On 02/21/2018 02:20 AM, Daniel P. Berrangé wrote:
On Tue, Feb 20, 2018 at 05:28:57PM -0700, Jim Fehlig wrote:
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@xxxxxxxx>
---
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) {
Can you cast that to virDomainClockOffset to get enum checking
+ 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;
+
Put case VIR_DOMAIN_CLOCK_OFFSET_LAST: right here
+ default:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unsupported clock offset '%s'"),
+ virDomainClockOffsetTypeToString(clock.offset));
You shouldn't use the ToString macros in a default: or _LAST: case
because it will return empty string for invalid values. Just print out
the decimal value, and use the word "Unexpected" rather than "unsupported"
+ return -1;
+ }
Assuming those simple tweaks are done, then
Reviewed-by: Daniel P. Berrangé <berrange@xxxxxxxxxx>
Thanks. I also had to account for the unsupported case
VIR_DOMAIN_CLOCK_OFFSET_TIMEZONE. Along with your suggestions, I squashed in the
below diff and pushed.
Regards,
Jim
diff --git a/src/libxl/libxl_conf.c b/src/libxl/libxl_conf.c
index 95cdee4fa..01d9b82da 100644
--- a/src/libxl/libxl_conf.c
+++ b/src/libxl/libxl_conf.c
@@ -309,6 +309,12 @@ libxlMakeDomBuildInfo(virDomainDefPtr def,
case VIR_DOMAIN_CLOCK_OFFSET_UTC:
break;
+ case VIR_DOMAIN_CLOCK_OFFSET_TIMEZONE:
+ virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
+ _("unsupported clock offset '%s'"),
+ virDomainClockOffsetTypeToString(clock.offset));
+ return -1;
+
case VIR_DOMAIN_CLOCK_OFFSET_LAST:
default:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
--
libvir-list mailing list
libvir-list@xxxxxxxxxx
https://www.redhat.com/mailman/listinfo/libvir-list
