From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jeff Garzik Subject: Re: max_sectors in libata when using md Date: Thu, 26 Aug 2004 13:26:22 -0400 Sender: linux-scsi-owner@vger.kernel.org Message-ID: <412E1D3E.2050307@pobox.com> References: <412DFFA9.8030504@wasp.net.au> <8746466a0408260852205a7842@mail.gmail.com> <412E1039.7030508@pobox.com> <412E135B.1030605@wasp.net.au> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <412E135B.1030605@wasp.net.au> To: Brad Campbell Cc: Dave , linux-ide@vger.kernel.org, SCSI Mailing List , RAID Linux List-Id: linux-raid.ids Brad Campbell wrote: > In which case, these drives need to be knocked back to UDMA66 to > function properly on anything later than 2.6.6. Don't know why. > I have tried multiple drives (I have 5 of them), multiple cables (lots > of those) and multiple bridge boards (I have 6 of those). There is no > combination that is reliable on the VIA controller with any transfer > larger than about 0x80 sectors *OR* speeds greater than UDMA66 *OR* > Kernel 2.6.6 or prior. We could always eliminate lba48 max-sectors increase on VIA controllers... Jeff