Red Hat Bugzilla – Bug 869465
trouble booting /dev/root does not exist
Last modified: 2012-10-25 15:24:58 EDT
Created attachment 632498 [details]
vmm created virt image
Description of problem:
Virtual image won't boot on F17
Warning: /dev/root does not exist
looking in the dracut logs it doesn't appear to be finding a disk
There is no /dev/disk or /dev/sdX or any of the other likely candidates.
cdrom being found as sr1 seems to be the last thing in dmesg as if it can't find the qemu provided disk. Other virtual images seem to have no problem finding their disk.
The journalctl logs are practically unreadable. Most of the info is truncated toward the right side of the screen.
Version-Release number of selected component (if applicable):
Fedora 17 host:
[root@snog images]# sha256sum RHEL-7.0-20121012.1-Server-x86_64-dvd1.iso
Steps to Reproduce:
1. basically take defaults creating a new virt image using Virtual Machine Manager
using a local iso image.
only change was to not pre-allocate image
<see attached xml file>
doesn't boot falls to rdshell
RHEL-7.0-20120711.2-Server-x86_64-dvd1.iso has no problem booting properly on this machine.
I did not try any further bisecting as the other images are not readily available.
This doesn't seem to be the same as bz#829682 but that is the closest match that I was able to find in bz.
summary of the above:
1) the problem is confirmed to be reproducible on F15
2) it appears that the problem is somewhere between the 7-11 compose and the 10-12 compose something changed that makes it so that rhel7's can't find the initramfs on the CD image.
Since many if not all of the RHEL7 images between A2 and the 10-12 compose have been deleted, notting suggested that I try F18's alpha.
This worked as expected and so the problem appears to be with the recent RHEL7 compose and how it interacts with F15-17's sr driver.
Travis Gummels tested the rhel7 installer on rhel6 and it appears to work.
I think that he used:
actually gummels says that he's using:
<gummels> $ rpm -q qemu-img kernel libvirt
<gummels> I'm back afew from that on the kernel
OK this works in the 10/22 compose of RHEL7 this problem apparently solved.