Re: [Xen-devel] PATCH: Fix name uniqueness check

[Jim Fehlig <jfehlig@xxxxxxxxxx>]

Daniel P. Berrange wrote:
> Changeset  15124:f5459c358575 altered check_name() in XendDomainInfo so that
> it compares domain IDs instead of UUIDs. This breaks a number of things
>
>  - You can no longer use 'xm new' to define a persistent config file for
>    a running guest. This breaks the key OS provisioning scenario where
>    you boot a kenrel+initrd for the installer, and at the same time define
>    a permanent config with pygrub.
>
>  - It lets you define multiple inactive guests with different UUIDs, but  
>    the same name because all inactive guests have a domid of None. So you
>    can now end up with multiple guests with same name, which is contrary
>    to the goal implied by the patch which was name uniqueness.
>
> It is unclear from the original commit logs just what scenario it was trying
> to protect against, but the original checking of uniqueness based on UUID 
> was correct & is what was used in previous releases XenD.
>   

Yes, I was not sure what this patch was attempting to fix either.  There
was some discussion about the patch in this thread

http://lists.xensource.com/archives/html/xen-devel/2007-05/msg00887.html

At any rate, the patch was giving me some problems with reboot so I
added to the misery with this

http://xenbits2.xensource.com/xen-unstable.hg?rev/9f4f70233041

Regards,
Jim


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