Re: [PATCH] clarification about options supported by different versions

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Committed...

steved.

On 09/07/2010 05:09 AM, Guillaume Rousse wrote:
> Signed-off-by: Guillaume Rousse <Guillaume.Rousse@xxxxxxxx>
> ---
>  utils/mount/nfs.man |   50 ++++++++++++++++++++------------------------------
>  1 files changed, 20 insertions(+), 30 deletions(-)
> 
> diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
> index 3806635..fe58015 100644
> --- a/utils/mount/nfs.man
> +++ b/utils/mount/nfs.man
> @@ -3,8 +3,6 @@
>  .SH NAME
>  nfs \- fstab format and options for the
>  .B nfs
> -and
> -.B nfs4
>  file systems
>  .SH SYNOPSIS
>  .I /etc/fstab
> @@ -71,14 +69,10 @@ for details on specifying raw IPv6 addresses.
>  .P
>  The
>  .I fstype
> -field contains either "nfs" (for version 2 or version 3 NFS mounts)
> -or "nfs4" (for NFS version 4 mounts).
> +field contains "nfs", for whatever version of the protocol.
>  The
>  .B nfs
> -and
> -.B nfs4
> -file system types share similar mount options,
> -which are described below.
> +allow several mount options, which are described below.
>  .SH "MOUNT OPTIONS"
>  Refer to
>  .BR mount (8)
> @@ -89,14 +83,8 @@ specify any mount options, use the generic option
>  in
>  .IR /etc/fstab .
>  .DT
> -.SS "Valid options for either the nfs or nfs4 file system type"
> -These options are valid to use when mounting either
> -.B nfs
> -or
> -.B nfs4
> -file system types.
> -They imply the same behavior
> -and have the same default for both file system types.
> +.SS "Options supported by all versions"
> +These options are valid to use with any NFS version.
>  .TP 1.5i
>  .BR soft " / " hard
>  Determines the recovery behavior of the NFS client
> @@ -476,11 +464,9 @@ by other clients, but can impact application and server performance.
>  .IP
>  The DATA AND METADATA COHERENCE section contains a
>  detailed discussion of these trade-offs.
> -.SS "Valid options for the nfs file system type"
> +.SS "Options for versions 2 and 3 only"
>  Use these options, along with the options in the above subsection,
> -for mounting the
> -.B nfs
> -file system type.
> +for NFSv2/v3 only. They will be ignored for newer versions.
>  .TP 1.5i
>  .BI proto= netid
>  The transport protocol name and protocol family the NFS client uses
> @@ -722,11 +708,9 @@ If this option is not specified, the NFS client uses READDIRPLUS requests
>  on NFS version 3 mounts to read small directories.
>  Some applications perform better if the client uses only READDIR requests
>  for all directories.
> -.SS "Valid options for the nfs4 file system type"
> +.SS "Options for version 4 only"
>  Use these options, along with the options in the first subsection above,
> -for mounting the
> -.B nfs4
> -file system type.
> +for NFSv4 only. They will be ignored with older versions.
>  .TP 1.5i
>  .BI proto= netid
>  The transport protocol name and protocol family the NFS client uses
> @@ -823,6 +807,13 @@ In the presence of multiple client network interfaces,
>  special routing policies,
>  or atypical network topologies,
>  the exact address to use for callbacks may be nontrivial to determine.
> +.SH nfs4 FILE SYSTEM TYPE
> +The
> +.BR nfs4
> +file system type is an old syntax for specifying NFSv4 usage. It can still 
> +be used with all NFSv4-specific and common options, excepted the
> +.B nfsvers
> +mount option.
>  .SH MOUNT CONFIGURATION FILE
>  If the mount command is configured to do so, all of the mount options 
>  described in the previous section can also be configured in the 
> @@ -844,12 +835,11 @@ file system type and specify the
>  .B nfsvers=3
>  mount option.
>  To mount using NFS version 4,
> -use the
> -.B nfs4
> -file system type.
> -The
> -.B nfsvers
> -mount option is not supported for the
> +use either the
> +.B nfs
> +file system type, with the
> +.B nfsvers=4
> +mount option, or the 
>  .B nfs4
>  file system type.
>  .P
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