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[libvirt] Initializing qemu driver
by David kiarie 13 Aug '14

13 Aug '14

Hi there, I get this errors trying to intialialize libvirtd $libvirtd -vvv 2014-08-12 21:57:47.887+0000: 6449: info : libvirt version: 1.2.8 2014-08-12 21:57:47.887+0000: 6449: warning : virGetHostname:665 : getaddrinfo failed for 'linux-xzc4': Name or service not known 2014-08-12 21:57:48.034+0000: 6461: info : libvirt version: 1.2.8 2014-08-12 21:57:48.034+0000: 6461: error : virFileGetDefaultHugepageSize:2958 : internal error: Unable to parse /proc/meminfo 2014-08-12 21:57:48.034+0000: 6461: error : virStateInitialize:749 : Initialization of QEMU state driver failed: internal error: Unable to parse /proc/meminfo 2014-08-12 21:57:48.034+0000: 6461: error : daemonRunStateInit:922 : Driver state initialization failed Is someone else experiencing the same thing?

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[libvirt] [PATCH] maint: improve syntax check for space around =
by Eric Blake 12 Aug '14

12 Aug '14

Laine Stump noted on IRC that syntax check wasn't flagging his typo of 'i= 0'. This fixes it. * build-aux/bracket-spacing.pl: Tighten space-around-= rule. * src/storage/storage_backend.c (virStorageBackendCreateExecCommand): Fix offenders. * src/util/virnuma.c (virNumaGetDistances): Likewise. * src/vbox/vbox_tmpl.c (vboxDomainSnapshotDeleteMetadataOnly) (vboxNetworkGetXMLDesc): Likewise. * src/xenapi/xenapi_driver.c (xenapiDomainLookupByName): Likewise. Signed-off-by: Eric Blake <eblake(a)redhat.com> --- build-aux/bracket-spacing.pl | 11 +++++------ src/storage/storage_backend.c | 2 +- src/util/virnuma.c | 2 +- src/vbox/vbox_tmpl.c | 6 +++--- src/xenapi/xenapi_driver.c | 2 +- 5 files changed, 11 insertions(+), 12 deletions(-) diff --git a/build-aux/bracket-spacing.pl b/build-aux/bracket-spacing.pl index e4ae8f0..ac01a56 100755 --- a/build-aux/bracket-spacing.pl +++ b/build-aux/bracket-spacing.pl @@ -32,8 +32,8 @@ foreach my $file (@ARGV) { while (defined (my $line = <FILE>)) { my $data = $line; - # Kill any quoted , ; or " - $data =~ s/'[";,]'/'X'/g; + # Kill any quoted , ; = or " + $data =~ s/'[";,=]'/'X'/g; # Kill any quoted strings $data =~ s,"([^\\\"]|\\.)*","XXX",g; @@ -147,10 +147,9 @@ foreach my $file (@ARGV) { # Require spaces around assignment '=', compounds and '==' # with the exception of virAssertCmpInt() - while ($data =~ /[^!<>&|\-+*\/%\^'= ]=\+[^=]/ || - $data =~ /[^!<>&|\-+*\/%\^'=]=[^= \\\n]/ || - $data =~ /[\S]==/ || - ($data =~ /==[^\s,]/ && $data !~ /[\s]virAssertCmpInt\(/)) { + $data =~ s/(virAssertCmpInt\(.* ).?=,/$1op,/; + while ($data =~ /[^ ]\b[!<>&|\-+*\/%\^=]?=[^=]/ || + $data =~ /=[^= \\\n]/) { print "$file:$.: $line"; $ret = 1; last; diff --git a/src/storage/storage_backend.c b/src/storage/storage_backend.c index 5cada39..42eee75 100644 --- a/src/storage/storage_backend.c +++ b/src/storage/storage_backend.c @@ -615,7 +615,7 @@ virStorageBackendCreateExecCommand(virStoragePoolObjPtr pool, if (virCommandRun(cmd, NULL) == 0) { /* command was successfully run, check if the file was created */ - if (stat(vol->target.path, &st) >=0) + if (stat(vol->target.path, &st) >= 0) filecreated = true; } } diff --git a/src/util/virnuma.c b/src/util/virnuma.c index 7a11a3b..9e6e5f7 100644 --- a/src/util/virnuma.c +++ b/src/util/virnuma.c @@ -451,7 +451,7 @@ virNumaGetDistances(int node, *ndistances = max_node + 1; - for (i = 0; i<= max_node; i++) { + for (i = 0; i <= max_node; i++) { if (!virNumaNodeIsAvailable(node)) continue; diff --git a/src/vbox/vbox_tmpl.c b/src/vbox/vbox_tmpl.c index ccba736..bccb4a7 100644 --- a/src/vbox/vbox_tmpl.c +++ b/src/vbox/vbox_tmpl.c @@ -8397,7 +8397,7 @@ vboxDomainSnapshotDeleteMetadataOnly(virDomainSnapshotPtr snapshot) virDomainPtr dom = snapshot->domain; VBOX_OBJECT_CHECK(dom->conn, int, -1); - virDomainSnapshotDefPtr def= NULL; + virDomainSnapshotDefPtr def = NULL; char *defXml = NULL; vboxIID domiid = VBOX_IID_INITIALIZER; nsresult rc; @@ -10173,7 +10173,7 @@ static char *vboxNetworkGetXMLDesc(virNetworkPtr network, &dhcpServer); if (dhcpServer) { ipdef->nranges = 1; - if (VIR_ALLOC_N(ipdef->ranges, ipdef->nranges) >=0) { + if (VIR_ALLOC_N(ipdef->ranges, ipdef->nranges) >= 0) { PRUnichar *ipAddressUtf16 = NULL; PRUnichar *networkMaskUtf16 = NULL; PRUnichar *fromIPAddressUtf16 = NULL; @@ -10211,7 +10211,7 @@ static char *vboxNetworkGetXMLDesc(virNetworkPtr network, } ipdef->nhosts = 1; - if (VIR_ALLOC_N(ipdef->hosts, ipdef->nhosts) >=0) { + if (VIR_ALLOC_N(ipdef->hosts, ipdef->nhosts) >= 0) { if (VIR_STRDUP(ipdef->hosts[0].name, network->name) < 0) { VIR_FREE(ipdef->hosts); ipdef->nhosts = 0; diff --git a/src/xenapi/xenapi_driver.c b/src/xenapi/xenapi_driver.c index 5bcfd29..50331c9 100644 --- a/src/xenapi/xenapi_driver.c +++ b/src/xenapi/xenapi_driver.c @@ -691,7 +691,7 @@ xenapiDomainLookupByName(virConnectPtr conn, } vm = vms->contents[0]; xen_vm_get_uuid(session, &uuid, vm); - if (uuid!=NULL) { + if (uuid != NULL) { ignore_value(virUUIDParse(uuid, raw_uuid)); domP = virGetDomain(conn, name, raw_uuid); if (domP != NULL) { -- 1.7.1

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[libvirt] [PATCH 0/3] Fix libvirtd crash when starting two managedsave operations on a single domain
by Peter Krempa 12 Aug '14

12 Aug '14

We had an unfortunate code path where when you'd start two managedsave operations simultaneously libvirtd would crash. Fix it by adding a VM liveness check. Peter Krempa (3): qemu: managedsave: Check that VM is alive after entering async job security: selinux: Set saved state label only if it is available qemu: migration: Check domain live state after exitting the monitor src/qemu/qemu_driver.c | 6 ++++++ src/qemu/qemu_migration.c | 19 +++++++++++++++++-- src/security/security_selinux.c | 2 +- 3 files changed, 24 insertions(+), 3 deletions(-) -- 2.0.2

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[libvirt] [PATCH] bhyve: fix error message in bhyveStateInitialize
by Dmitry Guryanov 12 Aug '14

12 Aug '14

If we failed to create BHYVE_STATE_DIR, we should show this path, not BHYVE_LOG_DIR. --- src/bhyve/bhyve_driver.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/bhyve/bhyve_driver.c b/src/bhyve/bhyve_driver.c index 135cb24..eb8f9af 100644 --- a/src/bhyve/bhyve_driver.c +++ b/src/bhyve/bhyve_driver.c @@ -1191,7 +1191,7 @@ bhyveStateInitialize(bool priveleged ATTRIBUTE_UNUSED, if (virFileMakePath(BHYVE_STATE_DIR) < 0) { virReportSystemError(errno, _("Failed to mkdir %s"), - BHYVE_LOG_DIR); + BHYVE_STATE_DIR); goto cleanup; } -- 1.9.3

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[libvirt] [PATCH] qemu_conf: Undefine the correct symbol
by Michal Privoznik 12 Aug '14

12 Aug '14

At the beginning of the qemu config file parsing function there are 3 helper macros defined: GET_VALUE_BOOL, GET_VALUE_LONG and GET_VALUE_STR. Later, when they are no longer needed they are undefined in order to keep the namespace clean. However, the GET_VALUE_STRING is undefined instead of GET_VALUE_STR. Signed-off-by: Michal Privoznik <mprivozn(a)redhat.com> --- Pushed as trivial. src/qemu/qemu_conf.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/src/qemu/qemu_conf.c b/src/qemu/qemu_conf.c index b14b1bc..238d2b1 100644 --- a/src/qemu/qemu_conf.c +++ b/src/qemu/qemu_conf.c @@ -662,7 +662,7 @@ int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg, } #undef GET_VALUE_BOOL #undef GET_VALUE_LONG -#undef GET_VALUE_STRING +#undef GET_VALUE_STR virQEMUDriverConfigPtr virQEMUDriverGetConfig(virQEMUDriverPtr driver) { -- 1.8.5.5

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[libvirt] [PATCH v2] storage: ZFS support
by Roman Bogorodskiy 12 Aug '14

12 Aug '14

Changes from the initial version: - Update docs/schemas and docs/storage.html.in with ZFS backend information - Drop StartPool and StopPool that does nothing and therefore not needed - Fix memory leak in 'tokens' variable - Fill volume key before creating a volume - Use volume's target.path as a key - Allow not to specify 'target' for pool because in any case it should be /dev/zvol/$poolname Few notes on Linux support: I've been playing around with http://zfsonlinux.org/. I noticed it missed '-H' switch to provide a machine-friendly output and created a feature request: https://github.com/zfsonlinux/zfs/issues/2522 It was quickly fixed, so I've updated from the git version and moved on. >From that point it worked well and the only thing I had to modify is not to pass 'volmode' parameter during volume creation (it's freebsd specific and it could be e.g. just cdev or a FreeBSD geom provider). So, basically, for the current (limited) feature set the two things need to be checked on Linux: - zpool get support for -H switch - zfs volmode support for volume creation I'm open for suggestions what would be a good way to check it. For the '-H' thing, I was thinking about calling just 'zpool get -H' in StartPool. If the error says 'invalid option 'H'' (i.e. check if it just contains 'H'), then return an error that zfs version is too old. That's fragile, but probably less fragile than parsing usage that looks like that: usage: get [-pH] <"all" | property[,...]> <pool> ... As for the 'volmode', it's simple in terms of parsing, because e.g. 'zfs get' prints a nice set of parameters e.g.: volblocksize NO YES 512 to 128k, power of 2 volmode YES YES default | geom | dev | none volsize YES NO <size> So it should not be a problem to check it once and save in some sort of state struct inside of the ZFS backend. Roman Bogorodskiy (1): storage: ZFS support configure.ac | 43 +++++ docs/schemas/storagepool.rng | 20 +++ docs/storage.html.in | 34 ++++ include/libvirt/libvirt.h.in | 1 + po/POTFILES.in | 1 + src/Makefile.am | 8 + src/conf/storage_conf.c | 15 +- src/conf/storage_conf.h | 4 +- src/qemu/qemu_conf.c | 1 + src/storage/storage_backend.c | 6 + src/storage/storage_backend_zfs.c | 329 ++++++++++++++++++++++++++++++++++++++ src/storage/storage_backend_zfs.h | 29 ++++ src/storage/storage_driver.c | 1 + tools/virsh-pool.c | 3 + 14 files changed, 492 insertions(+), 3 deletions(-) create mode 100644 src/storage/storage_backend_zfs.c create mode 100644 src/storage/storage_backend_zfs.h -- 1.9.0

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[libvirt] [PATCH] qemu: process: Fix header format of qemuProcessSetVcpuAffinities
by Peter Krempa 12 Aug '14

12 Aug '14

Fix header alignment and remove the unused conn parameter. --- Notes: Pushed as trivial. src/qemu/qemu_process.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 407da5e..9e6a9ae 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -2221,8 +2221,7 @@ qemuProcessSetLinkStates(virDomainObjPtr vm) /* Set CPU affinities for vcpus if vcpupin xml provided. */ static int -qemuProcessSetVcpuAffinities(virConnectPtr conn ATTRIBUTE_UNUSED, - virDomainObjPtr vm) +qemuProcessSetVcpuAffinities(virDomainObjPtr vm) { qemuDomainObjPrivatePtr priv = vm->privateData; virDomainDefPtr def = vm->def; @@ -4243,7 +4242,7 @@ int qemuProcessStart(virConnectPtr conn, goto cleanup; VIR_DEBUG("Setting VCPU affinities"); - if (qemuProcessSetVcpuAffinities(conn, vm) < 0) + if (qemuProcessSetVcpuAffinities(vm) < 0) goto cleanup; VIR_DEBUG("Setting affinity of emulator threads"); -- 2.0.2

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[libvirt] [PATCH 1/1] qemu: min_guarantee: Parameter 'min_guarantee' not supported
by Erik Skultety 12 Aug '14

12 Aug '14

The 'min_guarantee' is used by esx and vmx drivers, with qemu however, libvirt should report error when starting a domain, because this element is not used. Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1122455 --- src/qemu/qemu_process.c | 7 +++++++ 1 file changed, 7 insertions(+) diff --git a/src/qemu/qemu_process.c b/src/qemu/qemu_process.c index 407da5e..22247fd 100644 --- a/src/qemu/qemu_process.c +++ b/src/qemu/qemu_process.c @@ -3994,6 +3994,13 @@ int qemuProcessStart(virConnectPtr conn, flags & VIR_QEMU_PROCESS_START_COLD) < 0) goto cleanup; + if (vm->def->mem.min_guarantee) { + virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s", + _("Parameter 'min_guarantee' " + "not supported")); + goto cleanup; + } + if (VIR_ALLOC(priv->monConfig) < 0) goto cleanup; -- 1.9.3

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[libvirt] [RFC][scale] new API for querying domains stats
by Francesco Romani 12 Aug '14

12 Aug '14

Hi everyone, I'd like to discuss possible APIs and plans for new query APIs in libvirt. I'm one of the oVirt (http://www.ovirt.org) developers, and I write code for VDSM; VDSM is the node management daemon, which is in charge, among many other things, to gather the host and statistics per Domain/VM. Right now we aim for a number of VM per node in the (few) hundreds, but we have big plans to scale much more, and to possibly reach thousands in a not so distant future. At the moment, we use one thread per VM to gather the VM stats (CPU, network, disk), and of course this obviously scales poorly. This is made only worse by the fact that VDSM is a python 2.7 application, and notoriously python 2.x behaves very badly with threads. We are already working to improve our code, but I'd like to bring the discussion here and see if and when the querying API can be improved. We currently use these APIs for our sempling: virDomainBlockInfo virDomainGetInfo virDomainGetCPUStats virDomainBlockStats virDomainBlockStatsFlags virDomainInterfaceStats virDomainGetVcpusFlags virDomainGetMetadata What we'd like to have is * asynchronous APIs for querying domain stats (https://bugzilla.redhat.com/show_bug.cgi?id=1113106) This would be just awesome. Either a single callback or a different one per call is fine (let's discuss this!). please note that we are much more concerned about thread reduction then about performance numbers. We had report of thread number becoming a real harm, while performance so far is not yet a concern (https://bugzilla.redhat.com/show_bug.cgi?id=1102147#c54) * bulk APIs for querying domain stats (https://bugzilla.redhat.com/show_bug.cgi?id=1113116) would be really welcome as well. It is quite independent from the previous bullet point and would help us greatly with scale. So, I'd like to discuss if these additions are (or can be) in the project roadmap, and, if so, how the API could look like and what the possible timeframe could be. Of course I'd be happy to provide any further information about VDSM and its workings. Thoughts very welcome! Thanks and best regards, -- Francesco Romani RedHat Engineering Virtualization R & D Phone: 8261328 IRC: fromani

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[libvirt] [PATCHv3] numatune: Fix parsing of empty nodeset (0,^0)
by Erik Skultety 12 Aug '14

12 Aug '14

Resolves https://bugzilla.redhat.com/show_bug.cgi?id=1121837 --- src/util/virbitmap.c | 3 +++ ...emuxml2argv-numatune-memory-invalid-nodeset.xml | 31 ++++++++++++++++++++++ tests/qemuxml2argvtest.c | 1 + 3 files changed, 35 insertions(+) create mode 100644 tests/qemuxml2argvdata/qemuxml2argv-numatune-memory-invalid-nodeset.xml diff --git a/src/util/virbitmap.c b/src/util/virbitmap.c index 27282df..b6bd074 100644 --- a/src/util/virbitmap.c +++ b/src/util/virbitmap.c @@ -378,6 +378,9 @@ virBitmapParse(const char *str, } } + if (virBitmapIsAllClear(*bitmap)) + goto error; + return virBitmapCountBits(*bitmap); error: diff --git a/tests/qemuxml2argvdata/qemuxml2argv-numatune-memory-invalid-nodeset.xml b/tests/qemuxml2argvdata/qemuxml2argv-numatune-memory-invalid-nodeset.xml new file mode 100644 index 0000000..079ca9d --- /dev/null +++ b/tests/qemuxml2argvdata/qemuxml2argv-numatune-memory-invalid-nodeset.xml @@ -0,0 +1,31 @@ +<domain type='qemu'> + <name>QEMUGuest1</name> + <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid> + <memory unit='KiB'>219136</memory> + <currentMemory unit='KiB'>219136</currentMemory> + <vcpu placement='static' cpuset='0-1'>2</vcpu> + <numatune> + <memory mode="strict" nodeset="0,^0"/> + </numatune> + <os> + <type arch='i686' machine='pc'>hvm</type> + <boot dev='hd'/> + </os> + <cpu> + <topology sockets='2' cores='1' threads='1'/> + </cpu> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <emulator>/usr/bin/qemu</emulator> + <disk type='block' device='disk'> + <source dev='/dev/HostVG/QEMUGuest1'/> + <target dev='hda' bus='ide'/> + <address type='drive' controller='0' bus='0' target='0' unit='0'/> + </disk> + <controller type='ide' index='0'/> + <memballoon model='virtio'/> + </devices> +</domain> diff --git a/tests/qemuxml2argvtest.c b/tests/qemuxml2argvtest.c index 1c121ff..62b969c 100644 --- a/tests/qemuxml2argvtest.c +++ b/tests/qemuxml2argvtest.c @@ -1210,6 +1210,7 @@ mymain(void) DO_TEST("cputune-zero-shares", QEMU_CAPS_NAME); DO_TEST("numatune-memory", NONE); + DO_TEST_PARSE_ERROR("numatune-memory-invalid-nodeset", NONE); DO_TEST("numatune-memnode", QEMU_CAPS_NUMA, QEMU_CAPS_OBJECT_MEMORY_RAM); DO_TEST_FAILURE("numatune-memnode", NONE); -- 1.9.3

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