[Lustre-devel] Query to understand the Lustre request/reply message

[Nicolas Williams]

On Thu, Oct 14, 2010 at 06:38:16AM +0300, Alexey Lyashkov wrote:
> On Oct 14, 2010, at 03:28, Nicolas Williams wrote:
> > Yes, it's possible to add buffers to requests.  It's not possible to add
> > buffers to _replies_ to existing RPCs unless you know the client expects
> > those additional buffers -- existing clients expect a given maxsize for
> > each reply, and if your reply is bigger then it will get dropped.
> It is wrong for last ~1year.
> ~1year ago i add code to ptlrpc layer which a adjust buffer for reply, and resend a request.

Ah, I didn't know that was in 1.8.  Are there interop issues (with older
clients) though with sending larger replies than expected?