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From: Supriya Kannery <supriyak@linux.vnet.ibm.com>
To: Kevin Wolf <kwolf@redhat.com>
Cc: Stefan Hajnoczi <stefanha@gmail.com>,
	qemu-devel@nongnu.org, Christoph Hellwig <hch@lst.de>
Subject: Re: [Qemu-devel] [v7 Patch 4/5]Qemu: Add commandline -drive option 'hostcache'
Date: Fri, 14 Oct 2011 16:49:25 +0530	[thread overview]
Message-ID: <4E981ABD.1070301@linux.vnet.ibm.com> (raw)
In-Reply-To: <4E95A495.3050403@redhat.com>

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

  reply	other threads:[~2011-10-14 11:19 UTC|newest]

Thread overview: 16+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-11  3:10 [Qemu-devel] [v7 Patch 0/5]Qemu: Host pagecache setting from cmdline and monitor Supriya Kannery
2011-10-11  3:10 ` [Qemu-devel] [v7 Patch 1/5]Qemu: Enhance "info block" to display host cache setting Supriya Kannery
2011-10-12 14:17   ` Kevin Wolf
2011-10-14 10:47     ` Supriya Kannery
2011-10-11  3:11 ` [Qemu-devel] [v7 Patch 2/5]Qemu: Error classes for file reopen and data sync failure Supriya Kannery
2011-10-11  3:11 ` [Qemu-devel] [v7 Patch 3/5]Qemu: Cmd "block_set_hostcache" for dynamic cache change Supriya Kannery
2011-10-11  3:11 ` [Qemu-devel] [v7 Patch 4/5]Qemu: Add commandline -drive option 'hostcache' Supriya Kannery
2011-10-12 14:30   ` Kevin Wolf
2011-10-14 11:19     ` Supriya Kannery [this message]
2011-10-14 11:26       ` Kevin Wolf
2011-10-11  3:11 ` [Qemu-devel] [v7 Patch 5/5]Qemu: New struct 'BDRVReopenState' for image files reopen Supriya Kannery
2011-10-12 14:55   ` Kevin Wolf
2011-10-14 13:42     ` Supriya Kannery
2011-10-14 13:52       ` Kevin Wolf
2011-10-14 11:13   ` Stefan Hajnoczi
2011-10-14 13:45     ` Supriya Kannery

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