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Bug 90191 - data older than bdflush interval stays in memory till journal is full
data older than bdflush interval stays in memory till journal is full
Product: Red Hat Linux
Classification: Retired
Component: kernel (Show other bugs)
i386 Linux
medium Severity high
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Assigned To: Arjan van de Ven
Brian Brock
Depends On:
  Show dependency treegraph
Reported: 2003-05-05 05:06 EDT by Yusuf Goolamabbas
Modified: 2007-04-18 12:53 EDT (History)
1 user (show)

See Also:
Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2004-09-30 11:40:52 EDT
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RHEL 7.3 requirements from Atomic Host:
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Description Yusuf Goolamabbas 2003-05-05 05:06:17 EDT
Description of problem:

The problem is best described in this thread to ext3-users


As Neil Brown says, that this is due to a kernel bug where data older than
bdflush stays in memory till journal is full, I believe this is fixed by akpm
via the introduction of jbd_refile_buffer in fs/jbd/transaction.c but so far no
errata has been released which incorporates this fix.

Version-Release number of selected component (if applicable):

Redhat Linux 7.3 running kernel 2.4.18-27 and activating the 3ware highmem-io
patch in the spec file

How reproducible:

Every time

Steps to Reproduce:

Actual results:

Have periodic stalls on the machine every few minutes when there is massive
writeout to this disk

Expected results:

Would see bdflush interval being honoured by kernel and not experience such
massive writeouts

Additional info:
Comment 1 Bugzilla owner 2004-09-30 11:40:52 EDT
Thanks for the bug report. However, Red Hat no longer maintains this version of
the product. Please upgrade to the latest version and open a new bug if the problem

The Fedora Legacy project (http://fedoralegacy.org/) maintains some older releases, 
and if you believe this bug is interesting to them, please report the problem in
the bug tracker at: http://bugzilla.fedora.us/

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