Hi, On Fri, Jan 11, 2002 at 10:37:37AM +0100, eric chacron wrote: > To answer your question, the problem seems to be reproductible only in > asynchronous mode (without O_SYNC). > I have reproduced the case ( without O_SYNC) using different record sizes: > from 1 K to 64 K, but not with 512 bytes. > It makes sense that the the zeroed holes in the file are caused by the nfs > client absence of serialisation/ ordering as the file is used in extension. > With O_SYNC i haven't reproduced the same problem for the moment. Right --- that's standard unix semantics for writeback. Writes to backing store are completely unordered unless you request ordering with O_SYNC or f[data]sync. Cheers, Stephen
