Am 18.05.2026 um 08:23 hat Markus Armbruster geschrieben: > Cc: qemu-block and maintainer. > > Demi Marie Obenour <[email protected]> writes: > > > When used as a vhost-user server, is the QEMU Storage Daemon suitable > > for production use with untrusted guests and images? Does it have > > decent performance?
I think this is actually two questions: Is qemu-storage-daemon production quality and secure? It is really just a very thin wrapper around the components that QEMU itself uses. The part that is distinct is basically just parsing the command line, after that it's exactly the same as QEMU itself (well, exactly the same as a subset of QEMU, obviously). So I wouldn't worry about that part. The other question is about the performance of the vhost-user-blk export. It's been a while since I benchmarked exports, but when I did for my KVM Forum 2024 talk [1], performance wasn't bad, though it looked like it wasn't quite perfect either: vdpa-blk (VDUSE) performed slightly better, so if you can use that instead, it's worth a look. Kevin [1] https://gitlab.com/qemu-project/kvm-forum/-/raw/main/_attachments/2024/slides_out_of_process_storage_backends_hGZBfpS.pdf
