qemu: capabilities: Introduce QEMU_CAPS_SNAPSHOT_INTERNAL_QMP capability

The 'snapshot-save/delete' QMP commands were introduced in QEMU 6.0.0,
so we add a compatible capability to check if target QEMU binary supports it.

Signed-off-by: Nikolai Barybin <nikolai.barybin@virtuozzo.com>
Signed-off-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Pavel Hrdina <phrdina@redhat.com>

src/qemu/qemu_capabilities.c

@@ -715,6 +715,9 @@ VIR_ENUM_IMPL(virQEMUCaps,
               "acpi-erst", /* QEMU_CAPS_DEVICE_ACPI_ERST */
               "intel-iommu.dma-translation", /* QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION */
               "machine-i8042-opt", /* QEMU_CAPS_MACHINE_I8042_OPT */
+
+              /* 465 */
+              "snapshot-internal-qmp", /* QEMU_CAPS_SNAPSHOT_INTERNAL_QMP */
     );
 
 
@@ -1235,6 +1238,7 @@ struct virQEMUCapsStringFlags virQEMUCapsCommands[] = {
     { "query-stats", QEMU_CAPS_QUERY_STATS },
     { "query-stats-schemas", QEMU_CAPS_QUERY_STATS_SCHEMAS },
     { "display-reload", QEMU_CAPS_DISPLAY_RELOAD },
+    { "snapshot-save", QEMU_CAPS_SNAPSHOT_INTERNAL_QMP },
 };
 
 struct virQEMUCapsStringFlags virQEMUCapsMigration[] = {

src/qemu/qemu_capabilities.h

@@ -695,6 +695,9 @@ typedef enum { /* virQEMUCapsFlags grouping marker for syntax-check */
     QEMU_CAPS_INTEL_IOMMU_DMA_TRANSLATION, /* intel-iommu.dma-translation */
     QEMU_CAPS_MACHINE_I8042_OPT, /* -machine xxx,i8042=on/off; use virQEMUCapsSupportsI8042Toggle() to query this capability */
 
+    /* 465 */
+    QEMU_CAPS_SNAPSHOT_INTERNAL_QMP, /* internal snapshot support via QMP commands 'snapshot-save'/'snapshot-delete' */
+
     QEMU_CAPS_LAST /* this must always be the last item */
 } virQEMUCapsFlags;
 

tests/qemucapabilitiesdata/caps_6.0.0_aarch64.xml

@@ -138,6 +138,7 @@
   <flag name='usb-mtp'/>
   <flag name='machine.virt.ras'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6000000</version>
   <microcodeVersion>61700242</microcodeVersion>
   <package>v6.0.0</package>

tests/qemucapabilitiesdata/caps_6.0.0_s390x.xml

@@ -94,6 +94,7 @@
   <flag name='virtio-crypto'/>
   <flag name='display-reload'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6000000</version>
   <microcodeVersion>39100242</microcodeVersion>
   <package>qemu-6.0.0-20210517.1.4ff77070.fc33</package>

tests/qemucapabilitiesdata/caps_6.0.0_x86_64.xml

@@ -173,6 +173,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6000000</version>
   <microcodeVersion>43100242</microcodeVersion>
   <package>v6.0.0</package>

tests/qemucapabilitiesdata/caps_6.1.0_x86_64.xml

@@ -179,6 +179,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6001000</version>
   <microcodeVersion>43100243</microcodeVersion>
   <package>v6.1.0</package>

tests/qemucapabilitiesdata/caps_6.2.0_aarch64.xml

@@ -151,6 +151,7 @@
   <flag name='usb-mtp'/>
   <flag name='machine.virt.ras'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6001050</version>
   <microcodeVersion>61700244</microcodeVersion>
   <package></package>

tests/qemucapabilitiesdata/caps_6.2.0_ppc64.xml

@@ -139,6 +139,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6002000</version>
   <microcodeVersion>42900244</microcodeVersion>
   <package>v6.2.0</package>

tests/qemucapabilitiesdata/caps_6.2.0_x86_64.xml

@@ -181,6 +181,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6002000</version>
   <microcodeVersion>43100244</microcodeVersion>
   <package>v6.2.0</package>

tests/qemucapabilitiesdata/caps_7.0.0_aarch64+hvf.xml

@@ -160,6 +160,7 @@
   <flag name='machine.virt.ras'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6002092</version>
   <microcodeVersion>61700243</microcodeVersion>
   <package>v7.0.0-rc2</package>

tests/qemucapabilitiesdata/caps_7.0.0_aarch64.xml

@@ -160,6 +160,7 @@
   <flag name='machine.virt.ras'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>6002092</version>
   <microcodeVersion>61700243</microcodeVersion>
   <package>v7.0.0-rc2</package>

tests/qemucapabilitiesdata/caps_7.0.0_ppc64.xml

@@ -158,6 +158,7 @@
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7000000</version>
   <microcodeVersion>42900243</microcodeVersion>
   <package>v7.0.0</package>

tests/qemucapabilitiesdata/caps_7.0.0_x86_64.xml

@@ -189,6 +189,7 @@
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7000000</version>
   <microcodeVersion>43100243</microcodeVersion>
   <package>v7.0.0</package>

tests/qemucapabilitiesdata/caps_7.1.0_ppc64.xml

@@ -159,6 +159,7 @@
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7001000</version>
   <microcodeVersion>42900244</microcodeVersion>
   <package>v7.1.0</package>

tests/qemucapabilitiesdata/caps_7.1.0_x86_64.xml

@@ -194,6 +194,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7001000</version>
   <microcodeVersion>43100244</microcodeVersion>
   <package>v7.1.0</package>

tests/qemucapabilitiesdata/caps_7.2.0_ppc.xml

@@ -154,6 +154,7 @@
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7002000</version>
   <microcodeVersion>0</microcodeVersion>
   <package>qemu-7.2.0-6.fc37</package>

tests/qemucapabilitiesdata/caps_7.2.0_x86_64+hvf.xml

@@ -198,6 +198,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7002000</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v7.2.0</package>

tests/qemucapabilitiesdata/caps_7.2.0_x86_64.xml

@@ -198,6 +198,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7002000</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v7.2.0</package>

tests/qemucapabilitiesdata/caps_8.0.0_riscv64.xml

@@ -141,6 +141,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>7002050</version>
   <microcodeVersion>0</microcodeVersion>
   <package>v7.2.0-333-g222059a0fc</package>

tests/qemucapabilitiesdata/caps_8.0.0_x86_64.xml

@@ -202,6 +202,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8000000</version>
   <microcodeVersion>43100244</microcodeVersion>
   <package>v8.0.0</package>

tests/qemucapabilitiesdata/caps_8.1.0_s390x.xml

@@ -122,6 +122,7 @@
   <flag name='display-reload'/>
   <flag name='usb-mtp'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8001000</version>
   <microcodeVersion>39100245</microcodeVersion>
   <package>v8.1.0</package>

tests/qemucapabilitiesdata/caps_8.1.0_x86_64.xml

@@ -204,6 +204,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8001000</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v8.1.0</package>

tests/qemucapabilitiesdata/caps_8.2.0_aarch64.xml

@@ -169,6 +169,7 @@
   <flag name='virtio-sound'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8002000</version>
   <microcodeVersion>61700246</microcodeVersion>
   <package>v8.2.0</package>

tests/qemucapabilitiesdata/caps_8.2.0_armv7l.xml

@@ -176,6 +176,7 @@
   <flag name='virtio-sound'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8002000</version>
   <microcodeVersion>0</microcodeVersion>
   <package>qemu-8.2.0-7.fc39</package>

tests/qemucapabilitiesdata/caps_8.2.0_loongarch64.xml

@@ -159,6 +159,7 @@
   <flag name='virtio-sound'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8002000</version>
   <microcodeVersion>106300246</microcodeVersion>
   <package>v8.2.0</package>

tests/qemucapabilitiesdata/caps_8.2.0_s390x.xml

@@ -123,6 +123,7 @@
   <flag name='usb-mtp'/>
   <flag name='virtio-sound'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8002000</version>
   <microcodeVersion>39100246</microcodeVersion>
   <package>v8.2.0</package>

tests/qemucapabilitiesdata/caps_8.2.0_x86_64.xml

@@ -207,6 +207,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>8002000</version>
   <microcodeVersion>43100246</microcodeVersion>
   <package>v8.2.0</package>

tests/qemucapabilitiesdata/caps_9.0.0_sparc.xml

@@ -79,6 +79,7 @@
   <flag name='blockjob.backing-mask-protocol'/>
   <flag name='display-reload'/>
   <flag name='netdev.user'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>9000000</version>
   <microcodeVersion>0</microcodeVersion>
   <package>qemu-9.0.0-1.fc40</package>

tests/qemucapabilitiesdata/caps_9.0.0_x86_64.xml

@@ -209,6 +209,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>9000000</version>
   <microcodeVersion>43100245</microcodeVersion>
   <package>v9.0.0</package>

tests/qemucapabilitiesdata/caps_9.1.0_riscv64.xml

@@ -167,6 +167,7 @@
   <flag name='virtio-sound'/>
   <flag name='netdev.user'/>
   <flag name='acpi-erst'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>9001000</version>
   <microcodeVersion>0</microcodeVersion>
   <package>v9.1.0</package>

tests/qemucapabilitiesdata/caps_9.1.0_x86_64.xml

@@ -207,6 +207,7 @@
   <flag name='acpi-erst'/>
   <flag name='intel-iommu.dma-translation'/>
   <flag name='machine-i8042-opt'/>
+  <flag name='snapshot-internal-qmp'/>
   <version>9001000</version>
   <microcodeVersion>43100246</microcodeVersion>
   <package>v9.1.0</package>