[libvirt] [PATCH] libxl: add support for specifying clock offset and adjustment
Jim Fehlig
jfehlig at suse.com
Wed Feb 21 00:28:57 UTC 2018
libxl supports setting the domain real time clock to local time or
UTC via the localtime field of libxl_domain_build_info. Adjustment
of the clock is also supported via the rtc_timeoffset field. The
libvirt libxl driver has never supported these settings, instead
relying on libxl's default of a UTC real time clock with adjustment
set to 0.
There is at least one user that would like the ability to change
the defaults
https://www.redhat.com/archives/libvirt-users/2018-February/msg00059.html
Add support for specifying a local time clock and for specifying an
adjustment for both local time and UTC clocks. Add a test case to
verify the XML to libxl_domain_config conversion.
Local time clock and clock adjustment is already supported by the
XML <-> xl.cfg converter. What is missing is an explicit test for
the conversion. There are plenty of existing tests that all use UTC
with 0 adjustment. Hijack test-fullvirt-tsc-timer to test a local
time clock with 1 hour adjustment.
Signed-off-by: Jim Fehlig <jfehlig at suse.com>
---
src/libxl/libxl_conf.c | 35 +++++++--
.../libxlxml2domconfigdata/variable-clock-hvm.json | 91 ++++++++++++++++++++++
.../libxlxml2domconfigdata/variable-clock-hvm.xml | 36 +++++++++
tests/libxlxml2domconfigtest.c | 1 +
tests/xlconfigdata/test-fullvirt-tsc-timer.cfg | 4 +-
tests/xlconfigdata/test-fullvirt-tsc-timer.xml | 2 +-
6 files changed, 160 insertions(+), 9 deletions(-)
diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
index 0c5de344d..39ae709c7 100644
--- a/src/libxl/libxl_conf.c
+++ b/src/libxl/libxl_conf.c
@@ -274,6 +274,7 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
virCapsPtr caps,
libxl_domain_config *d_config)
{
+ virDomainClockDef clock = def->clock;
libxl_domain_build_info *b_info = &d_config->b_info;
int hvm = def->os.type == VIR_DOMAIN_OSTYPE_HVM;
size_t i;
@@ -293,10 +294,32 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
for (i = 0; i < virDomainDefGetVcpus(def); i++)
libxl_bitmap_set((&b_info->avail_vcpus), i);
- for (i = 0; i < def->clock.ntimers; i++) {
- switch ((virDomainTimerNameType) def->clock.timers[i]->name) {
+ switch (clock.offset) {
+ case VIR_DOMAIN_CLOCK_OFFSET_VARIABLE:
+ if (clock.data.variable.basis == VIR_DOMAIN_CLOCK_BASIS_LOCALTIME)
+ libxl_defbool_set(&b_info->localtime, true);
+ b_info->rtc_timeoffset = clock.data.variable.adjustment;
+ break;
+
+ case VIR_DOMAIN_CLOCK_OFFSET_LOCALTIME:
+ libxl_defbool_set(&b_info->localtime, true);
+ break;
+
+ /* Nothing to do since UTC is the default in libxl */
+ case VIR_DOMAIN_CLOCK_OFFSET_UTC:
+ break;
+
+ default:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unsupported clock offset '%s'"),
+ virDomainClockOffsetTypeToString(clock.offset));
+ return -1;
+ }
+
+ for (i = 0; i < clock.ntimers; i++) {
+ switch ((virDomainTimerNameType) clock.timers[i]->name) {
case VIR_DOMAIN_TIMER_NAME_TSC:
- switch (def->clock.timers[i]->mode) {
+ switch (clock.timers[i]->mode) {
case VIR_DOMAIN_TIMER_MODE_NATIVE:
b_info->tsc_mode = LIBXL_TSC_MODE_NATIVE;
break;
@@ -315,10 +338,10 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
if (!hvm) {
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported timer type (name) '%s'"),
- virDomainTimerNameTypeToString(def->clock.timers[i]->name));
+ virDomainTimerNameTypeToString(clock.timers[i]->name));
return -1;
}
- if (def->clock.timers[i]->present == 1)
+ if (clock.timers[i]->present == 1)
libxl_defbool_set(&b_info->u.hvm.hpet, 1);
break;
@@ -329,7 +352,7 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
case VIR_DOMAIN_TIMER_NAME_PIT:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
_("unsupported timer type (name) '%s'"),
- virDomainTimerNameTypeToString(def->clock.timers[i]->name));
+ virDomainTimerNameTypeToString(clock.timers[i]->name));
return -1;
case VIR_DOMAIN_TIMER_NAME_LAST:
diff --git a/tests/libxlxml2domconfigdata/variable-clock-hvm.json b/tests/libxlxml2domconfigdata/variable-clock-hvm.json
new file mode 100644
index 000000000..49d0a4330
--- /dev/null
+++ b/tests/libxlxml2domconfigdata/variable-clock-hvm.json
@@ -0,0 +1,91 @@
+{
+ "c_info": {
+ "type": "hvm",
+ "name": "test-hvm",
+ "uuid": "2147d599-9cc6-c0dc-92ab-4064b5446e9b"
+ },
+ "b_info": {
+ "max_vcpus": 4,
+ "avail_vcpus": [
+ 0,
+ 1,
+ 2,
+ 3
+ ],
+ "max_memkb": 1048576,
+ "target_memkb": 1048576,
+ "video_memkb": 8192,
+ "shadow_memkb": 12288,
+ "rtc_timeoffset": 3600,
+ "localtime": "True",
+ "device_model_version": "qemu_xen",
+ "device_model": "/bin/true",
+ "sched_params": {
+ "weight": 1000
+ },
+ "type.hvm": {
+ "pae": "True",
+ "apic": "True",
+ "acpi": "True",
+ "vga": {
+ "kind": "cirrus"
+ },
+ "vnc": {
+ "enable": "True",
+ "listen": "0.0.0.0",
+ "findunused": "False"
+ },
+ "sdl": {
+ "enable": "False"
+ },
+ "spice": {
+
+ },
+ "boot": "c",
+ "rdm": {
+
+ }
+ },
+ "arch_arm": {
+
+ }
+ },
+ "disks": [
+ {
+ "pdev_path": "/var/lib/xen/images/test-hvm.img",
+ "vdev": "hda",
+ "backend": "qdisk",
+ "format": "raw",
+ "removable": 1,
+ "readwrite": 1
+ }
+ ],
+ "nics": [
+ {
+ "devid": 0,
+ "mac": "00:16:3e:66:12:b4",
+ "bridge": "br0",
+ "script": "/etc/xen/scripts/vif-bridge",
+ "nictype": "vif_ioemu"
+ }
+ ],
+ "vfbs": [
+ {
+ "devid": -1,
+ "vnc": {
+ "enable": "True",
+ "listen": "0.0.0.0",
+ "findunused": "False"
+ },
+ "sdl": {
+ "enable": "False"
+ }
+ }
+ ],
+ "vkbs": [
+ {
+ "devid": -1
+ }
+ ],
+ "on_reboot": "restart"
+}
diff --git a/tests/libxlxml2domconfigdata/variable-clock-hvm.xml b/tests/libxlxml2domconfigdata/variable-clock-hvm.xml
new file mode 100644
index 000000000..608788779
--- /dev/null
+++ b/tests/libxlxml2domconfigdata/variable-clock-hvm.xml
@@ -0,0 +1,36 @@
+<domain type='xen'>
+ <name>test-hvm</name>
+ <description>None</description>
+ <uuid>2147d599-9cc6-c0dc-92ab-4064b5446e9b</uuid>
+ <memory>1048576</memory>
+ <currentMemory>1048576</currentMemory>
+ <vcpu>4</vcpu>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <clock offset='localtime' adjustment='3600'/>
+ <os>
+ <type>hvm</type>
+ <loader>/usr/lib/xen/boot/hvmloader</loader>
+ <boot dev='hd'/>
+ </os>
+ <features>
+ <apic/>
+ <acpi/>
+ <pae/>
+ </features>
+ <devices>
+ <emulator>/bin/true</emulator>
+ <disk type='file' device='disk'>
+ <driver name='qemu'/>
+ <source file='/var/lib/xen/images/test-hvm.img'/>
+ <target dev='hda'/>
+ </disk>
+ <interface type='bridge'>
+ <source bridge='br0'/>
+ <mac address='00:16:3e:66:12:b4'/>
+ <script path='/etc/xen/scripts/vif-bridge'/>
+ </interface>
+ <graphics type='vnc' port='-1' autoport='yes' listen='0.0.0.0'/>
+ </devices>
+</domain>
diff --git a/tests/libxlxml2domconfigtest.c b/tests/libxlxml2domconfigtest.c
index bd4c3af5a..be3e34944 100644
--- a/tests/libxlxml2domconfigtest.c
+++ b/tests/libxlxml2domconfigtest.c
@@ -188,6 +188,7 @@ mymain(void)
DO_TEST("basic-pv");
DO_TEST("basic-hvm");
+ DO_TEST("variable-clock-hvm");
DO_TEST("moredevs-hvm");
DO_TEST("vnuma-hvm");
DO_TEST("multiple-ip");
diff --git a/tests/xlconfigdata/test-fullvirt-tsc-timer.cfg b/tests/xlconfigdata/test-fullvirt-tsc-timer.cfg
index 609c0fd5a..587d3461f 100644
--- a/tests/xlconfigdata/test-fullvirt-tsc-timer.cfg
+++ b/tests/xlconfigdata/test-fullvirt-tsc-timer.cfg
@@ -9,8 +9,8 @@ apic = 1
hap = 0
viridian = 0
tsc_mode = "native"
-rtc_timeoffset = 0
-localtime = 0
+rtc_timeoffset = 3600
+localtime = 1
on_poweroff = "destroy"
on_reboot = "restart"
on_crash = "restart"
diff --git a/tests/xlconfigdata/test-fullvirt-tsc-timer.xml b/tests/xlconfigdata/test-fullvirt-tsc-timer.xml
index bedbe8e0e..0816f96f3 100644
--- a/tests/xlconfigdata/test-fullvirt-tsc-timer.xml
+++ b/tests/xlconfigdata/test-fullvirt-tsc-timer.xml
@@ -15,7 +15,7 @@
<pae/>
<hap state='off'/>
</features>
- <clock offset='variable' adjustment='0' basis='utc'>
+ <clock offset='variable' adjustment='3600' basis='localtime'>
<timer name='tsc' present='yes' mode='native'/>
</clock>
<on_poweroff>destroy</on_poweroff>
--
2.16.1
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