/var/log/messages contains lots of Test Unit Ready commands

This document (7022776) is provided subject to the disclaimer at the end of this document.

Environment

SUSE Linux Enterprise Server 12 Service Pack 2 (SLES 12 SP2)
SUSE Linux Enterprise Server 12 Service Pack 3 (SLES 12 SP3)

Situation

The system log (/var/log/messages) contains lots of messages similar to the following:

Aug  9 12:44:06 linux kernel: [2365688.544882] sd 1:0:0:5: [sdf] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK
Aug  9 12:44:06 linux kernel: [2365688.544901] sd 1:0:0:5: [sdf] tag#0 CDB: Test Unit Ready 00 00 00 00 00 00
Aug  9 12:44:06 linux kernel: [2365688.545247] sd 2:0:0:4: [sdm] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK
Aug  9 12:44:06 linux kernel: [2365688.545250] sd 2:0:0:4: [sdm] tag#0 CDB: Test Unit Ready 00 00 00 00 00 00
Aug  9 12:44:08 linux kernel: [2365690.545690] sd 1:0:0:6: [sdg] tag#0 FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK
Aug  9 12:44:08 linux kernel: [2365690.545709] sd 1:0:0:6: [sdg] tag#0 CDB: Test Unit Ready 00 00 00 00 00 00

Resolution

This issue has been addressed with kernel 4.4.120-92.70.1 for SLES 12 SP2 and 4.4.120-94.17.1 for SLES 12 SP3.

Cause

Test Unit Ready commands were incorrectly reported.

Additional Information

Kernel change log entry:

- scsi: do not print 'reservation conflict' for TEST UNIT READY
  (bsc#1027054).
- commit f106680

Disclaimer

This Support Knowledgebase provides a valuable tool for SUSE customers and parties interested in our products and solutions to acquire information, ideas and learn from one another. Materials are provided for informational, personal or non-commercial use within your organization and are presented "AS IS" WITHOUT WARRANTY OF ANY KIND.

  • Document ID:7022776
  • Creation Date: 26-Mar-2018
  • Modified Date:03-Mar-2020
    • SUSE Linux Enterprise Server

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