[Gluster-devel] Small note on 'dd' and cross platform block sizes

[Jeff Darcy]

----- Original Message -----
> On Fri, Jul 11, 2014 at 11:48:18AM +0100, Justin Clift wrote:
> > It turns out that with the 'dd' command, the block size parameter
> > (bs=) needs a bit of special treatment to work cross-platform.
> > 
> > Instead of using the 'M' suffix (eg 1M for 1MB), it's better to
> > use the k suffix.  eg 1024k for 1MB.
> 
> For the sake of completeness:
> Linux uses M for megabyte, BSD(incorrecly) uses m
> Both use k for kilobyte. This is why 1024k is better than 1M or 1m.

Does the BSD version also support status=none to make it work
silently instead of spewing block counts to stderr?  If not, I might
suggest that we switch to using our own wrapper that detects the
platform to do the appropriate uppercase/lowercase and extra
arguments vs. shell redirection in each case.