Date: Thu, 6 May 1999 00:38:53 -0700 (PDT) From: amor@eos.ubc.ca To: freebsd-gnats-submit@freebsd.org Subject: kern/11533: NFS v3 locks up on large file transfers Message-ID: <19990506073853.3A87114DDB@hub.freebsd.org>
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>Number: 11533
>Category: kern
>Synopsis: NFS v3 locks up on large file transfers
>Confidential: no
>Severity: critical
>Priority: high
>Responsible: freebsd-bugs
>State: open
>Quarter:
>Keywords:
>Date-Required:
>Class: sw-bug
>Submitter-Id: current-users
>Arrival-Date: Thu May 6 00:40:00 PDT 1999
>Closed-Date:
>Last-Modified:
>Originator: John Amor
>Release: release 3.1
>Organization:
Earth & Ocean Sci. Univeristy of B.C.
>Environment:
FreeBSD mach1 3.1-RELEASE FreeBSD 3.1-RELEASE #0: Mon May 3 21:02:13 PDT 1999 xxx@xxx:/usr/src/sys/compile/XXX i386
Pentium Pro180 [asus P6NP5] [3c905 10Mb half-duplex]
FreeBSD mach2 3.1-RELEASE FreeBSD 3.1-RELEASE #0: Tue May 4 14:14:42 PDT 1999 xxxx@xxxx:/usr/src/sys/compile/XXXX i386
PII-dual 350 [asus P2B-D] [3c905B 10Mb half-duplex]
>Description:
when a large file 500MB is transfer from machine1 to machine2 while
another 500MB files is transfered from machine2 to machine1.
The nfs mounts quickly locks up.
nfsstat -w 5
running on each machine quickly drop to zero when second
file is started. To clear the problem I have rebooted one of
the machines, since commands like df lockup due to the unresponsive
file system.
>How-To-Repeat:
mach2> mount mach1:/xx1 /xx1
mach1> mount mach2:/xx2 /xx2
mach1> cp /xx1/bigfile /xx2/bigfile.copy
mach2> cp /xx2/bigfile /xx1/bigfile.copy
with in 100k nfs locks up
>Fix:
mount filesytems using nfs v2 (not great solution)
>Release-Note:
>Audit-Trail:
>Unformatted:
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