IBM AS/400E Formatting the HOSTOPT (Host Options) Parameter, Additional Format Rules for the HOSTOPT (Host Options) Parameter

10. No tabs or line feeds can be used in the path name

11. All characters following the pound sign ’#’ are considered comments until the

end of the line. The only exception to this rule is the HOSTOPT parameter,

which uses the ’#’ character as a starting point for each HOSTOPT entry.

Formatting the HOSTOPT (Host Options) Parameter

In /etc/exports, you can provide additional information for each export entry

related to the remote NFS clients who will access your entry. For each remote NFS

client, you can specify the following items:

/path_name #HOSTOPT HostName=client1,

PathNameCodePage=NNN,

DataFileCodePage=NNN,

NoWaitForWrites

HostName

The name of the remote NFS client for which you are specifying additional

export options. Youshould specify this client by name in one of the lists as

a host that has access to this export entry.You can also use netgroups for

this entry.You can list multiple clients and netgroups for every entry, each

with its own list of speciﬁc export options.

For more information about the HostName option on the HOSTOPT

parameter, see “CHGNFSEXP/EXPORTFS Display”on page 31.

PathNameCodePage

The path name code page is used for the path name components of the

ﬁles exported to and mounted on the speciﬁed NFS client or netgroup. For

any clients or netgroups not speciﬁed on the HostName parameter, the

default network path name code page (ASCII) is used.

DataFileCodePage

The data ﬁle code page is used for data of the ﬁles exported to and

mounted on the speciﬁed NFS client or netgroup. For any hosts not

speciﬁed on the HostName parameter, the default network data code page

(binary, no conversion) is used.

If the entry being exported resolves to an object within the QSYS.LIB ﬁle

system and the network data ﬁle code page is speciﬁed, then data ﬁles are

opened by OS/400 Network File System Support. NFS will use the open()

API with the O_TEXTDATA and O_CODEPAGE options.

Note: See the

System API Reference,

SC41-4801 book for more details on

the open() API and the O_TEXTDATA and O_CODEPAGE options.

NoWaitForWrites

The NoWaitForWrites option speciﬁes whether write requests are handled

synchronously or asynchronously for the NFS client or netgroup name. The

absence of this option means that data will be written to disk immediately

(synchronously). If this ﬂag is used, then the data is not guaranteed to be

written to disk immediately and can be used to improve performance

(asynchronously).

Additional Format Rules for the HOSTOPT (Host Options)Parameter

1. The options must start with #HOSTOPT.There must only be one #HOSTOPT

although you could have many host names.

2. Additional host names and their options must be separated by a colon.

AppendixB. Understanding the /etc Files 95