Can't open watchdog device: /dev/watchdog: Device or resource busy
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STONITH is using external/sbd
Searching through the /var/log/messages file the following is seen:
Mar 15 12:00:56 node1 sbd: : ERROR: Cannot open watchdog device: /dev/watchdog: Device or resource busy
Because the sbd STONITH agent requires the use of the watchdog device, having another service holding that device open/busy is interfering with sbd from doing its job in the HA environment.
The sbd agent was configured correctly (/etc/sysconfig/sbd was correct, as was the configuration on the actual device).
Searching further in the messages file, the following is found:
Mar 15 10:46:10 node1 hpasrd: Starting with poll 1 and timeout 600.
Mar 15 10:46:10 node1 hpasrd: Setting the watchdog timer.
Mar 15 10:46:10 node1 hpasrd: Using watchdog HP iLO2 HW Watchdog Timer.
The hpasrd daemon is using the watchdog device.
A quick search on this shows that hpasrd is the Hewlett Packard Automatic Server Recovery Daemon.
node1:~ # chkconfig --list | grep hp
hp-asrd 0:off 1:off 2:on 3:on 4:on 5:on 6:off
hp-health 0:off 1:off 2:on 3:on 4:on 5:on 6:off
hp-snmp-agents 0:off 1:off 2:on 3:on 4:on 5:on 6:off
hpsmhd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
hpvca 0:off 1:off 2:off 3:on 4:on 5:on 6:off
openhpid 0:off 1:off 2:off 3:off 4:off 5:off 6:off
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- Document ID:7008216
- Creation Date: 28-Mar-2011
- Modified Date:03-Mar-2020
- SUSE Linux Enterprise Server
- SUSE Linux Enterprise Real Time Extension
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