Re: [Xen-devel] [PATCH] xl: Special case tap/aio for disk validation

[Stefano Stabellini <stefano.stabellini@xxxxxxxxxxxxx>]

On Fri, 28 Jan 2011, Jim Fehlig wrote:
> Kamala Narasimhan wrote:
> >> - phy:/path/to/device
> >> - file:/path/to/file
> >> - tap:/path/to/file
> >>     
> >
> > Along with phy, file and tap for block device types there appear to be a 
> > 'drdb' option too.  Do we actively support it?
> 
> The xend toolstack supports arbitrary external block device types.  We
> have block-iscsi and block-npiv,  and the drbd project provides
> block-drbd.  I'm quite sure I've seen other custom block types as well. 
> Will these arbitrary block device types still be supported in the new
> toolstack?

Is it just a matter of forking and executing an external script to
setup a block device and threat it as phy: afterwards?
It shouldn't be too difficult but still non-trivial at this point of the
release cycle.
Maybe users could work around the lack of support in 4.1 calling the
script themselves and using the name of the block device in the VM
config file directly?

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