RHEL Engineering is moving the tracking of its product development work on RHEL 6 through RHEL 9 to Red Hat Jira (issues.redhat.com). If you're a Red Hat customer, please continue to file support cases via the Red Hat customer portal. If you're not, please head to the "RHEL project" in Red Hat Jira and file new tickets here. Individual Bugzilla bugs in the statuses "NEW", "ASSIGNED", and "POST" are being migrated throughout September 2023. Bugs of Red Hat partners with an assigned Engineering Partner Manager (EPM) are migrated in late September as per pre-agreed dates. Bugs against components "kernel", "kernel-rt", and "kpatch" are only migrated if still in "NEW" or "ASSIGNED". If you cannot log in to RH Jira, please consult article #7032570. That failing, please send an e-mail to the RH Jira admins at rh-issues@redhat.com to troubleshoot your issue as a user management inquiry. The email creates a ServiceNow ticket with Red Hat. Individual Bugzilla bugs that are migrated will be moved to status "CLOSED", resolution "MIGRATED", and set with "MigratedToJIRA" in "Keywords". The link to the successor Jira issue will be found under "Links", have a little "two-footprint" icon next to it, and direct you to the "RHEL project" in Red Hat Jira (issue links are of type "https://issues.redhat.com/browse/RHEL-XXXX", where "X" is a digit). This same link will be available in a blue banner at the top of the page informing you that that bug has been migrated.
Bug 738435 - "Failed to refresh" error when attempting exclusive snap deletion from cluster VG on non active node
Summary: "Failed to refresh" error when attempting exclusive snap deletion from cluste...
Keywords:
Status: CLOSED WONTFIX
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: lvm2
Version: 7.0
Hardware: x86_64
OS: Linux
low
medium
Target Milestone: pre-dev-freeze
: ---
Assignee: Zdenek Kabelac
QA Contact: cluster-qe@redhat.com
URL:
Whiteboard:
Depends On:
Blocks: 756082
TreeView+ depends on / blocked
 
Reported: 2011-09-14 19:05 UTC by Corey Marthaler
Modified: 2023-03-08 07:25 UTC (History)
8 users (show)

Fixed In Version:
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
Environment:
Last Closed: 2020-11-18 18:07:56 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Corey Marthaler 2011-09-14 19:05:13 UTC 
Description of problem:

# Exclusively activate a clustered VG and create a snapshot on one node, then attempt to remove the snapshot from another node.
[root@taft-03 ~]# cman_tool nodes
Node  Sts   Inc   Joined               Name
   1   M      8   2011-09-14 13:43:48  taft-01
   2   M     12   2011-09-14 13:43:48  taft-02
   3   M      8   2011-09-14 13:43:48  taft-03
   4   M     16   2011-09-14 13:43:48  taft-04
[root@taft-03 ~]# lvcreate -n origin -L 100M taft
  Logical volume "origin" created
[root@taft-03 ~]# vgchange -an
  0 logical volume(s) in volume group "taft" now active
[root@taft-03 ~]# lvs
  LV      VG        Attr   LSize   Origin Snap%  
  origin  taft      -wi--- 100.00m             
[root@taft-03 ~]# vgchange -aye taft
  1 logical volume(s) in volume group "taft" now active
[root@taft-03 ~]# lvs -a -o +devices
  LV      VG        Attr   LSize   Origin Snap% Devices         
  origin  taft      -wi-a- 100.00m              /dev/sdb1(0)    
[root@taft-03 ~]# lvcreate -s taft/origin -n snap1 -L 12M 
  Logical volume "snap1" created
[root@taft-03 ~]# lvcreate -s taft/origin -n snap2 -L 12M 
  Logical volume "snap2" created
[root@taft-03 ~]# lvs -a -o +devices
  LV      VG        Attr   LSize   Origin Snap%  Devices         
  origin  taft      owi-a- 100.00m               /dev/sdb1(0)    
  snap1   taft      swi-a-  12.00m origin   0.00 /dev/sdb1(25)   
  snap2   taft      swi-a-  12.00m origin   0.00 /dev/sdb1(28)   
[root@taft-03 ~]# pvscan
  PV /dev/sdb1   VG taft        lvm2 [135.66 GiB / 135.54 GiB free]
  PV /dev/sdc1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdd1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sde1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdf1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdg1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]
  PV /dev/sdh1   VG taft        lvm2 [135.66 GiB / 135.66 GiB free]


# Do the delete attempt of the snapshot from another node in the cluster where the VG isn't active.
[root@taft-04 ~]# lvs -a -o +devices
  LV      VG        Attr   LSize   Origin Snap%  Devices         
  origin  taft      owi--- 100.00m               /dev/sdb1(0)    
  snap1   taft      swi---  12.00m origin        /dev/sdb1(25)   
  snap2   taft      swi---  12.00m origin        /dev/sdb1(28)   
[root@taft-04 ~]# lvremove taft/snap2
Do you really want to remove active clustered logical volume snap2? [y/n]: y
  cluster request failed: Resource temporarily unavailable
  Failed to refresh origin without snapshot.
  Device '/dev/sdf1' has been left open.
  Device '/dev/sdb1' has been left open.
  Device '/dev/sdc1' has been left open.
  Device '/dev/sdg1' has been left open.
  Device '/dev/sdh1' has been left open.
  Device '/dev/sdb1' has been left open.
  Device '/dev/sdd1' has been left open.
  Device '/dev/sdg1' has been left open.
  Device '/dev/sde1' has been left open.
  Device '/dev/sdf1' has been left open.
  Device '/dev/sdg1' has been left open.
  Device '/dev/sde1' has been left open.
  Device '/dev/sdh1' has been left open.
  Device '/dev/sdd1' has been left open.
  Device '/dev/sdf1' has been left open.
  Device '/dev/sdh1' has been left open.
  Device '/dev/sdc1' has been left open.
  Device '/dev/sdb1' has been left open.
  Device '/dev/sdc1' has been left open.
  Device '/dev/sde1' has been left open.
  Device '/dev/sdg1' has been left open.
  Device '/dev/sdd1' has been left open.
  Device '/dev/sde1' has been left open.
  Device '/dev/sdf1' has been left open.
  Device '/dev/sdh1' has been left open.
  Device '/dev/sde1' has been left open.
  Device '/dev/sdd1' has been left open.
  Device '/dev/sdg1' has been left open.
  Device '/dev/sdc1' has been left open.
  Device '/dev/sdb1' has been left open.
  Device '/dev/sdh1' has been left open.
  Device '/dev/sdf1' has been left open.
  Device '/dev/sdb1' has been left open.
  Device '/dev/sdc1' has been left open.
  Device '/dev/sdd1' has been left open.
[root@taft-04 ~]# lvs -a -o +devices
  LV      VG        Attr   LSize   Origin Snap%  Devices         
  origin  taft      owi--- 100.00m               /dev/sdb1(0)    
  snap1   taft      swi---  12.00m origin        /dev/sdb1(25)   
  snap2   taft      swi---  12.00m origin        /dev/sdb1(28)   



Version-Release number of selected component (if applicable):
2.6.32-195.el6.x86_64

lvm2-2.02.87-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
lvm2-libs-2.02.87-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
lvm2-cluster-2.02.87-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
udev-147-2.38.el6    BUILT: Fri Sep  9 16:25:50 CDT 2011
device-mapper-1.02.66-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
device-mapper-libs-1.02.66-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
device-mapper-event-1.02.66-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
device-mapper-event-libs-1.02.66-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011
cmirror-2.02.87-2.1.el6    BUILT: Wed Sep 14 09:44:16 CDT 2011


How reproducible:
Every time
Comment 1 Milan Broz 2011-09-14 19:47:17 UTC 
One addition:
clvmd after restart read initial lock state from "lvs" command.

For virtual origin snapshot it loads wrong lock id (because virtual origin is internally represented by different LV).
This must be fixed as well to make it work reliably.
Comment 2 Alasdair Kergon 2012-01-04 21:34:12 UTC 
We should attempt to clean up the way it handles these sorts of situations.

(We probably can't support deleting a snapshot from a node different from the one where it's active, though.)
Comment 4 Alasdair Kergon 2012-03-13 17:59:15 UTC 
(We should perhaps consider this alongside the similar thin pool/volume activation questions.)

1.  Maybe it's time to change the way locking is handled with volumes activated implicitly.  Always hold locks for every active volume and have the code know how to acquire the extra locks?

2.  See whether this lvremove sequence can be made to work correctly in a cluster - or if not, detect and ban it.
Comment 12 Jonathan Earl Brassow 2017-09-29 20:41:22 UTC 
This low priority and unlikely bug should continue to be tracked, but will not be considered for fix in RHEL6.  Moving to RHEL7.  Likely an attempt to reproduce there should be done.
Note You need to log in before you can comment on or make changes to this bug.