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On 2010-06-09T18:41:00+00:00 Clint wrote:

Created attachment 422647
A crude bug fix that would prevent the erroneous error message.

Description of problem:

pvmove relies on polldaemon.c:_wait_for_single_lv() to read the
percentage complete on the mirror that is used to do the pvmove.
However, the mirror goes away sometimes while this program is running,
presumably in between init_full_scan_done(0) and locking the volume
group. This would appear to be a race condition, so it only happens
sometimes.

When the problem occurs, a user gets something like this printed out:

  /dev/sde1: Moved: 99.6%
  ABORTING: Can't find mirror LV in homedirs for /dev/sde1

This is very confusing, as the user may think that the pvmove operation
failed.

Version-Release number of selected component (if applicable):

2.02.54, code appears similar in 2.02.67

How reproducible:

As this is a race condition, it does not always happen. However users
have reported it happening with enough frequency to cause alarm as the
error message

Steps to reproduce:

assuming /dev/sdb has two equal sized partitions of at least 10G

Setup:
pvcreate /dev/sdb1
pvcreate /dev/sdb2
vgcreate test /dev/sdb1 /dev/sdb2
lvcreate -L 9G -n t1 test /dev/sdb1

Then repeat these in an alternating manner:

pvmove -i1 /dev/sdb1
pvmove -i1 /dev/sdb2

It may take many iterations to reproduce the race, or it may never reproduce 
it, as other factors may be necessary to make it more likely (such as many more 
physical volumes).
  
Actual results:


Expected results:

I would expect that if the pvmove completes successfully, that pvmove
would show that fact rather than abort.

Additional info:

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/4

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On 2010-06-09T18:52:55+00:00 RHEL wrote:

This request was evaluated by Red Hat Product Management for inclusion in a Red
Hat Enterprise Linux major release.  Product Management has requested further
review of this request by Red Hat Engineering, for potential inclusion in a Red
Hat Enterprise Linux Major release.  This request is not yet committed for
inclusion.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/5

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On 2010-06-10T10:42:10+00:00 Bryn wrote:

Comment on attachment 422647
A crude bug fix that would prevent the erroneous error message.

Fix mime type on attachment.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/7

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On 2011-01-19T22:42:20+00:00 Milan wrote:

I sent this patch to fix the issue:
https://www.redhat.com/archives/lvm-devel/2011-January/msg00133.html

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/9

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On 2011-01-19T23:13:16+00:00 Milan wrote:

Fix in upstream lvm 2.02.82.

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/10

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On 2011-04-04T22:21:07+00:00 Corey wrote:

I didn't see any 'ABORT' messages in the pvmove regression test output.
Marking verified in the latest rpms.

2.6.32-128.el6.x86_64

lvm2-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
lvm2-libs-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
lvm2-cluster-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
udev-147-2.35.el6    BUILT: Wed Mar 30 07:32:05 CDT 2011
device-mapper-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-libs-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-event-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
device-mapper-event-libs-1.02.62-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011
cmirror-2.02.83-3.el6    BUILT: Fri Mar 18 09:31:10 CDT 2011

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/13

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On 2011-05-19T14:26:03+00:00 errata-xmlrpc wrote:

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,
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-2011-0772.html

Reply at:
https://bugs.launchpad.net/ubuntu/+source/lvm2/+bug/591475/comments/15


** Changed in: lvm2
       Status: Unknown => Fix Released

** Changed in: lvm2
   Importance: Unknown => Low

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Title:
  Spurious abort message after successful pvmove

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