Storage variables

The variables in the following table are set only on the master host.

  • Use one of the first two groups of variables but not both.
  • Before starting the master host for the first time, you might need to change the defaults of the third group.
  • Typically, the defaults of the last two groups of variables are not changed until Control Center has managed an application for a while and a need arises.

The SERVICED_STORAGE_STATS_UPDATE_INTERVAL variable sets the interval for collecting kernel statistics about the application data thin pool. Its default value is unlikely to require a change until a need arises.

Variable Description Purpose

SERVICED_FS_TYPE
SERVICED_DM_ARGS
SERVICED_DM_BASESIZE
SERVICED_DM_THINPOOLDEV

The specifications of a devicemapper-based application data storage resource for production use. Provide basic information about the data storage resource.

SERVICED_FS_TYPE
SERVICED_DM_LOOPDATASIZE
SERVICED_DM_LOOPMETADATASIZE
SERVICED_ALLOW_LOOP_BACK

The specifications of a devicemapper-based application data storage resource for development use. Provide basic information about the data storage resource.

SERVICED_ISVCS_PATH
SERVICED_VOLUMES_PATH
SERVICED_BACKUPS_PATH

The data storage paths of separate functional components of Control Center internal services. Enable separate storage areas for one or more components. The default installation process puts all three components on the same device.

SERVICED_SNAPSHOT_TTL
SERVICED_SNAPSHOT_USE_PERCENT
SERVICED_MAX_DFS_TIMEOUT

The snapshot retention interval, the percentage of the data storage thin pool that is unused, and the snapshot attempt timeout interval. Prevent the creation of snapshots that are too large to fit the thin pool.

SERVICED_LOGSTASH_MAX_DAYS
SERVICED_LOGSTASH_MAX_SIZE
SERVICED_LOGSTASH_CYCLE_TIME

The variables that manage the amount of space used by the application log storage service. Prevent application logs from filling the storage device that logstash uses.