we lost one server of 6 nodes cluster. after reboot the node:
root@cluster24:~# pvecm status
Cluster information
-------------------
Name: cluster
Config Version: 29
Transport: knet
Secure auth: on
Quorum information
------------------
Date: Tue Nov 23 01:00:48 2021
Quorum provider: corosync_votequorum
Nodes: 1
Node ID: 0x00000002
Ring ID: 1.26317
Quorate: No
Votequorum information
----------------------
Expected votes: 6
Highest expected: 6
Total votes: 1
Quorum: 4 Activity blocked
Flags:
Membership information
----------------------
Nodeid Votes Name
0x00000002 1 192.168.1.24 (local)
Nov 23 01:00:48 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:48 cluster24 pve-firewall[2868]: firewall update time (10.040 seconds)
Nov 23 01:00:49 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:49 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 10
Nov 23 01:00:50 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:50 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:00:51 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' .
......
Nov 23 01:02:30 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:02:31 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 30
Nov 23 01:02:32 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 40
Nov 23 01:02:33 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 50
Nov 23 01:02:34 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 60
Nov 23 01:02:35 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 70
Nov 23 01:02:36 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 80
Nov 23 01:02:37 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 90
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 100
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retried 100 times
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] crit: cpg_send_message failed: 6
Nov 23 01:02:39 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 10
Nov 23 01:02:40 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:02:41 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 30
################################################################################################
FROM one of the other clusternodes:
root@cluster26:~# pvecm status
Cluster information
-------------------
Name: cluster
Config Version: 29
Transport: knet
Secure auth: on
Quorum information
------------------
Date: Tue Nov 23 02:03:38 2021
Quorum provider: corosync_votequorum
Nodes: 5
Node ID: 0x00000001
Ring ID: 1.26316
Quorate: Yes
Votequorum information
----------------------
Expected votes: 6
Highest expected: 6
Total votes: 5
Quorum: 4
Flags: Quorate
Membership information
----------------------
Nodeid Votes Name
0x00000001 1 192.168.1.26 (local)
0x00000003 1 192.168.1.20
0x00000007 1 192.168.1.22
0x00000008 1 192.168.1.23
0x0000000a 1 192.168.1.25
Nov 23 01:57:47 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retried 100 times
Nov 23 01:57:47 cluster26 pmxcfs[10532]: [status] crit: cpg_send_message failed: 6
Nov 23 01:57:47 cluster26 pve-ha-lrm[2048]: unable to write lrm status file - unable to open file '/etc/pve/nodes/cluster26/lrm_s
Nov 23 01:57:47 cluster26 pvestatd[1987]: status update time (230.376 seconds)
Nov 23 01:57:47 cluster26 pve-firewall[1988]: firewall update time (10.011 seconds)
Nov 23 01:57:48 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 10
Nov 23 01:57:48 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 10
Nov 23 01:57:49 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 20
Nov 23 01:57:49 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 20
Nov 23 01:57:50 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 30
Nov 23 01:57:50 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 30
Nov 23 01:57:51 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 40
Nov 23 01:57:51 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 40
Nov 23 01:57:52 cluster26 pve-ha-lrm[2048]: loop take too long (40 seconds)
Nov 23 01:57:52 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 50
Nov 23 01:57:52 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 50
Nov 23 01:57:53 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 60
Nov 23 01:57:53 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 60
Nov 23 01:57:54 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 70
Nov 23 01:57:54 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 70
Nov 23 01:57:55 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 8
root@cluster24:~# pvecm status
Cluster information
-------------------
Name: cluster
Config Version: 29
Transport: knet
Secure auth: on
Quorum information
------------------
Date: Tue Nov 23 01:00:48 2021
Quorum provider: corosync_votequorum
Nodes: 1
Node ID: 0x00000002
Ring ID: 1.26317
Quorate: No
Votequorum information
----------------------
Expected votes: 6
Highest expected: 6
Total votes: 1
Quorum: 4 Activity blocked
Flags:
Membership information
----------------------
Nodeid Votes Name
0x00000002 1 192.168.1.24 (local)
Nov 23 01:00:48 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:48 cluster24 pve-firewall[2868]: firewall update time (10.040 seconds)
Nov 23 01:00:49 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:49 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 10
Nov 23 01:00:50 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' ...
Nov 23 01:00:50 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:00:51 cluster24 pvesr[10680]: trying to acquire cfs lock 'file-replication_cfg' .
......
Nov 23 01:02:30 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:02:31 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 30
Nov 23 01:02:32 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 40
Nov 23 01:02:33 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 50
Nov 23 01:02:34 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 60
Nov 23 01:02:35 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 70
Nov 23 01:02:36 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 80
Nov 23 01:02:37 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 90
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 100
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retried 100 times
Nov 23 01:02:38 cluster24 pmxcfs[2576]: [status] crit: cpg_send_message failed: 6
Nov 23 01:02:39 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 10
Nov 23 01:02:40 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 20
Nov 23 01:02:41 cluster24 pmxcfs[2576]: [status] notice: cpg_send_message retry 30
################################################################################################
FROM one of the other clusternodes:
root@cluster26:~# pvecm status
Cluster information
-------------------
Name: cluster
Config Version: 29
Transport: knet
Secure auth: on
Quorum information
------------------
Date: Tue Nov 23 02:03:38 2021
Quorum provider: corosync_votequorum
Nodes: 5
Node ID: 0x00000001
Ring ID: 1.26316
Quorate: Yes
Votequorum information
----------------------
Expected votes: 6
Highest expected: 6
Total votes: 5
Quorum: 4
Flags: Quorate
Membership information
----------------------
Nodeid Votes Name
0x00000001 1 192.168.1.26 (local)
0x00000003 1 192.168.1.20
0x00000007 1 192.168.1.22
0x00000008 1 192.168.1.23
0x0000000a 1 192.168.1.25
Nov 23 01:57:47 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retried 100 times
Nov 23 01:57:47 cluster26 pmxcfs[10532]: [status] crit: cpg_send_message failed: 6
Nov 23 01:57:47 cluster26 pve-ha-lrm[2048]: unable to write lrm status file - unable to open file '/etc/pve/nodes/cluster26/lrm_s
Nov 23 01:57:47 cluster26 pvestatd[1987]: status update time (230.376 seconds)
Nov 23 01:57:47 cluster26 pve-firewall[1988]: firewall update time (10.011 seconds)
Nov 23 01:57:48 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 10
Nov 23 01:57:48 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 10
Nov 23 01:57:49 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 20
Nov 23 01:57:49 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 20
Nov 23 01:57:50 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 30
Nov 23 01:57:50 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 30
Nov 23 01:57:51 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 40
Nov 23 01:57:51 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 40
Nov 23 01:57:52 cluster26 pve-ha-lrm[2048]: loop take too long (40 seconds)
Nov 23 01:57:52 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 50
Nov 23 01:57:52 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 50
Nov 23 01:57:53 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 60
Nov 23 01:57:53 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 60
Nov 23 01:57:54 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 70
Nov 23 01:57:54 cluster26 pmxcfs[10532]: [status] notice: cpg_send_message retry 70
Nov 23 01:57:55 cluster26 pmxcfs[10532]: [dcdb] notice: cpg_send_message retry 8