X-Git-Url: https://git.decadent.org.uk/gitweb/?p=nfs-utils.git;a=blobdiff_plain;f=utils%2Fmount%2Fnfs.man;h=e66daba57886bd7ff31a9abe3ee7aa57f0cd8d77;hp=8abdb8394ead612b2597fc3cf067d42a448df48d;hb=60fd6cd0ada4f501d6d6bcbc3e14950d453c428d;hpb=f1e07c06652eb5cae1ce028cad8cd35e59f32f57

diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
index 8abdb83..e66daba 100644
--- a/utils/mount/nfs.man
+++ b/utils/mount/nfs.man
@@ -283,6 +283,28 @@ support UDP.
 .TP 1.5i
 .I udp
 Mount the NFS filesystem using the UDP protocol.
+.TP 1.5i
+.I nordirplus
+Disables NFSv3 READDIRPLUS RPCs. Use this option when
+mounting servers that don't support or have broken
+READDIRPLUS implementations.
+.TP 1.5i
+.I nosharecache
+As of kernel 2.6.18, it is no longer possible to mount the same
+same filesystem with different mount options to a new mountpoint.
+It was deemed unsafe to do so, since cached data cannot be shared
+between the two mountpoints. In consequence, files or directories
+that were common to both mountpoint subtrees could often be seen to
+be out of sync following an update.
+.br
+This option allows administrators to select the pre-2.6.18 behaviour,
+permitting the same filesystem to be mounted with different mount
+options.
+.br
+.B Beware:
+Use of this option is not recommended unless you are certain that there
+are no hard links or subtrees of this mountpoint that are mounted
+elsewhere.
 .P
 All of the non-value options have corresponding nooption forms.
 For example, nointr means don't allow file operations to be
@@ -439,6 +461,23 @@ This extracts a
 server performance penalty but it allows two different NFS clients
 to get reasonable good results when both clients are actively
 writing to common filesystem on the server.
+.TP 1.5i
+.I nosharecache
+As of kernel 2.6.18, it is no longer possible to mount the same
+same filesystem with different mount options to a new mountpoint.
+It was deemed unsafe to do so, since cached data cannot be shared
+between the two mountpoints. In consequence, files or directories
+that were common to both mountpoint subtrees could often be seen to
+be out of sync following an update.
+.br
+This option allows administrators to select the pre-2.6.18 behaviour,
+permitting the same filesystem to be mounted with different mount
+options.
+.br
+.B Beware:
+Use of this option is not recommended unless you are certain that there
+are no hard links or subtrees of this mountpoint that are mounted
+elsewhere.
 .P
 All of the non-value options have corresponding nooption forms.
 For example, nointr means don't allow file operations to be