Re: [Xen-devel] Running netback/blkback in non-dom0 domains

[Samuel Thibault <samuel.thibault@xxxxxxxxxxxxx>]

Anton Burtsev, le Mon 21 Jul 2008 12:11:37 -0600, a écrit :
>   2) If you export a block device from dom0 through a domU to the second 
>      domU, e.g.
>      
>        /dev/loop0  ---->  /dev/sda2  ---->  /dev/sda2
>        dom0               domU(1)           domU(2)
>      
>      device is not accessible in domU(2) with an error 
>         Buffer I/O error on device sda2, logical block 25840 
>      Xen complains: 
>         (XEN) grant_table.c:360:d0 Could not pin grant frame 99551

I guess it is because domU(1) tries to directly expose domU(2)'s data
pages to dom0, which it is not allowed to do.

Samuel

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