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Bug 235039 - conditionalized flush causes clear region requests to remain unflushed
Summary: conditionalized flush causes clear region requests to remain unflushed
Alias: None
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel
Version: 5.0
Hardware: All
OS: Linux
Target Milestone: ---
: ---
Assignee: Jonathan Earl Brassow
QA Contact: Martin Jenner
Depends On:
TreeView+ depends on / blocked
Reported: 2007-04-03 15:00 UTC by Jonathan Earl Brassow
Modified: 2007-11-30 22:07 UTC (History)
1 user (show)

Fixed In Version: RHBA-2007-0959
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2007-11-07 19:45:55 UTC
Target Upstream Version:

Attachments (Terms of Use)

System ID Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2007:0959 normal SHIPPED_LIVE Updated kernel packages for Red Hat Enterprise Linux 5 Update 1 2007-11-08 00:47:37 UTC

Description Jonathan Earl Brassow 2007-04-03 15:00:51 UTC
If you suspend/dtr a mirror, clear region requests are not flushed to disk. 
This means that the next time a cluster mirror is started, those regions will be
incorrectly assumed to be not in-sync.

The culprit is in rh_update_states:
        if (!list_empty(&recovered))

The conditional should be removed.  Note that this does not cause extra disk
activity, since the (disk) log checks for lc->touched.

Comment 1 Jonathan Earl Brassow 2007-04-05 16:08:20 UTC
patch posted to dm-devel

Comment 2 Jonathan Earl Brassow 2007-05-08 18:23:26 UTC
assigned -> post

Comment 3 RHEL Product and Program Management 2007-05-08 18:42:29 UTC
This request was evaluated by Red Hat Kernel Team for inclusion in a Red
Hat Enterprise Linux maintenance release, and has moved to bugzilla 
status POST.

Comment 4 Don Zickus 2007-06-16 00:33:38 UTC
in 2.6.18-27.el5
You can download this test kernel from

Comment 7 errata-xmlrpc 2007-11-07 19:45:55 UTC
An advisory 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.

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