'blk_update_request: critical nexus error dev dm-X, sector xyz' messages logged in RHEL

Solution Verified - Updated -

Issue

  • What is the cause of critical nexus errors?
  • What is a critical nexus error?
  • What is the difference between a critical nexus and a critical target error?
  • The following error messages are logged in /var/log/messages or dmesg:
kernel: sd 33:0:1:0: reservation conflict
kernel: sd 33:0:1:0: [sdc] FAILED Result: hostbyte=DID_OK driverbyte=DRIVER_OK
kernel: sd 33:0:1:0: [sdc] CDB: Read(10) 28 00 ba df ff f8 00 00 08 00
kernel: blk_update_request: critical nexus error, dev sdc, sector 3135242232
kernel: Buffer I/O error on dev sdc, logical block 391905279, async page read

Environment

  • Red Hat Enterprise Linux 7
  • Red Hat Enterprise Linux 8
  • Red Hat Enterprise Linux 9

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