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Mon, 21 Sep 2020 01:54:59 +0200 (CEST)
Date: Mon, 21 Sep 2020 01:54:59 +0200 (CEST)
From: Alexandre DERUMIER <aderumier@odiso.com>
To: Thomas Lamprecht <t.lamprecht@proxmox.com>
Cc: Proxmox VE development discussion <pve-devel@lists.proxmox.com>
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Thread-Topic: corosync bug: cluster break after 1 node clean shutdown
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Subject: Re: [pve-devel] corosync bug: cluster break after 1 node clean
shutdown
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Hi,
I have done a new test, this time with "systemctl stop corosync", wait 15s,=
"systemctl start corosync", wait 15s.
I was able to reproduce it at corosync stop on node1, 1second later /etc/pv=
e was locked on all other nodes.
I have started corosync 10min later on node1, and /etc/pve has become write=
able again on all nodes
node1: corosync stop: 01:26:50
node2 : /etc/pve locked : 01:26:51
http://odisoweb1.odiso.net/corosync-stop.log
pmxcfs : bt full all threads:
https://gist.github.com/aderumier/c45af4ee73b80330367e416af858bc65
pmxcfs: coredump :http://odisoweb1.odiso.net/core.17995.gz
node1:corosync start: 01:35:36
http://odisoweb1.odiso.net/corosync-start.log
BTW, I have been contacted in pm on the forum by a user following this mail=
ing thread,
and he had exactly the same problem with a 7 nodes cluster recently.
(shutting down 1 node, /etc/pve was locked until the node was restarted)
----- Mail original -----
De: "Thomas Lamprecht" <t.lamprecht@proxmox.com>
=C3=80: "Proxmox VE development discussion" <pve-devel@lists.proxmox.com>, =
"aderumier" <aderumier@odiso.com>
Envoy=C3=A9: Jeudi 17 Septembre 2020 13:35:55
Objet: Re: [pve-devel] corosync bug: cluster break after 1 node clean shutd=
own
On 9/17/20 12:02 PM, Alexandre DERUMIER wrote:=20
> if needed, here my test script to reproduce it=20
thanks, I'm now using this specific one, had a similar (but all nodes write=
s)=20
running here since ~ two hours without luck yet, lets see how this behaves.=
=20
>=20
> node1 (restart corosync until node2 don't send the timestamp anymore)=20
> -----=20
>=20
> #!/bin/bash=20
>=20
> for i in `seq 10000`; do=20
> now=3D$(date +"%T")=20
> echo "restart corosync : $now"=20
> systemctl restart corosync=20
> for j in {1..59}; do=20
> last=3D$(cat /tmp/timestamp)=20
> curr=3D`date '+%s'`=20
> diff=3D$(($curr - $last))=20
> if [ $diff -gt 20 ]; then=20
> echo "too old"=20
> exit 0=20
> fi=20
> sleep 1=20
> done=20
> done=20
>=20
>=20
>=20
> node2 (write to /etc/pve/test each second, then send the last timestamp t=
o node1)=20
> -----=20
> #!/bin/bash=20
> for i in {1..10000};=20
> do=20
> now=3D$(date +"%T")=20
> echo "Current time : $now"=20
> curr=3D`date '+%s'`=20
> ssh root@node1 "echo $curr > /tmp/timestamp"=20
> echo "test" > /etc/pve/test=20
> sleep 1=20
> done=20
>=20