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Date: Fri, 14 Oct 2011 16:49:25 +0530
From: Supriya Kannery <supriyak@linux.vnet.ibm.com>
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Subject: Re: [Qemu-devel] [v7 Patch 4/5]Qemu: Add commandline -drive option
 'hostcache'
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To: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>, qemu-devel@nongnu.org, Christoph Hellwig <hch@lst.de>

On 10/12/2011 08:00 PM, Kevin Wolf wrote:
> Am 11.10.2011 05:11, schrieb Supriya Kannery:
>> qemu command option 'hostcache' added to -drive for block devices.
>> While starting a VM from qemu commandline, this option can be used
>> for setting host cache usage for block data access. Simultaneous
>> use of 'hostcache' and 'cache' options not allowed.
>>
>> Signed-off-by: Supriya Kannery<supriyak@linux.vnet.ibm.com>
>
> I'm not sure if introducing this alone makes sense. I think I would only
> do it when we introduce more options that allow replacing all cache=...
> options by other parameters.
>

Can we do transition to alternatives for 'cache=' in a phased manner?
Until all other params are ready, we can allow hostcache (as well
as other params as and when they are ready) in cmdline with the
condition that 'cache=x', if specified, overrides these params.
Once we have all other params ready, 'cache=' can be replaced completely.

thanks, Supriya