Update nfs(5) manpage - timeo for NFS/TCP

[nfs-utils.git] / utils / mount / nfs.man

diff --git a/utils/mount/nfs.man b/utils/mount/nfs.man
index 6152235053c1be18168bee4080fa9634768b34fc..ce40933b2b42b2d503831c1de43c16d82608c6b6 100644 (file)
--- a/utils/mount/nfs.man
+++ b/utils/mount/nfs.man
@@ -46,11 +46,10 @@ files on this mount point.
 The fifth and sixth fields on each line are not used
 by NFS, thus conventionally each contain the digit zero. For example:
 .P
 The fifth and sixth fields on each line are not used
 by NFS, thus conventionally each contain the digit zero. For example:
 .P

-.SP
-.NF
-.TA 2.5i +0.75i +0.75i +1.0i
+.nf
+.ta 8n +14n +14n +9n +20n

        server:path     /mountpoint     fstype  option,option,...       0 0
        server:path     /mountpoint     fstype  option,option,...       0 0

-.FI
+.fi

 .P
 The server's hostname and export pathname
 are separated by a colon, while
 .P
 The server's hostname and export pathname
 are separated by a colon, while


@@ -113,12 +112,16 @@ option may mitigate some of the risks of using the
 option.
 .TP 1.5i
 .BI timeo= n
 option.
 .TP 1.5i
 .BI timeo= n

-The time (in tenths of a second) the NFS client waits for a
-response before it retries an NFS request. If this
-option is not specified, requests are retried every
-60 seconds for NFS over TCP.
-The NFS client does not perform any kind of timeout backoff
-for NFS over TCP.
+The time in deciseconds (tenths of a second) the NFS client waits for a
+response before it retries an NFS request.
+.IP
+For NFS over TCP the default
+.B timeo
+value is 600 (60 seconds).
+The NFS client performs linear backoff: After each retransmission the 
+timeout is increased by
+.BR timeo 
+up to the maximum of 600 seconds.

 .IP
 However, for NFS over UDP, the client uses an adaptive
 algorithm to estimate an appropriate timeout value for frequently used
 .IP
 However, for NFS over UDP, the client uses an adaptive
 algorithm to estimate an appropriate timeout value for frequently used


@@ -900,40 +903,40 @@ The following example from an
 file causes the mount command to negotiate
 reasonable defaults for NFS behavior.
 .P
 file causes the mount command to negotiate
 reasonable defaults for NFS behavior.
 .P

-.NF
-.TA 2.5i +0.7i +0.7i +.7i
+.nf
+.ta 8n +16n +6n +6n +30n

        server:/export  /mnt    nfs     defaults        0 0
        server:/export  /mnt    nfs     defaults        0 0

-.FI
+.fi

 .P
 Here is an example from an /etc/fstab file for an NFS version 2 mount over UDP.
 .P
 .P
 Here is an example from an /etc/fstab file for an NFS version 2 mount over UDP.
 .P

-.NF
-.TA 2.5i +0.7i +0.7i +.7i
+.nf
+.ta 8n +16n +6n +6n +30n

        server:/export  /mnt    nfs     nfsvers=2,proto=udp     0 0
        server:/export  /mnt    nfs     nfsvers=2,proto=udp     0 0

-.FI
+.fi

 .P
 Try this example to mount using NFS version 4 over TCP
 with Kerberos 5 mutual authentication.
 .P
 .P
 Try this example to mount using NFS version 4 over TCP
 with Kerberos 5 mutual authentication.
 .P

-.NF
-.TA 2.5i +0.7i +0.7i +.7i
+.nf
+.ta 8n +16n +6n +6n +30n

        server:/export  /mnt    nfs4    sec=krb5        0 0
        server:/export  /mnt    nfs4    sec=krb5        0 0

-.FI
+.fi

 .P
 This example can be used to mount /usr over NFS.
 .P
 .P
 This example can be used to mount /usr over NFS.
 .P

-.NF
-.TA 2.5i +0.7i +0.7i +.7i
+.nf
+.ta 8n +16n +6n +6n +30n

        server:/export  /usr    nfs     ro,nolock,nocto,actimeo=3600    0 0
        server:/export  /usr    nfs     ro,nolock,nocto,actimeo=3600    0 0

-.FI
+.fi

 .P
 This example shows how to mount an NFS server
 using a raw IPv6 link-local address.
 .P
 .P
 This example shows how to mount an NFS server
 using a raw IPv6 link-local address.
 .P

-.NF
-.TA 2.5i +0.7i +0.7i +.7i
+.nf
+.ta 8n +40n +5n +4n +9n

        [fe80::215:c5ff:fb3e:e2b1%eth0]:/export /mnt    nfs     defaults        0 0
        [fe80::215:c5ff:fb3e:e2b1%eth0]:/export /mnt    nfs     defaults        0 0

-.FI
+.fi

 .SH "TRANSPORT METHODS"
 NFS clients send requests to NFS servers via
 Remote Procedure Calls, or
 .SH "TRANSPORT METHODS"
 NFS clients send requests to NFS servers via
 Remote Procedure Calls, or