From owner-freebsd-current Mon Dec 13 0: 3:25 1999 Delivered-To: freebsd-current@freebsd.org Received: from freebsd.dk (freebsd.dk [212.242.42.178]) by hub.freebsd.org (Postfix) with ESMTP id D7C5914FAC for ; Mon, 13 Dec 1999 00:03:22 -0800 (PST) (envelope-from sos@freebsd.dk) Received: (from sos@localhost) by freebsd.dk (8.9.3/8.9.1) id JAA33772; Mon, 13 Dec 1999 09:03:16 +0100 (CET) (envelope-from sos) From: Soren Schmidt Message-Id: <199912130803.JAA33772@freebsd.dk> Subject: Re: Errors from the ata disk driver In-Reply-To: from "joeo@nks.net" at "Dec 11, 1999 03:35:24 pm" To: joeo@nks.net Date: Mon, 13 Dec 1999 09:03:16 +0100 (CET) Cc: freebsd-current@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL54 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 8bit Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG It seems joeo@nks.net wrote: > Will the backdown to PIO mode be permanent till the next reboot of the > machine, or will the driver be able to attempt to return to DMA mode after > a timeout period. I'm only seeing these errors under really heavy disk > activity (mutlitple nfs readers and writers plus rsync/mirror jobs to the > vinum volume in question). The fallback is permanent, but it only occurs after 3 retries on the failed request. If it fails 3 times in a row, there is something really wrong on that channel, ie bad cableing etc etc... -Søren To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message