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Update the man page to reflect the addition of NFSv4.2 (r355677).

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Include references to NFSv4.2 and associated RFCs.
Also clarify when a Linux client needs to set vfs.nfsd.flexlinuxhack if
a pNFS server is in use.

This is a content change.
This commit is contained in:
Rick Macklem 2019-12-20 21:25:51 +00:00
parent 2be36b3437
commit 1fd129c9ff
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=355954
1 changed files with 17 additions and 11 deletions
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28
usr.sbin/nfsd/nfsd.8
View File

@ -28,7 +28,7 @@
.\" @(#)nfsd.8 8.4 (Berkeley) 3/29/95
.\" $FreeBSD$
.\"
.Dd February 14, 2019
.Dd December 20, 2019
.Dt NFSD 8
.Os
.Sh NAME
@ -222,9 +222,15 @@ RFC1094,
.%T "NFS: Network File System Version 3 Protocol Specification" ,
RFC1813,
.%T "Network File System (NFS) Version 4 Protocol" ,
RFC3530 and
RFC7530,
.%T "Network File System (NFS) Version 4 Minor Version 1 Protocol" ,
RFC5661.
RFC5661,
.%T "Network File System (NFS) Version 4 Minor Version 2 Protocol" ,
RFC7862,
.%T "File System Extended Attributes in NFSv4" ,
RFC8276 and
.%T "Parallel NFS (pNFS) Flexible File Layout" ,
RFC8435.
.Pp
If
.Nm
@ -323,13 +329,13 @@ and then restart it, after the
.Xr gssd 8
is running.
.Pp
If mirroring is enabled via the
.Fl m
option and there are Linux clients doing NFSv4.1 mounts, those clients
need to be patched to support the
.Dq tightly coupled
variant of
the Flexible File layout or the
For a Flexible File Layout pNFS server,
if there are Linux clients doing NFSv4.1 or NFSv4.2 mounts, those
clients might need the
.Xr sysctl 8
vfs.nfsd.flexlinuxhack
must be set to one on the MDS as a workaround.
to be set to one on the MDS as a workaround.
.Pp
Linux 5.n kernels appear to have been patched such that this
.Xr sysctl 8
does not need to be set.