Date: Mon, 30 Dec 2013 21:20:51 +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-10@freebsd.org Subject: svn commit: r260108 - stable/10/sbin/mount_nfs Message-ID: <201312302120.rBULKp9c029102@svn.freebsd.org>
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Author: rmacklem Date: Mon Dec 30 21:20:51 2013 New Revision: 260108 URL: http://svnweb.freebsd.org/changeset/base/260108 Log: MFC: r259089 Document the noncontigwr NFS mount option. This is a content change. Modified: stable/10/sbin/mount_nfs/mount_nfs.8 Directory Properties: stable/10/ (props changed) Modified: stable/10/sbin/mount_nfs/mount_nfs.8 ============================================================================== --- stable/10/sbin/mount_nfs/mount_nfs.8 Mon Dec 30 21:17:20 2013 (r260107) +++ stable/10/sbin/mount_nfs/mount_nfs.8 Mon Dec 30 21:20:51 2013 (r260108) @@ -28,7 +28,7 @@ .\" @(#)mount_nfs.8 8.3 (Berkeley) 3/29/95 .\" $FreeBSD$ .\" -.Dd July 8, 2013 +.Dd December 7, 2013 .Dt MOUNT_NFS 8 .Os .Sh NAME @@ -257,6 +257,19 @@ 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 expectedhelp
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