Date: Wed, 8 Oct 2003 19:32:48 +0900 From: YONETANI Tomokazu <t-yonetani@ergobrains.co.jp> To: freebsd-current@freebsd.org Cc: t-yonetani@ergobrains.co.jp Subject: Re: savecore: first and last dump headers disagree on /dev/ad0b Message-ID: <20031008103248.GA6896@ergobrains.co.jp> In-Reply-To: <20031007180822.J35281@carver.gumbysoft.com> References: <20031007040349.GA10406@ergobrains.co.jp> <20031007180822.J35281@carver.gumbysoft.com>
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On 2003/10/07 18:11:30, Doug White wrote: > On Tue, 7 Oct 2003, YONETANI Tomokazu wrote: > > > The hardware is IBM NetFinity 6000R, and it has ServerWorks ROSB4 UDMA33 > > controller, to which the IDE disk is attached. The size of the IDE hard > > disk is 4Gbytes, and the size of the kernel dump and physical memory both > > fits in that size. > > The ROSB4 is known to have data-corruption problems with running in UDMA > mode. The dump is probably tripping over this, which is why Tor's patch > works since it demotes the device back to PIO. > > You could optionally set hw.ata.ata_dma=0 in loader.conf to disable UDMA > rather than apply the patch. Yes, setting hw.ata.ata_dma=0 allowed me to dump a usable core file. Thanks. -- YONETANI Tomokazu / Ergo-Brains Inc.
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