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OL6 to OL7 Migration Reimage Step Boots into the Dracut Emergency Shell (Doc ID 2761414.1)

Last updated on MARCH 18, 2021

Applies to:

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

Symptoms

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.

Following the documentation to upgrade the BDA from OL6 to OL7, 10.8.3 Oracle Linux 6 to Oracle Linux 7 Migration Steps, the step to reimage the node, boots into the "Dracut Emergency Shell".

1. Messaging shows:

dracut-initqueue: Warning: Could not boot
dracut-initqueue: Warning: /dev/root does not exist
Starting Dracut Emergency Shell...
Warning: /dev/root does not exist
...
Entering emergency mode. Exit the shell to continue.
Type "journalctl" to view system logs.

2. The journalctl output shows a problem with /dev/sdm

sd 1:0:0:0: [sdm] Write Protect is off
...
sd 1:0:0:0: [sdm] No Caching mode page found
...
sd 1:0:0:0: [sdm] Attached SCSI removable disk

3. Booting into the OS manually, shows that the OS remains at OL6 and no partitions have been created. "df -h" reports: 

 

Cause

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In this Document
Symptoms
Cause
Solution
References


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