kern/88833: NFS mounts stuck

Roman V. Palagin romanp at
Fri Nov 11 02:10:20 PST 2005

>Number:         88833
>Category:       kern
>Synopsis:       NFS mounts stuck
>Confidential:   no
>Severity:       critical
>Priority:       high
>Responsible:    freebsd-bugs
>State:          open
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Fri Nov 11 10:10:18 GMT 2005
>Originator:     Roman V. Palagin
>Release:        FreeBSD 6.0-20051108-STABLE i386
System: FreeBSD 6.0-20051108-STABLE FreeBSD 6.0-20051108-STABLE #0: Tue Nov 8 12:43:38 UTC 2005 romanp at i386
NFS server: Solaris 10/IA32

Same as described in

but for "simple" mounts. Solaris NFS server tends to close connection
after some period of inactivity, but FreeBSD NFS client doesn't close
local socket and try to send data over existing half-closed connection.


Mount fs via NFS-TCP from Solaris server, wait some time and you
will see connection to server in CLOSE_WAIT state. From now all
ops on mounted fs will stuck.

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