https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=245022
Bug ID: 245022
Summary: Problem with FreeBSD NLM interoperating with Netapp
Filer after software upgrade
Product: Base System
Version: 11.2-RELEASE
Hardware: Any
OS: Any
Status: New
Severity: Affects Some People
Priority: ---
Component: kern
Assignee: [email protected]
Reporter: [email protected]
Created attachment 212663
--> https://bugs.freebsd.org/bugzilla/attachment.cgi?id=212663&action=edit
create a tunable to set the NLM client to use TCP
After upgrading the software on a Netapp Filer, serious interoperability
problems were observed between the FreeBSD NLM client and Netapp server.
(The NLM protocol is a separate protocol from NFSv3 that provides file
locking. Also known as rpc.lockd.)
Reported via email by Daniel Braniss ([email protected]).
Although the problem(s) were not completely diagnosed, it appeared to
be related to reuse of the xid in the RPC over UDP header.
Adam McDougall ([email protected]) mentioned resolving a similar
issue with the FreeBSD NLM->Netapp Filer by switching the NLM to use TCP
instead of UDP.
I have created this bug report to track this and have two simple patches
that might resolve (or make it easier to deal with) attached here.
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