J2UZ-5361-02ENZ2(A)
Before using this online manual Preface Chapter 1 File System Functions 1.1 File System Overview 1.1.1 Basic hardware configuration for use of file system 1.2 Simultaneous Shared Access Maintaining Coherency 1.3 High Availability 1.3.1 Uninterrupted operation in case of node failure 1.3.2 High-speed file system recovery 1.3.3 Area reassignment in case of disk block failure 1.4 Performance 1.4.1 Data access performance 1.4.2 Contiguous block assignment 1.4.3 Individualized meta-cache management 1.5 Extendability 1.5.1 Adding shared nodes 1.6 Operability 1.6.1 GUI 1.7 Upper Limits of the File System 1.8 Notes 1.8.1 Relationships with Other Components of PRIMECLUSTER 1.8.2 Unavailable functions 1.8.3 Service ports used by the GFS Shared File System 1.8.4 Notes on use of logical volumes of GDS 1.8.5 Unmounting a GFS Shared File System 1.8.6 Notes of updatedb(1L) 1.8.7 Open processing from other nodes to a file mapped by mmap(2) 1.8.8 Changing the system time while a GFS Shared File System is working 1.8.9 Creating a regular file by mknod(2) 1.8.10 Stopping the GFS Shared File System Chapter 2 File System Structure 2.1 Disk Structure of File System 2.1.1 Super block 2.1.2 Partition configuration data 2.1.3 Meta-data area 2.1.3.1 Area management data 2.1.3.2 i-node area 2.1.3.3 V-data area 2.1.4 Update log area 2.1.5 File data area 2.1.6 Partition configuration 2.2 Component configuration 2.2.1 MDS(Meta-data Server) 2.2.2 AC(Access Client) 2.2.3 Monitoring daemon 2.3 File Access and Token Management Chapter 3 Failure Recovery 3.1 MDS Failure Recovery 3.1.1 Automatic recovery for primary MDS failures 3.1.2 Automatic recovery for secondary MDS failures 3.1.3 Automatic recovery in case primary MDS goes down during primary MDS operation only 3.1.4 Automatic recovery by standby MDS node 3.2 AC degeneration Chapter 4 File System Design 4.1 Mount and unmount opportunity of the file system at the time of system starting and ending 4.2 System Design 4.2.1 Effects of file system operation and system load 4.2.2 Node layout 4.2.3 LAN selection 4.3 Backup Design Chapter 5 Management Partition 5.1 Management Partition 5.2 Resources Required for the Management Partition 5.3 Notes on Management 5.4 Configuring the Management Partition and Starting the File System Monitoring Mechanism 5.5 Backup and restore of the management partition information Chapter 6 Starting and Exiting the Management View 6.1 Starting Web-Based Admin View 6.2 Web-Based Admin View Top Menu 6.2.1 Web-Based Admin View Operation Menu Functions 6.3 Starting GFS Management View 6.4 Exiting GFS Management View 6.5 Exiting Web-Based Admin View Chapter 7 Operation Management View Screen Elements 7.1 Screen Configuration 7.2 Menu Configurations and Functions 7.2.1 General 7.2.2 Operation 7.2.3 View 7.2.4 Help 7.3 Icon Types and Object Status Chapter 8 File System Operations (GUI) 8.1 Flow of Operations 8.1.1 Creation 8.1.2 Change (in file system attributes) 8.1.3 Change (shared node information) 8.1.4 Deletion 8.2 Creation 8.2.1 Creating a file system 8.3 Change 8.3.1 Changing in file system attributes 8.3.2 Changing the shared node information 8.4 Deletion 8.4.1 Deleting the file system Chapter 9 File System Operations (Command) 9.1 Operation flow 9.1.1 Creation 9.1.2 Change(in file system attributes) 9.1.3 Change(shared node information) 9.1.4 Change(re-creating a file system) 9.1.5 Change(MDS operational information) 9.1.6 Deletion 9.2 Flow from file system creation to mount/umount 9.2.1 Setting shared disks 9.2.2 Creating a file system 9.2.2.1 Defaults of parameters used in sfcmkfs(8) 9.2.2.2 Examples of creating a representative file system 9.2.2.3 Customizing the GFS Shared File System 9.2.2.4 Setting MDS operational information 9.2.3 Setting /etc/fstab 9.2.4 mount/umount/all nodes (u)mount 9.2.4.1 Mount 9.2.4.2 Mount of all nodes 9.2.4.3 Umount 9.2.4.4 Unmount of all nodes 9.2.5 Checking file system status 9.2.6 Notes applying when the partitions of a created file system are used 9.2.6.1 The GFS Shared File System 9.2.6.2 File systems other than GFS Shared File System 9.3 Change(shared node information) 9.3.1 Unmount 9.3.2 Changing the shared node information 9.3.2.1 Adding node information 9.3.2.2 Deleting node information 9.3.3 Mount 9.4 Change(re-creating a file system) 9.4.1 Unmount 9.4.2 Re-creating the file system 9.4.3 Mount 9.5 Change(MDS operational information) 9.5.1 Unmount 9.5.2 Change the MDS operational information 9.5.2.1 Enabling MDS placement on all nodes 9.5.2.2 Changing the MDS placement range 9.5.2.3 Changing the MDS placement priority 9.5.3 Mount 9.6 Deleting 9.6.1 Unmount 9.6.2 Deleting the file system 9.6.3 Removing the entry in /etc/fstab Chapter 10 File System Management 10.1 File System Management Commands 10.2 Checking a File System for Consistency and Repairing It 10.2.1 Action to be taken when fsck terminates abnormally 10.2.1.1 Memory allocation request error 10.2.1.2 File system configuration information acquisition failure 10.2.1.3 File system partition configuration data error 10.2.1.4 Node addition not performed 10.2.1.5 Irreparable file system destruction 10.2.1.6 Operation error 10.2.1.7 Repairing of file system is non-completion 10.2.1.8 Other messages 10.3 Displaying File System Information 10.3.1 Acquiring file system information 10.3.2 Displaying partition/node information 10.3.3 Displaying file system management state 10.4 Using the GFS Shared File System for RMS Cluster Operation 10.4.1 Before using a GFS shared file system in RMS cluster operation 10.4.2 To enable use as a shared file system of RMS cluster operation 10.4.3 Setup flow when the GFS Shared File System is to be used in RMS cluster operation 10.4.4 Setup procedure when the GFS Shared File System is to be used in the RMS cluster operation Chapter 11 File System Backing-up and Restoring 11.1 Type of Backing Up and Restoring 11.2 Backing Up by Linux Standard commands 11.2.1 Backing up file by file 11.2.2 Backing up entire file system 11.3 Restoring by Linux Standard commands 11.3.1 File-by-file restoring 11.3.2 Entire-file-system restoring Chapter 12 Tuning 12.1 Tuning Parameters 12.1.1 Amount of Cache 12.1.2 Communication timeout value Chapter 13 Migration to the GFS Shared File System Appendix A List of Messages A.1 AC Messages of the GFS File System A.1.1 Panic messages A.1.2 Warning messages A.1.3 Information messages A.2 GFS Shared File System Daemon messages A.2.1 Panic messages A.2.1.1 sfcfs_mds MDS(sfcfsmg daemon) A.2.1.2 sfcprmd daemon A.2.2 Error messages A.2.2.1 sfcfrmd daemon A.2.2.2 MDS(sfcfsmg) daemon A.2.2.3 sfcfsd daemon A.2.2.4 sfcfs_mount command A.2.2.5 sfcpncd daemon A.2.2.6 sfcprmd daemon A.2.3 Warning messages A.2.3.1 MDS(sfcfsmg) daemon A.2.3.2 sfcfsd daemon A.2.4 Information messages A.2.4.1 sfcfrmd daemon A.2.4.2 MDS(sfcfsmg) daemon A.2.4.3 sfcprmd daemon A.3 GFS Shared File System Exclusive Management Command Messages A.3.1 sfcdf command A.3.2 sfcfsck command A.3.3 sfcmkfs command A.3.4 sfcmount command A.3.5 sfcumount command A.4 GFS Shared File System Specific Management Command Messages A.4.1 libsfcfs library A.4.2 sfcadm and sfcnode commands A.4.3 sfcfrmstart command A.4.4 sfcfrmstop command A.4.5 sfcgetconf command A.4.6 sfcinfo command A.4.7 sfcmntgl command A.4.8 sfcsetup command A.4.9 sfcstat command A.4.10 sfcumntgl command A.4.11 sfcrscinfo command A.5 GFS Shared File System Script Messages A.5.1 sfcfsrm script A.6 GFS Shared File System Management View Messages A.6.1 Error messages A.6.2 Warning messages A.6.3 Information messages A.7 Web-Based Admin View Messages A.8 Log Reference Messages A.9 Operating Environment Setting Messages Appendix B Reference Manual B.1 Commands for Common File System Management B.1.1 sfcdf(8) Display the GFS Shared File System use status and configuration information B.1.2 sfcfsck(8) Verify and restore GFS Shared File System consistency B.1.3 sfcmkfs(8) Construct the GFS Shared File System B.1.4 sfcmount(8) Mount the GFS Shared File System on the local node B.1.5 sfcumount(8) Unmount the GFS Shared File System from the local node B.2 GFS Shared File System Specific Management Commands B.2.1 sfcadm(8) Change partition information setting B.2.2 sfcfrmstart(8) Start FsRM on the local node B.2.3 sfcfrmstop(8) Stop FsRM on the local node B.2.4 sfcgetconf(8) Make a backup of the management partition B.2.5 sfcinfo(8) Display partition information B.2.6 sfcmntgl(8) Mount the GFS Shared File System on all nodes B.2.7 sfcnode(8) Add, delete, and change node configuration information B.2.8 sfcrscinfo(8) Display file system information B.2.9 sfcsetup(8) Initialize the management partition, add, delete and display node information, and display the management partition path B.2.10 sfcstat(8) Report statistics on GFS Shared File Systems B.2.11 sfcumntgl(8) Unmount the GFS Shared File System from all nodes Appendix C Trouble shooting C.1 Action for a Panic C.2 Action for Error Messages C.2.1 Action for I/O errors C.2.2 Collecting information for troubleshooting C.3 GFS Shared File System Management View Abnormality C.4 Action to Be Taken When Unmounted by umount(8) C.5 Action to be taken when the file system configuration information is inconsistent Appendix D The changes in Each Version D.1 Latest changes in updated from GFS Shared File Systems 4.1A20 to 4.1A30 D.1.1 Incompatible function D.1.1.1 Communication timeout value between nodes D.1.2 Incompatible Daemon D.1.2.1 Information message of sfcfrmd demon Glossary