Bug 1022018 - multipathd not updating wwid on lun replacement
Summary: multipathd not updating wwid on lun replacement
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 6
Classification: Red Hat
Component: device-mapper-multipath
Version: 6.3
Hardware: x86_64
OS: Linux
high
high
Target Milestone: rc
: ---
Assignee: Ben Marzinski
QA Contact: yanfu,wang
URL:
Whiteboard:
Depends On:
Blocks: 1056239
TreeView+ depends on / blocked
 
Reported: 2013-10-22 13:44 UTC by Jon Magrini
Modified: 2018-12-05 16:29 UTC (History)
11 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2014-03-17 19:01:31 UTC
Target Upstream Version:


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Comment 3 RHEL Program Management 2013-10-27 08:36:24 UTC
This request was not resolved in time for the current release.
Red Hat invites you to ask your support representative to
propose this request, if still desired, for consideration in
the next release of Red Hat Enterprise Linux.

Comment 4 Ben Marzinski 2014-03-17 19:01:31 UTC
Multipath doesn't handle this, and won't in RHEL6, at least.   There's too many corner cases where things could go horribly wrong. That being said, while I don't that you should do this, you could see if running

# service mulitpathd reload

gets you the correct results.  That deals with all the paths at once.

However, multipath is designed around it's devices always having the same wwid, and breaking that assumption is not something you should do.  You must remove the multipath device before changing the wwid of the path devices, for multipath to work correctly.


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