From: Thomas Lamprecht <t.lamprecht@proxmox.com>
To: Proxmox VE development discussion <pve-devel@lists.proxmox.com>,
Alexandre DERUMIER <aderumier@odiso.com>
Subject: Re: [pve-devel] corosync bug: cluster break after 1 node clean shutdown
Date: Thu, 10 Sep 2020 10:21:48 +0200 [thread overview]
Message-ID: <3ee5d9cf-19be-1067-3931-1c54f1c6043a@proxmox.com> (raw)
In-Reply-To: <761694744.496919.1599713892772.JavaMail.zimbra@odiso.com>
On 10.09.20 06:58, Alexandre DERUMIER wrote:
> Thanks Thomas for the investigations.
>
> I'm still trying to reproduce...
> I think I have some special case here, because the user of the forum with 30 nodes had corosync cluster split. (Note that I had this bug 6 months ago,when shuting down a node too, and the only way was stop full stop corosync on all nodes, and start corosync again on all nodes).
>
>
> But this time, corosync logs looks fine. (every node, correctly see node2 down, and see remaning nodes)
>
> surviving node7, was the only node with HA, and LRM didn't have enable watchog (I don't have found any log like "pve-ha-lrm: watchdog active" for the last 6months on this nodes
>
>
> So, the timing was:
>
> 10:39:05 : "halt" command is send to node2
> 10:39:16 : node2 is leaving corosync / halt -> every node is seeing it and correctly do a new membership with 13 remaining nodes
>
> ...don't see any special logs (corosync,pmxcfs,pve-ha-crm,pve-ha-lrm) after the node2 leaving.
> But they are still activity on the server, pve-firewall is still logging, vms are running fine
>
>
> between 10:40:25 - 10:40:34 : watchdog reset nodes, but not node7.
>
> -> so between 70s-80s after the node2 was done, so I think that watchdog-mux was still running fine until that.
> (That's sound like lrm was stuck, and client_watchdog_timeout have expired in watchdog-mux)
as said, if the other nodes where not using HA, the watchdog-mux had no
client which could expire.
>
> 10:40:41 node7, loose quorum (as all others nodes have reset),
> 10:40:50: node7 crm/lrm finally log.
>
> Sep 3 10:40:50 m6kvm7 pve-ha-crm[16196]: got unexpected error - error during cfs-locked 'domain-ha' operation: no quorum!
> Sep 3 10:40:51 m6kvm7 pve-ha-lrm[16140]: loop take too long (87 seconds)
> Sep 3 10:40:51 m6kvm7 pve-ha-crm[16196]: loop take too long (92 seconds)
above lines also indicate very high load.
Do you have some monitoring which shows the CPU/IO load before/during this event?
> Sep 3 10:40:51 m6kvm7 pve-ha-crm[16196]: lost lock 'ha_manager_lock - cfs lock update failed - Permission denied
> Sep 3 10:40:51 m6kvm7 pve-ha-lrm[16140]: lost lock 'ha_agent_m6kvm7_lock - cfs lock update failed - Permission denied
>
>
>
> So, I really think that something have stucked lrm/crm loop, and watchdog was not resetted because of that.
>
next prev parent reply other threads:[~2020-09-10 8:22 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-03 14:11 Alexandre DERUMIER
2020-09-04 12:29 ` Alexandre DERUMIER
2020-09-04 15:42 ` Dietmar Maurer
2020-09-05 13:32 ` Alexandre DERUMIER
2020-09-05 15:23 ` dietmar
2020-09-05 17:30 ` Alexandre DERUMIER
2020-09-06 4:21 ` dietmar
2020-09-06 5:36 ` Alexandre DERUMIER
2020-09-06 6:33 ` Alexandre DERUMIER
2020-09-06 8:43 ` Alexandre DERUMIER
2020-09-06 12:14 ` dietmar
2020-09-06 12:19 ` dietmar
2020-09-07 7:00 ` Thomas Lamprecht
2020-09-07 7:19 ` Alexandre DERUMIER
2020-09-07 8:18 ` dietmar
2020-09-07 9:32 ` Alexandre DERUMIER
2020-09-07 13:23 ` Alexandre DERUMIER
2020-09-08 4:41 ` dietmar
2020-09-08 7:11 ` Alexandre DERUMIER
2020-09-09 20:05 ` Thomas Lamprecht
2020-09-10 4:58 ` Alexandre DERUMIER
2020-09-10 8:21 ` Thomas Lamprecht [this message]
2020-09-10 11:34 ` Alexandre DERUMIER
2020-09-10 18:21 ` Thomas Lamprecht
2020-09-14 4:54 ` Alexandre DERUMIER
2020-09-14 7:14 ` Dietmar Maurer
2020-09-14 8:27 ` Alexandre DERUMIER
2020-09-14 8:51 ` Thomas Lamprecht
2020-09-14 15:45 ` Alexandre DERUMIER
2020-09-15 5:45 ` dietmar
2020-09-15 6:27 ` Alexandre DERUMIER
2020-09-15 7:13 ` dietmar
2020-09-15 8:42 ` Alexandre DERUMIER
2020-09-15 9:35 ` Alexandre DERUMIER
2020-09-15 9:46 ` Thomas Lamprecht
2020-09-15 10:15 ` Alexandre DERUMIER
2020-09-15 11:04 ` Alexandre DERUMIER
2020-09-15 12:49 ` Alexandre DERUMIER
2020-09-15 13:00 ` Thomas Lamprecht
2020-09-15 14:09 ` Alexandre DERUMIER
2020-09-15 14:19 ` Alexandre DERUMIER
2020-09-15 14:32 ` Thomas Lamprecht
2020-09-15 14:57 ` Alexandre DERUMIER
2020-09-15 15:58 ` Alexandre DERUMIER
2020-09-16 7:34 ` Alexandre DERUMIER
2020-09-16 7:58 ` Alexandre DERUMIER
2020-09-16 8:30 ` Alexandre DERUMIER
2020-09-16 8:53 ` Alexandre DERUMIER
[not found] ` <1894376736.864562.1600253445817.JavaMail.zimbra@odiso.com>
2020-09-16 13:15 ` Alexandre DERUMIER
2020-09-16 14:45 ` Thomas Lamprecht
2020-09-16 15:17 ` Alexandre DERUMIER
2020-09-17 9:21 ` Fabian Grünbichler
2020-09-17 9:59 ` Alexandre DERUMIER
2020-09-17 10:02 ` Alexandre DERUMIER
2020-09-17 11:35 ` Thomas Lamprecht
2020-09-20 23:54 ` Alexandre DERUMIER
2020-09-22 5:43 ` Alexandre DERUMIER
2020-09-24 14:02 ` Fabian Grünbichler
2020-09-24 14:29 ` Alexandre DERUMIER
2020-09-24 18:07 ` Alexandre DERUMIER
2020-09-25 6:44 ` Alexandre DERUMIER
2020-09-25 7:15 ` Alexandre DERUMIER
2020-09-25 9:19 ` Fabian Grünbichler
2020-09-25 9:46 ` Alexandre DERUMIER
2020-09-25 12:51 ` Fabian Grünbichler
2020-09-25 16:29 ` Alexandre DERUMIER
2020-09-28 9:17 ` Fabian Grünbichler
2020-09-28 9:35 ` Alexandre DERUMIER
2020-09-28 15:59 ` Alexandre DERUMIER
2020-09-29 5:30 ` Alexandre DERUMIER
2020-09-29 8:51 ` Fabian Grünbichler
2020-09-29 9:37 ` Alexandre DERUMIER
2020-09-29 10:52 ` Alexandre DERUMIER
2020-09-29 11:43 ` Alexandre DERUMIER
2020-09-29 11:50 ` Alexandre DERUMIER
2020-09-29 13:28 ` Fabian Grünbichler
2020-09-29 13:52 ` Alexandre DERUMIER
2020-09-30 6:09 ` Alexandre DERUMIER
2020-09-30 6:26 ` Thomas Lamprecht
2020-09-15 7:58 ` Thomas Lamprecht
2020-12-29 14:21 ` Josef Johansson
2020-09-04 15:46 ` Alexandre DERUMIER
2020-09-30 15:50 ` Thomas Lamprecht
2020-10-15 9:16 ` Eneko Lacunza
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