Re: GSS sequence number window

["J. Bruce Fields" <bfields@fieldses.org>]

On Tue, Jun 06, 2017 at 03:35:23PM -0400, Chuck Lever wrote:
> I filed https://bugzilla.linux-nfs.org/show_bug.cgi?id=306
> 
> To check memory allocation latency, I could always construct
> a framework around kmalloc and alloc_page.
> 
> 
> I've also found some bad behavior around proto=rdma,sec=krb5i.
> When I run a heavy I/O workload (fio, for example), every so
> often a read operation fails with EIO. I dug into it a little
> and MIC verification fails for these replies on the client.

Do we still have the problem that the read data can change between the
time we calculate the MIC and the time we transmit the data to the
client?

--b.

> 
> I filed https://bugzilla.linux-nfs.org/show_bug.cgi?id=307
> to document this second issue.
> 
> I'm not sure what a next step would be. My suspicion is that
> either the server or the client is mishandling the RPC reply
> buffer, which causes the checksums to be different. Not sure
> why this would be so intermittent, though.
> 
> 
> --
> Chuck Lever
> 
>