Bug 1029978 - PXE boot kernel and initrd fail with "Warning: /dev/root does not exist" on ProLiant BL460c G6
PXE boot kernel and initrd fail with "Warning: /dev/root does not exist" on P...
Product: Fedora
Classification: Fedora
Component: anaconda-images (Show other bugs)
x86_64 Linux
unspecified Severity high
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Assigned To: Anaconda Maintenance Team
Depends On:
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Reported: 2013-11-13 11:05 EST by Mark Lamourine
Modified: 2013-11-14 15:24 EST (History)
0 users

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Fixed In Version:
Doc Type: Bug Fix
Doc Text:
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Clone Of:
Last Closed: 2013-11-14 15:24:04 EST
Type: Bug
Regression: ---
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oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
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Attachments (Terms of Use)
output of /run/initramfs/rdsosreport.txt as indicated by dracut messages. (47.26 KB, text/plain)
2013-11-13 11:05 EST, Mark Lamourine
no flags Details

  None (edit)
Description Mark Lamourine 2013-11-13 11:05:00 EST
Created attachment 823517 [details]
output of /run/initramfs/rdsosreport.txt as indicated by dracut messages.

Description of problem:

PXE boot of Fedora 20 installation images fails with final message "Warning: /dev/root does not exist"

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

Fedora 20

How reproducible:

PXE boot HP blade server using vmlinuz and initrd.img from Fedora 20 Beta DVD (x86_64)

Steps to Reproduce:
1. Set PXE settings in Cobbler to boot the blade using the Fedora 20 beta components.

2. Set blade to boot from NIC using PXE

Actual results:

dracut-initqueue[814]: http://bugzilla.redhat.com
dracut-initqueue[814]: exiting.
dracut-initqueue[814]: Warning: Could not boot.
dracut-initqueue[814]: Warning: /dev/root does not exist
         Starting Dracut Emergency Shell...
Warning: /dev/root does not exist

Generating "/run/initramfs/rdsosreport.txt"

Expected results:

Proceed to anaconda kickstart installation of Fedora 20 on the blade server.

Additional info:

This is identical behavior to the Fedora 18 and 19  PXE install images.

The OS can be successfully installed using either the netinstall CDROM or full DVD mounted through the virtual media redirect interface.  It does not appear to be an issue with the linux kernel or with Anaconda per se, but with the specific kernel included for PXE boot and the associated initrd.
Comment 1 Mark Lamourine 2013-11-14 15:24:04 EST
In all three cases (F18, 19, 20) all that was needed was to provide the location of the LiveCD/sqaushfs.img as a kernel argument:


The last directory must be the root of an unpacked install CD or DVD containing a .treeinfo file.

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