Bug 115427 - Massive workload combined with ESS flashcopy leading to I/O hang
Massive workload combined with ESS flashcopy leading to I/O hang
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 3
Classification: Red Hat
Component: kernel (Show other bugs)
3.0
s390 Linux
high Severity high
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Assigned To: Pete Zaitcev
Brock Organ
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Depends On:
Blocks:
  Show dependency treegraph
 
Reported: 2004-02-12 07:42 EST by Ingolf Salm
Modified: 2007-11-30 17:07 EST (History)
3 users (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
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Last Closed: 2004-09-02 00:31:05 EDT
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RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
path for device qualification problem (3.06 KB, patch)
2004-02-17 13:03 EST, Ingolf Salm
no flags Details | Diff

  None (edit)
Description Ingolf Salm 2004-02-12 07:42:52 EST
Description of problem:
Symptom:     FlashCopy IO hang
Problem:     State change interrupt handler checks only first request 
in cqr-queue, but in case the fastpath for start_IO was successful, 
it might happen that the second request is long busy.
Solution:    Check the whole cqr-queue for long busy.
LTC bugzilla: 4676
Comment 1 Ingolf Salm 2004-02-12 07:48:14 EST
fix is necessary for SCSI device qualification. In last status 
meeting Bob Johnson and Hans-Georg Markgraf (IBM) agreed that it need 
to be fixed in RHEL 3 Update 2.
True, Bob ?
Comment 2 Pete Zaitcev 2004-02-13 19:30:34 EST
Ingolf, please attach the patch.
Comment 3 Ingolf Salm 2004-02-16 12:30:21 EST
Pete, I will look for the patch.
Comment 4 Georg Markgraf 2004-02-17 05:26:55 EST
This is required for DevQual with ESCON, FICON
Comment 5 Bob Johnson 2004-02-17 09:46:04 EST
Why is IBM removing our internal QA contact ?
Adding Brock back in.
Comment 6 Ingolf Salm 2004-02-17 13:03:56 EST
Created attachment 97761 [details]
path for device qualification problem
Comment 7 Ernie Petrides 2004-05-12 23:47:12 EDT
The fix for this problem has just been committed to the RHEL3 U3
patch pool this evening (in kernel version 2.4.21-15.4.EL).
Comment 9 John Flanagan 2004-09-02 00:31:05 EDT
An errata has been issued which should help the problem 
described in this bug report. This report is therefore being 
closed with a resolution of ERRATA. For more information
on the solution and/or where to find the updated files, 
please follow the link below. You may reopen this bug report 
if the solution does not work for you.

http://rhn.redhat.com/errata/RHBA-2004-433.html

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