Bug 636380

Summary:	Boot Failure from Live CD Desktop (F14B RC3) Can't mount root filesystem
Product:	[Fedora] Fedora	Reporter:	John Dulaney <jdulaney>
Component:	LiveCD	Assignee:	Matthias Clasen <mclasen>
Status:	CLOSED WONTFIX	QA Contact:
Severity:	high	Docs Contact:
Priority:	low
Version:	14	CC:	bruno, bwalker, dcantrell, jeff.raber, stephent98
Target Milestone:	---
Target Release:	---
Hardware:	i686
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-08-16 19:13:47 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description John Dulaney 2010-09-22 02:59:32 UTC

Description of problem:
Boot hangs with the following displayed on screen:

mount: unknown filesystem type 'DM_snapshot_cow'

Can't mount root filesystem

Boot has failed, sleeping forever.



I thought I recalled seeing this bug already, but I was not able to find it.



Version-Release number of selected component (if applicable):
RC3

How reproducible:
Every Time

Steps to Reproduce:
Boot from Desktop Live CD (F14B RC3)
At menu, choose Basic Video (nouveau seems to have reverted to being buggy again for me)
Add NOAPIC to the kernel options
Hit Enter
  
Additional info:
On this box, the NOAPIC is necessary.  Also, Nouveau worked on Alpha, but has regressed for RC3.  I am not sure where the regression occurred as I spent some time without internet access.  Therefore, I chose Basic Video Driver.  I have been unsuccessful at discovering the cause of this bug.

Comment 1 Steve Tyler 2010-09-22 15:33:09 UTC

FWIW, the same error messages are reported here:
Bug 534075 - Fedora 12 RC4 Live USB image won't boot, unknown filesystem type 'DM_snapshot_cow'

I have successfully booted the F14-Beta-RC3 Live CD on two systems (i686 and x86_64).
[stephent@walnut F14-Beta-RC3]$ sha256sum Fedora-14-Beta-i686-Live.iso
0b4b499774f3293a367165ccba76f65b168514fdbef9a11160b038aedb096ec8  Fedora-14-Beta-i686-Live.iso

Comment 2 Jeff Raber 2010-09-22 22:01:02 UTC

Can you reproduce this error with the same disc on different hardware?

Comment 3 John Dulaney 2010-09-22 22:28:36 UTC

It did boot on another system.

By the way, this is 32 bit

Comment 4 Fedora End Of Life 2012-08-16 19:13:50 UTC

This message is a notice that Fedora 14 is now at end of life. Fedora 
has stopped maintaining and issuing updates for Fedora 14. It is 
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