From owner-freebsd-bugs@FreeBSD.ORG Fri Sep 24 11:40:03 2010 Return-Path: Delivered-To: freebsd-bugs@hub.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 2DFA71065745 for ; Fri, 24 Sep 2010 11:40:03 +0000 (UTC) (envelope-from gnats@FreeBSD.org) Received: from freefall.freebsd.org (freefall.freebsd.org [IPv6:2001:4f8:fff6::28]) by mx1.freebsd.org (Postfix) with ESMTP id E55AC8FC22 for ; Fri, 24 Sep 2010 11:40:02 +0000 (UTC) Received: from freefall.freebsd.org (localhost [127.0.0.1]) by freefall.freebsd.org (8.14.4/8.14.4) with ESMTP id o8OBe2Er003311 for ; Fri, 24 Sep 2010 11:40:02 GMT (envelope-from gnats@freefall.freebsd.org) Received: (from gnats@localhost) by freefall.freebsd.org (8.14.4/8.14.4/Submit) id o8OBe2Ku003310; Fri, 24 Sep 2010 11:40:02 GMT (envelope-from gnats) Resent-Date: Fri, 24 Sep 2010 11:40:02 GMT Resent-Message-Id: <201009241140.o8OBe2Ku003310@freefall.freebsd.org> Resent-From: FreeBSD-gnats-submit@FreeBSD.org (GNATS Filer) Resent-To: freebsd-bugs@FreeBSD.org Resent-Reply-To: FreeBSD-gnats-submit@FreeBSD.org, Robert Schulze Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E6F611065670 for ; Fri, 24 Sep 2010 11:34:45 +0000 (UTC) (envelope-from nobody@FreeBSD.org) Received: from www.freebsd.org (www.freebsd.org [IPv6:2001:4f8:fff6::21]) by mx1.freebsd.org (Postfix) with ESMTP id D61468FC17 for ; Fri, 24 Sep 2010 11:34:45 +0000 (UTC) Received: from www.freebsd.org (localhost [127.0.0.1]) by www.freebsd.org (8.14.3/8.14.3) with ESMTP id o8OBYjIc077547 for ; Fri, 24 Sep 2010 11:34:45 GMT (envelope-from nobody@www.freebsd.org) Received: (from nobody@localhost) by www.freebsd.org (8.14.3/8.14.3/Submit) id o8OBYjiM077546; Fri, 24 Sep 2010 11:34:45 GMT (envelope-from nobody) Message-Id: <201009241134.o8OBYjiM077546@www.freebsd.org> Date: Fri, 24 Sep 2010 11:34:45 GMT From: Robert Schulze To: freebsd-gnats-submit@FreeBSD.org X-Send-Pr-Version: www-3.1 Cc: Subject: misc/150910: wsize=16384 on udp nfs mount unusable X-BeenThere: freebsd-bugs@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Bug reports List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 24 Sep 2010 11:40:03 -0000 >Number: 150910 >Category: misc >Synopsis: wsize=16384 on udp nfs mount unusable >Confidential: no >Severity: non-critical >Priority: low >Responsible: freebsd-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Fri Sep 24 11:40:02 UTC 2010 >Closed-Date: >Last-Modified: >Originator: Robert Schulze >Release: 8.1-RELEASE-p1 >Organization: >Environment: FreeBSD xxxxx 8.1-RELEASE-p1 FreeBSD 8.1-RELEASE-p1 #0: Wed Sep 22 10:38:45 CEST 2010 root@xxxxx:/usr/obj/usr/src/sys/WEB amd64 >Description: Mounting an NFS filesystem with a large value for wsize results in unexpected behaviour. Before analysis, I got strange errors from vi like "close: permission denied" or "no space left on device" when editing a large textfile and having /var/tmp nfs mounted, although there was enough space. The client is 8.1-RELEASE-p1, the server 8.0-RELEASE-p3. Both use nfs version 3. >How-To-Repeat: # mount_nfs -o noatime,udp,wsize=16384 10.0.0.xx:/var/tmp /var/tmp # dd if=/dev/zero of=/var/tmp/foo bs=2M count=100 does not return to prompt # dmesg nfs server 10.0.0.xx:/var/tmp: not responding nfs server 10.0.0.xx:/var/tmp: not responding nfs server 10.0.0.xx:/var/tmp: not responding nfs server 10.0.0.xx:/var/tmp: not responding nfs server 10.0.0.xx:/var/tmp: not responding # top dd in state "nfsaio" # umount -f /var/tmp # mount_nfs -o noatime,udp,wsize=8192 10.0.0.xx:/var/tmp /var/tmp # dd if=/dev/zero of=/var/tmp/foo bs=2M count=100 100+0 records in 100+0 records out 209715200 bytes transferred in 3.897668 secs (53805303 bytes/sec) >Fix: >Release-Note: >Audit-Trail: >Unformatted: