Re: [Qemu-devel] Re: [PATCH 0/3 v3] Live migration without shared storage

[Kevin Wolf <kwolf@redhat.com>]

Am 17.09.2009 16:03, schrieb Jan Kiszka:
> lirans@il.ibm.com wrote:
>> This series adds support for live migration without shared storage, means 
>> copy the storage while migrating. It was tested with KVM. Supports 2 ways 
>> to replicate the storage during migration:
>>  1. Complete copy of storage to destination 
>>  2. Assuming the storage is cow based, copy only the allocated 
>>     data, time of the migration will be linear with the amount of allocated 
>>     data (user responsibility to verify that the same backend file reside 
>>     on src and destination).
> 
> For my understanding: Does it require the use of qcow[2] or does it also
> work with raw images?

This leads me to the question what the block migration is doing with
qcow2 images (or better: images in any format but raw). What happens
with non-standard image options (like cluster size)? Are snapshots
copied over or won't they be available any more on the destination host?

Kevin