accessing USB as storage device through lxc container.

[ravi mh <ravi.zombie@xxxxxxxxx>]

Hi all,

I am not able to access USB as storage device in the lxc container.

Having tried to pass the usb device with the product and vendor id, not able to see the device mounted in the lxc file system.

However, they are seen as char devices in the container at the location. There is no issue of ACL, as the capabilities restrictions have been dropped.

Has anyone successfully mounted the storage device in the libvirt.  Having gone through the libvirt documentation, couldnt find further information of enabling the usb as storage device.  Any pointers towards that would be useful.

Host OS:

IR800-GOS-1:~# lsusb
Bus 001 Device 003: ID 8644:800b
Bus 001 Device 001: ID 1d6b:0002
Bus 002 Device 001: ID 1d6b:0001
IR800-GOS-1:~#

Lxc app container:

root@ir800-lxc:/mnt/usb# ls -la  /dev/bus/usb/001/003
crwx------    1 root     root      189,   2 Feb  3 01:44 /dev/bus/usb/001/003

----------libvirt xml snippet ------------

    <hostdev mode='subsystem' type='usb' managed='yes'>
      <source>                                       
        <vendor id='0x8644'/>                  
        <product id='0x800b'/>                                 
      </source>              
    </hostdev>        

-----------------------------

while changing the mode from subsystem to capabilities, it issues error for validating against the schema.

---------------while changing the hostdev mode='capabilities'----------

virsh # edit n01_1
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng
Extra element devices in interleave
Element domain failed to validate content

Failed. Try again? [y,n,i,f,?]:
error: XML document failed to validate against schema: Unable to validate doc against /usr/share/libvirt/schemas/domain.rng

--------------------------------------------

Regards,
Ravi

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