Date: Fri, 27 Jul 2018 23:38:32 +0000 (UTC) From: Rick Macklem <rmacklem@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r336798 - head/usr.sbin/nfsd Message-ID: <201807272338.w6RNcWR8075989@repo.freebsd.org>
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Author: rmacklem Date: Fri Jul 27 23:38:31 2018 New Revision: 336798 URL: https://svnweb.freebsd.org/changeset/base/336798 Log: Update nfsd.8 for support of IPv6 addresses for hosts in the "-p" option. r336795 adds support for handling of IPv6 addresses returned by getaddrinfo(3) for DS hostnames. This updates the man page for this change. This is a content change. Modified: head/usr.sbin/nfsd/nfsd.8 Modified: head/usr.sbin/nfsd/nfsd.8 ============================================================================== --- head/usr.sbin/nfsd/nfsd.8 Fri Jul 27 23:34:10 2018 (r336797) +++ head/usr.sbin/nfsd/nfsd.8 Fri Jul 27 23:38:31 2018 (r336798) @@ -28,7 +28,7 @@ .\" @(#)nfsd.8 8.4 (Berkeley) 3/29/95 .\" $FreeBSD$ .\" -.Dd June 30, 2018 +.Dd July 27, 2018 .Dt NFSD 8 .Os .Sh NAME @@ -117,15 +117,10 @@ The .Ar pnfs_setup string is a set of fields separated by ',' characters: .Bl -tag -width Ds -Each of these fields specifies one Data Server. +Each of these fields specifies one DS. It consists of a server hostname, followed by a ':' and the directory path where the DS's data storage file system is mounted on this MDS server. -At this time, only IPv4 addresses are supported by the interface to the kernel, -so the -.Dq server hostname -must resolve to an IPv4 address and support mounts on that address. -This needs to be extended to support IPv6 addresses in the near future. This can optionally be followed by a '#' and the mds_path, which is the directory path for an exported file system on this MDS. If this is specified, it means that this DS is to be used to store data @@ -161,6 +156,18 @@ data files for and nfsv4-data1 will be used to store data files for .Dq /export2 . .El +.sp +When using IPv6 addresses for DSs +be wary of using link local addresses. +The IPv6 address for the DS is sent to the client and there is no scope +zone in it. +As such, a link local address may not work for a pNFS client to DS +TCP connection. +When parsed, +.Nm +will only use a link local address if it is the only address returned by +.Xr getaddrinfo 3 +for the DS hostname. .It Fl m Ar mirror_level This option is only meaningful when used with the .Fl p
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