NFS Mount Hangs

[Rick Macklem]

Scheffenegger, Richard <Richard.Scheffenegger at netapp.com> wrote:
>Sorry, I though this was a problem on stable/13.
>
>This is only in HEAD, stable/13 and 13.0 - never MFC'd to stable/12 or backported to >12.1
>
>> I did some reshuffling of socket-upcalls recently in the TCP stack, to prevent some race conditions with our $work in-kernel NFS server implementation.
The FreeBSD krpc/nfs definitely uses upcalls. On the server side the upcall just
"activates" a thread to service the socket (soreceive() etc).
The client side upcall does quite a bit more, including soreceive().
Timing shouldn't be a problem, so long as upcalls happen when there is data
to be received or the socket has been closed at the other end.
I test with pretty current sources and haven't seen issues.
If I do see problems, I'll be sure to let you know.;-)

rick


Are these changes in 12.1p5? This is the OS version used by the reporter of the bug.

Best regards
Michael