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author | Rick Macklem <rmacklem@FreeBSD.org> | 2013-12-08 00:59:04 +0000 |
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committer | Rick Macklem <rmacklem@FreeBSD.org> | 2013-12-08 00:59:04 +0000 |
commit | a8e2866ccdf178e78ce351f462e5b37af05d727c (patch) | |
tree | 3f43a06025f27e88df56a0e8c02c07e1b7b50bb5 /sbin/mount_nfs/mount_nfs.8 | |
parent | 37d5a7cdf89c9a340e0fe3189edaac5e200ded93 (diff) | |
download | src-a8e2866ccdf178e78ce351f462e5b37af05d727c.tar.gz src-a8e2866ccdf178e78ce351f462e5b37af05d727c.zip |
Document the noncontigwr NFS mount option.
This is a content change.
MFC after: 3 weeks
Notes
Notes:
svn path=/head/; revision=259089
Diffstat (limited to 'sbin/mount_nfs/mount_nfs.8')
-rw-r--r-- | sbin/mount_nfs/mount_nfs.8 | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/sbin/mount_nfs/mount_nfs.8 b/sbin/mount_nfs/mount_nfs.8 index 216b24845fbc..da11c29eeaa1 100644 --- a/sbin/mount_nfs/mount_nfs.8 +++ b/sbin/mount_nfs/mount_nfs.8 @@ -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 expected |