HP A4500A - VMEbus Single Board Computer 744... Instruction Manual

CIFS/9000 Client Release Note

Version A.01.08

Manufacturing Part Number : B8724-90023

AR0902

U.S.A.

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CIFS/9000 Client A.01.08

Announcement

Chapter 1 3

1 CIFS/9000 Client A.01.08

Announcement

NOTE For the latest information on the CIFS/9000 Client, refer to the

CIFS/9000 product documentation in the Networking and

Communications section of the HP documentation website:

http://docs.hp.com/

With CIFS/9000, Hewlett-Packard provides a Common Internet File

System (CIFS) implementation on HP-UX 11.i. CIFS is the Microsoft

protocol for remote ﬁle access. It is built into all recent Windows

operating systems, including Windows 95, 98, NT, and 2000. By

providing both server and client, CIFS/9000 provides ﬁle and print inter

operability for environments with any mix of UNIX and Windows

platforms.

The CIFS/9000 Server allows Microsoft and CIFS/9000 Clients to access

the server’s ﬁle system. The CIFS/9000 Client can mount ﬁle systems

made shareable by Windows, CIFS/9000 servers, or ASU/9000.

CIFS/9000 also provides PAM NTLM, which is used to authenticate

users logging into HP-UX system against Windows NT servers.

CIFS/9000 Client A.01.08

About This Document

Chapter 14

About This Document

The technical contents of this document are identical to that of the

IA1122 (June 2002) release.

As of this release, the A.01.08 version of the CIFS Client supports the

following versions of HP-UX:

• HP-UX 11.0

• HP-UX 11i

• HP-UX 11.22

CIFS/9000 Client A.01.08

What’s New in Version A.01.08?

Chapter 1 5

What’s New in Version A.01.08?

This release contains the following enhancements:

• Error reporting by PAM-NTLM

Error reporting by the PAM-NTLM module has been enhanced such

that if PAM-NTLM cannot connect to the password server, an

appropriate message is written to syslog.

CIFS/9000 Client A.01.08

Features and Fixes in Recent Releases

Chapter 16

Features and Fixes in Recent Releases

The following features and ﬁxes are listed, beginning with the most

recent.

• PAM-NTLM can fail to handle Unix password expiration

A ﬁx has been implemented for a problem wherein a user with an

expired Unix password can login to the host system without being

forced to change their expired password. This occurs only if the

recommended “stacked” conﬁguration of libpam_ntlm.1 and

libpam_unix.1 is used and the user is not authenticated by the

NTLM server. With this ﬁx, PAM-UNIX forces the user to change

their expired Unix password, as expected.

• Disconnected user sessions cannot reconnect

This enhancement enables user connections that have been

terminated by the server to be automatically re-established when the

user attempts to access the server.

• Logﬁle truncation at max size does not work

This ﬁx enforces the maximum logﬁle size of 50 Mbytes. If the logﬁle

reaches this size, it is saved with .prev appended to its name

(overwriting any other previously saved copy). The logﬁle is then

restarted from 0 bytes.

• Incorrect timestamp after DST switch

This ﬁx improves the synchronization of ﬁle timestamps between

CIFS/9000 clients and Windows servers, when the time changes

between standard and daylight savings time.

• NetBIOS scope broken if scope has embedded period (“.”) character(s)

This ﬁxes a bug in the parsing of NetBIOS scope. Scope is an old

feature of the CIFS protocol and its use is discouraged.

• Some Japanese multibyte characters cannot be used

The Japanese-language character-map ﬁles for ShiftJIS encoding

have been modiﬁed to include symbols for integers-in-circles in the

range [1 - 20], and various mathematical, Katakana and other

symbols. 74 character mappings have been added.

• Latest revision of CIFS Unix Extensions, v2.1

CIFS/9000 Client A.01.08

Features and Fixes in Recent Releases

Chapter 1 7

The Hewlett-Packard-authored CIFS Unix Extensions enable

standard Unix ﬁle system semantics, such as symbolic links, ﬁle

ownership and permissions to be implemented within the CIFS

protocol. The latest revision of the speciﬁcation, developed in

collaboration with the Samba open-source project, provides greater

inter operability through a new model for handling ﬁle sizes across

platforms.

It is highly recommended that customers upgrade to version A.01.07

of the CIFS/9000 Client if they will be connecting to servers that

support the v2.1 speciﬁcation. These servers include CIFS/9000

Servers, version A.01.07 and Samba Servers, version 2.2.3. The

implementation of the v2.1 speciﬁcation, in version A.01.07 of the

CIFS/9000 Client, is backwards compatible with previous

implementations of the speciﬁcation in versions A.01.07, and earlier,

of the CIFS/9000 Server.

• ASCII decode of hexadecimal NetBIOS traces

The CIFS Client “netbiosTrace” log level option now also displays the

ASCII equivalent of the default hexadecimal byte-stream. Users are

reminded that log levels should be left at their default settings

unless they are required for troubleshooting since increased log

levels impede performance.

• A change has been implemented in the caching of ﬁle attributes that

improves synchronization of directory listings on the client with

actual ﬁle attributes on the server.

• The section on conﬁguring the PAM-NTLM module in the Installing

and Administering the CIFS/9000 Client manual contains new and

updated information regarding the use of password servers and

WINS servers. HP suggests incorporating the wins server parameter

into your existing smb.conf ﬁle as shown in the new version of

smb.conf.default. These ﬁles are located in /etc/opt/cifsclient/pam.

• Default value increased for SMB time-outs

The default conﬁgured value for requestTimeout has been increased

from 20 seconds to 60 seconds. For slow networks, or environments

with slow servers or links, this helps prevent the CIFS/9000 client

from entering an unstable state that can result when a connection is

dropped due to an unanswered SMB request.

CIFS/9000 Client A.01.08

Features and Fixes in Recent Releases

Chapter 18

• Duplicate NFS requests ﬁltered by the CIFS/9000 Client

This improves reliability of the NFS interface to the CIFS/9000

client.

• NFS attribute-caching is now conﬁgurable

This enhancement allows you to turn on NFS attribute caching,

which can improve performance of certain operations, such as

creating tar(1) archives of large numbers of ﬁles residing on

mounted CIFS ﬁle systems. The default setting is

nfsAttributeCaching = no, which maintains the same behavior as

in previous releases.

• Korean Language support

A new character mapping ﬁle, unimap-eucKR.cfg, allows for support

of localized Korean HP-UX systems with the CIFS/9000 client. See

the Installing and Administering the CIFS/9000 Client manual for

an explanation of how to conﬁgure character-map ﬁles.

Other Information

NOTE The following information about the mountall(1M) command applies

only to HP-UX versions B.11.00 and B.11.11.

A new version of the HP-UX mountall(1M) command has been issued as

patch PHCO_24777. This patch ﬁxes two problems that can occur in any

release of the CIFS Client. The problems arise when there are CIFS

entries in /etc/fstab and involve extraneous error or warning messages.

In one case, if the CIFS Client is conﬁgured to start at boot, a misleading

error is placed in /etc/rc.log. The message will resemble the following:

Mount file systems

Output from “/sbin/rc1.d/S100localmount start”:

----------------------------

mountall: cannot mount server:/share

mountall: diagnostics from mount

ipcclient: error connecting to daemon: [239] Connection

refused

ipcclient: CIFS Client is down.

CIFS/9000 Client A.01.08

Features and Fixes in Recent Releases

Chapter 1 9

In another case, swinstall, when used to install any software, will stop

or exit, forcing the user to set mount_all_filesystems=false.

The patch is available at either of these web sites:

Americas and Asia-Paciﬁc: http://us-support.external.hp.com/

Europe: http://europe-support.external.hp.com/

Troubleshooting Information for PAM-NTLM

• If you are having difﬁculty accessing the password server conﬁgured

in smb.conf, PAM-NTLM can utilize an lmhosts ﬁle on the local

system to look up its address. To utilize this functionality, create the

ﬁle, /etc/opt/samba/lmhosts, containing entries, one per line, in the

following format where netbios_name is the password server used by

PAM-NTLM.

ip_address <one or more tabs or spaces> netbios_name

• If you are going to remove the PAM-NTLM ﬁleset (or the entire

CIFS/9000 Client) from your system, ensure that all references to the

libpam_ntlm.1 library have been removed from /etc/pam.conf. Your

system can become inaccessible if PAM-NTLM is conﬁgured in

/etc/pam.conf but the PAM-NTLM libraries are removed from the

system.

• Use caution when editing /etc/pam.conf. You should have a good

understanding of the PAM framework before modifying this ﬁle. A

misconﬁgured /etc/pam.conf can make the system inaccessible or

cause a serious security breach, such as allowing root access to

anyone, without a password. See the reference to pam.conf in section

4 of the HP-UX manpages and in the PAM-NTLM Conﬁguration

section in Installing and Administering the CIFS/9000 Client.

Recommended Conﬁguration Values

HP recommends changing the value of the following three conﬁguration

parameters to their new default values:

•runAsUser

•requestTimeout

•nfsAttributeCaching (you will need to add this one)

CIFS/9000 Client A.01.08

Features and Fixes in Recent Releases

Chapter 110

You can either compare the new default ﬁle,

/etc/opt/cifsclient.cfg.default, to your existing cifsclient.cfg, or make the

modiﬁcations manually. Leave the cifsclient.cfg.default ﬁle unchanged

and use it as a reference.

NOTE If you have not customized your conﬁguration ﬁle in any way, you can

simply copy cifsclient.cfg.default over your existing cifsclient.cfg.

Use the following instructions to change to the new conﬁguration

parameters:

1. Change the value of runAsUser to runAsUser = “root”.runAsUser

is in the global settings near the beginning of the ﬁle. Changing this

value to = ”root” allows the CIFS/9000 client to create a core ﬁle in

case of an unexpected abort.

2. Change the value of requestTimeout to 60 seconds (the value is

speciﬁed in milliseconds, so requestTimeout = 60000).

requestTimeout is in the “defaultServer = {...}” section at

approximately line 208.

3. Add the following nfsAttributeCaching entry in the

“defaultServer” section: nfsAttributeCaching = no. Adding

this value will have no effect if you are not upgrading to the current

version of the CIFS/9000 client. nfsAttributeCaching can = yes or

no.

Beneﬁts and Features

See the Installing and Administering the CIFS/9000 Client manual for

details on the following features. The latest version can be found at

http://docs.hp.com

• Integration with Unix mount commands

The mount(1M)and umount(1M)commands can now be used for

operations on CIFS ﬁle systems.

• Support for Internationalized Clients

A variety of internationalized clients can be supported with the

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