QEMU translates the cache mode of a disk internally into 3 flags.
'write-cache' is a flag of the frontend while others are flag of the
backing storage. Add capability which will allow expressing it via the
frontend attribute.
Signed-off-by: Peter Krempa <pkrempa@xxxxxxxxxx>
---
src/qemu/qemu_capabilities.c | 5 +++++
src/qemu/qemu_capabilities.h | 1 +
tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml | 1 +
tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml | 1 +
tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml | 1 +
18 files changed, 22 insertions(+)
diff --git a/src/qemu/qemu_capabilities.c b/src/qemu/qemu_capabilities.c
index 959c27f3bf..dea2191e03 100644
--- a/src/qemu/qemu_capabilities.c
+++ b/src/qemu/qemu_capabilities.c
@@ -467,6 +467,7 @@ VIR_ENUM_IMPL(virQEMUCaps, QEMU_CAPS_LAST,
"virtio-mouse-ccw",
"virtio-tablet-ccw",
"qcow2-luks",
+ "disk-write-cache",
);
@@ -1727,6 +1728,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioBlk[] = {
{ "disable-legacy", QEMU_CAPS_VIRTIO_PCI_DISABLE_LEGACY },
{ "iommu_platform", QEMU_CAPS_VIRTIO_PCI_IOMMU_PLATFORM },
{ "ats", QEMU_CAPS_VIRTIO_PCI_ATS },
+ { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsVirtioNet[] = {
@@ -1764,11 +1766,13 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsSCSIDisk[] = {
{ "channel", QEMU_CAPS_SCSI_DISK_CHANNEL },
{ "wwn", QEMU_CAPS_SCSI_DISK_WWN },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW },
+ { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsIDEDrive[] = {
{ "wwn", QEMU_CAPS_IDE_DRIVE_WWN },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW },
+ { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsPiix4PM[] = {
@@ -1800,6 +1804,7 @@ static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsQ35PCIHost[] = {
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsUSBStorage[] = {
{ "removable", QEMU_CAPS_USB_STORAGE_REMOVABLE },
{ "share-rw", QEMU_CAPS_DISK_SHARE_RW },
+ { "write-cache", QEMU_CAPS_DISK_WRITE_CACHE },
};
static struct virQEMUCapsStringFlags virQEMUCapsObjectPropsKVMPit[] = {
diff --git a/src/qemu/qemu_capabilities.h b/src/qemu/qemu_capabilities.h
index 2203c28aa0..b2a48304f4 100644
--- a/src/qemu/qemu_capabilities.h
+++ b/src/qemu/qemu_capabilities.h
@@ -451,6 +451,7 @@ typedef enum {
QEMU_CAPS_DEVICE_VIRTIO_MOUSE_CCW, /* -device virtio-mouse-ccw */
QEMU_CAPS_DEVICE_VIRTIO_TABLET_CCW, /* -device virtio-tablet-ccw */
QEMU_CAPS_QCOW2_LUKS, /* qcow2 format support LUKS encryption */
+ QEMU_CAPS_DISK_WRITE_CACHE, /* qemu block frontends support write-cache param */
QEMU_CAPS_LAST /* this must always be the last item */
} virQEMUCapsFlags;
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
index 7585e02da2..2cdb246563 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.aarch64.xml
@@ -187,6 +187,7 @@
<flag name='pl011'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2010000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>303541</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
index 153e199c41..26c39051f7 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.ppc64.xml
@@ -186,6 +186,7 @@
<flag name='machine.pseries.max-cpu-compat'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2010000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>382824</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
index c4be3fca51..ce7c6eff09 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.s390x.xml
@@ -147,6 +147,7 @@
<flag name='iscsi.password-secret'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2010000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>303326</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
index 4dd5602014..4e6dac34fb 100644
--- a/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.10.0.x86_64.xml
@@ -230,6 +230,7 @@
<flag name='isa-serial'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2010000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>344938</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
index cbd645ae93..3cdea03a71 100644
--- a/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.11.0.s390x.xml
@@ -151,6 +151,7 @@
<flag name='virtio-mouse-ccw'/>
<flag name='virtio-tablet-ccw'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2011000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>342058</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
index ec2eec17f4..81d67388f4 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.aarch64.xml
@@ -188,6 +188,7 @@
<flag name='pl011'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2011090</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>342346</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
index 1122d6408b..b8b62c85ff 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.ppc64.xml
@@ -186,6 +186,7 @@
<flag name='machine.pseries.max-cpu-compat'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2011090</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>419215</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
index 191b1e0e37..c634800340 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.s390x.xml
@@ -151,6 +151,7 @@
<flag name='virtio-mouse-ccw'/>
<flag name='virtio-tablet-ccw'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2011090</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>0</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
index aa5de811e1..97d8355451 100644
--- a/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.12.0.x86_64.xml
@@ -226,6 +226,7 @@
<flag name='isa-serial'/>
<flag name='dump-completed'/>
<flag name='qcow2-luks'/>
+ <flag name='disk-write-cache'/>
<version>2011090</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>390060</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
index b58c3a1bda..7547d66479 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.s390x.xml
@@ -137,6 +137,7 @@
<flag name='virtio-blk.num-queues'/>
<flag name='sclplmconsole'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2007000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>216732</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
index 736e61aeb2..e4d53f3dd1 100644
--- a/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.7.0.x86_64.xml
@@ -210,6 +210,7 @@
<flag name='virtio-blk.num-queues'/>
<flag name='isa-serial'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2007000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>239029</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
index 2b91337fde..ee7d4d6b81 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.s390x.xml
@@ -139,6 +139,7 @@
<flag name='virtio-blk.num-queues'/>
<flag name='sclplmconsole'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2007093</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>241633</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
index df6f7be340..f815c5c324 100644
--- a/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.8.0.x86_64.xml
@@ -212,6 +212,7 @@
<flag name='virtio-blk.num-queues'/>
<flag name='isa-serial'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2008000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>255684</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
index c83b5211f3..1c4082ac52 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.ppc64.xml
@@ -178,6 +178,7 @@
<flag name='iscsi.password-secret'/>
<flag name='isa-serial'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2009000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>346538</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
index ac8d145d19..67ee72155b 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.s390x.xml
@@ -142,6 +142,7 @@
<flag name='disk-share-rw'/>
<flag name='iscsi.password-secret'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2009000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>265051</microcodeVersion>
diff --git a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
index 13fc8c143f..97908bf5a0 100644
--- a/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
+++ b/tests/qemucapabilitiesdata/caps_2.9.0.x86_64.xml
@@ -225,6 +225,7 @@
<flag name='iscsi.password-secret'/>
<flag name='isa-serial'/>
<flag name='dump-completed'/>
+ <flag name='disk-write-cache'/>
<version>2009000</version>
<kvmVersion>0</kvmVersion>
<microcodeVersion>320947</microcodeVersion>
--
2.16.2
--
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