Backuplog

July 7th, 2009

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NAME

backuplog – captures significant events during file system backup/recovery activities.

DESCRIPTION

Filer captures significant dump/restore-related events and the respective times at which they occur. All events are recorded in one-line messages in /etc/log/backup.

The following are the events filer monitors:

Start: Dump/restore starts.

Restart: Restart of a dump/restore.

End: Dump/restore completes successfully.

Abort: The operation aborts.

Error: Dump/restore hits an unexpected event.

Options: Logs the options as users specify.

Tape_open: Output device is opened successfully.

Tape_close: Output device is closed successfully.

Phase_change: As dump/restore completes a stage.

Dump specific events:

Snapshot: When the snapshot is created or located.

Base_dump: When a valid base dump entry is located.

Logging events:

Start_logging Logging begins.

Stop_logging: Logging ends.

Each event record is in the following format:

TYPE TIME_STAMP IDENTIFIER EVENT (EVENT_INFO)

TYPE: Either dmp(dump), rst(restore) or log events.

TIME_STAMP: Shows date and time at which event occurs.

IDENTIFIER: Unique ID for the dump/restore.

EVENT: The event name.

EVENT_INFO: Event specific information.

A typical event record message looks like:

dmp Thu Apr 5 18:54:56 PDT 2001 /vol/vol0/home(5) Start (level 0, NDMP)

In the particular example:

TYPE: = dmp

TIME_STAMP: = Thu Apr 5 18:54:56 PDT 2001

IDENTIFER: = /vol/vol0/home(5)

EVENT: = Start

EVENT_INFO: = level 0, NDMP

All event messages go to /etc/log/backup. On every Sunday at 00:00, backup is roated to backup.0 and backup.0 is moved to backup.1 and so on. Up to 6 log files(spanning up to 6 weeks) are kept.

The registry option backup.log.enable controls the enabling and disabling of the logging with values on and off respectively. The functionality is enabled by default. (See options for how to set options.)