I see. Thanks Chuck!
On Tue, Apr 22, 2014 at 7:20 AM, Chuck Thier wrote:
> Well the short answer to that question is that it is generally a best
> practice to run a disk controller card with a persistent cache in front of
> your storage drives. When this is the case you want to turn barriers of
Well the short answer to that question is that it is generally a best
practice to run a disk controller card with a persistent cache in front of
your storage drives. When this is the case you want to turn barriers off,
otherwise they would render your cache ineffective.
If you are not running a
Hi,
I notice that the recommended way of deploying Swift is to use XFS on
the storage nodes. This XFS volume is mounted using the "nobarriers"
option.
If I'm not wrong, Swift does an fsync after every put to make sure
that the object is written to disk. But in the absence of barriers
this isn't g
