domain_conf: Introduce virDomainDefHasNVMeDisk

This function will return true if any of disks (or their backing
chain) for given domain contains an NVMe disk.

Signed-off-by: Michal Privoznik <mprivozn@redhat.com>
ACKed-by: Peter Krempa <pkrempa@redhat.com>
Reviewed-by: Cole Robinson <crobinso@redhat.com>

src/conf/domain_conf.c

@@ -31479,6 +31479,20 @@ virDomainDefHasManagedPR(const virDomainDef *def)
 }
 
 
+bool
+virDomainDefHasNVMeDisk(const virDomainDef *def)
+{
+    size_t i;
+
+    for (i = 0; i < def->ndisks; i++) {
+        if (virStorageSourceChainHasNVMe(def->disks[i]->src))
+            return true;
+    }
+
+    return false;
+}
+
+
 bool
 virDomainDefHasVFIOHostdev(const virDomainDef *def)
 {

src/conf/domain_conf.h

@@ -3667,6 +3667,9 @@ virDomainDiskGetDetectZeroesMode(virDomainDiskDiscard discard,
 bool
 virDomainDefHasManagedPR(const virDomainDef *def);
 
+bool
+virDomainDefHasNVMeDisk(const virDomainDef *def);
+
 bool
 virDomainDefHasVFIOHostdev(const virDomainDef *def);
 

src/libvirt_private.syms

@@ -310,6 +310,7 @@ virDomainDefHasManagedPR;
 virDomainDefHasMdevHostdev;
 virDomainDefHasMemballoon;
 virDomainDefHasMemoryHotplug;
+virDomainDefHasNVMeDisk;
 virDomainDefHasUSB;
 virDomainDefHasVcpusOffline;
 virDomainDefHasVFIOHostdev;