Re: Big SMP machine hangs often [debug included]

From: Alan Cox (alan@lxorguk.ukuu.org.uk)
Date: Wed May 17 2000 - 13:43:53 EST


> - AMI MegaRaid EC9F:1.24 controller with 4 18 GB disks in RAID5 mode
> - Linux 2.2.13 kernel compiled with gcc 2.7.2.3 and SMP / 2GB support

Get at least the 1.07b MegaRAID driver and also the 3.10 or higher firmware.

> solve, or that it is something else. It looks like the kernel gets
> stuck in add_timer/timer_bh somehow. Note also the strange "buffer hashed"
> output.

Adding a timer continually for now or past can cause this hang. Try 2.2.15
and the delack-5 patch from Andrea. Andrea also did a patch to stop timers
that get queued this way hanging the box so you can debug it

Alan

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.rutgers.edu
Please read the FAQ at http://www.tux.org/lkml/



This archive was generated by hypermail 2b29 : Tue May 23 2000 - 21:00:13 EST