Re: [Qemu-block] block replication

2017-08-10 Thread Vladimir Sementsov-Ogievskiy
09.08.2017 17:11, Vladimir Sementsov-Ogievskiy wrote: Hi Wen! I'm trying to understand block/replication code and have a question. Why should we block the region from intersecting cow requests when read? If I understand correctly regardless of writes to the secondary-disk we have consistent

[Qemu-block] [Block Replication] Question about supporting COLO in libvirt

2017-02-06 Thread Hailiang Zhang
Hi, I'm trying to implement supporting COLO in libvirt, But i found an annoying problem that libvirt does not support the command line option argument syntax we used for block replication in QEMU. That is libvirt does not support the bellow syntax for block: -drive