[PVE-User] pvecm e 1 not working anymore

Thomas Lamprecht t.lamprecht at proxmox.com
Fri Mar 18 13:20:35 CET 2016



On 03/18/2016 12:36 PM, Jean-Laurent Ivars wrote:
> You can let go it’s ok, I revert the conf file from my other node, I
> restarted the corosync service from the web interface and the folder
> is back.
>
> As you’re saying* pvecm expected 1 *is working despite what pvecm
> status says because both the hosts are online, I just made test
> (temporary deactivate cluster interface on the other node)

If you did something like "ifdown eth1" forget it , that wont work with
corosync, it may actual cause problems.
And yes it will *not* set expected votes lower if the cluster is full up
and quorate!

A real test from my side shows that is working:

root at due:~# pvecm s
Quorum information
------------------
Date:             Fri Mar 18 13:15:42 2016
Quorum provider:  corosync_votequorum
Nodes:            3
Node ID:          0x00000002
Ring ID:          704
Quorate:          Yes

Votequorum information
----------------------
Expected votes:   3
Highest expected: 3
Total votes:      3
Quorum:           2 
Flags:            Quorate

Membership information
----------------------
    Nodeid      Votes Name
0x00000001          1 10.10.10.1
0x00000002          1 10.10.10.2 (local)
0x00000003          1 10.10.10.3

*-> pull network plug here*

root at due:~# pvecm s
Quorum information
------------------
Date:             Fri Mar 18 13:15:46 2016
Quorum provider:  corosync_votequorum
Nodes:            1
Node ID:          0x00000002
Ring ID:          708
Quorate:          No

Votequorum information
----------------------
Expected votes:   3
Highest expected: 3
Total votes:      1
Quorum:           2 Activity blocked
Flags:           

Membership information
----------------------
    Nodeid      Votes Name
0x00000002          1 10.10.10.2 (local)

root at due:~# pvecm e 1

root at due:~# pvecm s
Quorum information
------------------
Date:             Fri Mar 18 13:15:51 2016
Quorum provider:  corosync_votequorum
Nodes:            1
Node ID:          0x00000002
Ring ID:          708
Quorate:          Yes

Votequorum information
----------------------
Expected votes:   1
Highest expected: 1
Total votes:      1
Quorum:           1 
Flags:            Quorate

Membership information
----------------------
    Nodeid      Votes Name
0x00000002          1 10.10.10.2 (local)
root at due:~#


btw. using that do a achieve some false sense of HA in a two node
cluster should *never* be done in a production system, if something
fails or does not work as expected do not blame us, we warned you. If
you want HA use at least three nodes.

>
> and voilà :
>
> root at roubaix /etc/pve # pvecm status
> Quorum information
> ------------------
> Date:             Fri Mar 18 12:32:44 2016
> Quorum provider:  corosync_votequorum
> Nodes:            1
> Node ID:          0x00000001
> Ring ID:          1504
> Quorate:          No
>
> Votequorum information
> ----------------------
> Expected votes:   2
> Highest expected: 2
> Total votes:      1
> Quorum:           2 Activity blocked
> Flags:            
>
> Membership information
> ----------------------
>     Nodeid      Votes Name
> 0x00000001          1 10.10.10.2 (local)
> root at roubaix /etc/pve # pvecm expected 1
> root at roubaix /etc/pve # pvecm status
> Quorum information
> ------------------
> Date:             Fri Mar 18 12:33:00 2016
> Quorum provider:  corosync_votequorum
> Nodes:            1
> Node ID:          0x00000001
> Ring ID:          1504
> Quorate:          Yes
>
> Votequorum information
> ----------------------
> Expected votes:   1
> Highest expected: 1
> Total votes:      1
> Quorum:           1  
> Flags:            Quorate 
>
> Membership information
> ----------------------
>     Nodeid      Votes Name
> 0x00000001          1 10.10.10.2 (local)
> root at roubaix /etc/pve #  
>
> Thank you
>
> ------------------------------------------------------------------------
>
> 	
>
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