On Tue, Oct 29, 2013 at 01:05:44PM +0000, Myklebust, Trond wrote: > Imagine someone wanting to punch a 50TB hole in NTFS, for instance. It doesn't have real holes, so you'd end up needing to zero out the existing extents in that region of the file. That will take time, even with an O(nr_extents) algorithm. That behaviour is not a hole punch, and should not be multiplexed onto a whole punch on the wire command! If such a use case is important enough there should be an equivanet of the SCSI WRITE SAME command which might make some sense to be implemented async. We'd surely not support it in the Linux nfsd, though. -- To unsubscribe from this list: send the line "unsubscribe linux-nfs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
