Date: Fri, 27 Aug 2004 09:13:01 -0400 From: Louis LeBlanc <FreeBSD@keyslapper.org> To: FreeBSD Questions <freebsd-questions@FreeBSD.org> Subject: TIMEOUT - WRITE_DMA errors in security output Message-ID: <20040827131301.GA58030@keyslapper.org>
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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.
This is what I'm seeing:
key2.keyslapper.org kernel log messages:
> ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=31672255
> ad4: TIMEOUT - WRITE_DMA retrying (2 retries left) LBA=31672383
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)
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
fdisk output is:
# fdisk
******* Working on device /dev/ad4 *******
parameters extracted from in-core disklabel are:
cylinders=310019 heads=16 sectors/track=63 (1008 blks/cyl)
Figures below won't work with BIOS for partitions not in cyl 1
parameters to be used for BIOS calculations are:
cylinders=310019 heads=16 sectors/track=63 (1008 blks/cyl)
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>
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.
TIA
Lou
--
Louis LeBlanc FreeBSD@keyslapper.org
Fully Funded Hobbyist, KeySlapper Extrordinaire :)
http://www.keyslapper.org ԿԬ
Pudder's Law:
Anything that begins well will end badly.
(Note: The converse of Pudder's law is not true.)
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