[ClusterLabs] Problem with DLM

Lentes, Bernd bernd.lentes at helmholtz-muenchen.de
Tue Jul 26 09:31:49 EDT 2022


Hi,

it seems my DLM went grazy:

/var/log/cluster/corosync.log:
Jul 20 00:21:56 [12204] ha-idg-1       lrmd:  warning: child_timeout_callback:  dlm_monitor_30000 process (PID 11816) timed out
Jul 20 00:21:56 [12204] ha-idg-1       lrmd:  warning: operation_finished:      dlm_monitor_30000:11816 - timed out after 20000ms
Jul 20 00:21:56 [32512] ha-idg-1       crmd:    error: process_lrm_event:       Result of monitor operation for dlm on ha-idg-1: Timed Out | call=1255 key=dlm_monitor_30000 timeout=20000ms
Jul 20 00:21:56 [32512] ha-idg-1       crmd:     info: exec_alert_list: Sending resource alert via smtp_alert to informatic.idg at helmholtz-muenchen.de

/var/log/messages:
2022-07-20T00:21:56.644677+02:00 ha-idg-1 Cluster: alert_smtp.sh
2022-07-20T00:22:16.076936+02:00 ha-idg-1 kernel: [2366794.757496] dlm: FD5D3C7CE9104CF5916A84DA0DBED302: leaving the lockspace group...
2022-07-20T00:22:16.364971+02:00 ha-idg-1 kernel: [2366795.045657] dlm: FD5D3C7CE9104CF5916A84DA0DBED302: group event done 0 0
2022-07-20T00:22:16.364982+02:00 ha-idg-1 kernel: [2366795.045777] dlm: FD5D3C7CE9104CF5916A84DA0DBED302: release_lockspace final free
2022-07-20T00:22:15.533571+02:00 ha-idg-1 Cluster: message repeated 22 times: [ alert_smtp.sh]
2022-07-20T00:22:17.164442+02:00 ha-idg-1 ocfs2_hb_ctl[19106]: ocfs2_hb_ctl /sbin/ocfs2_hb_ctl -K -u FD5D3C7CE9104CF5916A84DA0DBED302
2022-07-20T00:22:18.904936+02:00 ha-idg-1 kernel: [2366797.586278] ocfs2: Unmounting device (254,24) on (node 1084777482)
2022-07-20T00:22:19.116701+02:00 ha-idg-1 Cluster: alert_smtp.sh

What do these kernel messages mean ? Why stopped DLM ? I think this is the second time this happened. It is really a show stopper because node is fenced some minutes later:
00:34:40.709002 ha-idg: Fencing Operation Off of ha-idg-1 by ha-idg-2 for crmd.28253 at ha-idg-2: OK (ref=9710f0e2-a9a9-42c3-a294-ed0bd78bba1a)

What can i do ? Is there an alternative DLM ? 
System is SLES 12 SP5. Update to SLES 15 SP3 ?

Bernd



-- 
Bernd Lentes 
System Administrator 
Institute for Metabolism and Cell Death (MCD) 
Building 25 - office 122 
HelmholtzZentrum München 
bernd.lentes at helmholtz-muenchen.de 
phone: +49 89 3187 1241
       +49 89 3187 49123 
fax:   +49 89 3187 2294 
http://www.helmholtz-muenchen.de/mcd 

Public key: 
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