Cisco DBDS Utilities 5.1 Technical References

  

 

Operations Alert Bulletin 
Turning Off the preserveLog Utility 

Cisco is aware of several instances where the Digital Network Control System 

(DNCS) slowed down or became non-responsive while the system operator was 

performing a backup of the DNCS file system. Cisco engineers have examined these 

cases and discovered that the preserveLog utility was running at the same time that 

the system operator was trying to back up the file system. 
The preserveLog utility is a file-archiving utility, developed by Cisco. This utility 

collects data from various DNCS processes and writes that data to log files on the 

DNCS. The preserveLog utility usually runs from the crontab file on the DNCS, 

where it runs without operator intervention. On some systems, this utility is 

configured to run as often as every 5 minutes.  
When the preserveLog utility runs at the same time a backup of the DNCS file 

system is in progress, the /export/home file system of the DNCS may run out of 

disk space. When the file system runs out of disk space, DNCS performance may be 

affected. System operators should disable the preserveLog utility before backing up 

the DNCS file system.