Note: This bug is displayed in read-only format because the product is no longer active in Red Hat Bugzilla.

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Description of problem:
After running "redhat-upgrade-tool --iso /var/isos/rhel-server-7.4-x86_64-dvd.iso" and rebooting, upgrade fails because system can not locate the packages.

Using a RHEL 7.3 iso succeeds.

Version-Release number of selected component (if applicable):


How reproducible:
Always

Steps to Reproduce:
1. Copy RHEL 7.4 ISO to the RHEL 6 instance
2. Run "preupg"
3. Run "redhat-upgrade-tool --iso /var/isos/rhel-server-7.4-x86_64-dvd.iso"
4. reboot

Actual results:
Upgrade fails.

Expected results:
Upgrade succeeds.

Additional info:
Upgrade is successful if RHEL 7.3 ISO is used.

# rpm -qa | grep upgrade | sort
preupgrade-assistant-2.4.4-1.el6.noarch
preupgrade-assistant-el6toel7-0.6.71-2.el6.noarch
preupgrade-assistant-el6toel7-data-0.20170712-1.el6.noarch
preupgrade-assistant-ui-2.4.4-1.el6.noarch
redhat-upgrade-tool-0.7.49-1.el6.noarch

Move to the redhat-upgrade-tool component as this is not about the preupgrade-assistant component. I havn't tried that yet but, is it really because r-u-t cannot locate packages or is it about compressed kernel modules? See bug 1486962.

Yes, it's caused by the failure to load the kernel modules which are compressed since RHEL 7.4, as pstodulk suggests. Because the modules are not loaded, the ISO is not possible to mount during the dracut phase of the upgrade by Red Hat Upgrade Tool. I'm working on a fix. I'm closing this bug as duplicate to the bug 1486962, and assigning the Customer Portal case to that bug.

*** This bug has been marked as a duplicate of bug 1486962 ***