Date: Wed, 1 Jan 2014 22:22:01 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-9@freebsd.org Subject: svn commit: r260171 - stable/9/sbin/mount_nfs Message-ID: <201401012222.s01MM198063262@svn.freebsd.org>
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Author: rmacklem Date: Wed Jan 1 22:22:00 2014 New Revision: 260171 URL: http://svnweb.freebsd.org/changeset/base/260171 Log: MFC: r259089 Document the noncontigwr NFS mount option. This is a content change. Modified: stable/9/sbin/mount_nfs/mount_nfs.8 Directory Properties: stable/9/sbin/mount_nfs/ (props changed) Modified: stable/9/sbin/mount_nfs/mount_nfs.8 ============================================================================== --- stable/9/sbin/mount_nfs/mount_nfs.8 Wed Jan 1 22:14:49 2014 (r260170) +++ stable/9/sbin/mount_nfs/mount_nfs.8 Wed Jan 1 22:22:00 2014 (r260171) @@ -28,7 +28,7 @@ .\" @(#)mount_nfs.8 8.3 (Berkeley) 3/29/95 .\" $FreeBSD$ .\" -.Dd May 3, 2011 +.Dd December 7, 2013 .Dt MOUNT_NFS 8 .Os .Sh NAME @@ -221,6 +221,19 @@ servers on the client. Note that this option will only be honored when performing the initial mount, it will be silently ignored if used while updating the mount options. +.It Cm noncontigwr +This mount option allows the NFS client to +combine non-contiguous byte ranges being written +such that the dirty byte range becomes a superset of the bytes +that are dirty. +This reduces the number of writes significantly for software +builds. +The merging of byte ranges isn't done if the file has been file +locked, since most applications modifying a file from multiple +clients will use file locking. +As such, this option could result in a corrupted file for the +rare case of an application modifying the file from multiple +clients concurrently without using file locking. .It Cm principal For the RPCSEC_GSS security flavors, such as krb5, krb5i and krb5p, this option sets the name of the host based principal name expected
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