Re: FW: [Xen-users] error accessing cdrom in domU

I experienced a similar problem in 2.0.5 - I could directly share the
CDROM as read-only, I could mount it but any attempt at reading provoked
an error.  Does anyone know if this was fixed in 2.0.6? Thanks - John

On Thu, 2005-07-28 at 18:03 -0500, Utsav Agarwal wrote:
> I was able to solve the problem by enabling the guest to directly
> access an external usb cdrom device.
> 
> Therefore dom0 has control of the internal cdrom device and 3 domains
> get one usb port each. 
> 
>  
> 
> 1) Change /boot/grub/menu.lst in dom0 and reboot 
> 
>  
> 
> title Xen2
> 
>     kernel (hd0,4)/xen.gz dom0_mem=417972
> physdev_dom0_hide='(00:03.0)(00:03.1)(00:03.2)'
> 
>     module (hd0,4)/vmlinuz-2.6.8-24.14-xen
> 
>     module (hd0,4)/initrd-2.6.8-24.14-xen
> 
>  
> 
> 2) add pci device line in domU config file:
> 
>  
> 
>     pci = [ '00,03,00' ]
> 
>  
> 
>  
> 
> Thanks,
> 
>  
> 
>     
> 
>                                    
> ______________________________________________________________________
> From:xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Utsav
> Agarwal
> Sent: Wednesday, July 27, 2005 1:27 PM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] error accessing cdrom in domU
> 
> 
>  
> 
> The following 2 error messages found in dom0 system log:
> 
>  
> 
> kernel: hdc: cdrom_read_intr: data underrun (2 blocks)
> 
> kernel: end_request: I/O error, dev hdc, sector 64
> 
>  
> 
> when I try to mount the cdrom from domU
> 
>  
> 
>  
> 
>                                    
> ______________________________________________________________________
> From: xen-users-bounces@xxxxxxxxxxxxxxxxxxx
> [mailto:xen-users-bounces@xxxxxxxxxxxxxxxxxxx] On Behalf Of Utsav
> Agarwal
> Sent: Wednesday, July 27, 2005 11:48 AM
> To: xen-users@xxxxxxxxxxxxxxxxxxx
> Subject: [Xen-users] cdrom access in domU
> 
> 
>  
> 
> I am currently having to nfs export cdrom from dom0 to domU and that
> is cumbersome. 
> 
> Is there a way to do it at the device level?
> 
>  
> 
>  
> 
> ------------------------------------------------------------------------------------
> 
> Utsav Agarwal
> 
> Systems Analyst
> 
> eXcellence in IS Solutions (X-ISS)
> 
> ------------------------------------------------------------------------------------
> 
>  
> 
> 
> _______________________________________________
> Xen-users mailing list
> Xen-users@xxxxxxxxxxxxxxxxxxx
> http://lists.xensource.com/xen-users
-- 
John A. Sullivan III
Open Source Development Corporation
+1 207-985-7880
jsullivan@xxxxxxxxxxxxxxxxxxx

If you would like to participate in the development of an open source
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