Bug 175664 - Tape backup fails using aic79xx driver
Summary: Tape backup fails using aic79xx driver
Keywords:
Status: CLOSED CANTFIX
Alias: None
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel
Version: 3.0
Hardware: i686
OS: Linux
medium
medium
Target Milestone: ---
Assignee: Tom Coughlan
QA Contact: Brian Brock
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2005-12-13 18:53 UTC by David Milburn
Modified: 2008-05-09 17:34 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2006-03-23 14:13:13 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)
dmesg output (9.08 KB, text/plain)
2005-12-13 18:55 UTC, David Milburn 		no flags Details
Contents of /proc/scsi/aic79xx/2 under RHEL4 (2.08 KB, text/plain)
2006-01-26 20:10 UTC, David Milburn 		no flags Details
RHEL4 plus aic79xx-2.0.15 /proc/scsi/aic79xx/2 (2.03 KB, text/plain)
2006-01-26 20:24 UTC, David Milburn 		no flags Details
Contents of /proc/scsi/aic79xx/1 under RHEL4 (2.59 KB, text/plain)
2006-01-26 20:25 UTC, David Milburn 		no flags Details
View All

Description David Milburn 2005-12-13 18:53:43 UTC 
From Bugzilla Helper:
User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.12) Gecko/20050922 Fedora/1.0.7-1.1.fc3 Firefox/1.0.7

Description of problem:
Writing heavily to tape drive causes aic79xx driver to report data paritiy errors, resulting in bus reset and resyncing tape drives at reduced speeds.

Version-Release number of selected component (if applicable):
kernel-2.4.21-37.EL

How reproducible:
Always

Steps to Reproduce:
1. Connect Overland NEO 4100 SDLT320 tape library to Adaptec 39320D-R SCSI HBA.
2. Backup to tape with Veritas NetBackup 5.1 Enterprise Server.
  

Actual Results:  Tape backup hangs and driver begins "Dump Card State" messages and reports data parity errors, resets the bus, and resyncs the drives. The tape devices can no longer be accessed until system is rebooted.

Expected Results:  Tape backup should complete successfully.

Additional info:
Comment 1 David Milburn 2005-12-13 18:55:16 UTC 
Created attachment 122193 [details]
dmesg output
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