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Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sec
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present |
Date: |
Wed, 30 Sep 2015 17:16:36 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:38.0) Gecko/20100101 Thunderbird/38.2.0 |
On 30/09/2015 16:43, Jeff Cody wrote:
> One issue is that QEMU will do mode!='existing' && sync!='full' for
> drivers that do not support backing files (raw host devices, for
> instance).
Yup, this can be used to get a mirror of future operations (the idea was
to support things such as antiviruses, where the antivirus connects to
QEMU via NBD).
I think it's okay to ignore this case, since the resulting image is
bogus anyway. What is interesting is only the stream of writes which
you can get through NBD.
Paolo
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Kevin Wolf, 2015/10/01
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Paolo Bonzini, 2015/10/01
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Kevin Wolf, 2015/10/03
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Paolo Bonzini, 2015/10/04
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Jeff Cody, 2015/10/08
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Kevin Wolf, 2015/10/08
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Jeff Cody, 2015/10/08
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Paolo Bonzini, 2015/10/08
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present, Kevin Wolf, 2015/10/08
- Re: [Qemu-devel] [PATCH 3/3] block: mirror - zero unallocated target sectors when zero init not present,
Paolo Bonzini <=