dac960mon(ADM)

Syntax

daemon mode
dac960mon [logfile] &

Description

dac960mon constantly monitors DAC960 adapters and reports drive failures (standby rebuild, background rebuild progress ) to the system console and to a log file. A maximum of 4 DAC960 adapters can be monitored using the monitor.

Standby rebuild

will take place if a 'hot spare' is already defined. In the event of a drive failure, the DAC960 adapter automatically starts rebuilding a new drive (hot spare).

Background rebuild

refers to the administrator initiated rebuild process.

• If the monitor notices a drive failure, the monitor reports it every 10 seconds. After a period of 30 seconds, if the drive is still in a failed state, the monitor records that information and ceases reporting errors about that failed drive.

• In the event that a drive fails and a standby rebuild is started, the monitor reports information about the failed drive and the new drive (hot spare) that replaces the failed drive. It also reports the progress of the 'system drive rebuild progress' every 60 seconds. The rebuild progress is reported until all dependent system drives are rebuilt.

• The monitor reports the progress of a background rebuild every 60 seconds.
  

• The monitor reports any errors encountered during the last write-back operation. Up to 100 errors are reported by the monitor. The information is reported in the following format:
  
  System Drive Number Start Block Number Number of Blocks

  It can be invoked as a daemon in background mode or as a foreground process.

Options

logfile

The log file is created in /usr/adm directory. The default log file name is dac960mon.log. logfile can also be specified on the command line.

Files

See also