Upgrading to Red Hat Enterprise Linux7 with iso media on nfs server failed with missing packages

Solution Unverified - Updated -

Issue

  • I used redhat-upgrade-tool to upgrade from Red Hat Enterprise Linux 6.6 into Red Hat Enterprise Linux 7.
  • My iso file is on a nfs server, so I mounted it on /mnt and run "redhat-upgrade-tool --iso /mnt/rhel7.iso"
  • Reboot and started the upgrade, but it failed with the following many errors.
upgrade[1540]: Warning: failed to open file /sysroot/var/lib/system-upgrade/media/Packages/`package-name`
upgrade[1540]: Warning: couldn't add media/Packages/`package-name` to the transaction

Environment

Red Hat Enterprise Linux 6
redhat-upgrade-tool-0.7.32-1.el6
preupgrade-assistant-2.0.1-3.el6

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