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  1. RHEL
  2. RHEL-75344

Migration with ssh transport sometimes fails early with Input/output error

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    • rhel-sst-virt-tools
    • ssg_virtualization
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    • Red Hat Enterprise Linux
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      What were you trying to do that didn't work?

      Get the same error message on s390x as on x86_64

      What is the impact of this issue to you?

      Low - this apparently is an invalid scenario. However, having a different error message makes me unsure if this behavior is expected. Not sure if to ignore it.

      Please provide the package NVR for which the bug is seen:

      libvirt-10.10.0-4.el9.s390x

      How reproducible is this bug?:

      100%

      Steps to reproduce

      1. Set up passwordless ssh between source and destination host.
      2. Enable IPV6 and IPV4 on both hosts.
      3. Run live migration with correct IP address values but where listen-address is ipv6 and the others are ipv4
        --desturi qemu+ssh://10.73.212.22/system --migrateuri tcp://10.73.212.22 --listen-address [2620:52:0:49d4:f2d4:e2ff:fee8:5a40]

      Expected results

      Migration can't be executed. Command returns with exit error 1 and same error message as on x86_64:

      error: unable to connect to server at '10.73.212.22:49152': Connection refused

      Actual results

      Migration still can't be executed but error message is confusing, especially considering that passwordless ssh is set up:

      error: End of file while reading data: Warning: Permanently added '10.0.160.194' (ED25519) to the list of known hosts.: Input/output error

      Additional information

      The migration succeeds when uris are also ipv6.

              jdenemar@redhat.com Jiri Denemark
              smitterl@redhat.com Sebastian Mitterle
              Jiri Denemark Jiri Denemark
              Liping Cheng Liping Cheng
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                Created:
                Updated: