On Tue, Mar 27, 2012 at 01:03:09PM -0400, Christoph Hellwig wrote: > On Tue, Mar 27, 2012 at 12:19:41PM -0400, Vivek Goyal wrote: > > So xfs either need to resort to similar optimizaiton where IO type from > > both the process context is of same type or try to do all the IO from > > one process context. > > All XFS log I/O is marked SYNC and (FUA and/or FLUSH). Not if the filesystem is mounted nobarrier, as is recommended for filesystems on hardware RAID with BBWCs.... Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs