Re: [Qemu-devel] [RFC PATCH] replication agent module

[Ori Mamluk]

> In addition, I don't see that the listener thread holds any lock while
it reads the image. I guess that during that period the guest runs and may
race w/ this new thread.

Yes - I mentioned that in the patch mail as one of the open issues. Can
you direct me to the lock I need? The function I call from a new thread
context is bdrv_aio_readv.

-----Original Message-----
From: Dor Laor [mailto:address@hidden
Sent: Tuesday, February 07, 2012 2:25 PM
To: Anthony Liguori
Cc: Ori Mamluk; Kevin Wolf; address@hidden
Subject: Re: [Qemu-devel] [RFC PATCH] replication agent module

On 02/07/2012 02:12 PM, Anthony Liguori wrote:
> Hi,
>
> On 02/07/2012 04:29 AM, Ori Mamluk wrote:
>> Repagent is a new module that allows an external replication system
>> to replicate a volume of a Qemu VM.
>>
>> This RFC patch adds the repagent client module to Qemu.
>
> Please read http://wiki.qemu.org/Contribute/SubmitAPatch
>
> In particular, use a tool like git-send-email and split this patch up
> into more manageable chunks.
>
> Is there an Open Source rehub available? As a project policy, adding
> external APIs specifically for proprietary software is not something
> we're willing to do.
>
> Regards,
>
> Anthony Liguori

In addition, I don't see that the listener thread holds any lock while it
reads the image. I guess that during that period the guest runs and may
race w/ this new thread.

About image ID for the replication hub, you can use the VM's pid or VM's
uuid paired w/ the specific disk uuid

Thanks,
Dor