Re: [Xen-devel] Test report: Migration from 4.1 to 4.2 works

[Ian Jackson <Ian.Jackson@xxxxxxxxxxxxx>]

Ian Jackson writes ("Re: Test report: Migration from 4.1 to 4.2 works"):
> Migration 4.1 xend -> 4.2 xl, plan A:
>   Stop xend, use xl to do the migration.
> 
>   Fails:
> 
>   xc: Saving memory: iter 1 (last sent 134144 skipped 1553): 0/1048576
>   0%xc: error: Failed to allocate memory for batch.!: Internal error
> 
>   (XEN) page_alloc.c:1284:d0 Over-allocation for domain 23: 131329 > 131328
>   (XEN) memory.c:131:d0 Could not allocate order=0 extent: id=23 memflags=0 
> (288 of 472)

This works if I create a guest config file with a bigger "memory="
value, and pass that to xl migrate -C.

I can also do the migration successfully by migrating the domain to
the new host with xend, and then stopping xend on the target host.
After that an "xl migrate localhost" again works if the config file
I supply with -C (which is mandatory since xend didn't write one) has
an increased memory= value.

Ian.

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