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butc_logs

Section: AFS File Reference (5)
Updated: OpenAFS
Index 

NAME

butc_logs - Message logs from the Tape Coordinator process 

DESCRIPTION

The Backup System Tape Coordinator (butc) process generates two logfiles per device, one for error messages and one for actions. 

Error Message Log

The TE_device_name file logs error messages generated by the BackupSystem Tape Coordinator that controls the tape device or backup data fileindicated by device_name.

As the Tape Coordinator initializes, it creates the file in ASCII formatin the /usr/afs/backup directory. If there is an existing file, theTape Coordinator renames it to TE_device_name.old>, overwriting theexisting TE_device_name.old> file if it exists.

For a tape device, the Tape Coordinator derives the variabledevice_name portion of the filename from the device pathname listed inthe local /usr/afs/backup/tapeconfig file, by stripping off the initial/dev/ string and replacing any other slashes in the name withunderscores. For example, the filename for a device called /dev/rmt/4mis TE_rmt_4m. Similarly, for a backup data file the Tape Coordinatorstrips off the initial slash (/) and replaces any other slashes in thename with underscores. For example, the filename for a backup data filecalled /var/tmp/FILE is TE_var_tmp_FILE.

The messages in the file describe the error and warning conditions theTape Coordinator encounters as it operates. For instance, a message canlist the volumes that are inaccessible during a dump operation, or warnthat the Tape Coordinator is overwriting a tape or backup data file. Themessages also appear in the /usr/afs/backup/TL_device_name file,which traces most of the Tape Coordinator's actions. 

Action Log

The TL_device_name file logs the actions performed by the BackupSystem Tape Coordinator that controls the tape device or backup data fileindicated by device_name. It also records the same error and warningmessages written to the TE_device_name file.

As the Tape Coordinator initializes, it creates the file in ASCII formatin the /usr/afs/backup directory. If there is an existing file, theTape Coordinator renames it to TL_device_name.old, overwriting theexisting TL_device_name.old file if it exists.

For a tape device, the Tape Coordinator derives the variabledevice_name portion of the filename from the device pathname listed inthe local /usr/afs/backup/tapeconfig file, by stripping off the initial/dev/ string and replacing any other slashes in the name withunderscores. For example, the filename for a device called /dev/rmt/4mis TL_rmt_4m. Similarly, for a backup data file the Tape Coordinatorstrips off the initial slash (/) and replaces any other slashes in thename with underscores. For example, the filename for a backup data filecalled /var/tmp/FILE is TL_var_tmp_FILE. 

SEE ALSO

the tapeconfig(5) manpage,the butc(8) manpage 

COPYRIGHT

IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.

This documentation is covered by the IBM Public License Version 1.0. It wasconverted from HTML to POD by software written by Chas Williams and RussAllbery, based on work by Alf Wachsmann and Elizabeth Cassell.


 

Index

NAME
DESCRIPTION
Error Message Log
Action Log
SEE ALSO
COPYRIGHT

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