Vinod Kashyap wrote: > You seem to be booting off of a 9000 (twa) controller and not 7000/8000 > (twe). > It could be because of a 9000 firmware bug that you are not being able > to > get the dump. The firmware wrongly interprets physical address 0x0 as > invalid > during dumps, and fails the operations. This bug will be fixed in > future > firmware releases.
Ok, it's been a while, here is an update on this. I ran a heavily instrumented kernel for two weeks on the server, it did not crash in that time. I then took out the witness and kdb/ddb stuff, because the decreased performance was a bit of a nuisance, however i retained the ability to obtain a crash dump. I had to limit physical memory, put it on 1.8GB in loader.conf:hw.physmem because swap and physmem are both 2GB. Tested with 'reboot -d' gave me a core dump. Without the debug stuff in the kernel, it crashed within 2 days, same story: postgresql process, function propagate_priority. However, no dump was written to disk :( Furthermore, i've been seeing the same crash (in propagate_priority) on another box in mysql processes. Both servers seem to panic every 2-3 days. I have another server of the exact same hardware configuration, but it is mainly idling most of the time. Haven't seen that one crash yet. I am thinking now that it is a bug in the twa driver, so i'll have to dig in to that. Furthermore, it seems to have to do with some sort of concurrency issue or otherwise timing-sensitive issue, because slowing the kernel down with debug code seems to avoid the panic. But, as i am completely new to the freebsd kernel and don't even know what turnstiles are, i imagine i will have a hard time. So if anyone can offer some help, please :) Ok, thanks for your attention, Koen -- K.F.J. Martens, Sonologic, http://www.sonologic.nl/ Networking, hosting, embedded systems, unix, artificial intelligence. Public PGP key: http://www.metro.cx/pubkey-gmc.asc Wondering about the funny attachment your mail program can't read? Visit http://www.openpgp.org/ _______________________________________________ freebsd-hackers@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-hackers To unsubscribe, send any mail to "[EMAIL PROTECTED]"
