[root@virt-007 ~]# vgcreate shared --shared /dev/sd[abcd]
  Enabling sanlock global lock
  Logical volume "lvmlock" created.
  Volume group "shared" successfully created
  VG shared start failed: invalid sanlock host_id, set in lvmlocal.conf
  Failed to start locking
[root@virt-007 ~]# echo $?
0

[root@virt-007 ~]# systemctl start sanlock
[root@virt-007 ~]# systemctl status sanlock
● sanlock.service - Shared Storage Lease Manager
     Loaded: loaded (/usr/lib/systemd/system/sanlock.service; disabled; preset: disabled)
     Active: active (running) since Mon 2024-06-03 22:13:10 CEST; 6s ago
    Process: 318218 ExecStart=/usr/sbin/sanlock daemon (code=exited, status=0/SUCCESS)
   Main PID: 318221 (sanlock)
      Tasks: 6 (limit: 25015)
     Memory: 14.9M
        CPU: 28ms
     CGroup: /system.slice/sanlock.service
             ├─318221 /usr/sbin/sanlock daemon
             └─318222 /usr/sbin/sanlock daemon
 
Jun 03 22:13:10 virt-007.cluster-qe.lab.eng.brq.redhat.com systemd[1]: Starting Shared Storage Lease Manager...
Jun 03 22:13:10 virt-007.cluster-qe.lab.eng.brq.redhat.com systemd[1]: Started Shared Storage Lease Manager.
Jun 03 22:13:10 virt-007.cluster-qe.lab.eng.brq.redhat.com sanlock[318221]: sanlock daemon started 3.9.1 host 10b32729-7345-4af9-b7c5-046230cb7f37.virt-007.cl (virt-007.cluster-qe.lab.eng.brq.redhat.com)
 
 
[root@virt-007 ~]# systemctl start lvmlockd
[root@virt-007 ~]# systemctl status lvmlockd
● lvmlockd.service - LVM lock daemon
     Loaded: loaded (/usr/lib/systemd/system/lvmlockd.service; disabled; preset: disabled)
     Active: active (running) since Mon 2024-06-03 22:13:32 CEST; 4s ago
       Docs: man:lvmlockd(8)
   Main PID: 318245 (lvmlockd)
      Tasks: 3 (limit: 25015)
     Memory: 2.7M
        CPU: 38ms
     CGroup: /system.slice/lvmlockd.service
             └─318245 /usr/sbin/lvmlockd --foreground
 
Jun 03 22:13:32 virt-007.cluster-qe.lab.eng.brq.redhat.com systemd[1]: Starting LVM lock daemon...
Jun 03 22:13:32 virt-007.cluster-qe.lab.eng.brq.redhat.com lvmlockd[318245]: [D] creating /run/lvm/lvmlockd.socket
Jun 03 22:13:32 virt-007.cluster-qe.lab.eng.brq.redhat.com lvmlockd[318245]: 1717445612 lvmlockd started
Jun 03 22:13:32 virt-007.cluster-qe.lab.eng.brq.redhat.com systemd[1]: Started LVM lock daemon.
 
[root@virt-007 ~]# vgcreate shared --shared /dev/sd[abcd]
  Enabling sanlock global lock
  Logical volume "lvmlock" created.
  Volume group "shared" successfully created
  VG shared start failed: invalid sanlock host_id, set in lvmlocal.conf
  Failed to start locking
[root@virt-007 ~]# echo $?
0
 
[root@virt-007 ~]# dmsetup ls
rhel_virt--007-root     (253:0)
rhel_virt--007-swap     (253:1)
shared-lvmlock  (253:2)
 
[root@virt-007 ~]# vgremove -f shared
  Global lock failed: check that global lockspace is started
 
[root@virt-007 ~]# vgchange --lock-start shared
  Skipping global lock: lockspace not found or started
  VG shared start failed: invalid sanlock host_id, set in lvmlocal.conf
 
[root@virt-007 ~]# vgremove --nolocking -f shared
  Cannot free VG sanlock, lvmlockd is not in use.
 
[root@virt-007 ~]# vgremove  --config 'global{use_lvmlockd=0}' shared
  Cannot access VG shared with lock type sanlock that requires lvmlockd.
 
[root@virt-007 ~]# pvscan
  Skipping global lock: lockspace not found or started
  Reading VG shared without a lock.
  PV /dev/sda   VG shared   lvm2 [<55.00 GiB / <54.75 GiB free]
  PV /dev/sdb   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  PV /dev/sdc   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  PV /dev/sdd   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  Total: 4 [219.98 GiB] / in use: 4 [219.98 GiB] / in no VG: 0 [0   ]
[root@virt-007 ~]# vgs
  Skipping global lock: lockspace not found or started
  Reading VG shared without a lock.
  VG     #PV #LV #SN Attr   VSize   VFree  
  shared   4   0   0 wz--ns 219.98g 219.73g
 
[root@virt-007 ~]# grep host_id /etc/lvm/lvmlocal.conf
        # Configuration option local/host_id.
        # The lvmlockd sanlock host_id.
        # host_id = 0
 
[root@virt-007 ~]# grep host_id /etc/lvm/lvmlocal.conf
        # Configuration option local/host_id.
        # The lvmlockd sanlock host_id.
        host_id = 1990
[root@virt-007 ~]# pvscan
  Skipping global lock: lockspace not found or started
  Reading VG shared without a lock.
  PV /dev/sda   VG shared   lvm2 [<55.00 GiB / <54.75 GiB free]
  PV /dev/sdb   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  PV /dev/sdc   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  PV /dev/sdd   VG shared   lvm2 [<55.00 GiB / <55.00 GiB free]
  Total: 4 [219.98 GiB] / in use: 4 [219.98 GiB] / in no VG: 0 [0   ]
 
[root@virt-007 ~]# vgchange --lock-start shared
  Skipping global lock: lockspace not found or started
  VG shared starting sanlock lockspace
  Starting locking.  Waiting for sanlock may take 20 sec to 3 min...
 
[root@virt-007 ~]# vgremove shared
  Volume group "shared" successfully removed