[question] The source cannot recover, if the destination fails in the last round of live migration

[Kunkun Jiang]

Hi all,

Recently I am learning about the part of live migration.
I have a question about the last round.

When the pending_size is less than the threshold, it will enter
the last round and call migration_completion(). It will stop the
source and sent the remaining dirty pages and devices' status
information to the destination. The destination will load these
information and start the VM.

If there is an error at the destination at this time, it will exit
directly, and the source will not be able to detect the error
and recover. Because the source will not call
migration_detect_error().

Is my understanding correct?
Should the source wait the result of the last round of destination ?

Thanks,
Kunkun Jiang