Re: [Xen-devel] out-of-memory problem when restoringballooneddomains

[Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>]

On 10 Mar 2005, at 23:35, Lars Rasmusson wrote:

> I think the relevant part from the log is this.
>
> xc_linux_restore start
> Could not create domain. pfns=460800, 1843200KB
> Could not create domain. pfns=460800, 1843200KB
> 4526 [INF] XFRD> Xfr service err=1
Ah! The problem is that we initially create the domain with its 
'maximum possible' memory allocation, and then automatically 'balloon 
it down' at the end of the restore operation. Of course by the third 
domain you do not have 1.8GB of headroom and so the third restore 
fails.
This probably made live relocation easier to implement, but we need to 
change this to allocate only the memory that the domain is currently 
using during each round of pre-copy migration. Getting non-live moved 
over is the first step, and then fix live relocation, I guess.
 -- Keir



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