>> EXT2FS (works correctly):
 >>      0 trtr>touch file0; sleep 5; make file3    
 >>      cat file0 > file1
 >>      cat file1 > file2
 >>      cat file2 > file3
 >>      0 trtr> 
 >> 
 >> But when I remove sleep 5 it sometimes fails:

> Not surprising, because ext2fs doesn't have sub-second time resolution
> (at last in the NetBSD implementation - I don't know if this has been added
> to linux since I wrote this code).

Ok, even if nanoseconds were stored, the above results are explicable
on faster hardware.

But what about problem with LFS and TMPFS?

-- 
Best regards, Aleksey Cheusov.