scsi transport errors
2007-12-25 11:39:00
Thanks to those who replied:
Cedo Vicente <cedo@exar.com>
Kevin.Sheehan@uniq.com.au (Kevin Sheehan {Consulting Poster Child})
Herbert Wengatz <hwe@uebemc.siemens.de>
dzambon@afit.af.mil (Dan A. Zambon)
root@wisdom.maf.nasa.gov (Mark Hargrave)
Here's the top two.... the first one worked....others suggested "check cables"
"check termination" etc. all of which I did twice after I got the
suggestions...
Number one answer begs another question:
I assume that in /etc/system I am changing or modifying kernel parameters
without having to recomplie kernal etc. What are the tree parameters specified
below AND (bigger question) where are ALL kernel parameters defined/explained.
By the way, this was a SunServer 1000 at Solaris 2.4 with an external 4.2 gig
Sun disk on a fast/wide scsi adapter (sorry I forgot to mention that).
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I had a similar problem with Solaris 2.5.0. I ended up added the following
command to the /etc/system file to get this fixed. I was told by Sun that 2.5.0
had alot of SCSI releated bugs and that I should upgrade to 2.5.1. After
upgrading to 2.5.1, the changes to the /etc/system were no longer required.
ADDED for Solaris 2.5.0
set sd:sd_max_throttle=10
set scsi_options=0x58
set scsi_reset_delay=10000
Cedo Vicente
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>From kevin@uniq.com.au Kevin Sheehan
You should probably include the other messages that come with this - if
you got something about "disconnected" or "tagged cmd" timing out,
then you may want to try turning off tagged queueing in /etc/system
by modifying scsi_options (flags are documented in
/usr/include/sys/scsi/conf/autoconf.h) but remember it will turn it
off for *everything*.
One thought really - more info. In general, you should tell us the machine,
the OS, what kind of disk &c. In this case, I'm taking a wild guess.
uname -a and the rest of the error log, as well as some info on the disk
failing would have helped a lot.
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>From dsf@interpath.com
I received the same message on my machine once. My problem was that I had
too many devices off one SCSI controller. I had:
2 internal disks, 1 cdrom, 2 external disks, and 1 tape drive.
Normally this is okay...but the tape drive was inside a jukebox. The
jukebox device put me 1 over the limit. Moved jukebox and tape drive to
another controller and the problem disappeared.
Your problem might also be caused by the usual stuff--bad terminators,
cables, or loose connections. Good Luck.
Dan Freedman
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--
Tom Trainor Email: tjtraino@to.mobil.com
Mobil Oil Corp. Phone: 703-846-3924
3225 Gallows rd / Rm 2B-308 Fax: 703-846-1460
Fairfax Va. 22037-0001
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