HP StorageWorks 2/32 SAN switch 2/32 version 4.0.2b release notes - Page 18

Firmware Enhancements Error Log Enhancements The Error Log subsystem now retains a maximum of 1,536 messages in RAM, that is, a total of 256 messages for each error message level (Panic, Critical, Error, Warning, Info, and Debug). In addition, important messages are stored in a separate persistent error log to guarantee that they are not lost in case of power outage or system reboot. Note: The enhancement prevents messages of lesser severity from overwriting messages of greater severity. For example, Warning messages cannot overwrite Error, Critical or Panic messages. Error log updates include: ■ The error log subsystem supports persistent logging. Each switch integrates its own persistent log. ■ The persistent log is preserved across power cycles and system reboots. ■ The persistent log has a default capacity to store 1,024 error log entries. ■ The persistent log can be resized at run time without having to reboot the switch or the system. ■ The persistent log is configurable to a maximum of 2,048 entries. The persistent error log can be resized to between 1,024 and 2,048 entries. ■ The persistent log is implemented as a circular buffer. When more than maximum entries are added to the persistent log, new entries overwrite old entries. ■ All error messages of levels Panic and Critical are automatically saved in the persistent log as they are logged. This guarantees that critical or panic level messages are not lost in the event of unexpected system reboot or failover. ■ A new command to control/filter error log messages. For example, the user may specify that all log messages marked Warning remain in the persistent error log. ■ The commands errdump or errshow display a combination of the persistent log messages saved during previous system run time cycles, and the error log messages generated during the current run time cycle. 18 SAN switch 2/32 Version 4.0.2b Release Notes