i386/68460: nfs mounts lock processes in sbwait

[Steven Lawson]

>Number:         68460
>Category:       i386
>Synopsis:       nfs mounts lock processes in sbwait
>Confidential:   no
>Severity:       serious
>Priority:       medium
>Responsible:    freebsd-i386
>State:          open
>Quarter:        
>Keywords:       
>Date-Required:
>Class:          sw-bug
>Submitter-Id:   current-users
>Arrival-Date:   Mon Jun 28 23:30:17 GMT 2004
>Closed-Date:
>Last-Modified:
>Originator:     Steven Lawson
>Release:        4.10-RELEASE
>Organization:
The Jerry Brown Company
>Environment:
FreeBSD safe.jbco.com 4.10-RELEASE FreeBSD 4.10-RELEASE #0: Tue May 25 22:47:12
GMT 2004     root at perseus.cse.buffalo.edu:/usr/obj/usr/src/sys/GENERIC  i386
>Description:
NFS mounts to a local SCO box are locking up processes in sbwait.  Can reboot, do various find and ls, will lock up process pretty quickly.  Cannot kill, Ctrl-T shows "load: 0.08  cmd: ls 304 [sbwait] 0.00u 0.00s 0% 336k".  During this I can still access same mounts to SCO on old RH Linux server right next to it that I'm trying to replace.
>How-To-Repeat:
Mount a directory over nfs and do some read activity, locks up within a few minutes.  I'd be glad to provide more info if I know what to look for.  Don't know if related to talking to the SCO server, but RH Linux box has talked to it for several years.
>Fix:
      
>Release-Note:
>Audit-Trail:
>Unformatted: