Bug 714483 - Fedora Live usb
Summary: Fedora Live usb
Alias: None
Product: Fedora
Classification: Fedora
Component: mdadm
Version: 15
Hardware: x86_64
OS: Linux
Target Milestone: ---
Assignee: Doug Ledford
QA Contact: Fedora Extras Quality Assurance
Depends On:
TreeView+ depends on / blocked
Reported: 2011-06-19 15:06 UTC by Richard Marchesi
Modified: 2011-07-15 00:12 UTC (History)
4 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2011-07-15 00:12:20 UTC
Type: ---

Attachments (Terms of Use)

Description Richard Marchesi 2011-06-19 15:06:41 UTC
Description of problem:

boot from usb live fedora 15 breaks my current system which is ubuntu 10.04, which is 3 disk raid0
it becomes for some reason

which makes the system unbootable

very strange as i didnt install anything, only booted the live fedora system.  

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

How reproducible:

Steps to Reproduce:
1. boot with live usb into the live system
2. reboot pc as per normal
Actual results:
stops workin at boot with his error
error: non such disk.
grub rescue>

Expected results:
system should boot as per normal

Additional info:

Comment 1 Doug Ledford 2011-07-15 00:12:20 UTC
There is no coordination between Fedora mdadm usage and Ubuntu mdadm usage.  In particular, there are different superblock versions that are likely in use and different methods of numbering arrays.  Fedora is switching away from numbering arrays entirely and going to name based array recognition.  It's possible that something in our mdadm usage caused the superminor number in your existing arrays to get updated, resulting in this change in names, but this sort of cross distro interaction is not likely something I can properly debug (especially as I don't even know what the live USB image does to bring the arrays up).  If anyone can fix this, it's likely going to have to be the live image people, not me.

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