"The specified vg_access_mode doesn't match the lock_type on VG metadata!" observed after creating `LVM-activate` cluster resources using `vg_access_mode=lvmlockd`

Environment

• Red Hat Enterprise Linux 8, 9
• High Availability Pacemaker Cluster

Issue

• When configuring LVM-Activate with the options activation_mode=shared and vg_access_mode=lvmlockd we see:

    * cluster_lvm_start_0 on rhel8-node-1.clust 'invalid parameter' (2): call=61, status='complete', exitreason='The specified vg_access_mode doesn't match the lock_type on VG metadata!', last-rc-change='2021-01-26 11:41:58 -05:00', queued=0ms, exec=132ms
  

Resolution

The lock-type for the shared LVM volume group needs to be to dlm in order for the volume group to by managed by lvmlockd.

1. On one node:

    # vgchange --lock-type dlm <vg name>
   

2. On all nodes:

    # vgchange --lock-start <vg name>
   

3. On one node:

    # pcs resource cleanup 
   

Additional Information and Related issues:

• Note: If this issue is observed on an LVM-Activate resource with the option vg_access_mode=system_id then, refer to the following article:

  • "The specified vg_access_mode doesn't match the lock_type on VG metadata!" observed after creating LVM-activate cluster resources using vg_access_mode=system_id

• Note: If you have recently performed an update from RHEL 7 to RHEL 8, then this issue may be observed as a result of left over locking still attached to the VG's metadata from previous clvmd locking implementation. If you observe this error following such a major upgrade, please use the solution in below official documentation, and this includes an additional step to remove the older no longer supported clvmd locking:

  • Chapter 7. GFS2 file systems in a cluster | 7.3. Migrating a GFS2 file system from RHEL7 to RHEL8

Root Cause

The LVM volume group managed by pacemaker was not created with the --shared option and did not have the lock-type set to dlm.

Diagnostic Steps

Verify that the volume group is shared and has lock_type set to dlm.

# vgs -o+lock_type,systemid  --foreign --shared

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