In the GFS Shared File System, the following item can be tuned for communication between MDS and AC:
Communication protocol (SFCFS_IPV6)
Determine either IPv6 or IPv4 to be used as a communication protocol between MDS and AC. Then, set it for SFCFS_IPV6. Set 1 for IPv6 and set 0 for IPv4. This value can be set for each file system.
The default is IPv4.
Note
A communication protocol can be set for each file system; however, we recommend that users set the same communication protocol for all the file systems so that it can be easily managed.
When changing a communication protocol, change the IP address of the shared node that is registered in host database (for example: /etc/hosts) to the one that matches the changed communication protocol. If the IP address does not match the communication protocol, the GFS Shared File System cannot be mounted.
Specify the tuning parameters with the -o option of sfcadm(8).
The following shows the example when using IPv6 as a communication protocol.
(Example)
# sfcadm -o SFCFS_IPV6=1 /dev/sfdsk/gfs01/dsk/volume01 <Enter> |
Check the specified values with the -e option of sfcinfo(8).
The following shows the example to check the values.
(Example)
# sfcinfo -e /dev/sfdsk/gfs01/dsk/volume01 | grep SFCFS_IPV6 <Enter> SFCFS_IPV6=1 |
To restore the communication protocol to IPv4 (default), delete the setting of SFCFS_IPV6.
(Example)
# sfcadm -o SFCFS_IPV6= /dev/sfdsk/gfs01/dsk/volume01 <Enter> |
(Example)
# sfcinfo -e /dev/sfdsk/gfs01/dsk/volume01 | grep SFCFS_IPV6 <Enter> |
If no value is displayed here, the setting has been deleted.
