VMware vSphere SDKs and Tools 8.0

8.0 7.0 6.7 6.5

Write Sectors To a Disk
Last Updated December 16, 2024

VixDiskLib_Write()
 writes one or more sectors to an open virtual disk. This function expects the fourth parameter
buf
 to be
VIXDISKLIB_SECTOR_SIZE
 bytes long. 
vixError = VixDiskLib_Write(newDisk.Handle(), i, j, buf);
In vSphere 6.7 and later, you can improve performance of NBD transport with asynchronous writes. Your program
VixDiskLib_WriteAsync
 in a loop, then calls
VixDiskLib_Wait
 to let all asynchronous writes complete. 
// customized callback for complete notification
void myDiskLibCompletion(void *cbData, VixError result);
// a loop for multiple write requests
for (...)
   vixError = VixDiskLib_WriteAsync(newDisk.Handle(), i, j, buf, myDiskLibCompletion, cbData);
   if (vixError != VIX_ASYNC) {
      // handle error
   }
}
VixDiskLib_Wait(newDisk.Handle()); // wait for async write to complete

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