On Tue, May 28, 2013 at 04:49:31PM -0500, Ben Myers wrote: > On Mon, May 27, 2013 at 04:38:24PM +1000, Dave Chinner wrote: > > From: Dave Chinner <dchinner@xxxxxxxxxx> > > > > Currently, swapping extents from one inode to another is a simple > > act of switching data and attribute forks from one inode to another. > > This, unfortunately in no longer so simple with CRC enabled > > filesystems as there is owner information embedded into the BMBT > > blocks that are swapped between inodes. Hence swapping the forks > > between inodes results in the inodes having mapping blocks that > > point to the wrong owner and hence are considered corrupt. > > > > To fix this we need an extent tree block or record based swap > > algorithm so that the BMBT block owner information can be updated > > atomically in the swap transaction. This is a significant piece of > > new work, so for the moment simply don't allow swap extent > > operations to succeed on CRC enabled filesystems. > > > > Signed-off-by: Dave Chinner <dchinner@xxxxxxxxxx> > > I believe we do want to have functional swap extents for crc enabled > filesystems. Of course. > But this is fine as long as it is temporary. It is. Cheers, Dave. -- Dave Chinner david@xxxxxxxxxxxxx _______________________________________________ xfs mailing list xfs@xxxxxxxxxxx http://oss.sgi.com/mailman/listinfo/xfs
