After reading http://utcc.utoronto.ca/~cks/space/blog/linux/IETUnsupportedMessage, I think this warning is harmless.
The ICSI initiator sends an ATA PASS THROUGH command to the server, the server does not know what to do with and that's it. According to https://groups.google.com/forum/#!msg/open- iscsi/PbKHnapEqCQ/5icFrw1fZQsJ it might be that smartd is sending this command. -- You received this bug notification because you are a member of Ubuntu Server Team, which is subscribed to iscsitarget in Ubuntu. https://bugs.launchpad.net/bugs/584668 Title: iscsi_trgt: scsi_cmnd_start(1035) Unsupported 85 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/iscsitarget/+bug/584668/+subscriptions -- Ubuntu-server-bugs mailing list Ubuntu-server-bugs@lists.ubuntu.com Modify settings or unsubscribe at: https://lists.ubuntu.com/mailman/listinfo/ubuntu-server-bugs