From owner-freebsd-questions Mon Dec 20 13:41:12 1999 Delivered-To: freebsd-questions@freebsd.org Received: from abused.com (abused.com [216.86.128.80]) by hub.freebsd.org (Postfix) with ESMTP id 45AB91535F for ; Mon, 20 Dec 1999 13:41:09 -0800 (PST) (envelope-from gvbmail@tns.net) Received: from GVB (gvb.tns.net [216.86.143.6]) by abused.com (8.9.3/I feel abused.) with ESMTP id NAA01089 for ; Mon, 20 Dec 1999 13:40:52 -0800 (PST) Message-Id: <4.2.2.19991220133203.01c44c48@abused.com> X-Sender: gvbmail@mail.tns.net X-Mailer: QUALCOMM Windows Eudora Pro Version 4.2.2 Date: Mon, 20 Dec 1999 13:41:41 -0800 To: freebsd-questions@freebsd.org From: GVB Subject: FreeBSD and RAID IO Problems Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii"; format=flowed Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG I am running FreeBSD 3.3-Stable on a PentiumII 266 with 384 megs of RAM as a SMTP/POP3 mail server. The primary OS disk is a IBM 4.5 UW SCSI drive which is da0. da1 is another 4.5 UW IBM drive which is GOING to be used for mirroring the OS disk (right now its doing nothing). da2 is a 18 gig RAID setup on a DPT Raid card using an externel 3 position RAID box that is mounted as /var/mail and /var/spool/mqueue. dpt0: rev 0x02 int a irq 12 on pci0.10.0 dpt0: DPT PM2144UW FW Rev. 07M1, 1 channel, 64 CCBs da0 at dpt0 bus 0 target 0 lun 0 da0: Fixed Direct Access SCSI-2 device da0: Tagged Queueing Enabled da0: 4357MB (8924999 512 byte sectors: 255H 63S/T 555C) da1 at dpt0 bus 0 target 1 lun 0 da1: Fixed Direct Access SCSI-2 device da1: Tagged Queueing Enabled da1: 4357MB (8924999 512 byte sectors: 255H 63S/T 555C) da2 at dpt0 bus 0 target 2 lun 0 da2: Fixed Direct Access SCSI-2 device da2: 17365MB (35565440 512 byte sectors: 255H 63S/T 2213C) My problem is that multiple times per day (at least 5 times or so per hour) the machine stops responding for anywhere from 5-15 seconds. It still answers incoming connections, eg; telnet to port 25 and the connection is established, but I get nothing from the server, no identification or anything. Same thing with any other port. When I am on the machine locally the console locks and I cannot input until this period is over. I have been trying to trouble shoot it down, and it seems when the KB/t hits 64.00 on the raid is when it locks. tty da0 da1 da2 cpu tin tout KB/t tps MB/s KB/t tps MB/s KB/t tps MB/s us ni sy in id 0 76 0.00 0 0.00 0.00 0 0.00 64.00 1 0.06 1 0 1 0 98 Where can I begin to figure out what this problem is? Is it the block size that I built the RAID with? Could it be bad memory on the RAID card or a bad RAID card? I appreciate any help anyone can give me. GVB (On a side note.. does anyone know if there has been any RAID management software released that will work with FreeBSD and this card?) To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message