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From: | Paolo Bonzini |
Subject: | Re: [PATCH] blockdev: add 'media=cdrom' argument to support usb cdrom emulated as cdrom |
Date: | Fri, 9 Dec 2022 09:57:51 +0100 |
User-agent: | Mozilla/5.0 (X11; Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.5.0 |
On 12/9/22 03:28, Zhipeng Lu wrote:
Thanks. -device usb-bot,id=bot0 -device scsi-{cd,hd},bus=bot0.0,drive=drive0Qemu implements virtio scsi to emulate scsi controller, but if the virtual machine(for example windows guest os) don't install the virtio scsi driver, it don't work i need the function: emulate cdrom in guest, support hotplug and unplug, not depend on virtio driver
usb-bot *is* a SCSI controller and it does not require drivers in the guest. It is not very high-performance, but as you say it has hotplug functionality via USB.
Paolo
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