Bug 314781 - segfault in dmeventd when attempting to down convert a mirror with active I/O
Summary: segfault in dmeventd when attempting to down convert a mirror with active I/O
Keywords:
Status: CLOSED INSUFFICIENT_DATA
Alias: None
Product: Red Hat Enterprise Linux 4
Classification: Red Hat
Component: device-mapper
Version: 4.0
Hardware: All
OS: Linux
low
low
Target Milestone: ---
: ---
Assignee: Jonathan Earl Brassow
QA Contact: Cluster QE
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2007-10-01 21:57 UTC by Corey Marthaler
Modified: 2010-01-12 02:17 UTC (History)
3 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed: 2008-10-27 23:04:45 UTC
Target Upstream Version:
Embargoed:

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Description Corey Marthaler 2007-10-01 21:57:28 UTC 
Description of problem:
This may not be ther corrcet compontent to file this bug under but...

The mirror had 4 legs I believe and I was trying to down convert it to 3 legs.
lvconvert -m 2 /dev/helter_skelter/mirror

Oct  1 15:40:03 link-02 kernel: dmeventd[12010]: segfault at 000000000000001e
rip 00000031b8768f01 rsp 0000007fbffff620 error 4


I couldn't find a core to go with this, even though I have the ulimits set to
unlimited.

I'll try and reproduce this issue and gather more info.

Version-Release number of selected component (if applicable):
2.6.9-59.ELsmp
cmirror-kernel-2.6.9-37.1
device-mapper-1.02.21-1.el4
How reproducible:


Steps to Reproduce:
1.
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Actual results:


Expected results:


Additional info:
Comment 2 Petr Rockai 2008-05-05 15:38:41 UTC 
How much reproducible this is? Could I replicate that myself? Under what 
setup? (I haven't noticed other reports of dmeventd segfaulting, but I 
understand people could just not notice...). Also, dmeventd actions are fairly 
rare in practice, I understand.
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