[sheepdog] [PATCH] sheep: make epoch_log_read() clean

[MORITA Kazutaka]

At Tue, 19 Mar 2013 10:04:46 +0900,
Hitoshi Mitake wrote:
> 
> At Mon, 18 Mar 2013 16:55:00 +0900,
> MORITA Kazutaka wrote:
> > 
> > > diff --git a/include/internal_proto.h b/include/internal_proto.h
> > > index f237a86..6b3866d 100644
> > > --- a/include/internal_proto.h
> > > +++ b/include/internal_proto.h
> > > @@ -191,7 +191,7 @@ struct sd_node {
> > >  
> > >  struct epoch_log {
> > >  	uint64_t ctime;
> > > -	uint64_t time;
> > > +	time_t time;
> > 
> > Can this guarantee that struct epoch_log is aligned to 64 bit
> > boundaries?
> 
> It cannot guarantee the alignment. I'll fix in the next version.
> BTW, where does the constraint of alignment come from?

On-disk format and network protocol must be 64 bit aligned.  Otherwise
we cannot share them between different architectures.  Try
sizeof(struct epoch_log) on 32 bit and 64 bit machines after applying
the above change.

Thanks,

Kazutaka