Managing the AMASS File System

Cache Commands

Using new AMASS commands, you can now assign cache block list values for reads and writes per volume group. If you do not use the Enhanced Cache Control feature, AMASS reuses the cache block at the head of the free list, which is the oldest cache block in the system. However, by using both the setcblist and setcbwght commands, AMASS will instead reuse the cache block list with the highest weight factor score. Therefore, a system administrator can keep files for a specific volume group in cache longer and the files can consequently be accessed more quickly by client applications. These new cache control commands are located in /usr/amass/bin.

Command

Page

 

 

setcblist

C-3

 

 

cblist

C-5

 

 

setcbwght

C-7

 

 

cbwghtlist

C-9

 

 

setcblist

Assigns a read and write cache block list value for a specific volume group. The values are separate for reads and writes within the volume group.

6-00028-01 Rev A

Cache Commands

C-3