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Re: [Qemu-devel] question about live migration with storage
From: |
Zhang Haoyu |
Subject: |
Re: [Qemu-devel] question about live migration with storage |
Date: |
Wed, 14 Jan 2015 15:58:47 +0800 |
On 2015-01-14 15:42:41, Paolo Bonzini wrote:
>
> On 14/01/2015 03:41, Zhang Haoyu wrote:
> > Hi, Paolo,
> > what's advantages of drive_mirror over traditional mechanism implemented in
> > block-migration.c ?
> > Why libvirt use drive_mirror instead of traditional iterative mechanism as
> > the default way
> > of live migration with non-shared storage?
>
> 1) Being able to choose which block devices are migrated, and whether
> they are migrated incrementally or not.
>
Yes.
> 2) Finer-grain control the parameters of block migration (dirty bitmap
> granularity).
>
> 3) Block and RAM migration do not share the same socket and thus can
> more easily be parallelized.
>
But, because of the parallelization, how to calculate the progress?
BTW, the traditional iterative mechanism is buggy-implemented?
e.g., some bugs which are very difficult to fixed, or something?
Thanks,
Zhang Haoyu
> Note that 1-2 are not yet supported by libvirt as far as I remember.
>
> Paolo
- [Qemu-devel] question about live migration with storage, Zhang Haoyu, 2015/01/12
- Re: [Qemu-devel] question about live migration with storage, Zhang Haoyu, 2015/01/12
- Re: [Qemu-devel] question about live migration with storage, Paolo Bonzini, 2015/01/13
- Re: [Qemu-devel] question about live migration with storage, Zhang Haoyu, 2015/01/13
- Re: [Qemu-devel] question about live migration with storage, Paolo Bonzini, 2015/01/14
- Re: [Qemu-devel] question about live migration with storage,
Zhang Haoyu <=
- Re: [Qemu-devel] question about live migration with storage, Paolo Bonzini, 2015/01/14
- Re: [Qemu-devel] question about live migration with storage, Zhang Haoyu, 2015/01/14
- Re: [Qemu-devel] question about live migration with storage, Paolo Bonzini, 2015/01/15
- Re: [Qemu-devel] question about live migration with storage, Zhang Haoyu, 2015/01/15
- Re: [Qemu-devel] question about live migration with storage, Paolo Bonzini, 2015/01/15