Why there are I/O errors in "/var/log/messages" for network block devices /dev/nbd* ?

Solution Verified - Updated -

Issue

  • Getting I/O errors in "/var/log/messages" for "nbd" devices

    Aug 15 13:15:04 server1 kernel: nbd125: Attempted send on closed socket
    Aug 15 13:15:04 server1 kernel: end_request: I/O error, dev nbd125, sector 0
    

Environment

  • Red Hat Enterprise Linux version 5

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