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The current upstream AHCI emulation does not support live migration. Patches from Jason Baron exist, but tests have shown that they don't work reliably under I/O load (the guest kernel freezes or crashes occasionally after live migration), so upstream is going to apply, but disable them.

This needs some debugging to find the reason for the failures, so that the feature can be enabled for RHEL 7.

This is a complex feature and we won't be able to deliver it in RHEL7.0. Deferring it to RHEL7.1 at least.

And it should probably be reassigned to someone working on ahci itself upstream.

*** Bug 1047450 has been marked as a duplicate of this bug. ***

*** Bug 1049259 has been marked as a duplicate of this bug. ***

Hi Huding,

Could you have a try and add comment?

Best Regards,
Junyi

*** Bug 1023852 has been marked as a duplicate of this bug. ***

Won't be fixed in qemu-kvm except through rebase.