Date: Wed, 24 Mar 2004 17:02:37 -0500 From: Don Bowman <don@sandvine.com> To: 'Scott Long' <scottl@freebsd.org>, Don Bowman <don@sandvine.com> Cc: 'Kris Kennaway' <kris@obsecurity.org> Subject: RE: LOR on current Message-ID: <FE045D4D9F7AED4CBFF1B3B813C85337045D86FA@mail.sandvine.com>
next in thread | raw e-mail | index | archive | help
From: Scott Long [mailto:scottl@freebsd.org] > Don Bowman wrote: > > From: Kris Kennaway [mailto:kris@obsecurity.org] > > > >>On Wed, Mar 24, 2004 at 03:23:36PM -0500, Don Bowman wrote: > >> > >> > >>>>Right, I think that's not the cause of your lockup :) > >>> > >>>Not being one to believe in coincidences... I'm typing > >>>on the serial console. The machine halts, i can no longer type. > >>>some seconds pass, out pops that message. This time too it > >>>returned. Most times (when i run two postgresql vacuums > >> > >>simulatenously > >> > >>>for example), that's the end of it. > >>> > >>>I will continue to investigate. > >> > >>Check for disk problems..I have often experienced hangs or > lockups on > >>machines with faulty disks. > > > > > > 6-disk raid 5 behind ASR. All disks report optimal, controller > > reports optimal. I know the hangs you mean, from the vm > > swapin etc which holds all the locks. I don't think this > > is they. > > > > with ahd i would get scsi sense errors in the log for machines > > with problems [CRC errors etc], i don't have a for what asr does > > in this case. > > > > ran a 96 hour memory test (memtest86), with ecc checking, there > > were no soft or hard errors. Ran machine to 40 degrees C ambient > > in environmental chamber, its all good. Its got 3 power supplies, > > all are operational, fed from UPS. > > This is a software problem somewhere I think. > > > > I'm curious, how many people use ASR with current? It seems > > like it might be somewhat unloved. > > > > It is unloved. Adaptec provides no official support for it, and I > have many more things that are a higher priority. I'm not against > working on it, but it's hard to justify it at the moment. Anyways, > it wouldn't surprise me if the controller or driver was going out to > lunch and stalling the VM, but we probably need to do a lot more > investigation to support that. I assume that you have both > WITNESS and > INVARIANTS turned on? witness and invariants are indeed on. can i switch asr to aac without reformatting my disks?
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?FE045D4D9F7AED4CBFF1B3B813C85337045D86FA>