[Qemu-devel] [migration] questions about removing the old block-migration code

[Zhanghaoyu (A)]

Hi, Juan

I read below words on the report of <KVM Live Migration: Weather forecast (May 
29, 2013)>,
We were going to remove the old block-migration code
Then people fixed it
Good: it works now
Bad: We have to maintain both
It uses the same port than migration
You need to migrate all/none of block devices

The old block-migration code said above is that in block-migration.c?
What are the reasons of removing the old block-migration code? Buggy 
implementation? Or need to migrate all/none of block devices?
What's the substitutional method? drive_mirror?

Thanks,
Zhang Haoyu