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Re: [Xen-devel] Xen 3.0.4 migration failures

Keir Fraser wrote:
On 6/1/07 12:52 am, "John Byrne" <john.l.byrne@xxxxxx> wrote:

With the Xen 3.0.4 I've built from source, migration is failing and the
domain vanishes. (Either live/non-live.) The output from "xm dmesg" and
xend.log follows. Any ideas?

PAE or 64-bit? Looks like the target is choking on _PAGE_NX. Probably the
target machine does not support it. We discussed silently dropping _PAGE_NX
on machines that don't support it but that seems a bit dubious to me. This
really needs to be solved by adding CPUID to the save format and doing
consistency checking at the target before committing to the migration. 3.0.5
will also have save/restore cancellation, so that at least if things do
screw up your guest won't /dev/null.

 -- Keir

PAE. NX was disabled int the BIOS. Things work now. Thanks.

Getting rid of the "disappearing domain" issue will certainly be good, but mysterious refusals to migrate with unhelpful error messages will only be relatively better. Decent diagnostics for CPU incompatibilities are really important.

Thanks again,

John Byrne

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