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IBM AS/400E manual Ibmr

Models: AS/400E

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IBM AS/400E manual Ibmr

Contents

IBM Page IBM Second Edition May Contents Client Mounting of File Systems Using the Network File System with AS/400 File SystemsNFS Startup, Shutdown, and Recovery Integrated File System APIs and the Network File SystemReaders Comments Ð Wed Like to Hear from You Vi OS/400 Network File System Support V4R4 Figures Viii OS/400 Network File System Support V4R4 Tables OS/400 Network File System Support V4R4 AS/400 Operations Navigator About OS/400 Network File System Support SC41-5714Who should read this book Installing Operations Navigator Prerequisite and related informationAbout OS/400 Network File System Support SC41-5714 Xiv OS/400 Network File System Support V4R4 Summary of Changes Xvi OS/400 Network File System Support V4R4 What is the Network File System? IntroductionLocal client mounts data from a remote server Brief History Network File System as a File SystemStateless Network Protocol Overview of the Tulab ScenarioTulab network namespace OS/400 Network File System Support V4R4 Network File System Client/Server Model Network File System Client/Server Communication DesignNetwork File System Process Layout Network File System Stack DescriptionAS/400 as a Network File System Server Network File System Server-Side DaemonsMount Daemon Mntd RPC Binder Daemon RpcdNFS Server Daemons Nfsd Network Lock Manager Daemon Nlmd AS/400 as a Network File System ClientNetwork Status Monitor Daemon Nsmd Block I/O Daemon Biod Network File System Client-Side DaemonsNFS Client-Side Caches Directory and File Attribute Cache Data cacheClient Timeout Data CacheCreate a User-Dened File System NFS and the User-Dened File System UdfsUser File System Management RestrictionsExample 1 Create Udfs in System ASP on TULAB2 Crtudfs DisplayExamples Example 2 Create Udfs in user ASP on TULAB2Display a User-Dened File System Dspudfs DisplayDisplay Udfs in user ASP on TULAB2 Delete a User-Dened File SystemExample Unmount and Delete a Udfs in the user ASP on TULAB2 Mount a User-Dened File SystemDltudfs Display RMVMFS/UNMOUNT Display Unmount a User-Dened File SystemADDMFS/MOUNT Display Mount and Export a Udfs on TULAB2Saving and Restoring a User-Dened File System Graphical User InterfaceWindows 95 view of using the Dspudfs Display Udfs command User-Dened File System Functions in the Network File SystemUsing User-Dened File Systems with Auxiliary Storage Pools Recovery with the Network File SystemExportfs OPTIONS-I -O ROOT=TUclient52X DIR/DEV What is Exporting? Server Exporting of File SystemsWhy Should I Export? Tulab ScenarioWhat File Systems Can I Export? Before the server has exported informationHow Do I Export File Systems? Rules for Exporting File SystemsSub-directory exists on a different local le system Chgnfsexp Change Network File System Export Command PurposeCHGNFSEXP/EXPORTFS Display Change NFS Export ChgnfsexpExample 1 Exporting all entries from /etc/exports Example 2 Exporting one directory with optionsExample 4 Forcing read-only permissions on an export Exporting from Operations NavigatorExample 3 Exporting a directory to many netgroups Operations Navigator interface Click Customize to congure thePath Code Page and Data Code Finding out what is exported Operations NavigatorUnix showmount command Retrieve Network File System Export Entries Qznfrtve APIExporting Considerations Mounted File System Loops SolutionSymbolic Links Mounted File System LoopsWhat Is Mounting? Client Mounting of File SystemsLocal client mounting le systems from a remote server Why Should I Mount File Systems? Local client mounts over a high-level directoryNetwork File Systems Where Can I Mount File Systems?What File Systems Can I Mount? User-Dened File SystemsViews of the local client and remote server Remote server exports /engdata How Do I Mount File Systems? Addmfs Add Mounted File System CommandMount Points Using the Add Mounted FS Addmfs display Example 2 Mounting a Network File System from TULAB2 Graphical User InterfaceExample 1 Mounting a User-Dened File System Example 3 Mounting a Network File System with OptionsRmvmfs Remove Mounted File System Command Example 4 Mounting a NetWare File System with OptionsUsing the Remove Mounted FS Rmvmfs display Example 1 Unmounting a Directory Dspmfsinf Display Mounted File System Information CommandDSPMFSINF/STATFS Display Example 2 Unmounting a User-Dened File SystemUsing the Display Mounted FS Information Dspmfsinf display Display Mounted FS Information Dspmfsinf output 1/2 Example 1 Displaying Statistics of a Mounted File System Example 2 Displaying /QSYS.LIB File System Statistics54 OS/400 Network File System Support V4R4 ″Root″ File System Using the Network File System with AS/400 FileSystems Case-Sensitivity Network File System DifferencesOpen Systems File System QOpenSys Read/Write OptionsLibrary File System QSYS.LIB Exporting and QSYS.LIBSupport for User Spaces Qpwfserver Authorization ListMounting and QSYS.LIB File Modes of Database MembersByte-Range Locks File Creation Document Library Services File System QdlsMounting and Qdls Path Name LengthOptical File System Qopt Mounting and QoptSecurity and Authorization User-Dened File System UdfsSystem and User Auxiliary Storage Pools Directory Authority64 OS/400 Network File System Support V4R4 NFS Startup, Shutdown, and Recovery Conguring TCP/IPImplications of Improper Startup and Shutdown Proper Startup ScenarioStrnfssvr Start Network File System Server Command Displaying NFS Server Daemons Status ConsiderationExample 2 Start Only One Daemon Strnfssvr DisplayExample 1 Start All NFS Daemons Proper Shutdown Scenario Endnfssvr End Network File System Server CommandTCP/UDP Timeout Con¯ict Shutdown ConsiderationDisplaying NFS Client Daemons Endnfssvr DisplayExample 2 End a Single Daemon Starting or stopping NFS from Operations NavigatorExample 1 End All Daemons Start Operations NavigatorThis brings up the following dialog box How Do I Lock a File? Locks and RecoveryWhy Should I Lock a File? Stateless System Versus Stateful OperationRlsifslck Release Integrated File System Locks Command Example 2 Releasing Locks for a Local Object Rlsifslck DisplayExample 1 Releasing Locks for a Remote Client Integrated File System APIs and the Network File System Client Timeout Solution Unchanged APIs Open, create, and mkdir APIsFcntl API 80 OS/400 Network File System Support V4R4 Network File System Security Considerations Trusted CommunityNetwork Data Encryption Group Identications GIDs User AuthoritiesUser Identications UIDs Potential User Identication Mapping Scenarios Administrating User IdenticationsMapping User Identications UID Mapping Examples Proper UID Mapping Securely Exporting File Systems Export Options Exporting to ″The World″ Root User Mappings90 OS/400 Network File System Support V4R4 Appendix A. Summary of Common Commands Command Description92 OS/400 Network File System Support V4R4 Editing les within the /etc directory Editing stream les by using the Edit File Edtf commandAppendix B. Understanding the /etc Files Absolute Path NameEtc/exports File Editing stream les by using a PC based editorEditing stream les by using a Unix editor via NFS Formatting Entries in the /etc/exports FilePathNameCodePage Formatting the Hostopt Host Options ParameterHostName DataFileCodePageExample 1 Exporting to a host and specifying all options Examples of Formatting /etc/exports with Hostopt ParameterEtc/netgroup File Netgroup-name host-name,user-name,domain-nameHost-name Etc/rpcbtab FileEtc/statd File User-name98 OS/400 Network File System Support V4R4 Copyright IBM Corp Copyright License Programming Interface Information Trademarks102 OS/400 Network File System Support V4R4 Bibliography CL Reference, SC41-4722104 OS/400 Network File System Support V4R4 Index Special Characters QsychgidCaches 14 Denition Directory and le attribute cache Error Conditions Estale error condition Order of shutdown 74, 9, 10, 11, 12, 13, 14 Qsychgid API Startup Case-sensitivity Network File System functions Readers Comments Ð Wed Like to Hear from You How satised are you that the information in this book isBusiness Reply Mail Page Ibmr IBM