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[libvirt] [libvirt-python PATCH] sanitytest: check for exported enums
by Martin Kletzander 06 Oct '14

06 Oct '14

We are already collecting list of enums exported and list of enums we want to have available. Event hough there was an issue with one enum fixed with 014d9bbaf368b33a881f1d6b2fd8a5dd285a4f71, there was no test for it and this commit tries to fix that. Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com> --- sanitytest.py | 53 +++++++++++++++++++++++++++++++++++++++++++++++++++-- 1 file changed, 51 insertions(+), 2 deletions(-) diff --git a/sanitytest.py b/sanitytest.py index 3c1568b..8cb0154 100644 --- a/sanitytest.py +++ b/sanitytest.py @@ -16,7 +16,10 @@ f = open(xml, "r") tree = lxml.etree.parse(f) verbose = False +fail = False +enumvals = {} +second_pass = [] wantenums = [] wantfunctions = [] @@ -25,11 +28,51 @@ set = tree.xpath('/api/files/file/exports[@type="function"]/@symbol') for n in set: wantfunctions.append(n) +set = tree.xpath('/api/symbols/enum') +for n in set: + typ = n.attrib['type'] + name = n.attrib['name'] + val = n.attrib['value'] + + if typ not in enumvals: + enumvals[typ] = {} + + # If the value cannot be converted to int, it is reference to + # another enum and needs to be sorted out later on + try: + val = int(val) + except ValueError: + second_pass.append(n) + continue + + enumvals[typ][name] = int(val) + +for n in second_pass: + typ = n.attrib['type'] + name = n.attrib['name'] + val = n.attrib['value'] + + for v in enumvals.values(): + if val in v: + val = int(v[val]) + break + + if type(val) != int: + fail = True + print("Cannot get a value of enum %s (originally %s)" % (val, name)) + enumvals[typ][name] = val + set = tree.xpath('/api/files/file/exports[@type="enum"]/@symbol') for n in set: + for enumval in enumvals.values(): + if n in enumval: + enum = enumval + break + # Eliminate sentinels + if n.endswith('_LAST') and enum[n] == max(enum.values()): + continue wantenums.append(n) - # Phase 2: Identify all classes and methods in the 'libvirt' python module gotenums = [] gottypes = [] @@ -51,6 +94,13 @@ for name in dir(libvirt): else: pass +for enum in wantenums: + if enum not in gotenums: + fail = True + for typ, enumval in enumvals.items(): + if enum in enumval: + print("FAIL Missing exported enum %s of type %s" % (enum, typ)) + for klassname in gottypes: klassobj = getattr(libvirt, klassname) for name in dir(klassobj): @@ -241,7 +291,6 @@ for name in sorted(basicklassmap): # Phase 5: Validate sure that every C API is mapped to a python API -fail = False usedfunctions = {} for name in sorted(finalklassmap): klass = finalklassmap[name][0] -- 2.1.2

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[libvirt] [PATCH 0/3] Fix hot unplug of scsi_host hostdev
by John Ferlan 06 Oct '14

06 Oct '14

https://bugzilla.redhat.com/show_bug.cgi?id=1141732 Attempting to hot unplug a scsi_host device fails. The first patch resolves the issue (and has some details in the commit message). The second patch removes the now unnecessary virConnectPtr from various places. The third patch resolves a potential issue if aliases weren't defined and debugging is enabled by making the check for NULL first before trying to message rather than the other way around. John Ferlan (3): qemu: Fix hot unplug of SCSI_HOST device qemu: Remove need for virConnectPtr in hotunplug detach host, net qemu: Remove possible NULL deref in debug output src/qemu/qemu_driver.c | 4 +-- src/qemu/qemu_hotplug.c | 70 +++++++++++++++++++++++-------------------------- src/qemu/qemu_hotplug.h | 6 ++--- 3 files changed, 37 insertions(+), 43 deletions(-) -- 1.9.3

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[libvirt] [PATCH 0/3] Save domain satus after change some parameters
by Shanzhi Yu 06 Oct '14

06 Oct '14

Bug: https://bugzilla.redhat.com/show_bug.cgi?id=1146511 Shanzhi Yu (3): qemu: save domain status after set the blkio parameters qemu: save domain status after set network interface's bandwidth parameters qemu: save domain status after set domain's numa parameters src/qemu/qemu_driver.c | 74 +++++++++++++++++++++++++++++++++++--------------- 1 file changed, 52 insertions(+), 22 deletions(-) -- 1.9.3

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[libvirt] [PATCH v3 00/14] vbox: rewrite network driver
by Taowei 06 Oct '14

06 Oct '14

This seriers of patches rewrite the vbox network driver. Diff from v2: *Seperate the network driver from the domain driver. *Prevent vbox code from being compiled too many times when building network driver. Taowei (14): vbox: Interfaces for register per parties vbox: Rewrite vboxNetworkOpen vbox: Rewrite vboxNetworkClose vbox: Rewrite vboxConnectNumOfNetworks vbox: Rewrite vboxConnectListNetworks vbox: Rewrite vboxConnectNumOfDefinedNetworks vbox: Rewrite vboxConnectListDefinedNetworks vbox: Rewrite vboxNetworkLookupByUUID vbox: Rewrite vboxNetworkLookupByName vbox: Rewrite vboxNetworkDefineCreateXML vbox: Rewrite vboxNetworkUndefineDestroy vbox: Rewrite vboxNetworkCreate vbox: Rewrite vboxNetworkGetXMLDesc vbox: New network driver po/POTFILES.in | 1 + src/Makefile.am | 16 +- src/vbox/vbox_common.c | 70 +- src/vbox/vbox_common.h | 16 + src/vbox/vbox_driver.c | 55 +- src/vbox/{vbox_install_api.h => vbox_get_driver.h} | 9 +- src/vbox/vbox_network.c | 1050 ++++++++++++++++ src/vbox/vbox_tmpl.c | 1261 +++++--------------- src/vbox/vbox_uniformed_api.h | 52 + 9 files changed, 1523 insertions(+), 1007 deletions(-) rename src/vbox/{vbox_install_api.h => vbox_get_driver.h} (79%) create mode 100644 src/vbox/vbox_network.c -- 1.7.9.5

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[libvirt] [PATCH] Include .libs in libdir in source tree pkg-config files
by Ján Tomko 06 Oct '14

06 Oct '14

This lets me build against an uninstalled source tree without libtool. --- src/libvirt-lxc.pc.in | 2 +- src/libvirt-qemu.pc.in | 2 +- src/libvirt.pc.in | 2 +- 3 files changed, 3 insertions(+), 3 deletions(-) diff --git a/src/libvirt-lxc.pc.in b/src/libvirt-lxc.pc.in index 20f173b..88e431b 100644 --- a/src/libvirt-lxc.pc.in +++ b/src/libvirt-lxc.pc.in @@ -4,7 +4,7 @@ prefix=@abs_top_builddir@ exec_prefix=@abs_top_builddir@ -libdir=@abs_top_builddir@/src +libdir=@abs_top_builddir@/src/.libs includedir=@abs_top_builddir@/include datarootdir=@abs_top_builddir@ diff --git a/src/libvirt-qemu.pc.in b/src/libvirt-qemu.pc.in index 1e2cadf..ed1f68a 100644 --- a/src/libvirt-qemu.pc.in +++ b/src/libvirt-qemu.pc.in @@ -4,7 +4,7 @@ prefix=@abs_top_builddir@ exec_prefix=@abs_top_builddir@ -libdir=@abs_top_builddir@/src +libdir=@abs_top_builddir@/src/.libs includedir=@abs_top_builddir@/include datarootdir=@abs_top_builddir@ diff --git a/src/libvirt.pc.in b/src/libvirt.pc.in index fa798cf..c2bdbb2 100644 --- a/src/libvirt.pc.in +++ b/src/libvirt.pc.in @@ -4,7 +4,7 @@ prefix=@abs_top_builddir@ exec_prefix=@abs_top_builddir@ -libdir=@abs_top_builddir@/src +libdir=@abs_top_builddir@/src/.libs includedir=@abs_top_builddir@/include datarootdir=@abs_top_builddir@ -- 2.0.4

2 2

[libvirt] [PATCH] docs: fix a typo in drvlxc
by Chen Hanxiao 06 Oct '14

06 Oct '14

s/the/The Signed-off-by: Chen Hanxiao <chenhanxiao(a)cn.fujitsu.com> --- docs/drvlxc.html.in | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/docs/drvlxc.html.in b/docs/drvlxc.html.in index 31da37c..a094bd9 100644 --- a/docs/drvlxc.html.in +++ b/docs/drvlxc.html.in @@ -167,7 +167,7 @@ numbered incrementally from there. Since /dev/ttyN and /dev/console are linked to the pts devices. The -tty device of login program is pts device. the pam module securetty +tty device of login program is pts device. The pam module securetty may prevent root user from logging in container. If you want root user to log in container successfully, add the pts device to the file /etc/securetty of container. -- 1.9.0

2 1

[libvirt] [PATCH v4] Add machine parameter qemu-kvm-migration for live migrate compatibility with qemu-kvm
by Alex Bligh 05 Oct '14

05 Oct '14

This patch series adds inbound migrate capability from qemu-kvm version 1.0. The main ideas are those set out in Cole Robinson's patch here: http://pkgs.fedoraproject.org/cgit/qemu.git/tree/0001-Fix-migration-from-qe… however, rather than patching statically (and breaking inbound migration on existing machine types), I have added a new machine parameter (qemu-kvm-migration) which when turned on affects the pc-1.0 machine type. Usage: -machine pc-1.0,qemu-kvm-migration=on Three aproaches are taken: * cirrus-vga.vgamem_mb defaults to 16 rather than 8. In order to keep -global cirrus-vga.vgamem_mb working even with qemu-kvm-migration=on, this is monkey-patched into the default value of the MachineState structure's compat_props list. * In hw/timer/i8254_common.c, the VMSTATE_UINT32_TEST macro is used to test the version for the irq_disable flags, allowing version 3 or more, or version 2 for an inbound migrate from qemu-kvm (only). * In hw/acpi/piix4.c, qemu-kvm incorrectly uses version 2 for a version 3 structure, causing acpi_load_old to be used. acpi_load_old detects this situation based on the machine type and restarts the attempt to load the vmstate using a customised VMStateDescription. The above cleaner approach is unavailable here. The above monkey-patching must be done between the selection of the MachineClass and the processing of the machine parameters (on the one hand) and the processing of the compat_props list and the globals on the command line. To do this I have added an earlyinit function to MachineState and QEMUMachine. I developed this on qemu 2.0 but have forward ported it (trivially) to master. My testing has been on a VM live-migrated-to-file from Ubuntu Precise qemu-kvm 1.0. I have given this a moderate degree of testing but it could do with more. Note that certain hardware devices (including QXL) will not migrate properly due to a fundamental difference in their internal state between versions. Also note that (as expected) migration from qemu-2.x to qemu-1.0 will not work, even if the machine types are the same. Changes since v1: * Do not use a machine type, use a machine parameter. Alex Bligh (1): Add machine parameter qemu-kvm-migration for live migrate compatibility with qemu-kvm hw/acpi/piix4.c | 47 +++++++++++++++++++++++++++++++++++++++++++++-- hw/core/machine.c | 16 ++++++++++++++++ hw/i386/pc.c | 1 + hw/i386/pc_piix.c | 25 +++++++++++++++++++++++++ hw/timer/i8254_common.c | 11 ++++++++++- include/hw/boards.h | 7 +++++++ vl.c | 7 +++++++ 7 files changed, 111 insertions(+), 3 deletions(-) -- 1.7.9.5

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[libvirt] [PATCH] Add machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm
by Alex Bligh 04 Oct '14

04 Oct '14

Add a machine type pc-1.0-qemu-kvm for live migrate compatibility with qemu-kvm version 1.0. This patch adds inbound migrate capability from qemu-kvm version 1.0. The main ideas are those set out in Cole Robinson's patch here: http://pkgs.fedoraproject.org/cgit/qemu.git/tree/0001-Fix-migration-from-qe… however, rather than patching statically (and breaking inbound migration on existing machine types), I have added a new machine type (pc-1.0-qemu-kvm) without affecting any other machine types. The existing pc-1.0 machine type is renamed to pc-1.0-qemu-git, with pc-1.0 becoming an alias for one or another, as selected by a configure option (defaulting to pc-1.0-qemu-git, IE no change). Two aproaches are taken: * In hw/timer/i8254_common.c, the VMSTATE_UINT32_TEST macro is used to test the version for the irq_disable flags, allowing version 3 or more, or version 2 for an inbound migrate from qemu-kvm (only). * In hw/acpi/piix4.c, qemu-kvm incorrectly uses version 2 for a version 3 structure, causing acpi_load_old to be used. acpi_load_old detects this situation based on the machine type and restarts the attempt to load the vmstate using a customised VMStateDescription. The above cleaner approach is unavailable here. I developed this on qemu 2.0 but have forward ported it (trivially) to master. My testing has been on a VM live-migrated-to-file from Ubuntu Precise qemu-kvm 1.0. I have given this a moderate degree of testing but it could do with more. Note that certain hardware devices (including QXL) will not migrate properly due to a fundamental difference in their internal state between versions. Also note that (as expected) migration from qemu-2.x to qemu-1.0 will not work, even if the machine types are the same. Changes from v4 * Revert to using a machine type, but do not add alias machine types, configure options, or (potentially) change the meaning of pc-1.0 - leave this for distributions to ponder * Add compat_props for qemu-kvm-migration to the PIIX4_PM driver and the i8259 pit-common driver. Signed-off-by: Alex Bligh <alex(a)alex.org.uk> --- hw/acpi/piix4.c | 26 +++++++++++++++++++++++--- hw/i386/pc_piix.c | 27 +++++++++++++++++++++++++++ hw/timer/i8254_common.c | 18 +++++++++++++++++- include/hw/i386/pc.h | 8 ++++++++ include/hw/timer/i8254_internal.h | 1 + 5 files changed, 76 insertions(+), 4 deletions(-) diff --git a/hw/acpi/piix4.c b/hw/acpi/piix4.c index b72b34e..5c68d69 100644 --- a/hw/acpi/piix4.c +++ b/hw/acpi/piix4.c @@ -86,6 +86,8 @@ typedef struct PIIX4PMState { Notifier cpu_added_notifier; MemHotplugState acpi_memory_hotplug; + + bool qemu_kvm_migration; } PIIX4PMState; #define TYPE_PIIX4_PM "PIIX4_PM" @@ -200,12 +202,26 @@ static const VMStateDescription vmstate_pci_status = { } }; +static const VMStateDescription vmstate_acpi; + static int acpi_load_old(QEMUFile *f, void *opaque, int version_id) { PIIX4PMState *s = opaque; int ret, i; uint16_t temp; + /* If we are expecting the inbound migration to come from + * qemu-kvm 1.0, it will have a version_id of 2 but really + * be version 3, so call back the original vmstate_load_state + * with a different more tolerant vmstate descriptor + */ + if (version_id == 2 && s->qemu_kvm_migration) { + VMStateDescription vmstate_acpi_compat = vmstate_acpi; + vmstate_acpi_compat.minimum_version_id = 2; + return vmstate_load_state(f, &vmstate_acpi_compat, + opaque, version_id); + } + ret = pci_device_load(PCI_DEVICE(s), f); if (ret < 0) { return ret; @@ -267,9 +283,11 @@ static const VMStateDescription vmstate_memhp_state = { }; /* qemu-kvm 1.2 uses version 3 but advertised as 2 - * To support incoming qemu-kvm 1.2 migration, change version_id - * and minimum_version_id to 2 below (which breaks migration from - * qemu 1.2). + * To support incoming qemu-kvm 1.2 migration, we support + * via a command line option a change to minimum_version_id + * of 2 in a _compat structure; we can't do this all the time + * as using a minimum_version_id of 2 (rather than 3) would + * break migration from qemu-git 1.2. * */ static const VMStateDescription vmstate_acpi = { @@ -589,6 +607,8 @@ static Property piix4_pm_properties[] = { use_acpi_pci_hotplug, true), DEFINE_PROP_BOOL("memory-hotplug-support", PIIX4PMState, acpi_memory_hotplug.is_enabled, true), + DEFINE_PROP_BOOL("qemu-kvm-migration", PIIX4PMState, + qemu_kvm_migration, false), DEFINE_PROP_END_OF_LIST(), }; diff --git a/hw/i386/pc_piix.c b/hw/i386/pc_piix.c index 7081c08..56555c1 100644 --- a/hw/i386/pc_piix.c +++ b/hw/i386/pc_piix.c @@ -644,6 +644,32 @@ static QEMUMachine pc_machine_v1_0 = { .hw_version = "1.0", }; +#define PC_COMPAT_1_0_QEMU_KVM \ + PC_COMPAT_1_0,\ + {\ + .driver = "cirrus-vga",\ + .property = "vgamem_mb",\ + .value = stringify(16),\ + },{\ + .driver = "pit-common",\ + .property = "qemu-kvm-migration",\ + .value = "on",\ + },{\ + .driver = "PIIX4_PM",\ + .property = "qemu-kvm-migration",\ + .value = "on",\ + } + +static QEMUMachine pc_machine_v1_0_qemu_kvm = { + PC_I440FX_1_2_MACHINE_OPTIONS, + .name = "pc-1.0-qemu-kvm", + .compat_props = (GlobalProperty[]) { + PC_COMPAT_1_0_QEMU_KVM, + { /* end of list */ } + }, + .hw_version = "1.0", +}; + #define PC_COMPAT_0_15 \ PC_COMPAT_1_0 @@ -886,6 +912,7 @@ static void pc_machine_init(void) qemu_register_pc_machine(&pc_machine_v1_2); qemu_register_pc_machine(&pc_machine_v1_1); qemu_register_pc_machine(&pc_machine_v1_0); + qemu_register_pc_machine(&pc_machine_v1_0_qemu_kvm); qemu_register_pc_machine(&pc_machine_v0_15); qemu_register_pc_machine(&pc_machine_v0_14); qemu_register_pc_machine(&pc_machine_v0_13); diff --git a/hw/timer/i8254_common.c b/hw/timer/i8254_common.c index 07345f6..7f3e4e3 100644 --- a/hw/timer/i8254_common.c +++ b/hw/timer/i8254_common.c @@ -257,6 +257,14 @@ static int pit_dispatch_post_load(void *opaque, int version_id) return 0; } +static bool has_irq_disabled(void *opaque, int version_id) +{ + PITCommonState *s = opaque; + return (version_id >= 3) || + (version_id == 2 && + s->qemu_kvm_migration); +} + static const VMStateDescription vmstate_pit_common = { .name = "i8254", .version_id = 3, @@ -266,7 +274,8 @@ static const VMStateDescription vmstate_pit_common = { .pre_save = pit_dispatch_pre_save, .post_load = pit_dispatch_post_load, .fields = (VMStateField[]) { - VMSTATE_UINT32_V(channels[0].irq_disabled, PITCommonState, 3), + VMSTATE_UINT32_TEST(channels[0].irq_disabled, PITCommonState, + has_irq_disabled), VMSTATE_STRUCT_ARRAY(channels, PITCommonState, 3, 2, vmstate_pit_channel, PITChannelState), VMSTATE_INT64(channels[0].next_transition_time, @@ -275,6 +284,12 @@ static const VMStateDescription vmstate_pit_common = { } }; +static Property pit_common_properties[] = { + DEFINE_PROP_BOOL("qemu-kvm-migration", PITCommonState, + qemu_kvm_migration, false), + DEFINE_PROP_END_OF_LIST(), +}; + static void pit_common_class_init(ObjectClass *klass, void *data) { DeviceClass *dc = DEVICE_CLASS(klass); @@ -287,6 +302,7 @@ static void pit_common_class_init(ObjectClass *klass, void *data) * done by board code. */ dc->cannot_instantiate_with_device_add_yet = true; + dc->props = pit_common_properties; } static const TypeInfo pit_common_type = { diff --git a/include/hw/i386/pc.h b/include/hw/i386/pc.h index 1c0c382..e420dbc 100644 --- a/include/hw/i386/pc.h +++ b/include/hw/i386/pc.h @@ -346,6 +346,14 @@ bool e820_get_entry(int, uint32_t, uint64_t *, uint64_t *); .driver = "ioh3420",\ .property = COMPAT_PROP_PCP,\ .value = "off",\ + },{\ + .driver = "pit-common",\ + .property = "qemu-kvm-migration",\ + .value = "off",\ + },{\ + .driver = "PIIX4_PM",\ + .property = "qemu-kvm-migration",\ + .value = "off",\ } #define PC_COMPAT_1_7 \ diff --git a/include/hw/timer/i8254_internal.h b/include/hw/timer/i8254_internal.h index 61a1bfb..5f7ee36 100644 --- a/include/hw/timer/i8254_internal.h +++ b/include/hw/timer/i8254_internal.h @@ -55,6 +55,7 @@ typedef struct PITCommonState { MemoryRegion ioports; uint32_t iobase; PITChannelState channels[3]; + bool qemu_kvm_migration; } PITCommonState; #define TYPE_PIT_COMMON "pit-common" -- 1.7.9.5

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[libvirt] [PATCH] minor shmem clean-ups
by Martin Kletzander 04 Oct '14

04 Oct '14

Signed-off-by: Martin Kletzander <mkletzan(a)redhat.com> --- Notes: Pushed as trivial. This was pointed out by Eric in the shmem series after I've pushed it. docs/formatdomain.html.in | 2 +- src/conf/domain_conf.c | 5 ++--- src/qemu/qemu_command.c | 5 ++--- 3 files changed, 5 insertions(+), 7 deletions(-) diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 8e50b8c..45b0f61 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -5587,7 +5587,7 @@ qemu-kvm -net nic,model=? /dev/null A shared memory device allows to share a memory region between different virtual machines and the host. - Since 1.2.9, QEMU and KVM only + Since 1.2.10, QEMU and KVM only <pre> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 6c07ed6..a9c6f05 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -17603,7 +17603,7 @@ virDomainShmemDefFormat(virBufferPtr buf, virDomainShmemDefPtr def, unsigned int flags) { - virBufferAsprintf(buf, "<shmem name='%s'", def->name); + virBufferEscapeString(buf, "<shmem name='%s'", def->name); if (!def->size && !def->server.enabled && @@ -17618,8 +17618,7 @@ virDomainShmemDefFormat(virBufferPtr buf, virBufferAdjustIndent(buf, 2); if (def->size) - virBufferAsprintf(buf, "<size unit='M'>%llu</size>\n", - VIR_DIV_UP(def->size, 1024 * 1024)); + virBufferAsprintf(buf, "<size unit='M'>%llu</size>\n", def->size >> 20); if (def->server.enabled) { virBufferAddLit(buf, "<server"); diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c index 6c22630..8cb0865 100644 --- a/src/qemu/qemu_command.c +++ b/src/qemu/qemu_command.c @@ -7549,7 +7549,7 @@ qemuBuildShmemDevCmd(virCommandPtr cmd, /* * Thanks to our parsing code, we have a guarantee that the * size is power of two and is at least a mebibyte in size. - * But because it may change inthe future, the checks are + * But because it may change in the future, the checks are * doubled in here. */ if (shmem->size & (shmem->size - 1)) { @@ -7562,8 +7562,7 @@ qemuBuildShmemDevCmd(virCommandPtr cmd, _("shmem size must be at least 1 MiB")); goto error; } - virBufferAsprintf(&buf, ",size=%llum", - VIR_DIV_UP(shmem->size, 1024 * 1024)); + virBufferAsprintf(&buf, ",size=%llum", shmem->size >> 20); } if (!shmem->server.enabled) { -- 2.1.2

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[libvirt] [PATCH] qemu: support nospace reason in io error event
by Eric Blake 03 Oct '14

03 Oct '14

Aeons ago (commit 34dcbbb4, v0.8.2), we added a new libvirt event (VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON) in order to tell the user WHY the guest halted. This is because at least VDSM wants to react differently to ENOSPC events (resize the lvm partition to be larger, and resume the guest as if nothing had happened) from all other events (I/O is hosed, throw up our hands and flag things as broken). At the time this was done, downstream RHEL qemu added a vendor extension '__com.redhat_reason', which would be exactly one of these strings: "enospc", "eperm", "eio", and "eother". In our stupidity, we exposed those exact strings to clients, rather than an enum, and we also return "" if we did not have access to a reason (which was the case for upstream qemu). Fast forward to now: upstream qemu commit c7c2ff0c (will be qemu 2.2) FINALLY adds a 'nospace' boolean, after discussion with multiple projects determined that VDSM really doesn't care about distinction between any other error types. So this patch converts 'nospace' into the string "enospc" for compatibility with RHEL clients that were already used to the downstream extension, while leaving the reason blank for all other cases (no change from the status quo). See also https://bugzilla.redhat.com/show_bug.cgi?id=1119784 * src/qemu/qemu_monitor_json.c (qewmuMonitorJSONHandleIOError): Parse reason field from modern qemu. * include/libvirt/libvirt.h.in (virConnectDomainEventIOErrorReasonCallback): Document it. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- include/libvirt/libvirt.h.in | 6 ++++++ src/qemu/qemu_monitor_json.c | 16 ++++++---------- 2 files changed, 12 insertions(+), 10 deletions(-) diff --git a/include/libvirt/libvirt.h.in b/include/libvirt/libvirt.h.in index c9018c0..c910b31 100644 --- a/include/libvirt/libvirt.h.in +++ b/include/libvirt/libvirt.h.in @@ -4884,6 +4884,12 @@ typedef void (*virConnectDomainEventIOErrorCallback)(virConnectPtr conn, * The callback signature to use when registering for an event of type * VIR_DOMAIN_EVENT_ID_IO_ERROR_REASON with virConnectDomainEventRegisterAny() * + * If the I/O error is known to be caused by an ENOSPC condition in + * the host (where resizing the disk to be larger will allow the guest + * to be resumed as if nothing happened), @reason will be "enospc". + * Otherwise, @reason will be "", although future strings may be added + * if determination of other error types becomes possible. + * */ typedef void (*virConnectDomainEventIOErrorReasonCallback)(virConnectPtr conn, virDomainPtr dom, diff --git a/src/qemu/qemu_monitor_json.c b/src/qemu/qemu_monitor_json.c index 90a125f..6504d15 100644 --- a/src/qemu/qemu_monitor_json.c +++ b/src/qemu/qemu_monitor_json.c @@ -739,11 +739,13 @@ VIR_ENUM_IMPL(qemuMonitorIOErrorAction, VIR_DOMAIN_EVENT_IO_ERROR_LAST, "ignore", "stop", "report"); -static void qemuMonitorJSONHandleIOError(qemuMonitorPtr mon, virJSONValuePtr data) +static void +qemuMonitorJSONHandleIOError(qemuMonitorPtr mon, virJSONValuePtr data) { const char *device; const char *action; - const char *reason; + const char *reason = ""; + bool nospc = false; int actionID; /* Throughout here we try our best to carry on upon errors, @@ -759,14 +761,8 @@ static void qemuMonitorJSONHandleIOError(qemuMonitorPtr mon, virJSONValuePtr dat VIR_WARN("missing device in disk io error event"); } -#if 0 - if ((reason = virJSONValueObjectGetString(data, "reason")) == NULL) { - VIR_WARN("missing reason in disk io error event"); - reason = ""; - } -#else - reason = ""; -#endif + if (virJSONValueObjectGetBoolean(data, "nospace", &nospc) == 0 && nospc) + reason = "enospc"; if ((actionID = qemuMonitorIOErrorActionTypeFromString(action)) < 0) { VIR_WARN("unknown disk io error action '%s'", action); -- 1.9.3

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