On Mon, Mar 06, 2017 at 12:02:01PM +0000, Bill McDuck wrote: > Hello. > > I have been testing the performance of XFS with "Flag Unwritten > Extents" enabled and disabled. Why do you disable it? It's been part of the defauly on feature set for a decade, and manually disabling it will make you run into completely untested code. There is a reason it's mandatory for v5 file systems. > > For security reasons I know XFS flags all unwritten extents by > default, so that uninitialized disk space cannot be read by the user. > In my application I actually want to have access to this uninitialized > disk space. I have been modifying the superblocks using xfs_repair to > enable this functionality. Don't do that, it's not supported for a reason. -- To unsubscribe from this list: send the line "unsubscribe linux-xfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
