; int rc; virDomainDefPtr config = NULL; + virDomainDefPtr inactiveConfig = NULL; virQEMUDriverConfigPtr cfg = NULL; virCapsPtr caps = NULL; bool was_stopped = false; @@ -16331,17 +16339,22 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot, * in the failure cases where we know there was no change? */ } - /* Prepare to copy the snapshot inactive xml as the config of this - * domain. - * - * XXX Should domain snapshots track live xml rather - * than inactive xml? */ + /* Prepare to copy the snapshot inactive domain as the config XML + * and the snapshot domain as the live XML. In case of inactive domain + * NULL, both config and live XML will be copied from snapshot domain. + */ if (snap->def->dom) { config = virDomainDefCopy(snap->def->dom, caps, driver->xmlopt, NULL, true); if (!config) goto endjob; } + if (snap->def->inactiveDom) { + inactiveConfig = virDomainDefCopy(snap->def->inactiveDom, caps, + driver->xmlopt, NULL, true); + if (!inactiveConfig) + goto endjob; + } cookie = (qemuDomainSaveCookiePtr) snapdef->cookie; @@ -16592,6 +16605,10 @@ qemuDomainRevertToSnapshot(virDomainSnapshotPtr snapshot, goto endjob; } + if (inactiveConfig) { + virDomainDefFree(vm->newDef); + VIR_STEAL_PTR(vm->newDef, inactiveConfig); + } ret = 0; endjob: diff --git a/src/util/virxml.c b/src/util/virxml.c index f55b9a362c..756c0eedbc 100644 --- a/src/util/virxml.c +++ b/src/util/virxml.c @@ -1408,3 +1408,48 @@ virXPathContextNodeRestore(virXPathContextNodeSavePtr save) save->ctxt->node = save->node; } + + +/** + * virXPathBuildContext: convert an parent buffer to an + * XPath context ptr. The caller has to free the ptr. + */ +xmlXPathContextPtr +virXPathBuildContext(virBufferPtr root) +{ + xmlDocPtr doc; + + if (!root) + return NULL; + + doc = virXMLParseString(virBufferCurrentContent(root), NULL); + if (!doc) + return NULL; + + return xmlXPathNewContext(doc); +} + + +/** + * virXPathRenameNode: get the XML node using the 'xpath' and + * rename it with the 'newname' string. + * + * Returns the XML string of the node found by 'xpath' or NULL + * on error. The caller has to free the string. + */ +char * +virXPathRenameNode(const char *xpath, + const char *newname, + xmlXPathContextPtr ctxt) +{ + xmlNodePtr node; + + if (!xpath || !newname || !ctxt) + return NULL; + + if (!(node = virXPathNode(xpath, ctxt))) + return NULL; + + xmlNodeSetName(node, (xmlChar *) newname); + return virXMLNodeToString(node->doc, node); +} diff --git a/src/util/virxml.h b/src/util/virxml.h index 6208977dd1..48a507c3c1 100644 --- a/src/util/virxml.h +++ b/src/util/virxml.h @@ -220,6 +220,14 @@ virXMLFormatElement(virBufferPtr buf, virBufferPtr childBuf) ATTRIBUTE_RETURN_CHECK; +xmlXPathContextPtr +virXPathBuildContext(virBufferPtr root); + +char * +virXPathRenameNode(const char *xpath, + const char *newname, + xmlXPathContextPtr ctxt); + struct _virXPathContextNodeSave { xmlXPathContextPtr ctxt; xmlNodePtr node; -- 2.20.1

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[libvirt] [dockerfiles PATCH 0/4] refresh: Some minor cleanups
by Andrea Bolognani 09 Aug '19

09 Aug '19

Andrea Bolognani (4): refresh: Get rid of self.project_name refresh: Improve project handling refresh: Look for project with startswith() refresh: Update comments refresh | 44 +++++++++++++++++++++++--------------------- 1 file changed, 23 insertions(+), 21 deletions(-) -- 2.21.0

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