sbd resource fails to start if more than one device configured in /etc/sysconfig/sbd

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Environment

SUSE Linux Enterprise High Availability Extension 12 Service Pack 3

Situation

When a STONITH resource was configured using more than one SBD device the resource fails after starting. The following messages can be seen in /var/log/messages:

2017-12-18T13:48:47.023696+01:00 sles12cluster1 stonith: external_status: 'sbd status' failed with rc 1

2017-12-18T13:48:47.023914+01:00 sles12cluster1 stonith: external/sbd device not accessible.

2017-12-18T13:48:47.025249+01:00 sles12cluster1 stonith-ng[1626]: warning: fence_legacy[20407] stderr: [ You can specify up to 3 devices via the -d option. ]

2017-12-18T13:48:47.025439+01:00 sles12cluster1 stonith-ng[1626]: warning: fence_legacy[20407] stderr: [ sbd failed; please check the logs. ]

2017-12-18T13:48:47.025574+01:00 sles12cluster1 stonith-ng[1626]: warning: fence_legacy[20407] stderr: [ /usr/lib64/stonith/plugins/external/sbd: line 48: [: : integer expression expected ]

2017-12-18T13:48:47.025709+01:00 sles12cluster1 stonith-ng[1626]: warning: fence_legacy[20407] stderr: [ /usr/lib64/stonith/plugins/external/sbd: line 52: *12/10: syntax error: operand expected (error token is "*12/10") ]

2017-12-18T13:48:49.066845+01:00 sles12cluster1 stonith: external_status: 'sbd status' failed with rc 1

2017-12-18T13:48:49.067055+01:00 sles12cluster1 stonith: external/sbd device not accessible.

Resolution

Fixed as of sbd-1.3.1+20180507.e102d9e-4.5.2.

Cause

Parsing the list of SBD_DEVICE in /etc/sysconfig/sbd led to reading the variable twice.

Additional Information

Note: When configuring multiple SBD devices in the /etc/sysconfig/sbd configuration file, the list of devices need to be separated by semi-colon and surrounded by quotes.
Example:

SBD_DEVICE="/dev/disk/by-id/scsi-disk1; /dev/disk/by-id/scsi-disk2; /dev/disk/by-id/scsi-disk3"

Disclaimer

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