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Re: [Qemu-devel] Re: [PATCH 0/3 v3] Live migration without shared storag
From: |
Kevin Wolf |
Subject: |
Re: [Qemu-devel] Re: [PATCH 0/3 v3] Live migration without shared storage |
Date: |
Thu, 17 Sep 2009 17:38:59 +0200 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Thunderbird/3.0b3 |
Am 17.09.2009 16:03, schrieb Jan Kiszka:
> address@hidden 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