Re: NFS writes being corrupted?

[David Holland <dholland-tech%netbsd.org@localhost>]

On Mon, Aug 03, 2015 at 02:51:37PM -0700, Jeff Rizzo wrote:
 > I need to look deeper, but a quick test writing lines of
 > ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz
 > 
 > Shows that corruption starts when the file is exactly 65536 bytes long
 > (with an 8192 byte page size), with anything that size or longer getting
 > corrupted.  It seems to be randomly garbled - same size, same bytes, but
 > shuffled around.  When I was narrowing it down, I sometimes saw random
 > corruption inserted at larger file sizes - at one point I saw short strings
 > of NUL and the string "posix2_upe" (which would appear to be a symbol?)
 > inserted at seemingly-random spots.

Does that size vary with the NFS block size?

The symptoms make me think of scrambled mbufs, if anything...

-- 
David A. Holland
dholland%netbsd.org@localhost