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I have dl360 G7 servers. some times kernel got panic. I understood, that server have hardware watchdog timer.

dmesg | grep wdt [ 6.344992] hpwdt 0000:02:00.0: PCI INT A -> GSI 16 (level, low) -> IRQ 16 [ 6.345563] hpwdt: New timer passed in is 30 seconds.

Server already is in production. Question is: how i can enable it? Did i need some software to install on system too? On server is running debian. I understood that i need on system some software that tells watchdog, that system is alive. Or i am wrong? Thanks!

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1 Answer 1

up vote 3 down vote accepted

A watchdog timer in this context resets the system or takes some action if it loses a "pulse". HP ProLiant servers have a hardware watchdog that ties into the Automatic Server Recovery (ASR) feature. The ASR reboots the server if it detects a hang lasting a certain period of time (default is 10 minutes).

On your Debian system, the hpwdt == HP Watchdog Timer. This is a kernel module. Instructions for its use are contained within the kernel documentation.

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when i enable ASR, then i need to configure some software? Or kernel by default knows answers to ASR questions ? –  Guntis May 14 '12 at 19:16
    
You won't need to make any software changes. –  ewwhite May 14 '12 at 21:08

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