Hi, I'm trying to implement the volUpload and volDownload functions for the RBD storage driver but I keep getting this: 2016-01-30 18:56:11.675+0000: 6447: debug : virStorageBackendRBDVolDownload:1395 : Read 4096 bytes at offset 0 from RBD image libvirt/wido1 2016-01-30 18:56:11.675+0000: 6447: debug : virStreamSend:168 : stream=0x7fe780000930, data=0x7fe780062df0, nbytes=4096 2016-01-30 18:56:11.675+0000: 6447: error : virStreamSend:186 : this function is not supported by the connection driver: virStreamSend I reference to the stream with virStreamRef(stream); and then I use virStreamSend() to write data to the stream, but that fails. I've looked through the source and couldn't find anything what might be the issue. Libvirt is running locally on my system and I'm using qemu:///system to connect locally with virsh. Do I need to initialize the stream in any way before I can write data to it? Wido -- libvir-list mailing list libvir-list@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvir-list