Re: [Xen-devel] [Xen-users] BLKTAP

["Michael A. Collins" <mike.a.collins@xxxxxxxxxxx>]

On 22.11.2011 12:27, Shriram Rajagopalan wrote:
> its drbd btw :).
> can u just start a domain with drbd backend disk? (no remus) or
> anything.
> I mean using the drbd: syntax (as described in the DRBD website)
>  or using the
> "script=drbd,backendtype=phy,format=raw,target=resourceName" syntax 
> in
> xl.
> Â
> ÂI have tried and it doesnt work. xl defaults (hardcoded?) to tap
> backend.
> doing a grep in the tools/libxl directory, I can see that there is no
> implementation
>  for invoking the script supplied as part of disk spec.
>
> if (disk->script) {
> ÂÂÂÂÂÂÂ LIBXL__LOG(ctx, LIBXL__LOG_ERROR, "External block
> scripts"
> ÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂÂ " not yet supported, sorry");
>  ÂÂÂÂÂÂÂ rc = ERROR_INVAL;
> ÂÂÂÂÂÂÂ goto out_free;
> ÂÂÂ }
>
> Â

That's cool, and explains alot.  I had not figured that libxl didn't 
have the capability of executing block scripts.  I will wait patiently 
and try to assist in any way to test any changes needed to provide libxl 
support to remus.
Mike

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