Re: [Xen-API] look into VHD VDI from Control Domain in XCP 1.6

[Alexandre Kouznetsov <alk@xxxxxxxxxx>]

Hello.

El 04/01/13 23:14, George Shuklin escribiÃ:
> Use xe vbd-create between vdi and dom0 (which is normal VM mostly), and
> xe vbd-plug.
Yes, that's what I have done following the example from Citrix forum.

In case of a normal DomU:
I create VBD linking the VM with VDI,
I issue vbd-plug,
the block device becomes visible in dmesg under DomU.

In case of Dom0:
I create VBD linking the VM (vm-list refers to it as "Control Domain", 
no mistake) with VDI,
I issue vbd-plug,
no sign of the new block device in dmesg or under /dev.

> You can see some sample usage in 'xe-edit-bootloader' command (somewhere
> in /opt/xensource/)
Hm. I believe I'm doing it just the same way as in the script, except by 
the "device=" directive for vbd-create, use specific string like "xvdn".
Should it make the difference? Can't test, I shot down my testing range 
before leaving the office.
So, must I understand that the XCP's regular way of manipulating VDI's 
contents from within Dom0, is attaching the VDI to it via a VBD?
Looks like a good abstraction, except that it won't work that easily on 
a host without XCP infrastructure (for example, in some rescue scenario).
Then, what vhdpartx is good for?

Cheers.


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