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Confirming the State of the OL6 OS After Rebooting into that OS Post the BDA OL6 to OL7 Migration Reboot Step Being Stuck in the Dracut Emergency Shell (Doc ID 2761414.1)

Last updated on AUGUST 09, 2021

Applies to:

Big Data Appliance Integrated Software - Version 4.12.0 and later
Linux x86-64

Goal

NOTE: In the examples that follow, user details, cluster names, hostnames, directory paths, filenames, etc. represent a fictitious sample (and are used to provide an illustrative example only). Any similarity to actual persons, or entities, living or dead, is purely coincidental and not intended in any manner.

To confirm the OL6 kernel is in a correct configuration to resume the OL6 to OL7 migration that was previously stuck in the Dracut Emergency shell after the reboot step in the documentation "10.8.3 Oracle Linux 6 to Oracle Linux 7 Migration Steps", failed to successfully reboot/reimage the server.

Solution

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In this Document
Goal
Solution
 Introduction
 Confirm the output from blkid. 
 Confirm the content of the HDFS/Data partition for the two OS disks
 Find the HDFS/Data partitions for the two OS disks
 Check the content of HDFS/Data partition on the two OS disks to confirm the content is correct.
 Confirm the output from lsblk
 Confirm  no errors in bdareimagenode-prepare-usb.out
 Confirm the content of grub.conf and syslinux.cfg
 Mount the USB boot partition
 Check the USB boot folder
 Check grub.conf
 Check syslinux.cfg
 Confirm the content of the USB root partition
References


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