NAME
butc_logs - Message logs from the Tape Coordinator process
DESCRIPTION
The Backup System Tape Coordinator (butc) process generates two log
files per device, one for error messages and one for actions.
Error Message Log
The TE_device_name file logs error messages generated by the Backup
System Tape Coordinator that controls the tape device or backup data
file indicated by device_name.
As the Tape Coordinator initializes, it creates the file in ASCII
format in the /var/lib/openafs/backup directory. If there is an
existing file, the Tape Coordinator renames it to TE_device_name.old>,
overwriting the existing TE_device_name.old> file if it exists.
For a tape device, the Tape Coordinator derives the variable
device_name portion of the filename from the device pathname listed in
the local /var/lib/openafs/backup/tapeconfig file, by stripping off the
initial "/dev/" string and replacing any other slashes in the name with
underscores. For example, the filename for a device called /dev/rmt/4m
is TE_rmt_4m. Similarly, for a backup data file the Tape Coordinator
strips off the initial slash ("/") and replaces any other slashes in
the name with underscores. For example, the filename for a backup data
file called /var/tmp/FILE is TE_var_tmp_FILE.
The messages in the file describe the error and warning conditions the
Tape Coordinator encounters as it operates. For instance, a message can
list the volumes that are inaccessible during a dump operation, or warn
that the Tape Coordinator is overwriting a tape or backup data file.
The messages also appear in the /var/lib/openafs/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 Backup System
Tape Coordinator that controls the tape device or backup data file
indicated by device_name. It also records the same error and warning
messages written to the TE_device_name file.
As the Tape Coordinator initializes, it creates the file in ASCII
format in the /var/lib/openafs/backup directory. If there is an
existing file, the Tape Coordinator renames it to TL_device_name.old,
overwriting the existing TL_device_name.old file if it exists.
For a tape device, the Tape Coordinator derives the variable
device_name portion of the filename from the device pathname listed in
the local /var/lib/openafs/backup/tapeconfig file, by stripping off the
initial "/dev/" string and replacing any other slashes in the name with
underscores. For example, the filename for a device called /dev/rmt/4m
is TL_rmt_4m. Similarly, for a backup data file the Tape Coordinator
strips off the initial slash ("/") and replaces any other slashes in
the name with underscores. For example, the filename for a backup data
file called /var/tmp/FILE is TL_var_tmp_FILE.
SEE ALSO
tapeconfig(5), butc(8)
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IBM Corporation 2000. <http://www.ibm.com/> All Rights Reserved.
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