About rolling over unified log files
To prevent log files from becoming too large, or to control when or how often logs are created, you can set a log rollover option. When a file size or time setting is reached, the current log file is closed. New log messages for the logging process are written or "rolled over" to a new log file.
See Log retention and log size.
You can set log file rollover to occur based on file size, time of day, or elapsed time. Set the conditions by using the vxlogcfg command with the options described in Table: vxlogcfg options that control the rollover of the unified log files.
Table: vxlogcfg options that control the rollover of the unified log files
Option | Description |
|---|---|
MaxLogFileSizeKB | Specifies the maximum size that is allowed for the log file (in kilobytes) before rollover occurs, if the RolloverMode is set to FileSize. |
RolloverAtLocalTime | Specifies the time of day at which the log file is rolled over, if the RolloverMode is set to LocalTime. |
RolloverPeriodInSeconds | Specifies a period of time in seconds after which the log file is rolled over, if the RolloverMode is set to Periodic. |
MaxLogFileSizeKB or RolloverAtLocalTime | Specifies that the log file rollover occurs whenever the file size limit or the local time limit is reached, whichever is first. An example of the command: vxlogcfg -a -p 51216 -g Default MaxLogFileSizeKB=256 RolloverAtLocalTime=22:00 |
MaxLogFileSizeKB or RolloverPeriodInSeconds | Specifies that the log file rollover occurs whenever the file size limit or the periodic time limit is reached, whichever is first. |
A complete description of vxlogcfg is in the NetBackup Commands Reference Guide.
By default, log file rollover is based on a file size of 51200 KB. When a log file reaches 51200 KB in size, the file closes and a new log file opens.
The following example sets the NetBackup (prodid 51216) rollover mode to Periodic.
# vxlogcfg -a --prodid 51216 --orgid 116 -s RolloverMode=Periodic
RolloverPeriodInSeconds=86400The previous example uses the vxlogcfg command with the RolloverMode option. It sets rollover mode for nbpem (originator ID 116) to Periodic. It also sets the interval until the next nbpem log file rollover to 24 hours (86400 seconds).
In the following example, the file names show the log file rollover with the rotation ID incremented:
/usr/openv/logs/nbpem/51216-116-2201360136-041029-0000000000.log
/usr/openv/logs/nbpem/51216-116-2201360136-041029-0000000001.log
/usr/openv/logs/nbpem/51216-116-2201360136-041029-0000000002.logIn addition, you can use log file rotation with the following:
Logs for the server processes that use unified logging
See Originator IDs for the entities that use unified logging.
Certain legacy logs
The unified logging files that the Bare Metal Restore process bmrsavecfg creates