Re: [Xen-devel] 4.7 qemu regression: HVM guests fail to boot from xvda

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

George Dunlap writes ("Re: [Xen-devel] 4.7 qemu regression: HVM guests fail to 
> We could consider at an xl level having a domain-wide and system-wide
> defaults.  That way Olaf could set "disk_emulate_default=always" (or
> whatever) in the global xl.conf and everything would work the way it
> used to without even needing to change individual guest config files.

Yes.

Let me quote in email something I just said in irc:

11:24 <Diziet> liuw: I think we need to decide what to do about Olaf's 
               complaint about vdev semantic regression.
11:25 <Diziet> I know it's late in the release but given that the best answer 
               is probably some per-vdev parameter to control the behaviour, 
               along George's lines, and the reason we're not adopting that 
               right away is compatibility pain: I'm tempted to suggest 
               reverting the original change for 4.7.
11:26 <Diziet> The conversation in the thread about how to fix the problem is 
               making progress but I am very uncomfortable with this amount of 
               detailed API design being done under release pressure.
11:27 <Diziet> Releases are about short-term thinking, which is harmful to API 
               design.

Ian.

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