Enabling Cached ODM for file systems

Cached ODM is initially disabled on a file system. You enable Cached ODM for a file system by setting the odm_cache_enable option of the vxtunefs command after the file system is mounted.

See the vxtunefs(1M) manual page.

Note:

The vxtunefs command enables conditional caching for all of the ODM files on the file system.

To enable Cached ODM for a file system

  1. Enable Cached ODM on the VxFS file system /database01:

      # vxtunefs -s -o odm_cache_enable=1 /database01
  2. Optionally, you can make this setting persistent across mounts by adding a file system entry in the file /etc/vx/tunefstab:

      /dev/vx/dsk/datadg/database01 odm_cache_enable=1

    See the tunefstab(4) manual page.