[libvirt] [PATCH V3 5/6] xenconfig: support bios=ovmf xl.cfg
Michal Privoznik
mprivozn at redhat.com
Tue Jun 14 07:38:29 UTC 2016
On 13.06.2016 16:21, Jim Fehlig wrote:
> 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
>
Ah. Okay then. It's a bit unfortunate but I can live with that.
Michal
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