On 12/21/2017 08:29 PM, Jason Behmer via Virtualization wrote: > Hi Paolo, > I had a question about this patch that eliminates virtio-scsi timeout on > IOs - https://patchwork.kernel.org/patch/9802047/. How does this work > when we have IOs outstanding to a device that is then hot-unplugged. > I'm under the impression that those IOs will never get returned with any > status (please correct me if I'm wrong), and we will then end up waiting > on them forever with this patch. > It's no different from the virtio-block path; the I/O is pending in the qemu process. When a device is hot-unplugged the I/O will be returned to the qemu process, which then will return the final status to the guest.
Cheers, Hannes -- Dr. Hannes Reinecke Teamlead Storage & Networking [email protected] +49 911 74053 688 SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg GF: F. Imendörffer, J. Smithard, J. Guild, D. Upmanyu, G. Norton HRB 21284 (AG Nürnberg) _______________________________________________ Virtualization mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/virtualization
