[sheepdog] [PATCH v2] collie: don't roundup vdi size

[Liu Yuan]

On 05/21/2013 08:51 PM, Liu Yuan wrote:
> On 05/21/2013 08:44 PM, MORITA Kazutaka wrote:
>> Yes.  Can you prepare a patch to drop O_DIRECT from the open flag when
>> offset and length are not sector aligned?  I think the patch should be
>> in the same series with this one.
> 
> Not all the system support diretio. I am wondering if we can do the
> trick in the collie? Collie just do a block-aligned read/write, but
> return the right thing for read?

Oops, what I meant is that switching from directio to buffered IO is too
costy, directio is very useful for running many VMs that don't consume
memory much and get a consistent performance.

Thanks,
Yuan