* [Qemu-devel] Current State of Block Filter
@ 2014-07-15 14:49 Wolfgang Richter
2014-07-15 20:57 ` Benoît Canet
0 siblings, 1 reply; 2+ messages in thread
From: Wolfgang Richter @ 2014-07-15 14:49 UTC (permalink / raw)
To: qemu-devel, Stefan Hajnoczi, benoit.canet, Paolo Bonzini,
Kevin Wolf
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The way I see block filter currently implemented is as a special block
device
with `is_filter` set to true.
Is this a correct characterization of the current incarnation?
If so, I was wondering if it is possible to "insert" a block filter layer
on top
of an existing block device once QEMU is executing (via QMP commands)?
It seems possible to add block filter managed block devices, but I don't
think
I see a way of adding a block filter to an existing block device.
--
Wolf
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^ permalink raw reply [flat|nested] 2+ messages in thread
* Re: [Qemu-devel] Current State of Block Filter
2014-07-15 14:49 [Qemu-devel] Current State of Block Filter Wolfgang Richter
@ 2014-07-15 20:57 ` Benoît Canet
0 siblings, 0 replies; 2+ messages in thread
From: Benoît Canet @ 2014-07-15 20:57 UTC (permalink / raw)
To: Wolfgang Richter
Cc: benoit.canet, Stefan Hajnoczi, qemu-devel, Kevin Wolf,
Paolo Bonzini
The Tuesday 15 Jul 2014 à 10:49:31 (-0400), Wolfgang Richter wrote :
> The way I see block filter currently implemented is as a special block
> device
> with `is_filter` set to true.
>
> Is this a correct characterization of the current incarnation?
Yes,
>
> If so, I was wondering if it is possible to "insert" a block filter layer
> on top
> of an existing block device once QEMU is executing (via QMP commands)?
No,
We would like to achieve that be we didn't have a way to do that while respecting
all the requirements.
>
> It seems possible to add block filter managed block devices, but I don't
> think
> I see a way of adding a block filter to an existing block device.
No way to do so right now.
Best regards
Benoît
>
> --
> Wolf
^ permalink raw reply [flat|nested] 2+ messages in thread
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