Date: Fri, 27 Aug 2004 19:12:11 +0530 From: Subhro <subhro.kar@gmail.com> To: freebsd-questions@freebsd.org Subject: Re: TIMEOUT - WRITE_DMA errors in security output Message-ID: <b2807d0404082706425d8ca25a@mail.gmail.com> In-Reply-To: <20040827131301.GA58030@keyslapper.org> References: <20040827131301.GA58030@keyslapper.org>
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Goofy drive data cables? Regards S. On Fri, 27 Aug 2004 09:13:01 -0400, Louis LeBlanc <freebsd@keyslapper.org> wrote: > Hey all. I'm seeing some things I'm not comfortable with in the > security output from one of my systems - a new Dell Dimension 8300. >=20 > This is what I'm seeing: >=20 > key2.keyslapper.org kernel log messages: > > ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=3D31672255 > > ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=3D31672383 >=20 > The ad4 timeouts have happened before. They usually coincide with a > moderate to large port build. If I'm building some huge package like > OpenOffice or xorg when this happens, the whole system hangs. No > mouse, keyboard, nothing. Last time I just left it to see if things > resolved, and next morning I found it freshly rebooted. (I did > eventually get both OpenOffice and xorg built though) >=20 > Ad4 is a 160G hard drive with the following partitioning: > $ df -k > Filesystem 1K-blocks Used Avail Capacity Mounted on > /dev/ad4s1a 1012974 57462 874476 6% / > devfs 1 1 0 100% /dev > /dev/ad4s1h 57896520 4 53264796 0% /export > /dev/ad4s1g 60931274 2371112 53685662 4% /home > /dev/ad4s1e 1012974 7882 924056 1% /tmp > /dev/ad4s1f 20308398 4000050 14683678 21% /usr > /dev/ad4s1d 8122126 85068 7387288 1% /var >=20 > fdisk output is: > # fdisk > ******* Working on device /dev/ad4 ******* > parameters extracted from in-core disklabel are: > cylinders=3D310019 heads=3D16 sectors/track=3D63 (1008 blks/cyl) >=20 > Figures below won't work with BIOS for partitions not in cyl 1 > parameters to be used for BIOS calculations are: > cylinders=3D310019 heads=3D16 sectors/track=3D63 (1008 blks/cyl) >=20 > Media sector size is 512 > Warning: BIOS sector numbering starts with sector 1 > Information from DOS bootblock is: > The data for partition 1 is: > sysid 165 (0xa5),(FreeBSD/NetBSD/386BSD) > start 63, size 312496317 (152586 Meg), flag 80 (active) > beg: cyl 0/ head 1/ sector 1; > end: cyl 1023/ head 254/ sector 63 > The data for partition 2 is: > <UNUSED> > The data for partition 3 is: > <UNUSED> > The data for partition 4 is: > <UNUSED> >=20 > Any other info that would help, please let me know, but I'd like to > know what the cause could be and how to fix it. >=20 > TIA > Lou > -- > Louis LeBlanc FreeBSD@keyslapper.org > Fully Funded Hobbyist, KeySlapper Extrordinaire :) > http://www.keyslapper.org =D4=BF=D4=AC >=20 > Pudder's Law: > Anything that begins well will end badly. > (Note: The converse of Pudder's law is not true.) > _______________________________________________ > freebsd-questions@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-questions > To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.o= rg" >=20 --=20 Subhro Sankha Kar School of Information Technology Block AQ-13/1 Sector V ZIP 700091 India
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