- Devel - libvirt List Archives

[libvirt] Createion of external snapshot qcow2
by Pankaj Rawat 26 Mar '12

26 Mar '12

Hi all, I have a query regarding the external snapshot in qcow2 also known as backing file. In qemu I created a external snapshot and then create its xml in order to boot it from VIRSH. But that is complex process. I want to know whether there is any command in LIBVIRT which can create external snapshot(Backing file) and also we can boot from it? DISCLAIMER: ----------------------------------------------------------------------------------------------------------------------- The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only. It shall not attach any liability on the originator or NECHCL or its affiliates. Any views or opinions presented in this email are solely those of the author and may not necessarily reflect the opinions of NECHCL or its affiliates. Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have received this email in error please delete it and notify the sender immediately. . -----------------------------------------------------------------------------------------------------------------------

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[libvirt] [PATCH 0/3] build: fix 3 Fedora 17 build errors
by Laine Stump 26 Mar '12

26 Mar '12

The first two of these ("missing initializer") I would expect anybody to get if they're building with -Wall on Fedora 17, but the problems have been there at least since the last libvirt release. The last error only happens if you manually specify CFLAGS with no -O (or with -O0). Although these break the build for me, none of it is new, so I'll wait for ACKs before pushing. (I do think it would be good to get these fixes into the -rc2 candidate, though).

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[libvirt] libvirt support for hot plugging multifunction PCI devices to KVM guests
by Nandini Chandra 26 Mar '12

26 Mar '12

I'd like to understand where libvirt is with regards to supporting hot plugging of multifunction PCI devices to a KVM guest. http://www.redhat.com/archives/libvir-list/2011-December/msg00621.html According to the above thread,the --multifunction option can be specified with the virsh attach-disk command.What purpose does this option serve? Thanks, Nandini Chandra

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[libvirt] sr-iov ethernet VF is not assigned correctly to guest
by Scott 26 Mar '12

26 Mar '12

Hi, I'm hoping someone could possibly show me what I may be doing wrong here, and why I'm not seeing the expected results Thanks in advance! Server Information:HP Product Name: ProLiant DL165 G7 Ethernet Card Information: Intel 82599EB 10-Gigabit SFI/SFP+ uname: Linux 3.0.0-16-server x86_64 GNU/Linux OS Release: Ubuntu 11.10 qemu-kvm version 0.14.1+noroms-0ubuntu6.2 First, here's a list of my VFs: # ip link show: 2: eth0: <BROADCAST,MULTICAST,SLAVE,UP,LOWER_UP> mtu 1500 qdisc mq master bond0 state UP qlen 1000 link/ether 00:1b:21:7d:70:16 brd ff:ff:ff:ff:ff:ff vf 0 MAC 02:22:25:00:00:00 vf 1 MAC 02:22:25:00:00:01 vf 2 MAC 02:22:25:00:00:02 vf 3 MAC 02:22:25:00:00:03 vf 4 MAC 02:22:25:00:00:04 vf 5 MAC 02:22:25:00:00:05 vf 6 MAC 02:22:25:00:00:06 3: eth1: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 1500 qdisc mq master bond0 state DOWN qlen 1000 link/ether 00:1b:21:7d:70:16 brd ff:ff:ff:ff:ff:ff vf 0 MAC 02:22:25:01:00:00 vf 1 MAC 02:22:25:01:00:01 vf 2 MAC 02:22:25:01:00:02 vf 3 MAC 02:22:25:01:00:03 vf 4 MAC 02:22:25:01:00:04 vf 5 MAC 02:22:25:01:00:05 vf 6 MAC 02:22:25:01:00:06 # lspci |grep 05 05:00.0 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 05:00.1 Ethernet controller: Intel Corporation 82576 Gigabit Network Connection (rev 01) 05:10.0 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.1 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.2 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.3 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.4 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.5 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.6 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:10.7 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.0 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.1 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.2 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.3 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.4 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) 05:11.5 Ethernet controller: Intel Corporation 82576 Virtual Function (rev 01) # virsh nodedev-list |grep 05 pci_0000_05_00_0 pci_0000_05_00_1 pci_0000_05_10_0 pci_0000_05_10_1 pci_0000_05_10_2 pci_0000_05_10_3 pci_0000_05_10_4 pci_0000_05_10_5 pci_0000_05_10_6 pci_0000_05_10_7 pci_0000_05_11_0 pci_0000_05_11_1 pci_0000_05_11_2 pci_0000_05_11_3 pci_0000_05_11_4 pci_0000_05_11_5 4 Now detach 05.10.0 and 05.11.0 from the host: # virsh nodedev-dettach pci_0000_05_10_0 Device pci_0000_05_10_0 dettached # virsh nodedev-dettach pci_0000_05_11_0 Device pci_0000_05_11_0 dettached 5. Get the host, slot, function information: # virsh nodedev-dumpxml pci_0000_05_10_0|grep -e bus -e slot -e fun |head -3 <bus>5</bus> <slot>16</slot> <function>0</function> # virsh nodedev-dumpxml pci_0000_05_11_0|grep -e bus -e slot -e fun |head -3 <bus>5</bus> <slot>17</slot> <function>0</function> == GUEST-A == XML: ... <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x05' slot='0x10' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </hostdev> <hostdev mode='subsystem' type='pci' managed='yes'> <source> <address domain='0x0000' bus='0x05' slot='0x11' function='0x0'/> </source> <address type='pci' domain='0x0000' bus='0x00' slot='0x05' function='0x0'/> </hostdev> ... CLI: /usr/bin/kvm -S \ -M pc-0.14 \ -enable-kvm \ -m 256 \ -smp 1,sockets=1,cores=1,threads=1 \ -name GUEST-A \ -uuid 9bac7b2f-dbb4-0f2a-08e6-47018d6630db \ -nodefconfig -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/HOST-A.monitor,server,nowait \ -mon chardev=charmonitor,id=monitor,mode=readline \ -rtc base=utc \ -boot cn \ -drive file=/srv/node/sdc1/HOST-A.raw,if=none,id=drive-virtio-disk0,boot=on,format=raw,cache=none \ -device virtio-blk-pci,bus=pci.0,addr=0x3,drive=drive-virtio-disk0,id=virtio-disk0 \ -chardev pty,id=charserial0 \ -device isa-serial,chardev=charserial0,id=serial0 \ -usb \ -vnc 0.0.0.0:0 \ -vga cirrus \ -device pci-assign,host=05:10.0,id=hostdev0,configfd=20,bus=pci.0,addr=0x4 \ -device pci-assign,host=05:11.0,id=hostdev1,configfd=21,bus=pci.0,addr=0x5 \ -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x6 dmesg: [ 3.072509] igbvf 0000:00:04.0: Intel(R) 82576 Virtual Function [ 3.072514] igbvf 0000:00:04.0: Address: 02:22:25:00:00:00 [ 3.072516] igbvf 0000:00:04.0: MAC: 1 [ 3.241325] igbvf 0000:00:05.0: Intel(R) 82576 Virtual Function [ 3.241329] igbvf 0000:00:05.0: Address: 02:22:25:00:00:04 [ 3.241332] igbvf 0000:00:05.0: MAC: 1 ip link: 2: eth0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:22:25:00:00:00 brd ff:ff:ff:ff:ff:ff 3: eth1: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UP qlen 1000 link/ether 02:22:25:00:00:04 brd ff:ff:ff:ff:ff:ff Expected Results: GUEST-A should have the following assignment: eth0 should = eth0-vf0 (bus:5, slot:10, fun:0), mac: 02:22:25:00:00:00 eth1 should = eth1-vf0 (bus:5, slot:11, fun:0), mac: 02:22:25:01:00:00

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[libvirt] [PATCH 1/2] Add support for setting init argv for LXC
by Daniel P. Berrange 26 Mar '12

26 Mar '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> Pass argv to the init binary of LXC, using a new <initarg> element. * docs/formatdomain.html.in: Document <os> usage for containers * docs/schemas/domaincommon.rng: Add <initarg> element * src/conf/domain_conf.c, src/conf/domain_conf.h: parsing and formatting of <initarg> * src/lxc/lxc_container.c: Setup LXC argv * tests/Makefile.am, tests/lxcxml2xmldata/lxc-systemd.xml, tests/lxcxml2xmltest.c, tests/testutilslxc.c, tests/testutilslxc.h: Test parsing/formatting of LXC related XML parts --- docs/formatdomain.html.in | 22 +++++ docs/schemas/domaincommon.rng | 5 + src/conf/domain_conf.c | 28 ++++++- src/conf/domain_conf.h | 1 + src/lxc/lxc_container.c | 3 + tests/Makefile.am | 21 +++++ tests/lxcxml2xmldata/lxc-systemd.xml | 30 +++++++ tests/lxcxml2xmltest.c | 141 ++++++++++++++++++++++++++++++++++ tests/testutilslxc.c | 63 +++++++++++++++ tests/testutilslxc.h | 4 + 10 files changed, 316 insertions(+), 2 deletions(-) create mode 100644 tests/lxcxml2xmldata/lxc-systemd.xml create mode 100644 tests/lxcxml2xmltest.c create mode 100644 tests/testutilslxc.c create mode 100644 tests/testutilslxc.h diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index c2eabc5..1211e50 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -250,6 +250,28 @@ installation media source / kickstart file</dd> </dl> + <h4><a name="eleemntsOSContainer">Container boot</a></h4> + + <p> + When booting a domain using container based virtualization, instead + of a kernel / boot image, a path to the init binary is required, using + the <code>init</code> element. By default this will be launched with + no arguments. To specify the initial argv, use the <code>initarg</code> + element, repeated as many time as is required. The <code>cmdline</code> + element, if set will be used to provide an equivalent to <code>/proc/cmdline</code> + but will not effect init argv. + </p> + + <pre> + <os> + <type arch='x86_64'>exe</type> + <init>/bin/systemd</init> + <initarg>--unit</initarg> + <initarg>emergency.service</initarg> + </os> + </pre> + + <h3><a name="elementsSysinfo">SMBIOS System Information</a></h3> <p> diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng index 1f5232e..730f3d8 100644 --- a/docs/schemas/domaincommon.rng +++ b/docs/schemas/domaincommon.rng @@ -378,6 +378,11 @@ <ref name="absFilePath"/> </element> </optional> + <zeroOrMore> + <element name="initarg"> + <text/> + </element> + </zeroOrMore> </interleave> </element> </define> diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c index 3921c0f..6f71e33 100644 --- a/src/conf/domain_conf.c +++ b/src/conf/domain_conf.c @@ -1559,6 +1559,9 @@ void virDomainDefFree(virDomainDefPtr def) VIR_FREE(def->os.arch); VIR_FREE(def->os.machine); VIR_FREE(def->os.init); + for (i = 0 ; def->os.initargv && def->os.initargv[i] ; i++) + VIR_FREE(def->os.initargv[i]); + VIR_FREE(def->os.initargv); VIR_FREE(def->os.kernel); VIR_FREE(def->os.initrd); VIR_FREE(def->os.cmdline); @@ -8188,6 +8191,25 @@ static virDomainDefPtr virDomainDefParseXML(virCapsPtr caps, } } def->os.cmdline = virXPathString("string(./os/cmdline[1])", ctxt); + + if ((n = virXPathNodeSet("./os/initarg", ctxt, &nodes)) < 0) { + goto error; + } + + if (VIR_ALLOC_N(def->os.initargv, n+1) < 0) + goto no_memory; + for (i = 0 ; i < n ; i++) { + if (!nodes[i]->children || + !nodes[i]->children->content) { + virDomainReportError(VIR_ERR_XML_ERROR, "%s", + _("No data supplied for <initarg> element")); + goto error; + } + if (!(def->os.initargv[i] = strdup((const char*)nodes[i]->children->content))) + goto no_memory; + } + def->os.initargv[n] = NULL; + VIR_FREE(nodes); } if (STREQ(def->os.type, "xen") || @@ -12171,6 +12193,7 @@ virDomainDefFormatInternal(virDomainDefPtr def, char uuidstr[VIR_UUID_STRING_BUFLEN]; const char *type = NULL; int n, allones = 1; + int i; bool blkio = false; virCheckFlags(DUMPXML_FLAGS | @@ -12332,7 +12355,6 @@ virDomainDefFormatInternal(virDomainDefPtr def, virBufferAsprintf(buf, " <quota>%lld</quota>\n", def->cputune.quota); if (def->cputune.vcpupin) { - int i; for (i = 0; i < def->cputune.nvcpupin; i++) { virBufferAsprintf(buf, " <vcpupin vcpu='%u' ", def->cputune.vcpupin[i]->vcpuid); @@ -12408,6 +12430,9 @@ virDomainDefFormatInternal(virDomainDefPtr def, virBufferEscapeString(buf, " <init>%s</init>\n", def->os.init); + for (i = 0 ; def->os.initargv && def->os.initargv[i] ; i++) + virBufferEscapeString(buf, " <initarg>%s</initarg>\n", + def->os.initargv[i]); virBufferEscapeString(buf, " <loader>%s</loader>\n", def->os.loader); virBufferEscapeString(buf, " <kernel>%s</kernel>\n", @@ -12462,7 +12487,6 @@ virDomainDefFormatInternal(virDomainDefPtr def, virBufferAddLit(buf, " </os>\n"); if (def->features) { - int i; virBufferAddLit(buf, " <features>\n"); for (i = 0 ; i < VIR_DOMAIN_FEATURE_LAST ; i++) { if (def->features & (1 << i)) { diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h index 10030a4..3fcb026 100644 --- a/src/conf/domain_conf.h +++ b/src/conf/domain_conf.h @@ -1354,6 +1354,7 @@ struct _virDomainOSDef { int bootDevs[VIR_DOMAIN_BOOT_LAST]; int bootmenu; char *init; + char **initargv; char *kernel; char *initrd; char *cmdline; diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c index bb64b60..0755b3c 100644 --- a/src/lxc/lxc_container.c +++ b/src/lxc/lxc_container.c @@ -122,6 +122,9 @@ static virCommandPtr lxcContainerBuildInitCmd(virDomainDefPtr vmDef) cmd = virCommandNew(vmDef->os.init); + if (vmDef->os.initargv && vmDef->os.initargv[0]) + virCommandAddArgSet(cmd, (const char **)vmDef->os.initargv); + virCommandAddEnvString(cmd, "PATH=/bin:/sbin"); virCommandAddEnvString(cmd, "TERM=linux"); virCommandAddEnvString(cmd, "container=lxc-libvirt"); diff --git a/tests/Makefile.am b/tests/Makefile.am index 4755a3e..4a0686f 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -60,6 +60,7 @@ EXTRA_DIST = \ domainsnapshotxml2xmlin \ domainsnapshotxml2xmlout \ interfaceschemadata \ + lxcxml2xmldata \ networkschematest \ networkxml2xmlin \ networkxml2xmlout \ @@ -115,6 +116,10 @@ check_PROGRAMS += qemuxml2argvtest qemuxml2xmltest qemuxmlnstest \ qemumonitortest endif +if WITH_LXC +check_PROGRAMS += lxcxml2xmltest +endif + if WITH_OPENVZ check_PROGRAMS += openvzutilstest endif @@ -245,6 +250,10 @@ TESTS += qemuxml2argvtest qemuxml2xmltest qemuxmlnstest qemuargv2xmltest \ qemumonitortest endif +if WITH_LXC +TESTS += lxcxml2xmltest +endif + if WITH_OPENVZ TESTS += openvzutilstest endif @@ -383,6 +392,18 @@ EXTRA_DIST += qemuxml2argvtest.c qemuxml2xmltest.c qemuargv2xmltest.c \ qemumonitortest.c testutilsqemu.c testutilsqemu.h endif +if WITH_LXC + +lxc_LDADDS = ../src/libvirt_driver_lxc.la + +lxcxml2xmltest_SOURCES = \ + lxcxml2xmltest.c testutilslxc.c testutilslxc.h \ + testutils.c testutils.h +lxcxml2xmltest_LDADD = $(lxc_LDADDS) $(LDADDS) +else +EXTRA_DIST += lxcxml2xmltest.c testutilslxc.c testutilslxc.h +endif + if WITH_OPENVZ openvzutilstest_SOURCES = \ openvzutilstest.c \ diff --git a/tests/lxcxml2xmldata/lxc-systemd.xml b/tests/lxcxml2xmldata/lxc-systemd.xml new file mode 100644 index 0000000..bf239c2 --- /dev/null +++ b/tests/lxcxml2xmldata/lxc-systemd.xml @@ -0,0 +1,30 @@ +<domain type='lxc'> + <name>demo</name> + <uuid>8369f1ac-7e46-e869-4ca5-759d51478066</uuid> + <memory unit='KiB'>500000</memory> + <currentMemory unit='KiB'>500000</currentMemory> + <vcpu>1</vcpu> + <os> + <type arch='x86_64'>exe</type> + <init>/bin/systemd</init> + <initarg>--unit</initarg> + <initarg>emergency.service</initarg> + </os> + <clock offset='utc'/> + <on_poweroff>destroy</on_poweroff> + <on_reboot>restart</on_reboot> + <on_crash>destroy</on_crash> + <devices> + <filesystem type='mount' accessmode='passthrough'> + <source dir='/root/container'/> + <target dir='/'/> + </filesystem> + <filesystem type='mount' accessmode='passthrough'> + <source dir='/home'/> + <target dir='/home'/> + </filesystem> + <console type='pty'> + <target type='lxc' port='0'/> + </console> + </devices> +</domain> diff --git a/tests/lxcxml2xmltest.c b/tests/lxcxml2xmltest.c new file mode 100644 index 0000000..558bd01 --- /dev/null +++ b/tests/lxcxml2xmltest.c @@ -0,0 +1,141 @@ +#include <config.h> + +#include <stdio.h> +#include <stdlib.h> +#include <unistd.h> +#include <string.h> + +#include <sys/types.h> +#include <fcntl.h> + +#ifdef WITH_LXC + +# include "internal.h" +# include "testutils.h" +# include "lxc/lxc_conf.h" +# include "testutilslxc.h" + +static virCapsPtr caps; + +static int +testCompareXMLToXMLFiles(const char *inxml, const char *outxml, bool live) +{ + char *inXmlData = NULL; + char *outXmlData = NULL; + char *actual = NULL; + int ret = -1; + virDomainDefPtr def = NULL; + + if (virtTestLoadFile(inxml, &inXmlData) < 0) + goto fail; + if (virtTestLoadFile(outxml, &outXmlData) < 0) + goto fail; + + if (!(def = virDomainDefParseString(caps, inXmlData, + 1 << VIR_DOMAIN_VIRT_LXC, + live ? 0 : VIR_DOMAIN_XML_INACTIVE))) + goto fail; + + if (!(actual = virDomainDefFormat(def, VIR_DOMAIN_XML_SECURE))) + goto fail; + + if (STRNEQ(outXmlData, actual)) { + virtTestDifference(stderr, outXmlData, actual); + goto fail; + } + + ret = 0; + fail: + VIR_FREE(inXmlData); + VIR_FREE(outXmlData); + VIR_FREE(actual); + virDomainDefFree(def); + return ret; +} + +struct testInfo { + const char *name; + int different; + bool inactive_only; +}; + +static int +testCompareXMLToXMLHelper(const void *data) +{ + const struct testInfo *info = data; + char *xml_in = NULL; + char *xml_out = NULL; + int ret = -1; + + if (virAsprintf(&xml_in, "%s/lxcxml2xmldata/lxc-%s.xml", + abs_srcdir, info->name) < 0 || + virAsprintf(&xml_out, "%s/lxcxml2xmloutdata/lxc-%s.xml", + abs_srcdir, info->name) < 0) + goto cleanup; + + if (info->different) { + ret = testCompareXMLToXMLFiles(xml_in, xml_out, false); + } else { + ret = testCompareXMLToXMLFiles(xml_in, xml_in, false); + } + if (!info->inactive_only) { + if (info->different) { + ret = testCompareXMLToXMLFiles(xml_in, xml_out, true); + } else { + ret = testCompareXMLToXMLFiles(xml_in, xml_in, true); + } + } + +cleanup: + VIR_FREE(xml_in); + VIR_FREE(xml_out); + return ret; +} + + +static int +mymain(void) +{ + int ret = 0; + + if ((caps = testLXCCapsInit()) == NULL) + return (EXIT_FAILURE); + +# define DO_TEST_FULL(name, is_different, inactive) \ + do { \ + const struct testInfo info = {name, is_different, inactive}; \ + if (virtTestRun("LXC XML-2-XML " name, \ + 1, testCompareXMLToXMLHelper, &info) < 0) \ + ret = -1; \ + } while (0) + +# define DO_TEST(name) \ + DO_TEST_FULL(name, 0, false) + +# define DO_TEST_DIFFERENT(name) \ + DO_TEST_FULL(name, 1, false) + + /* Unset or set all envvars here that are copied in lxcdBuildCommandLine + * using ADD_ENV_COPY, otherwise these tests may fail due to unexpected + * values for these envvars */ + setenv("PATH", "/bin", 1); + + DO_TEST("systemd"); + + virCapabilitiesFree(caps); + + return (ret==0 ? EXIT_SUCCESS : EXIT_FAILURE); +} + +VIRT_TEST_MAIN(mymain) + +#else +# include "testutils.h" + +int +main(void) +{ + return EXIT_AM_SKIP; +} + +#endif /* WITH_LXC */ diff --git a/tests/testutilslxc.c b/tests/testutilslxc.c new file mode 100644 index 0000000..e6193af --- /dev/null +++ b/tests/testutilslxc.c @@ -0,0 +1,63 @@ +#include <config.h> +#ifdef WITH_LXC +# include <stdlib.h> + +# include "testutilslxc.h" +# include "testutils.h" +# include "memory.h" +# include "domain_conf.h" + + +static int testLXCDefaultConsoleType(const char *ostype ATTRIBUTE_UNUSED) +{ + return VIR_DOMAIN_CHR_CONSOLE_TARGET_TYPE_LXC; +} + + +virCapsPtr testLXCCapsInit(void) { + virCapsPtr caps; + virCapsGuestPtr guest; + + if ((caps = virCapabilitiesNew("x86_64", + 0, 0)) == NULL) + return NULL; + + caps->defaultConsoleTargetType = testLXCDefaultConsoleType; + + if ((guest = virCapabilitiesAddGuest(caps, "exe", "i686", 32, + "/usr/libexec/libvirt_lxc", NULL, + 0, NULL)) == NULL) + goto error; + + if (!virCapabilitiesAddGuestDomain(guest, "lxc", NULL, NULL, 0, NULL)) + goto error; + + + if ((guest = virCapabilitiesAddGuest(caps, "exe", "x86_64", 64, + "/usr/libexec/libvirt_lxc", NULL, + 0, NULL)) == NULL) + goto error; + + if (!virCapabilitiesAddGuestDomain(guest, "lxc", NULL, NULL, 0, NULL)) + goto error; + + + if (virTestGetDebug()) { + char *caps_str; + + caps_str = virCapabilitiesFormatXML(caps); + if (!caps_str) + goto error; + + fprintf(stderr, "LXC driver capabilities:\n%s", caps_str); + + VIR_FREE(caps_str); + } + + return caps; + +error: + virCapabilitiesFree(caps); + return NULL; +} +#endif diff --git a/tests/testutilslxc.h b/tests/testutilslxc.h new file mode 100644 index 0000000..ee8056f --- /dev/null +++ b/tests/testutilslxc.h @@ -0,0 +1,4 @@ + +#include "capabilities.h" + +virCapsPtr testLXCCapsInit(void); -- 1.7.7.6

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[libvirt] [PATCH] Prefer to use 'qemu-system-i386' over 'qemu'
by Daniel P. Berrange 26 Mar '12

26 Mar '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> For i686 arch we look for the 'qemu' binary, followed by the 'qemu-system-x86_64' binary. This is not good with QEMU 1.0, since the 'qemu' binary was renamed to 'qemu-system-i386' and the 'qemu' name might be reused for another purpose later. Make sure we look for 'qemu-system-i386', then 'qemu-system-x86_64' then the qemu-kvm binary. Only use 'qemu' as a very last resort * src/qemu/qemu_capabilities.c: Prefer qemu-system-i386 --- src/qemu/qemu_capabilities.c | 48 ++++++++++++++++++++++++----------------- 1 files changed, 28 insertions(+), 20 deletions(-) diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c index 0e09d6d..16d9b21 100644 --- a/src/qemu/qemu_capabilities.c +++ b/src/qemu/qemu_capabilities.c @@ -169,7 +169,6 @@ struct qemu_arch_info { int wordsize; const char *machine; const char *binary; - const char *altbinary; const struct qemu_feature_flags *flags; int nflags; }; @@ -189,25 +188,25 @@ static const struct qemu_feature_flags const arch_info_x86_64_flags [] = { /* The archicture tables for supported QEMU archs */ static const struct qemu_arch_info const arch_info_hvm[] = { - { "i686", 32, NULL, "qemu", - "qemu-system-x86_64", arch_info_i686_flags, 4 }, + { "i686", 32, NULL, "qemu-system-i386", + arch_info_i686_flags, 4 }, { "x86_64", 64, NULL, "qemu-system-x86_64", - NULL, arch_info_x86_64_flags, 2 }, - { "arm", 32, NULL, "qemu-system-arm", NULL, NULL, 0 }, - { "microblaze", 32, NULL, "qemu-system-microblaze", NULL, NULL, 0 }, - { "microblazeel", 32, NULL, "qemu-system-microblazeel", NULL, NULL, 0 }, - { "mips", 32, NULL, "qemu-system-mips", NULL, NULL, 0 }, - { "mipsel", 32, NULL, "qemu-system-mipsel", NULL, NULL, 0 }, - { "sparc", 32, NULL, "qemu-system-sparc", NULL, NULL, 0 }, - { "ppc", 32, NULL, "qemu-system-ppc", NULL, NULL, 0 }, - { "ppc64", 64, NULL, "qemu-system-ppc64", NULL, NULL, 0 }, - { "itanium", 64, NULL, "qemu-system-ia64", NULL, NULL, 0 }, - { "s390x", 64, NULL, "qemu-system-s390x", NULL, NULL, 0 }, + arch_info_x86_64_flags, 2 }, + { "arm", 32, NULL, "qemu-system-arm", NULL, 0 }, + { "microblaze", 32, NULL, "qemu-system-microblaze", NULL, 0 }, + { "microblazeel", 32, NULL, "qemu-system-microblazeel", NULL, 0 }, + { "mips", 32, NULL, "qemu-system-mips", NULL, 0 }, + { "mipsel", 32, NULL, "qemu-system-mipsel", NULL, 0 }, + { "sparc", 32, NULL, "qemu-system-sparc", NULL, 0 }, + { "ppc", 32, NULL, "qemu-system-ppc", NULL, 0 }, + { "ppc64", 64, NULL, "qemu-system-ppc64", NULL, 0 }, + { "itanium", 64, NULL, "qemu-system-ia64", NULL, 0 }, + { "s390x", 64, NULL, "qemu-system-s390x", NULL, 0 }, }; static const struct qemu_arch_info const arch_info_xen[] = { - { "i686", 32, "xenner", "xenner", NULL, arch_info_i686_flags, 4 }, - { "x86_64", 64, "xenner", "xenner", NULL, arch_info_x86_64_flags, 2 }, + { "i686", 32, "xenner", "xenner", arch_info_i686_flags, 4 }, + { "x86_64", 64, "xenner", "xenner", arch_info_x86_64_flags, 2 }, }; @@ -643,10 +642,11 @@ qemuCapsInitGuest(virCapsPtr caps, */ binary = virFindFileInPath(info->binary); - if (binary == NULL || !virFileIsExecutable(binary)) { - VIR_FREE(binary); - binary = virFindFileInPath(info->altbinary); - } + /* If i386 binary is missing, we can trivially + * replace it with a qemu-system-x86_64 binary + */ + if (binary == NULL && STREQ(info->binary, "qemu-system-i386")) + binary = virFindFileInPath("qemu-system-x86_64"); /* Can use acceleration for KVM/KQEMU if * - host & guest arches match @@ -668,6 +668,10 @@ qemuCapsInitGuest(virCapsPtr caps, continue; haskvm = 1; + + /* We can use the KVM binary for the TCG case too + * (probably) + */ if (!binary) binary = kvmbin; @@ -679,6 +683,10 @@ qemuCapsInitGuest(virCapsPtr caps, haskqemu = 1; } + /* Another fallback for i386, try the old name now */ + if (binary == NULL && STREQ(info->binary, "qemu-system-i386")) + binary = virFindFileInPath("qemu"); + if (!binary) return 0; -- 1.7.7.6

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[libvirt] Vlan ID - Portgroup
by Daniele Milani 26 Mar '12

26 Mar '12

Hi all, I have the following problem: reading the documentation I wasn't able to understand if it is possible to associate a VlanID to a portgroup. Does anyone know if it is possible and (more important) how does it work? Bests, Daniele Milani

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[libvirt] [PATCH] Detect location fo selinux mount point
by Daniel P. Berrange 26 Mar '12

26 Mar '12

From: "Daniel P. Berrange" <berrange(a)redhat.com> The SELinux mount point moved from /selinux to /sys/fs/selinux when systemd came along. * configure.ac: Probe for SELinux mount point * src/lxc/lxc_container.c: Use SELinux mount point determined by configure.ac --- configure.ac | 19 ++++++++++++++++++- src/lxc/lxc_container.c | 6 ++++-- 2 files changed, 22 insertions(+), 3 deletions(-) diff --git a/configure.ac b/configure.ac index d624ef2..c1f9f45 100644 --- a/configure.ac +++ b/configure.ac @@ -1238,6 +1238,10 @@ AC_ARG_WITH([selinux], AC_HELP_STRING([--with-selinux], [use SELinux to manage security @<:@default=check@:>@]), [], [with_selinux=check]) +AC_ARG_WITH([selinux_mount], + AC_HELP_STRING([--with-selinux-mount], [set SELinux mount point @<:@default=check@:>@]), + [], + [with_selinux_mount=check]) SELINUX_CFLAGS= SELINUX_LIBS= @@ -1261,7 +1265,20 @@ if test "$with_selinux" != "no"; then LIBS="$old_libs" fi if test "$with_selinux" = "yes"; then + AC_MSG_CHECKING([SELinux mount point]) + if test "$with_selinux_mount" = "check" || test -z "$with_selinux_mount"; then + if test -d /sys/fs/selinux ; then + SELINUX_MOUNT=/sys/fs/selinux + else + SELINUX_MOUNT=/selinux + fi + else + SELINUX_MOUNT=$with_selinux_mount + fi + AC_MSG_RESULT([$SELINUX_MOUNT]) + SELINUX_LIBS="-lselinux" + AC_DEFINE_UNQUOTED([SELINUX_MOUNT], ["$SELINUX_MOUNT"], [SELinux mount point]) AC_DEFINE_UNQUOTED([HAVE_SELINUX], 1, [whether basic SELinux functionality is available]) dnl We prefer to use <selinux/label.h> and selabel_open, but can fall dnl back to matchpathcon for the sake of RHEL 5's version of libselinux. @@ -2640,7 +2657,7 @@ AC_MSG_NOTICE([ Disk: $with_storage_disk]) AC_MSG_NOTICE([]) AC_MSG_NOTICE([Security Drivers]) AC_MSG_NOTICE([]) -AC_MSG_NOTICE([ SELinux: $with_secdriver_selinux]) +AC_MSG_NOTICE([ SELinux: $with_secdriver_selinux ($SELINUX_MOUNT)]) AC_MSG_NOTICE([AppArmor: $with_secdriver_apparmor]) AC_MSG_NOTICE([]) AC_MSG_NOTICE([Driver Loadable Modules]) diff --git a/src/lxc/lxc_container.c b/src/lxc/lxc_container.c index 267fbfb..bb64b60 100644 --- a/src/lxc/lxc_container.c +++ b/src/lxc/lxc_container.c @@ -444,8 +444,10 @@ static int lxcContainerMountBasicFS(const char *srcprefix, bool pivotRoot) { false, "/proc/sys", "/proc/sys", NULL, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY }, { true, "/sys", "/sys", NULL, NULL, MS_BIND }, { true, "/sys", "/sys", NULL, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY }, - { true, "/selinux", "/selinux", NULL, NULL, MS_BIND }, - { true, "/selinux", "/selinux", NULL, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY }, +#if HAVE_SELINUX + { true, SELINUX_MOUNT, SELINUX_MOUNT, NULL, NULL, MS_BIND }, + { true, SELINUX_MOUNT, SELINUX_MOUNT, NULL, NULL, MS_BIND|MS_REMOUNT|MS_RDONLY }, +#endif }; int i, rc = -1; char *opts = NULL; -- 1.7.7.6

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[libvirt] libvirt: xen: Shutdown detection fixes
by Stefan Bader 26 Mar '12

26 Mar '12

The issue is easy to observe when using virt-manager as a frontend. Its main window seems to open connections for the up/down main display once and then only repeats DomainGetInfo on the same connection to check whether the instance is up or shut down. The initial open on the connection sets the domain id to -1 for inactive managed domains. And once running, the hypervisor driver returns the status. But after shutdown, the domain cannot be found by the hypervisor driver and the domain info is obtained by the xend driver. However, that expects the domain id to be -1 for inactive domains. This is not true (anymore). In testing I found that domain/status seems to be always present and better suited to check whether a domain is running or not (0 for shutdown and 2 for running, there are probably other values, too). Beside the change, which does fix this problem, the question is whether there should be a mechanism that resets domain->id to -1 when the instance is found to be shut down. And if that should happen, should it be done by any sub-driver or by the unified driver. The second problem I observed when I shut down an instance from the vnc console provided by virt-manager. As soon as the instance was down, the log produced internal errors about every second. Found this again, to be related to the unified driver approach. The call that causes the many error messages is GetVcpus. While the instance is up, the hypervisor driver returns those. But after shutdown, the domain cannot be found by that driver. The xend driver works, though. So what happens is that the hypervisor driver logs an internal error but the call succeeds because the xend driver returns successful. This generally opens the question whether a sub-driver should log any errors (at least not on error level, maybe debug)? The second patch only quiets down the one message I saw repeated that often. There are some other errors logged without any obvious problems interacting with the instances, but those are by far less often. -Stefan Please cc: me on replies as I am (yeah still) not subscribed to this m-l. Thanks.

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[libvirt] [PATCH 1/2] build: drop obsolete qparams test
by Eric Blake 26 Mar '12

26 Mar '12

Otherwise, 'make check' breaks since commit bc1ff160 deleted qparams.h. A later patch will ensure that viruri takes over what qparams used to do. * tests/qparamtest.c (mymain): Delete, now that we have viruri. * tests/Makefile.am (check_PROGRAMS, TESTS, qparamtest_SOURCES): Delete old test. * .gitignore: Add recent test additions. --- Pushing this under the build-breaker rule. .gitignore | 3 +++ tests/Makefile.am | 7 +------ 2 files changed, 4 insertions(+), 6 deletions(-) diff --git a/.gitignore b/.gitignore index b35e863..2f27ff4 100644 --- a/.gitignore +++ b/.gitignore @@ -139,11 +139,14 @@ /tests/ssh /tests/statstest /tests/utiltest +/tests/virauthconfigtest /tests/virbuftest /tests/virhashtest +/tests/virkeyfiletest /tests/virnet*test /tests/virshtest /tests/virtimetest +/tests/viruritest /tests/vmx2xmltest /tests/xencapstest /tests/xmconfigtest diff --git a/tests/Makefile.am b/tests/Makefile.am index 0e5ca39..4755a3e 100644 --- a/tests/Makefile.am +++ b/tests/Makefile.am @@ -92,7 +92,7 @@ EXTRA_DIST = \ .valgrind.supp check_PROGRAMS = virshtest conftest sockettest \ - nodeinfotest qparamtest virbuftest \ + nodeinfotest virbuftest \ commandtest commandhelper seclabeltest \ virhashtest virnetmessagetest virnetsockettest ssh \ utiltest virnettlscontexttest shunloadtest \ @@ -210,7 +210,6 @@ EXTRA_DIST += $(test_scripts) TESTS = virshtest \ nodeinfotest \ - qparamtest \ virbuftest \ sockettest \ commandtest \ @@ -529,10 +528,6 @@ seclabeltest_SOURCES = \ seclabeltest.c seclabeltest_LDADD = ../src/libvirt_driver_security.la $(LDADDS) -qparamtest_SOURCES = \ - qparamtest.c testutils.h testutils.c -qparamtest_LDADD = $(LDADDS) - virbuftest_SOURCES = \ virbuftest.c testutils.h testutils.c virbuftest_LDADD = $(LDADDS) -- 1.7.7.6

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