nsdb-list (8) - Linux Manuals

nsdb-list: list file set name and location entries on an NSDB

NAME

nsdb-list - list file set name and location entries on an NSDB

SYNOPSIS

nsdb-list [-?d] [-e nce] [-l nsdbname] [-r nsdbport]

INTRODUCTION

RFC 5716 introduces the Federated File System (FedFS, for short). FedFS is an extensible standardized mechanism by which system administrators construct a coherent namespace across multiple file servers using file system referrals. For further details, see fedfs(7).

The bulk of FedFS junction information in a FedFS domain is stored on one or more LDAP servers. These servers are known as namespace databases, or NSDBs, for short.

FedFS-enabled file servers and clients access the information stored on NSDBs via standard LDAP queries. FedFS-enabled file servers use these queries to resolve FedFS junctions. FedFS administrators use them to manage information about file sets contained in a FedFS domain name space.

DESCRIPTION

The nsdb-list(8) command is part of a collection of low-level single-use programs that is intended for testing the NSDB protocol or for use in scripts. It retrieves the list of file set name and location records stored on an NSDB under one NSDB Container Entry.

OPTIONS

-d, --debug

Specifies that debugging messages be produced during operation.

-?, --help

Prints an nsdb-list(8) version and usage message on stderr, then exits.

-l, --nsdbname=NSDB-hostname

Specifies the hostname of the NSDB to enumerate. If the --nsdbname option is not specified, the value of the FEDFS_NSDB_HOST environment variable is consulted. If the variable is not set and the --nsdbname option is not specified, the nsdb-list(8) command fails.

-r, --nsdbport=NSDB-port

Specifies the IP port of the NSDB to enumerate. If the --nsdbport option is not specified, the value of the FEDFS_NSDB_PORT environment variable is consulted. The default value if the variable is not set is 389.

-e, --nce=NSDB-container-entry

Limits the query to a particular NSDB Container Entry on the target NSDB. If the --nce option is not specified, the value of the FEDFS_NSDB_NCE environment variable is consulted. If the variable is not set and the --nce option is not specified, or the specified NCE does not exist on the target NSDB, the nsdb-list(8) command fails.

EXIT CODES

The NSDB returns a value that reflects the success of the requested operation.

FEDFS_OK

The LDAP query succeeded. A list of FSN and FSL records are summarized on stdout.

FEDFS_ERR_ACCESS

The anonymous entity does not have permission to perform the requested operation.

FEDFS_ERR_INVAL

One of the arguments was not valid.

FEDFS_ERR_SVRFAULT

An unanticipated non-protocol error occurred.

FEDFS_ERR_NSDB_ROUTE

The nsdb-list(8) command was unable to find a route to the specified NSDB.

FEDFS_ERR_NSDB_DOWN

The nsdb-list(8) command determined that the specified NSDB was down.

FEDFS_ERR_NSDB_CONN

The nsdb-list(8) command was unable to establish a connection with the specified NSDB.

FEDFS_ERR_NSDB_AUTH

The nsdb-list(8) command was unable to authenticate and establish a secure connection with the specified NSDB.

FEDFS_ERR_NSDB_LDAP

A non-specific LDAP error occurred on the connection between the nsdb-list(8) command and specified NSDB.

FEDFS_ERR_NSDB_LDAP_VAL

An LDAP error occurred on the connection between the nsdb-list(8) command and specified NSDB. The specific error may be displayed on the command line.

FEDFS_ERR_NSDB_NONCE

The nsdb-list(8) command was unable to locate the NCE on the specified NSDB.

FEDFS_ERR_NSDB_RESPONSE

The nsdb-list(8) command received a malformed response from the specified NSDB.

FEDFS_ERR_NSDB_FAULT

An unanticipated error related to the specified NSDB occurred.

FEDFS_ERR_NSDB_PARAMS

The local NSDB connection parameter database does not have any connection parameters on record for the specified NSDB.

FEDFS_ERR_NSDB_LDAP_REFERRAL

The nsdb-list(8) command received an LDAP referral that it was unable to follow.

FEDFS_ERR_NSDB_LDAP_REFERRAL_VAL

The nsdb-list(8) command received an LDAP referral that it was unable to follow. A specific error may be displayed on the command line.

FEDFS_ERR_NSDB_LDAP_REFERRAL_NOTFOLLOWED

The nsdb-list(8) command received an LDAP referral that it chose not to follow, either because the local implementation does not support following LDAP referrals or LDAP referral following is disabled.

FEDFS_ERR_NSDB_PARAMS_LDAP_REFERRAL

The nsdb-list(8) command received an LDAP referral that it chose not to follow because the local NSDB connection parameter database had no connection parameters for the NSDB targeted by the LDAP referral.

EXAMPLES

Suppose you are the FedFS administrator of the example.net FedFS domain and that you want to know if the LDAP server ldap.example.net is an NSDB. Use:

$ nsdb-list -l ldap.example.net -e o=fedfs
NSDB: ldap.example.net:389

  NCE: o=fedfs

 FSN UUID: c1c21720-1fcd-4ad6-a837-f57af4cf2972

FSL UUID: 4c887035-ad2f-4ba8-ab75-7118df9714cd

FSL UUID: 84445758-b5fb-4acc-814b-cc121b3bafe9

There is a single file set name, with two file set location records, registered under "o=fedfs" on this NSDB. To resolve the listed FSN UUID, use the nsdb-resolve-junction(8) command.

SECURITY

The NSDB protocol draft standard requires that FedFS FSN and FSL records are readable by everyone. The nsdb-list(8) command uses anonymous binding when performing LDAP queries.

The target LDAP server must be registered in the local NSDB connection parameter database. The connection security mode listed in the NSDB connection parameter database for the target LDAP server is used during this operation. See nsdbparams(8) for details on how to register an NSDB in the local NSDB connection parameter database.

COLOPHON

This page is part of the fedfs-utils package. A description of the project and information about reporting bugs can be found at http://wiki.linux-nfs.org/wiki/index.php/FedFsUtilsProject.

AUTHOR

Chuck Lever <chuck.lever [at] oracle.com>