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Bug 236271 - dm-mirror: Writes to mirror after log failure return EIO
Summary: dm-mirror: Writes to mirror after log failure return EIO
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: 2007-04-12 19:39 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 19:46:43 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 2007-04-12 19:39:39 UTC
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 20:59:02 UTC
pm-ack for 5.1.  Cleans up error processing of mirrors.

Comment 2 Jay Turner 2007-05-03 19:25:17 UTC
QE ack for RHEL5.1.

Comment 3 Jonathan Earl Brassow 2007-05-08 18:15:16 UTC
assigned -> post

Comment 4 Don Zickus 2007-06-27 15:51:36 UTC
in 2.6.18-32.el5
You can download this test kernel from

Comment 7 errata-xmlrpc 2007-11-07 19:46:43 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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