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From: Rick Macklem <rmacklem@FreeBSD.org>
Date: Thu, 28 Jun 2018 21:16:50 +0000 (UTC)
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Subject: svn commit: r335780 - projects/pnfs-planb-server/usr.sbin/nfsd
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Author: rmacklem
Date: Thu Jun 28 21:16:50 2018
New Revision: 335780
URL: https://svnweb.freebsd.org/changeset/base/335780

Log:
  Try and improve the description of the "#mds-exported-path" suffix in the
  nfsd.8 man page.

Modified:
  projects/pnfs-planb-server/usr.sbin/nfsd/nfsd.8

Modified: projects/pnfs-planb-server/usr.sbin/nfsd/nfsd.8
==============================================================================
--- projects/pnfs-planb-server/usr.sbin/nfsd/nfsd.8	Thu Jun 28 21:14:33 2018	(r335779)
+++ projects/pnfs-planb-server/usr.sbin/nfsd/nfsd.8	Thu Jun 28 21:16:50 2018	(r335780)
@@ -174,6 +174,17 @@ The
 .Dq mirror_level
 would normally be set to 2 to enable mirroring, but
 can be as high as NFSDEV_MAXMIRRORS.
+There must be at least
+.Dq mirror_level
+DSs for each exported file system on the MDS, as specified in the
+.Fl p
+option.
+This implies that, for the above example using "#/export1" and "#/export2",
+mirroring cannot be done.
+There would need to be two DS entries for each of "#/export1" and "#/export2"
+in order to support a
+.Dq mirror_level
+of two.
 .Pp
 If mirroring is enabled, the server must use the Flexible File
 layout.