How to specify mount options for AIX JFS2 filesystem within Veritas Cluster Server (VCS)

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Article ID: 100005265

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Description

Error Message

GUI options do not allow entering mount options, or selecting JFS2 type filsystem for mounting on AIX systems.

 

Resolution

The main.cf file can be modified to reflect the desired mount point options.  For example, the Concurrent I/O option (cio) option can be added to the MountOptions manually and will work to mount Enhanced Journal File Systems (jfs2) in AIX.  This is shown in the example below:
 
 A minimum set of options for a mount option with cio is listed below:
        Mount vcsmount (
                MountPoint = "/vcsmount"
                BlockDevice = "/dev/fslv00"
                FSType = jfs2
                MountOpt = cio
                FsckOpt = "-y"
               ...
                )
 
This has been tested in the lab to work for VCS mount of jfs2 filesystem:

# mount
  node       mounted        mounted over    vfs       date        options
-------- ---------------  ---------------  ------ ------------ ---------------
         /dev/hd4         /                jfs2   Feb 08 16:54 rw,log=/dev/hd8
         /dev/hd2         /usr             jfs2   Feb 08 16:54 rw,log=/dev/hd8
         /dev/hd9var      /var             jfs2   Feb 08 16:54 rw,log=/dev/hd8
         /dev/hd3         /tmp             jfs2   Feb 08 16:54 rw,log=/dev/hd8
         /dev/fwdump      /var/adm/ras/platform jfs2   Feb 08 16:55 rw,log=/dev/hd8
         /dev/hd1         /home            jfs2   Feb 08 16:55 rw,log=/dev/hd8
         /proc            /proc            procfs Feb 08 16:55 rw
         /dev/hd10opt     /opt             jfs2   Feb 08 16:55 rw,log=/dev/hd8
         /dev/fslv00      /vcsmount        jfs2   Feb 24 12:22 rw,cio,log=/dev/loglv00
 
You may want to use all the mount options listed during a normal mount.
Example: rw,cio,log=/dev/loglv00
 
 
# /opt/VRTSvcs/bin/hastatus -sum
-- SYSTEM STATE
-- System               State                Frozen
A  sys-4            RUNNING              0
A  sys-1            RUNNING              0
 
-- GROUP STATE
-- Group           System               Probed     AutoDisabled    State
...
B  mountsg         sys-4            Y          N               ONLINE
B  mountsg         sys-1            Y          N               OFFLINE
...
 

 

Procedure to manually edit the main.cf file without disruptions to normal operations.  This procedure requires a stop of the entire cluster, as the edited configuration file needs to be propagated to all nodes. 

  • Freeze ServiceGroups.
  • From a Command Prompt, stop the entire cluster with hastop -all -force
  • Open the main.cf file in an editor add the MountOpt line and change FSType to jfs2 (as above).
  • From a Command Prompt, start the entire cluster with hastart -all (run this on the node where you edited the main.cf file, so it starts first and propagates the changes to the other nodes.)
  • Unfreeze the ServiceGroups.

Continue operations normally.


Applies To

This was tested on AIX 5.3 using VCS 5.1.

 

Issue/Introduction

Some of the VCS GUI versions do not allow you to add mount options for JFS2 in VCS.   A manual edit of the main.cf file may be needed.  
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