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[Qemu-discuss] external usb flash drive support on qemu virtualization

From: Kumar Girish
Subject: [Qemu-discuss] external usb flash drive support on qemu virtualization
Date: Thu, 20 Oct 2016 15:10:50 +0000

Hi All,

I have analysed my code and added the usb configuration while spawning the 
guest CMM. Unfortunately still the usb is not visible.
Could you please help me on this. 
I added this config   "-usb -usbdevice host:090c:1000 " . you can see in the 
last but one line  
Following is my config

/bin/qemu-system-x86_64 -aos cmm -smp 2 -m 3072 -aosimage 
/flash/working/Mos.img -device virtio-prestera --enable-kvm -machine accel=kvm 
-qmp tcp:,server,nowait -netdev 
type=tap,id=eth0,ifname=tun0cmm,script=no,downscript=no  -device 
virtio-net-pci,netdev=eth0,mac=2c:fa:a2:0a:29:46  -netdev 
type=tap,id=eth1,ifname=tun1cmm,script=no,downscript=no  -device 
virtio-net-pci,netdev=eth1,mac=00:0a:1e:11:11:f8  -netdev 
type=tap,id=eth2,ifname=tun2cmm,script=no,downscript=no  -device 
virtio-net-pci,netdev=eth2  -netdev 
type=tap,id=eth3,ifname=tun3cmm,script=no,downscript=no  -device 
virtio-net-pci,netdev=eth3,mac=00:0a:1e:11:11:f8 -netdev 
type=tap,id=eth4,ifname=tun4cmm,script=no,downscript=no  -device 
virtio-net-pci,netdev=eth4 -nographic -pidfile /CMMGuestPid -append -usb 
-usbdevice host:090c:1000  "console=ttyS0 empipaddr= 
empnetmask= empgateway= medora_early.ALU_VMSlotNum=0 
medora_early.ALU_VMPrimaryA=1 medora_early.ALU_VMIsCmm=1"

Have few questions please clarify.

1. Is it possible to add usb configuration once the guest is UP. That is 
dynamically adding the usb configuration 

2. Once the configuration is done,  should I unplug and plug the usb flash 
stick (pendrive)

3. does lsusb show usb devices at guest also 


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