Jon Forsberg wrote: > # dd bs=1M seek=300 count=0 of=bigfile That makes a file that consits of a single 300mb hole. (run du on it)
> If I create the loopfile with "dd bs=1M count=300 if=/dev/zero of=bigfile" > instead (which is the "normal" way to do it, I guess) everything works. > > So is this > A. A known problem/limitation in the kernel (can't use loopfiles with > holes(?)) I can't find any real documentation about loopback files and whether they should support holes. However, the D state means the kernel is in an inunteruptable sleep; presumably trying to read the hole. -- see shy jo
