Date: Tue, 07 Dec 1999 19:37:28 +0100 From: "D. Rock" <rock@dead-end.net> To: obrien@FreeBSD.ORG Cc: sos@FreeBSD.ORG, current@FreeBSD.ORG Subject: Re: ATA driver as the default Message-ID: <384D53E8.27ABF47D@dead-end.net> References: <19991205193638.B74670@dragon.nuxi.com>
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David O'Brien schrieb: > > Since the ATA driver is destined to be the default in 4.0-R, and we hare > hitting the feature freeze date; can we make the switch now? > > I think it is very important to get ATA into more hands to see where it > breaks. It certainly has problems on my Vaio 505 laptop; and I wonder > where else it will have problems. Better to find them now than right > before release. I occasionaly tested the new ATA driver on my laptop but decided to go back to the old wd driver: There seems to be a problem if I enable DMA for the hard disk. With DMA turned on the disk sometimes hung for a few seconds, then got resetted and worked again. No data corruption occured. This happened under FreeBSD and Windows. I therefor disabled DMA transfer for the disk. The CD-ROM works just happily with DMA turned on though. Disk and CD-ROM are connected to the same IDE controller (Intel standard). I just want a flag to selectively disable DMA transfer for certain files, just like I could for the old wd driver. I just re-enabled the ATA driver again after reading the change log of better error handling and automatic falldown DMA->PIO under specific circumstances. But a few days later, while making world (with the ata driver), the system crashed quite heavily. The file system was totally screwed up afterwards (I found my /usr/local after some heavy searching: It magically moved to /usr/obj/usr/src/tmp/usr/share/zoneinfo (!) and got tons of fsck messages). The file system had softupdates enabled. I don't know the last kernel messages before the crash (was running X at that time). Daniel To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message
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