[PATCH] conf: add realtime parameter for rtc
gongwei
gongwei at smartx.com
Tue Feb 2 14:20:46 UTC 2021
Pass the parameter clock rt to qemu to ensure that the
virtual machine is not synchronized with the host time
Signed-off-by: gongwei <gongwei at smartx.com>
---
docs/formatdomain.rst | 2 +-
docs/schemas/domaincommon.rng | 1 +
src/conf/domain_conf.c | 1 +
src/conf/domain_conf.h | 1 +
src/qemu/qemu_command.c | 3 +++
src/qemu/qemu_validate.c | 1 +
tests/qemuxml2argvdata/clock-realtime.args | 30 +++++++++++++++++++++++
tests/qemuxml2argvdata/clock-realtime.xml | 31 +++++++++++++++++++++++
tests/qemuxml2xmloutdata/clock-realtime.xml | 38 +++++++++++++++++++++++++++++
9 files changed, 107 insertions(+), 1 deletion(-)
create mode 100644 tests/qemuxml2argvdata/clock-realtime.args
create mode 100644 tests/qemuxml2argvdata/clock-realtime.xml
create mode 100644 tests/qemuxml2xmloutdata/clock-realtime.xml
diff --git a/docs/formatdomain.rst b/docs/formatdomain.rst
index c738078..75cc60b 100644
--- a/docs/formatdomain.rst
+++ b/docs/formatdomain.rst
@@ -2059,7 +2059,7 @@ Windows, however, expects it to be in so called 'localtime'.
feature for guests running the Microsoft Windows operating system.
``track``
The ``track`` attribute specifies what the timer tracks, and can be
- "boot", "guest", or "wall". Only valid for ``name="rtc"`` or
+ "boot", "guest", or "wall", or "realtime". Only valid for ``name="rtc"`` or
``name="platform"``.
``tickpolicy``
The ``tickpolicy`` attribute determines what happens when QEMU misses a
diff --git a/docs/schemas/domaincommon.rng b/docs/schemas/domaincommon.rng
index a4bddcf..d882f90 100644
--- a/docs/schemas/domaincommon.rng
+++ b/docs/schemas/domaincommon.rng
@@ -1209,6 +1209,7 @@
<value>boot</value>
<value>guest</value>
<value>wall</value>
+ <value>realtime</value>
</choice>
</attribute>
</optional>
diff --git a/src/conf/domain_conf.c b/src/conf/domain_conf.c
index dab4f10..c19124d 100644
--- a/src/conf/domain_conf.c
+++ b/src/conf/domain_conf.c
@@ -1106,6 +1106,7 @@ VIR_ENUM_IMPL(virDomainTimerTrack,
"boot",
"guest",
"wall",
+ "realtime",
);
VIR_ENUM_IMPL(virDomainTimerTickpolicy,
diff --git a/src/conf/domain_conf.h b/src/conf/domain_conf.h
index 95ad052..e73b69c 100644
--- a/src/conf/domain_conf.h
+++ b/src/conf/domain_conf.h
@@ -2160,6 +2160,7 @@ typedef enum {
VIR_DOMAIN_TIMER_TRACK_BOOT = 0,
VIR_DOMAIN_TIMER_TRACK_GUEST,
VIR_DOMAIN_TIMER_TRACK_WALL,
+ VIR_DOMAIN_TIMER_TRACK_REALTIME,
VIR_DOMAIN_TIMER_TRACK_LAST
} virDomainTimerTrackType;
diff --git a/src/qemu/qemu_command.c b/src/qemu/qemu_command.c
index 1ec302d..5e09aa0 100644
--- a/src/qemu/qemu_command.c
+++ b/src/qemu/qemu_command.c
@@ -5947,6 +5947,9 @@ qemuBuildClockArgStr(virDomainClockDefPtr def)
case VIR_DOMAIN_TIMER_TRACK_WALL:
virBufferAddLit(&buf, ",clock=host");
break;
+ case VIR_DOMAIN_TIMER_TRACK_REALTIME:
+ virBufferAddLit(&buf, ",clock=rt");
+ break;
}
switch (def->timers[i]->tickpolicy) {
diff --git a/src/qemu/qemu_validate.c b/src/qemu/qemu_validate.c
index a060bd9..d4fe40f 100644
--- a/src/qemu/qemu_validate.c
+++ b/src/qemu/qemu_validate.c
@@ -444,6 +444,7 @@ qemuValidateDomainDefClockTimers(const virDomainDef *def,
case -1: /* unspecified - use hypervisor default */
case VIR_DOMAIN_TIMER_TRACK_GUEST:
case VIR_DOMAIN_TIMER_TRACK_WALL:
+ case VIR_DOMAIN_TIMER_TRACK_REALTIME:
break;
case VIR_DOMAIN_TIMER_TRACK_BOOT:
virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
diff --git a/tests/qemuxml2argvdata/clock-realtime.args b/tests/qemuxml2argvdata/clock-realtime.args
new file mode 100644
index 0000000..7965696
--- /dev/null
+++ b/tests/qemuxml2argvdata/clock-realtime.args
@@ -0,0 +1,30 @@
+LC_ALL=C \
+PATH=/bin \
+HOME=/tmp/lib/domain--1-QEMUGuest1 \
+USER=test \
+LOGNAME=test \
+XDG_DATA_HOME=/tmp/lib/domain--1-QEMUGuest1/.local/share \
+XDG_CACHE_HOME=/tmp/lib/domain--1-QEMUGuest1/.cache \
+XDG_CONFIG_HOME=/tmp/lib/domain--1-QEMUGuest1/.config \
+QEMU_AUDIO_DRV=none \
+/usr/bin/qemu-system-i386 \
+-name QEMUGuest1 \
+-S \
+-machine pc,accel=tcg,usb=off,dump-guest-core=off \
+-m 214 \
+-realtime mlock=off \
+-smp 1,sockets=1,cores=1,threads=1 \
+-uuid c7a5fdbd-edaf-9455-926a-d65c16db1809 \
+-display none \
+-no-user-config \
+-nodefaults \
+-chardev socket,id=charmonitor,path=/tmp/lib/domain--1-QEMUGuest1/monitor.sock,\
+server,nowait \
+-mon chardev=charmonitor,id=monitor,mode=control \
+-rtc base=utc,driftfix=slew,clock=rt \
+-no-shutdown \
+-no-acpi \
+-usb \
+-drive file=/dev/HostVG/QEMUGuest1,format=raw,if=none,id=drive-ide0-0-0 \
+-device ide-hd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0,bootindex=1 \
+-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3
diff --git a/tests/qemuxml2argvdata/clock-realtime.xml b/tests/qemuxml2argvdata/clock-realtime.xml
new file mode 100644
index 0000000..71bdc5a
--- /dev/null
+++ b/tests/qemuxml2argvdata/clock-realtime.xml
@@ -0,0 +1,31 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'>
+ <timer name='rtc' track='realtime'/>
+ </clock>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i386</emulator>
+ <disk type='block' device='disk'>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'/>
+ <controller type='ide' index='0'/>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='virtio'/>
+ </devices>
+</domain>
diff --git a/tests/qemuxml2xmloutdata/clock-realtime.xml b/tests/qemuxml2xmloutdata/clock-realtime.xml
new file mode 100644
index 0000000..3ba6b4c
--- /dev/null
+++ b/tests/qemuxml2xmloutdata/clock-realtime.xml
@@ -0,0 +1,38 @@
+<domain type='qemu'>
+ <name>QEMUGuest1</name>
+ <uuid>c7a5fdbd-edaf-9455-926a-d65c16db1809</uuid>
+ <memory unit='KiB'>219100</memory>
+ <currentMemory unit='KiB'>219100</currentMemory>
+ <vcpu placement='static'>1</vcpu>
+ <os>
+ <type arch='i686' machine='pc'>hvm</type>
+ <boot dev='hd'/>
+ </os>
+ <clock offset='utc'>
+ <timer name='rtc' track='realtime'/>
+ </clock>
+ <on_poweroff>destroy</on_poweroff>
+ <on_reboot>restart</on_reboot>
+ <on_crash>destroy</on_crash>
+ <devices>
+ <emulator>/usr/bin/qemu-system-i386</emulator>
+ <disk type='block' device='disk'>
+ <driver name='qemu' type='raw'/>
+ <source dev='/dev/HostVG/QEMUGuest1'/>
+ <target dev='hda' bus='ide'/>
+ <address type='drive' controller='0' bus='0' target='0' unit='0'/>
+ </disk>
+ <controller type='usb' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x2'/>
+ </controller>
+ <controller type='ide' index='0'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x01' function='0x1'/>
+ </controller>
+ <controller type='pci' index='0' model='pci-root'/>
+ <input type='mouse' bus='ps2'/>
+ <input type='keyboard' bus='ps2'/>
+ <memballoon model='virtio'>
+ <address type='pci' domain='0x0000' bus='0x00' slot='0x03' function='0x0'/>
+ </memballoon>
+ </devices>
+</domain>
--
1.8.3.1
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