Bug 236271 - dm-mirror: Writes to mirror after log failure return EIO
dm-mirror: Writes to mirror after log failure return EIO
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 5
Classification: Red Hat
Component: kernel (Show other bugs)
5.0
All Linux
medium Severity medium
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Assigned To: Jonathan Earl Brassow
Martin Jenner
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Depends On:
Blocks:
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Reported: 2007-04-12 15:39 EDT by Jonathan Earl Brassow
Modified: 2007-11-30 17:07 EST (History)
1 user (show)

See Also:
Fixed In Version: RHBA-2007-0959
Doc Type: Bug Fix
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Last Closed: 2007-11-07 14:46:43 EST
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RHEL 7.3 requirements from Atomic Host:
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Description Jonathan Earl Brassow 2007-04-12 15:39:39 EDT
if the log device fails in device-mapper mirroring, writes will return EIO. 
This is due to the fact that the log must have a valid representation of the
state of a mirror before the write occurs.

It is now possible to requeue I/Os to device-mapper core when a log device dies.
 This means that we can hold the writes until the mirror has been reconfigured -
obviating the need to return EIOs.
Comment 1 Rob Kenna 2007-04-16 16:59:02 EDT
pm-ack for 5.1.  Cleans up error processing of mirrors.
Comment 2 Jay Turner 2007-05-03 15:25:17 EDT
QE ack for RHEL5.1.
Comment 3 Jonathan Earl Brassow 2007-05-08 14:15:16 EDT
assigned -> post
Comment 4 Don Zickus 2007-06-27 11:51:36 EDT
in 2.6.18-32.el5
You can download this test kernel from http://people.redhat.com/dzickus/el5
Comment 7 errata-xmlrpc 2007-11-07 14:46:43 EST
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.

http://rhn.redhat.com/errata/RHBA-2007-0959.html

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