Re: [Qemu-devel] [PATCH] qemu-iotests: Add "-c <cache-mode>" to check

[Kevin Wolf]

Am 18.11.2013 um 16:32 hat Stefan Hajnoczi geschrieben:
> On Thu, Nov 14, 2013 at 10:24:04AM +0800, Fam Zheng wrote:
> > The default cache mode for drive options is changed to writethrough, and
> > overridable with "./check -c <mode>".
> > 
> > Signed-off-by: Fam Zheng <address@hidden>
> > ---
> >  tests/qemu-iotests/common     | 13 ++++++++++++-
> >  tests/qemu-iotests/iotests.py |  3 ++-
> >  2 files changed, 14 insertions(+), 2 deletions(-)
> 
> BTW, I looked back at Kevin's reply to your earlier patch and saw he
> suggested making the default "writethrough".
> 
> Kevin: Any reason not to use "writeback" by default?

I'm not opposed to changing the default in a second step. It's just that
writethrough is the default today and tests not respecting this are
buggy. So the incremental fix is to make them obey the global setting,
and then that setting can be tweaked in a second step.

Kevin