[libvirt] [PATCH V3 5/6] xenconfig: support bios=ovmf xl.cfg
Jim Fehlig
jfehlig at suse.com
Mon Jun 13 14:21:53 UTC 2016
On 06/13/2016 03:33 AM, Michal Privoznik wrote:
> On 11.06.2016 00:34, Jim Fehlig wrote:
>> Add support to xenconfig for conversion of xl.cfg(5) bios config
>> to/from libvirt domXml <loader> config. SeaBIOS is the default
>> for HVM guests using upstream QEMU. ROMBIOS is the default when
>> using the old qemu-dm. This patch allows specifying OVMF as an
>> alternate firmware.
>>
>> Example xl.cfg:
>> bios = "ovmf"
>>
>> Example domXML:
>> <os>
>> ...
>> <loader readonly='yes' type='pflash'>/usr/lib/xen/boot/ovmf.bin</loader>
>> </os>
>>
>> Note that currently Xen does not support a separate nvram for
>> non-volatile variables.
>>
>> Signed-off-by: Jim Fehlig <jfehlig at suse.com>
>> ---
>>
>> V3:
>> - Rework test code to account for discovery of LIBXL_FIRMWARE_DIR
>> at build time
>> - Drop code that relies on Xen patches that are not yet committed
>> to xen.git master
>>
>> src/Makefile.am | 2 +-
>> src/xenconfig/xen_xl.c | 37 ++++++++++---
>> tests/testutils.c | 16 ++++++
>> tests/testutils.h | 2 +
>> tests/xlconfigdata/test-fullvirt-ovmf.cfg | 26 +++++++++
>> tests/xlconfigdata/test-fullvirt-ovmf.xml | 58 ++++++++++++++++++++
>> tests/xlconfigtest.c | 90 +++++++++++++++++++++++--------
>> 7 files changed, 202 insertions(+), 29 deletions(-)
>>
>> diff --git a/src/Makefile.am b/src/Makefile.am
>> index 7004d14..1aff57d 100644
>> --- a/src/Makefile.am
>> +++ b/src/Makefile.am
>> @@ -1151,7 +1151,7 @@ noinst_LTLIBRARIES += libvirt_xenconfig.la
>> libvirt_la_BUILT_LIBADD += libvirt_xenconfig.la
>> libvirt_xenconfig_la_LIBADD = $(LIBXL_LIBS)
>> libvirt_xenconfig_la_CFLAGS = \
>> - -I$(srcdir)/conf $(AM_CFLAGS)
>> + -I$(srcdir)/conf -I$(srcdir)/libxl $(AM_CFLAGS)
>> libvirt_xenconfig_la_SOURCES = $(XENCONFIG_SOURCES)
>> endif WITH_XENCONFIG
>>
>> diff --git a/src/xenconfig/xen_xl.c b/src/xenconfig/xen_xl.c
>> index 9b8306f..dc54a73 100644
>> --- a/src/xenconfig/xen_xl.c
>> +++ b/src/xenconfig/xen_xl.c
>> @@ -33,6 +33,7 @@
>> #include "virstring.h"
>> #include "virstoragefile.h"
>> #include "xen_xl.h"
>> +#include "libxl_capabilities.h"
>>
>> #define VIR_FROM_THIS VIR_FROM_XENXL
>>
>> @@ -103,15 +104,31 @@ xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
>> size_t i;
>>
>> if (def->os.type == VIR_DOMAIN_OSTYPE_HVM) {
>> + const char *bios;
>> const char *boot;
>>
>> - for (i = 0; i < caps->nguests; i++) {
>> - if (caps->guests[i]->ostype == VIR_DOMAIN_OSTYPE_HVM &&
>> - caps->guests[i]->arch.id == def->os.arch) {
>> - if (VIR_ALLOC(def->os.loader) < 0 ||
>> - VIR_STRDUP(def->os.loader->path,
>> - caps->guests[i]->arch.defaultInfo.loader) < 0)
>> - return -1;
>> + if (xenConfigGetString(conf, "bios", &bios, NULL) < 0)
>> + return -1;
>> +
>> + if (bios && STREQ(bios, "ovmf")) {
>> + if (VIR_ALLOC(def->os.loader) < 0)
>> + return -1;
>> +
>> + def->os.loader->type = VIR_DOMAIN_LOADER_TYPE_PFLASH;
>> + def->os.loader->readonly = VIR_TRISTATE_BOOL_YES;
>> +
>> + if (VIR_STRDUP(def->os.loader->path,
>> + LIBXL_FIRMWARE_DIR "/ovmf.bin") < 0)
>> + return -1;
>> + } else {
>> + for (i = 0; i < caps->nguests; i++) {
>> + if (caps->guests[i]->ostype == VIR_DOMAIN_OSTYPE_HVM &&
>> + caps->guests[i]->arch.id == def->os.arch) {
>> + if (VIR_ALLOC(def->os.loader) < 0 ||
>> + VIR_STRDUP(def->os.loader->path,
>> + caps->guests[i]->arch.defaultInfo.loader) < 0)
>> + return -1;
>> + }
>> }
>> }
>>
>> @@ -535,6 +552,12 @@ xenFormatXLOS(virConfPtr conf, virDomainDefPtr def)
>> if (xenConfigSetString(conf, "builder", "hvm") < 0)
>> return -1;
>>
>> + if (def->os.loader &&
>> + def->os.loader->type == VIR_DOMAIN_LOADER_TYPE_PFLASH) {
>> + if (xenConfigSetString(conf, "bios", "ovmf") < 0)
>> + return -1;
>> + }
>> +
>> #ifdef LIBXL_HAVE_BUILDINFO_KERNEL
>> if (def->os.kernel &&
>> xenConfigSetString(conf, "kernel", def->os.kernel) < 0)
>> diff --git a/tests/testutils.c b/tests/testutils.c
>> index e2dd2fe..54adab2 100644
>> --- a/tests/testutils.c
>> +++ b/tests/testutils.c
>> @@ -718,6 +718,22 @@ virTestCompareToFile(const char *strcontent,
>> return ret;
>> }
>>
>> +/*
>> + * @param strcontent: String input content
>> + * @param strsrc: String source to compare strcontent against
>> + */
>> +int
>> +virTestCompareToString(const char *strcontent,
>> + const char *strsrc)
>> +{
>> + if (STRNEQ_NULLABLE(strcontent, strsrc)) {
>> + virTestDifference(stderr, strcontent, strsrc);
>> + return -1;
>> + }
>> +
>> + return 0;
>> +}
>> +
>> static void
>> virTestErrorFuncQuiet(void *data ATTRIBUTE_UNUSED,
>> virErrorPtr err ATTRIBUTE_UNUSED)
>> diff --git a/tests/testutils.h b/tests/testutils.h
>> index e3881e8..c7c641c 100644
>> --- a/tests/testutils.h
>> +++ b/tests/testutils.h
>> @@ -75,6 +75,8 @@ int virTestDifferenceBin(FILE *stream,
>> size_t length);
>> int virTestCompareToFile(const char *strcontent,
>> const char *filename);
>> +int virTestCompareToString(const char *strcontent,
>> + const char *strsrc);
>>
>> unsigned int virTestGetDebug(void);
>> unsigned int virTestGetVerbose(void);
>> diff --git a/tests/xlconfigdata/test-fullvirt-ovmf.cfg b/tests/xlconfigdata/test-fullvirt-ovmf.cfg
>> new file mode 100644
>> index 0000000..b08e7fd
>> --- /dev/null
>> +++ b/tests/xlconfigdata/test-fullvirt-ovmf.cfg
>> @@ -0,0 +1,26 @@
>> +name = "XenGuest2"
>> +uuid = "c7a5fdb2-cdaf-9455-926a-d65c16db1809"
>> +maxmem = 579
>> +memory = 394
>> +vcpus = 1
>> +pae = 1
>> +acpi = 1
>> +apic = 1
>> +viridian = 0
>> +rtc_timeoffset = 0
>> +localtime = 0
>> +on_poweroff = "destroy"
>> +on_reboot = "restart"
>> +on_crash = "restart"
>> +device_model = "/usr/lib/xen/bin/qemu-system-i386"
>> +sdl = 0
>> +vnc = 1
>> +vncunused = 1
>> +vnclisten = "127.0.0.1"
>> +vif = [ "mac=00:16:3e:66:92:9c,bridge=xenbr1,script=vif-bridge,model=e1000" ]
>> +parallel = "none"
>> +serial = "none"
>> +builder = "hvm"
>> +bios = "ovmf"
>> +boot = "d"
>> +disk = [ "format=raw,vdev=hda,access=rw,backendtype=phy,target=/dev/HostVG/XenGuest2", "format=qcow2,vdev=hdb,access=rw,backendtype=qdisk,target=/var/lib/libvirt/images/XenGuest2-home", "format=raw,vdev=hdc,access=ro,backendtype=qdisk,devtype=cdrom,target=/root/boot.iso" ]
>> diff --git a/tests/xlconfigdata/test-fullvirt-ovmf.xml b/tests/xlconfigdata/test-fullvirt-ovmf.xml
>> new file mode 100644
>> index 0000000..ca902e6
>> --- /dev/null
>> +++ b/tests/xlconfigdata/test-fullvirt-ovmf.xml
>> @@ -0,0 +1,58 @@
>> +<domain type='xen'>
>> + <name>XenGuest2</name>
>> + <uuid>c7a5fdb2-cdaf-9455-926a-d65c16db1809</uuid>
>> + <memory unit='KiB'>592896</memory>
>> + <currentMemory unit='KiB'>403456</currentMemory>
>> + <vcpu placement='static'>1</vcpu>
>> + <os>
>> + <type arch='x86_64' machine='xenfv'>hvm</type>
>> + <loader readonly='yes' type='pflash'>/LIBXL_FIRMWARE_DIR/ovmf.bin</loader>
>> + <boot dev='cdrom'/>
>> + </os>
>> + <features>
>> + <acpi/>
>> + <apic/>
>> + <pae/>
>> + </features>
>> + <clock offset='variable' adjustment='0' basis='utc'/>
>> + <on_poweroff>destroy</on_poweroff>
>> + <on_reboot>restart</on_reboot>
>> + <on_crash>restart</on_crash>
>> + <devices>
>> + <emulator>/usr/lib/xen/bin/qemu-system-i386</emulator>
>> + <disk type='block' device='disk'>
>> + <driver name='phy' type='raw'/>
>> + <source dev='/dev/HostVG/XenGuest2'/>
>> + <target dev='hda' bus='ide'/>
>> + <address type='drive' controller='0' bus='0' target='0' unit='0'/>
>> + </disk>
>> + <disk type='file' device='disk'>
>> + <driver name='qemu' type='qcow2'/>
>> + <source file='/var/lib/libvirt/images/XenGuest2-home'/>
>> + <target dev='hdb' bus='ide'/>
>> + <address type='drive' controller='0' bus='0' target='0' unit='1'/>
>> + </disk>
>> + <disk type='file' device='cdrom'>
>> + <driver name='qemu' type='raw'/>
>> + <source file='/root/boot.iso'/>
>> + <target dev='hdc' bus='ide'/>
>> + <readonly/>
>> + <address type='drive' controller='0' bus='1' target='0' unit='0'/>
>> + </disk>
>> + <controller type='ide' index='0'/>
>> + <interface type='bridge'>
>> + <mac address='00:16:3e:66:92:9c'/>
>> + <source bridge='xenbr1'/>
>> + <script path='vif-bridge'/>
>> + <model type='e1000'/>
>> + </interface>
>> + <input type='mouse' bus='ps2'/>
>> + <input type='keyboard' bus='ps2'/>
>> + <graphics type='vnc' port='-1' autoport='yes' listen='127.0.0.1'>
>> + <listen type='address' address='127.0.0.1'/>
>> + </graphics>
>> + <video>
>> + <model type='cirrus' vram='8192' heads='1' primary='yes'/>
>> + </video>
>> + </devices>
>> +</domain>
>> diff --git a/tests/xlconfigtest.c b/tests/xlconfigtest.c
>> index 62bb144..55c756c 100644
>> --- a/tests/xlconfigtest.c
>> +++ b/tests/xlconfigtest.c
>> @@ -43,12 +43,33 @@
>> static virCapsPtr caps;
>> static virDomainXMLOptionPtr xmlopt;
>>
>> +
>> +/*
>> + * This function provides a mechanism to replace variables in test
>> + * data files whose values are discovered at built time.
>> + */
>> +static char *
>> +testReplaceVarsXML(const char *xml)
>> +{
>> + char *xmlcfgData;
>> + char *replacedXML;
>> +
>> + if (virTestLoadFile(xml, &xmlcfgData) < 0)
>> + return NULL;
>> +
>> + replacedXML = virStringReplace(xmlcfgData, "/LIBXL_FIRMWARE_DIR",
>> + LIBXL_FIRMWARE_DIR);
> I think we want to replace just LIBXL_FW_DIR without the leading slash.
> That's what would have been done if we had .in files anyway.
If only LIBXL_FIRMWARE_DIR is replaced, the test fails since there are two
leading slashes instead of the expected one. If I remove the leading slash from
the test data fail, then virschematest fails on the test data file with
XML document failed to validate against schema: Unable to validate doc against
/home/jfehlig/virt/upstream/libvirt/docs/schemas/domain.rng
Extra element os in interleave
This lame approach fixed both problems :-).
Regards,
Jim
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