11.5.2 How to add and delete disk caches and two-way caches

This subsection is applicable when you will be using disk caches and two-way caches.

This subsection explains how to add and delete disk caches and two-way caches.

Organization of this subsection

(1) Close the cluster

Execute the eztool close command to close the cluster.

eztool close

Command execution example

[Figure]

After you have closed the EADS servers, execute the eztool status command to check the status of the cluster.

eztool status

Command execution example

[Figure]

If the cluster is closed, closed is displayed in the State column.

Create a cache property file for a cache that is to be added. For details about this procedure, see 10.2.2(1) Create cache property files.

Next, execute the eztool createcache command to add the cache.

eztool createcache cache-name

Command execution example

[Figure]

When a cache is created, cache files are created in the following directories:

Cache data files

directory-specified-in-the-eads.cache.disk.n.dir-parameter-in-the-cache-properties/cache-name
Cache index files and cache information files

directory-specified-in-the-eads.cache.disk.info.dir-parameter-in-the-cache-properties/cache-name (the default is management-directory/store/cache-name)

The following methods are provided for deleting a cache and its cache files:

Executing the eztool deletecache --with_deleteecf command

eztool deletecache cache-name --with_deleteecf

Command execution example

[Figure]

Executing the eztool deletecache command and then the eztool deleteecf command

eztool deletecache cache-name
 
eztool deleteecf cache-name

Command execution example

[Figure]

If you have added caches, execute the eztool listcache command to display a list of caches. Verify that the caches have been added.

eztool listcache

Command execution example

[Figure]

If you have deleted caches, execute the eztool listecf -v command to display information about persistent data.

eztool listecf -v

Command execution example

[Figure]

Executing the eztool deletecache --with_deleteecf or eztool deletecache command and then executing the eztool deleteecf command

If caches and cache files have been deleted successfully, false is displayed in the following columns:
- ExCache column
- ExCI column
- ExCD column
In the figure, cache1's cache and cache files have been deleted successfully.
Executing only the eztool deletecache command

If caches have been deleted successfully, false is displayed in the ExCache column and true is displayed in the ExCI and ExCD columns. No values are displayed in the columns starting with UnusedFC.

In the figure, cache3's cache has been deleted successfully.