Using multiple file systems to distribute spool I/O on primary computer

You can distribute I/O activity across multiple file systems to improve throughput.
The /aiw file system contains the spool directories for the entire Ricoh ProcessDirector system. You can extend the /aiw file system by defining additional file systems on the primary computer and mounting them under the /aiw file system to distribute spool processing.

It is recommended that you create an additional volume group for the additional file system.

To define a new file system and mount it in the spool directory on the primary computer:
  1. Stop the system:
    1. On each secondary computer, log in as the Ricoh ProcessDirector system user (aiw1 is the default) and enter stopaiw.
    2. On the primary computer, log in as the Ricoh ProcessDirector system user and enter stopaiw.
  2. On the primary computer, log in as the root user.
  3. Enter this command to change to the spool directory:

    cd /aiw/aiw1/spool

  4. If the spool directory does not exist, the command fails and you see this message: No such file or directory. If that happens, enter these commands:
    1. cd /aiw/aiw1
    2. mkdir spool
    3. chown systemuser:group spool,
      where systemuser is the Ricoh ProcessDirector system user (aiw1 is the default) and group is the Ricoh ProcessDirector group (aiwgrp1 is the default).
    4. chmod 775 spool
    5. cd /aiw/aiw1/spool
  5. From the aiw/aiw1/spool directory, enter this command to create a new spool directory on the primary computer:

    mkdir newspooldirectory

    newspooldirectory is any valid directory name on your system.

  6. Use SMIT (System Management Interface Tool) to define the new file system and where it is to be mounted. The mount point is: /aiw/aiw1/spool/newspooldirectory.
  7. Enter these commands to specify the appropriate permissions:
    1. cd /aiw/aiw1/spool
    2. chown systemuser:group newspooldirectory
    3. chmod 775 newspooldirectory
  8. If you have secondary servers, you must export a new directory or file system:
    1. To export the newspooldirectory directory, enter smitty fs on the command line. You see the File Systems window.
    2. Click Add / Change / Show / Delete File Systems.
    3. Click Network File System.
    4. Click Network File System again.
    5. Click Add a Directory to the Exports List.
    6. Type or select values in the fields.
      The bold entries in this example indicate a change that you must specify:
      Type or select values in entry fields.
      Press Enter AFTER making all changes
      
      * Pathname of directory to export	
      /
        Anonymous UID
        Public filesystem?
      +
      * Export directory now, system restart or both
      +
        Pathname of alternate exports file
        Allow access by NFS versions
      *
          External name of directory (NFS V4 access only)    
          Referral locations (NFS V4 access only)            
          Replica locations                                     
          Ensure primary hostname in replica list             
      +
          Allow delegations?
      +
      *   Security method 1                                        
      *       Mode to export directory  
      +
              Hostname list. If exported read-mostly
              Hosts & netgroups allowed client access        
              Hosts allowed root access
         
      [Entry Fields]
      
      
      [/aiw/aiw1/spool/newspooldirectory]
      
      [-2]
      no
      
      both
      
      []
      [] 
      
      []
      []
      []
      yes
      
      no
      
      [sys]
      read-write
      
      []
      [secondary_server_name]
      [secondary_server_name]
      
    7. Press Enter.
    8. Press F10 to exit smitty.
    9. If you have Linux or AIX secondary servers, configure each secondary computer to mount the new spool directory.
  9. Restart Ricoh ProcessDirector:
    1. Restart the base product by logging in to the AIX system as the Ricoh ProcessDirector system user and entering startaiw.
    2. Restart each secondary server by logging in to each secondary computer as the Ricoh ProcessDirector system user and entering startaiw.
 
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