On Tue, Apr 24, 2012 at 01:26:43AM +0900, MORITA Kazutaka wrote:
> SD_FLAG_CMD_CACHE is ignored in the older version of Sheepdog, so,
> even if we specify cache=writeback or cache=none, the data is written
> with O_DSYNC always and cannot be cached in the server's page cache or
> volatile disk cach
At Mon, 23 Apr 2012 08:08:46 +0200,
Christoph Hellwig wrote:
>
> On Fri, Apr 20, 2012 at 12:15:36PM -0700, MORITA Kazutaka wrote:
> > His patch sets the SD_FLAG_CMD_CACHE flag for writes only when the
> > user selects cache=writeback or cache=none. If SD_FLAG_CMD_CACHE is
> > not set in the reque
On Fri, Apr 20, 2012 at 12:15:36PM -0700, MORITA Kazutaka wrote:
> His patch sets the SD_FLAG_CMD_CACHE flag for writes only when the
> user selects cache=writeback or cache=none. If SD_FLAG_CMD_CACHE is
> not set in the request, Sheepdog servers are forced to flush the cache
> like FUA commands.
At Fri, 20 Apr 2012 20:05:48 +0200,
Christoph Hellwig wrote:
>
> On Tue, Apr 03, 2012 at 01:35:50AM +0800, Liu Yuan wrote:
> > From: Liu Yuan
> >
> > Flush operation is supposed to flush the write-back cache of
> > sheepdog cluster.
> >
> > By issuing flush operation, we can assure the Guest of
On Tue, Apr 03, 2012 at 01:35:50AM +0800, Liu Yuan wrote:
> From: Liu Yuan
>
> Flush operation is supposed to flush the write-back cache of
> sheepdog cluster.
>
> By issuing flush operation, we can assure the Guest of data
> reaching the sheepdog cluster storage.
How does qemu know that the ca
On 04/03/2012 04:01 AM, Michael Tokarev wrote:
> On 02.04.2012 21:35, Liu Yuan wrote:
>> From: Liu Yuan
>>
>> Flush operation is supposed to flush the write-back cache of
>> sheepdog cluster.
>>
>> By issuing flush operation, we can assure the Guest of data
>> reaching the sheepdog cluster storag
On 02.04.2012 21:35, Liu Yuan wrote:
> From: Liu Yuan
>
> Flush operation is supposed to flush the write-back cache of
> sheepdog cluster.
>
> By issuing flush operation, we can assure the Guest of data
> reaching the sheepdog cluster storage.
>
> Cc: Kevin Wolf
> Reviewd-by: MORITA Kazutaka
From: Liu Yuan
Flush operation is supposed to flush the write-back cache of
sheepdog cluster.
By issuing flush operation, we can assure the Guest of data
reaching the sheepdog cluster storage.
Cc: Kevin Wolf
Reviewd-by: MORITA Kazutaka
Signed-off-by: Liu Yuan
---
block/sheepdog.c | 50 +++
