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Bug 1347697 - lvmetad should either die or disable itself in case of duplicated PVs - but never deadlock waiting on mutex
Summary: lvmetad should either die or disable itself in case of duplicated PVs - but n...
Keywords:
Status: CLOSED ERRATA
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2
Version: 7.2
Hardware: Unspecified
OS: Unspecified
unspecified
unspecified
Target Milestone: rc
: ---
Assignee: David Teigland
QA Contact: Zdenek Kabelac
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2016-06-17 12:22 UTC by RamaKasturi
Modified: 2021-09-03 12:39 UTC (History)
9 users (show)

Fixed In Version: lvm2-2.02.161-2.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2016-11-04 04:21:35 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)


Links
System ID Private Priority Status Summary Last Updated
Red Hat Product Errata RHBA-2016:1445 0 normal SHIPPED_LIVE lvm2 bug fix and enhancement update 2016-11-03 13:46:41 UTC

Description RamaKasturi 2016-06-17 12:22:07 UTC 
Description of problem:
lvmetad should either die or disable itself in case of duplicated PVs - but never deadlock waiting on mutex



Version-Release number of selected component (if applicable):
lvm2-2.02.130-5.el7_2.1.x86_64

How reproducible:
Always

Steps to Reproduce:
1. 
2.
3.

Actual results:


Expected results:


Additional info:
https://bugzilla.redhat.com/show_bug.cgi?id=1303940
Comment 2 David Teigland 2016-07-22 21:04:55 UTC 
This was done some time ago already.  lvmetad now disables itself when there are duplicate PVs.  Once the duplicates are resolved, a rescan (pvscan --cache) will reenable lvmetad.
Comment 4 Roman Bednář 2016-09-20 14:31:00 UTC 
Marking verified with latest rpms. 

LVM does not use lvmetad data from now on when duplicate PV is detected until solved.
Then it automatically restores normal operation.


# pvs -o +uuid
  WARNING: Not using lvmetad because duplicate PVs were found.
  WARNING: Use multipath or vgimportclone to resolve duplicate PVs?
  WARNING: After duplicates are resolved, run "pvscan --cache" to enable lvmetad.
  WARNING: PV mGsQGs-y0Xr-xAEB-aKzU-CLKw-fpHy-RN64tu on /dev/sdj was already found on /dev/sdi.
  WARNING: PV mGsQGs-y0Xr-xAEB-aKzU-CLKw-fpHy-RN64tu prefers device /dev/sdi because device was seen first.
  PV         VG            Fmt  Attr PSize   PFree   PV UUID                               
  /dev/sdi   cloneofvg     lvm2 a--  972.00m 972.00m mGsQGs-y0Xr-xAEB-aKzU-CLKw-fpHy-RN64tu
  /dev/vda2  rhel_virt-283 lvm2 a--    7.79g  40.00m RgLVtC-zhsS-aSpi-Qf8F-HcKk-LzhJ-ViCb8D

# systemctl is-active lvm2-lvmetad
active

3.10.0-505.el7.x86_64

lvm2-2.02.165-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
lvm2-libs-2.02.165-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
lvm2-cluster-2.02.165-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
device-mapper-1.02.134-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
device-mapper-libs-1.02.134-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
device-mapper-event-1.02.134-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
device-mapper-event-libs-1.02.134-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
device-mapper-persistent-data-0.6.3-1.el7    BUILT: Fri Jul 22 12:29:13 CEST 2016
cmirror-2.02.165-2.el7    BUILT: Wed Sep 14 16:01:43 CEST 2016
Comment 6 errata-xmlrpc 2016-11-04 04:21:35 UTC 
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory, and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://rhn.redhat.com/errata/RHBA-2016-1445.html
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