PRIMECLUSTER Global File Services Configuration and Administration Guide 4.1 (Solaris(TM) 10 Operating System)

11.2.2.4 Setting MDS operational information

The following shows an example of creating a typical GFS Shared File System with MDS operational information specified to improve availability:

Priority settings for MDS placement

Specify the priority of placing the primary MDS and secondary MDS using the shared host name in the -o node option of the mkfs_sfcfs(1M) command. The primary MDS and secondary MDS candidates are selected in the order the shared host names are specified. The primary MDS is ultimately determined based on the MDS placement range (described below) and operation status of actual shared nodes when starting the file system operation.

The following shows an example of creating a file system using mkfs_sfcfs(1M) specifying mikan as the primary MDS candidate and karin as the secondary MDS candidate.

# mkfs -F sfcfs -o node=mikan,karin /dev/sfdsk/gfs01/rdsk/volume01 <Enter>
   Representative partition (meta-data,log and data):  /dev/sfdsk/gfs01/rdsk/volume01
   Shared hosts:  mikan, karin
   Primary MDS:  mikan
   Secondary MDS:  karin