presentation 200606 ifs

8/14/2019 Presentation 200606 IFS

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Inside the IFS

6/1/06 By: Tom Huntington


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Understanding The IFS

The Basics

File Systems

CommandsJournalingSave/RestoreSecurity


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The Basics

Added to OS/400 V3R1 in 1994Integrates iSeries with UNIX, Windows, and othersDirectory structure much like your PCProvides access to data stored in integrated or remotexSeries servers, Novell servers, or other remote iSeriesservers

Contains pre-defined file systems:All contained within a single root directoryEach with their own limitations and rules

Library structure is just one of these structures


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The Basics

Many applications use the IFS:Integrated xSeries (Intel processor)Various imaging packages

NetServer (Explorer access to the IFS)CD images for unattended installationPASE environment for UNIX Applications

Client Access executablesTCP/IP configuration filesTomcat HTTP server
http://www.sap.com/index.aspx


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The Basics

Libraries and Objectsvs.

Directories and Stream Files


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Libraries And Objects

Traditional OS/400 file systemEvery object has an object type associated with it

Programs can only be programsFiles can only be files

Every object type has a specific purposeFiles typically contain fixed length recordsAllows only one level (or two with file members) of hierarchy


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Directories And Stream Files

Directories start at a root level /Directories support stream files

Stream Files (STMF) are like PC filesThey do not contain fixed length records

Contain a continuous stream of dataThink of audio, image, video, XML, and HTML files

IFS files are also called LINKS in OS/400 and i5/OSHigh performance data access for attached clients


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IFS-Related CommandsIBM has provided familiar DOS commands

MD Make (create) DirectoryCD Change (current) DirectoryRD Remove (delete) Directory

COPY Copy object or subdirectoryDEL Remove (delete) link or object

IBM provides APIs for accessing IFS data programmatically IBM Integrated File System V5R3 User GuideiSeries Network:

Accessing Data Files from the IFS in RPG January 2004Many other IFS programming articles available at iSeries Network and elsewhere


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The BasicsFile Systems

CommandsJournalingSave/RestoreSecurity


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File Systems

Eleven file systems are included in the IFSEach file system is located under the root /Each file system has rules and restrictions

User directories can be at the same level as thesupplied file systems directoriesViewed with the WRKLNK command

Work with Object LinksThink of a link as an object or path to an object


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WRKLNK Work With Object Links


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WRKLNK Root Directory


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File Systems

/ root

QSYS.LIBQDLSQOpenSysQOPTQNetWareQNTCQFileSrv.400User-Defined


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/ root Directory

Uses many PC DOS-like commandsMD, RD, CD, DEL, COPY

Uppercase and lowercase object names aremaintained, but no distinction is made

/CHUCK and /chuck refer to the same directory

Each part of a path name can be up to 255 characters

Full path name can be extremely long (up to 16 MB)Other file systems branch off of the root


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WRKLNK Root


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File Systems

/ rootQSYS.LIB

QDLSQOpenSysQOPTQNetWareQNTCQFileSrv.400User-Defined


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QSYS.LIB

Structure supports traditional library structureObject names are converted to uppercase

Typically the environment in which RPG andCOBOL programmers write codeQSYS.LIB objects can be accessed with traditionalOS/400 interface or with IFS CL commands


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QSYS.LIB - WRKLNK


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QSYS.LIB - WRKLNK


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File Systems

/ rootQSYS.LIBQDLS

QOpenSysQOPTQNetWareQNTCQFileSrv.400User-Defined


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QDLS Document Library SystemStructure supports the IBM OfficeVision Document LibraryObjects (DLO) known as folders and documentsAvailable before V3R1 and before the IFS

Object names are converted to uppercaseBoth DLO and IFS commands can be usedMultiple directory levels (folder-in-folder) supported

Naming is limited to 8 characters plus a 3-character extension


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File Systems

/ rootQSYS.LIBQDLSQOpenSys

QOPTQNetWareQNTCQFileSrv.400User-Defined


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QOpenSys The UNIX Structure

Supports UNIX open standards POSIX and XPGSupports uppercase and lowercase naming

No limit to the depth of the directory hierarchyFile and directory names can be very largeThe directory name is not case-sensitive

/QOpenSys = /qopensys = /QOPENSYSContent of this directory is case sensitive


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QOpenSys - WRKLNK


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QOpenSys - WRKLNK


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QOpenSys - WRKLNK


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File Systems

/ rootQSYS.LIBQDLSQOpenSysQOPT

QNetWareQNTCQFileSrv.400User-Defined


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QOPT Optical File System

HFS is an older technology, whereas the IFS access toQOPT is based on the ILEHFS access to QOPT provides commands that IFS access

does not provide, such as commands to work with opticalfiles

Naming convention:/QOPT/volumeID/directory/subdir/fileThe CDROM drive volume is displayed here


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QOPT - WRKLNK


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QOPT - WRKLNK


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QOPT - WRKLNK


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QNetWare Novell NetwareAllows access to data on a local or remote Integrated xSeries Server running Novell Netware 4.10 or 4.11Allows access to remote Netware servers running Netware 3.12,4.10, 4.11, or 5.0Only available if OS/400 Enhanced Integration for Novell NetWareis installed on the systemVolumes can be mounted using a NetWare path such as:/QnetWare/HELP.TRE/USA.C/MINN.O/TRAIN.OU/VOL1.CN

where : TRE=an NDS tree, C=country, O=organization,OU=organizational unit, CN=common name


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File Systems

/ rootQSYS.LIBQDLSQOpenSysQOPTQNetWareQNTC

QFileSrv.400User-Defined


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QNTC Windows NT/2000Provides access to objects stored on Integrated xSeriesadaptors running Windows NT 4.0 or higher Allows access to remote Windows servers,

allowing iSeries and Windows applications toaccess the same dataUse IFS commands or APIs to manipulate the data

Windows directories cannot be created from the iSeriesSAV/RST commands cannot be used


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QNTC Windows NT/2000

The QSERVER subsystem must be activeThe TCP/IP server job *NETSVR must be startedThe iSeries Netserver job is called QZLSSERVER inQSERVER subsystemAuthenticates using the requesting jobs user profile

User profile and password must match the Windows user

ID and passwordTo create a link to a remote server:MD /QNTC/servername


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File Systems

/ rootQSYS.LIBQDLSQOpenSysQOPTQNetWareQNTCQFileSrv.400

User-Defined


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QFileSrv.400

Provides iSeries-to-iSeries directory visibilityLike QNTC, it uses the OS/400 file server Requires the QSERVER subsystem to be activeAuthenticates using the requesting jobs user profile and

passwordThe iSeries-to-iSeries connection is maintained for abouttwo hoursSubdirectories (system names) in QFileSrv.400 areremoved during IPL and must be re-created


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QFileSrv.400 System ITEACH


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QFileSrv.400 System ITEACH


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File Systems

/ rootQSYS.LIBQDLSQOpenSysQOPTQNetWareQNTCQFileSrv.400User-Defined


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UDFS - User-Defined File Systems

File system created and maintained by youYou decide whether file names are case-sensitiveCommands:

CRTUDFS Create a UDFSDSPUDFS Display a UDFSMOUNT (ADDMFS) Mount a UDFSUNMOUNT (RMVMFS) Unmount a UDFS

To access UDFS objects, it must be mounted over another directoryCreated in /dev/QASPnn/name.udfs as a BLKSF


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Eleven File Systems

We have covered nine of the eleven file systems.There are two others are:

Independent ASP QSYS.LIB file systems

NFS (Network File System)

There are also Integrated xSeries Server storagespaces, located as a User-Defined file system in the/dev directory


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IXS Integrated xSeries Servers

Intel card inserted in the iSeriesUses DASD on iSeriesWindows or Netware manage this storageStorage space is created using:

CRTNWSSTG Create NWS StorageWRKNWSSTG Work With NWS Storage

ADDNWSSTGL Link DASD to IXS DescriptionThese named storage spaces are stored in directory/QFPNWSSTG.


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The BasicsFile SystemsCommands

JournalingSave/RestoreSecurity


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CommandsDirectory commands

Create or remove current directory

Link CommandsMuch like the LS command in UNIX, or

the DIR command in DOSCreate multiple paths to the same file

Copy commandsCopy library-to-directory, directory-to-library

Check in, check outSave and Restore commandsAuthority commands


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Directory Commands

MD (CRTDIR); RD (RMVDIR)Create/remove new directory


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Directory Commands

CD (CHGCURDIR); DSPCURDIR; RTVCURDIR Change current directoryStarts with home directory in user profile

Current directory starts from user profileRTVCURDIR is used in programs only


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Link Commands

A link is a path to a file in the IFSFiles can have multiple linksLinks can cross file systemsA hard link points to an object that existsRemoving all hard links deletes the fileA symbolic link points to the location of an object,even if the object does not currently exist


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Link CommandsWRKLNK Work With Object Links

ADDLNK, RMVLNK (DEL), DSPLNK, RNM (REN)Somewhat like WRKOBJ in OS/400, LS in UNIX, andDIR in DOS


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Copy Commands

COPY (CPY); MOVE (MOV) - Copy or Move objectCan copy an entire sub-directoryUse wildcards to copy multiple objects

CPYTOSTMF; CPYFRMSTMF Copy To/From astream file to a library objectCPYTOIMPF; CPYFRMIMPF Copy To/From a

spreadsheet import format


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Copy Commands

CPYTOSTMF; CPYFRMSTMFCopy data to/from a library database file member to/from a streamfileCan copy save files to stream filesUse to create a PC-type text (.TXT) fileConvert data from EBCDIC to ASCII, or any valid code pageLimitations:

Database file cannot have multiple fieldsDate fields are not copied


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CPYTOSTMF


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CPYFRMSTMF


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Copy Commands

CPYTOIMPF; CPYFRMIMPFCopy a database file to a PC-type file with delimitersFixed or variable field lengths in the PC file

Create a comma-separated, variable-type, PC file (.CSV)


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The BasicsFile SystemsCommandsJournaling

Save/RestoreSecurity


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The BasicsFile SystemsCommandsJournalingSave/Restore

Security


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SAV To Back Up All Directories

QSYS.LIB naming convention


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SAV To Back Up All Directories/QSYS.LIB is everythingin Library file system

/QDLS is everything inDocument file system (QDOC)


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Change Update history to *YES


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Restore QOpenSys File System

Restore all data in /QOpenSys from last full save totape:

RST DEV('/qsys.lib/tap01.devd') OBJ(('/QOpenSys/*'))

SUBTREE(*ALL) OPTION(*ALL) ALWOBJDIF(*ALL)Restore all data in /QOpenSys from changes duringthe week from the save file:

RST DEV('/qsys.lib/qgpl.lib/tmpsav.file')OBJ(('/QOpenSys/*')) SUBTREE(*ALL) OPTION(*ALL)ALWOBJDIF(*ALL)


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The BasicsFile SystemsCommandsJournalingSave/RestoreSecurity


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IFS (Directory) Authority

Use directory authority the same way that you uselibrary authorityGroup objects in a directory to secure the directoryrather than individual objectsUses OS/400, UNIX, and PC-type securityRequires *SECADM special authority and rights to

the user profile being changed on the IFS objectIFS authority is sometimes referred to as privileges


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IFS (Directory) Security Commands

DSPAUT Display AuthorityWRKAUT Work With AuthorityCHGAUT Change AuthorityCHGOWN Change Directory Owner


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CHGAUT - Change Authority


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Lock *PUBLIC Out Completely!


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In summary we have learned

Stores several types of dataIt can be manipulatedIt can be backed upIt can be journaledIt can be secured


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Robot/SAVE v11 Features

Compliance releaseSox compliance reports

What was restored to my system?

Save encryptionsKey management (passwords)Levels of encryptions

Data protectionAES and DES


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Robot/SAVE Version 11.0


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New Option on System Setup

Establishes Level of Encryption


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Establishes Level of Encryptionand Key Phrase


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Always Encrypt for Library Level


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Object Level Default Value

Save Encrypted at Backup Set


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Save Encrypted at Backup SetLibrary

Encryption at Object Level for


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yp jSpecific Object


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Robot/SAVE 11

Tape EncryptionTape ManagementAutomated Backups


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Thank you for joining metoday!

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1-952-933-0609

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