Red Hat Bugzilla – Bug 496102
Backport patches for snapshot store damage
Last modified: 2010-06-23 11:23:37 EDT
We need to backport changes 7c9e6c17325fab380fbe9c9787680ff7d4a51abd (dm exception store: refactor zero_area) and 7acedc5b98a2fcff64f00c21110aae7d3ac2f7df (dm exception store: fix misordered writes) from Linux 2.6.28.
There is a small time window when snapshot data on disk are inconsistent because of misordered updates. If the computer crashed at this point, the user would see damaged snapshot store after a reboot.
This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux maintenance release. Product Management has requested
further review of this request by Red Hat Engineering, for potential
inclusion in a Red Hat Enterprise Linux Update release for currently deployed
products. This request is not yet committed for inclusion in an Update
Created attachment 340860 [details]
a backported patch from upstream
You can download this test kernel from http://people.redhat.com/dzickus/el5
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to provide a comment indicating that this fix has been verified.
What is status of QE team verifying this fix? Last update was over a month ago.
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 therefore solution and/or where to find the updated files,
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if the solution does not work for you.
*** Bug 481027 has been marked as a duplicate of this bug. ***