Re: [Xen-users] synchronization with AoE

[Tom Mornini <tmornini@xxxxxxxxxxxxxx>]

On Dec 2, 2006, at 6:30 PM, Daniel Bareiro wrote:

> On Saturday, 02 December 2006 19:18:40 -0500,
>
> Hi Javier. Thanks for your answer.
>
> > > I'm using AoE to export a ReiserFS partition that contains a
> > > file-backed VBDs of a DomU to perform tests of migration between two
> > > xen host. The three systems have Debian GNU/Linux Etch.
> > are you mounting the same volume on two hosts?  remember that  
> > ReiserFS
> > isn't a cluster filesystem, and it won't stay consistent. IOW,  
> > this is
> > a sure recipe to corrupt the FS
> Yes. I must mount /dev/etherd/e0.0 on two host to perform the  
> migration,
> because of the file-backed VBD of DomU resides in this exported
> partition. How I said, both files writes and deletes in the file- 
> backed
> VBD of DomU works synchronized, but the problem seems to be when I  
> want
> to create a file in the exported partition together with the file- 
> backed
> VBDs of DomU. Why this difference in the synchronization? How I get
> writes and deletes in synchronized mode to both file-backed VBD of  
> DomU
> and others files in the same exported partition?
What Javier said is correct. What you are trying to do *will not work*.

I cannot answer your question specifically, but I can say without  
question
that the weirdness you're seeing is a side-effect of the root  
problem, and
that you'll have bigger problems than you're already seen, as in data  
loss
and kernel panics, if you continue down this road.

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