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Old 02-17-2015, 04:17 AM   #1
redhatprat
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Unable to install RHEL7 KVM onto RHEL7 desktop


Morning,

I have installed RHEL7.0 onto a PC with VT technology enabled, Base package: Server with GUI, and added on the 3 Virtualization packages.
All running fine as expected. Im only using this for study purposes, it remains off any network.

I now want to install a RHEL7.0 KVM onto it. I must of tried 20 times now and everytime it fails during the install and falls into Dracut emergency shell, errors-

vda: add path (uevent)
vda: spurious uevent, path already in pathvec
vda: failed to get path uid
uevent: trigger error
.
Warning: could not boot
Warning: /dev/root does not exist
Starting Dracut Emergency Shell...

the journalctl log it produces shows up just 1 error of interest-
Failed to access perfctr msr (MSR c1 is 0)

I have tried this on 2 different PCs and 1 laptop which all have VT technology enabled, and ive successfully performed this process on all 3 of them with RHEL6.1-4

I've been googling the errors but it appears noone else has this problem.

I've followed the Red Hat KVM official KVM install procedures to the letter and also tried a few ways ive been successul with RHEL6 with no luck.

Beginning to lose faith with RHEL7 already !


Anyone else having these issues?


Thanks, Chris
 
Old 02-17-2015, 10:30 AM   #2
TB0ne
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Quote:
Originally Posted by redhatprat View Post
Morning,
I have installed RHEL7.0 onto a PC with VT technology enabled, Base package: Server with GUI, and added on the 3 Virtualization packages.
All running fine as expected. Im only using this for study purposes, it remains off any network. I now want to install a RHEL7.0 KVM onto it. I must of tried 20 times now and everytime it fails during the install and falls into Dracut emergency shell, errors-

the journalctl log it produces shows up just 1 error of interest- Failed to access perfctr msr (MSR c1 is 0)

I have tried this on 2 different PCs and 1 laptop which all have VT technology enabled, and ive successfully performed this process on all 3 of them with RHEL6.1-4 I've been googling the errors but it appears noone else has this problem.
...except, perhaps Red Hat???
https://bugzilla.redhat.com/show_bug.cgi?id=924149

...where it was reported as a known bug and patched in 7.0. If you're paying for RHEL, you have access to that patch, so installing it will make things work. If you are NOT PAYING FOR RHEL, you WILL NOT get that patch. Simple.
Quote:
I've followed the Red Hat KVM official KVM install procedures to the letter and also tried a few ways ive been successul with RHEL6 with no luck.
Beginning to lose faith with RHEL7 already !
If you're paying for RHEL, then contact Red Hat support and tell them you're having problems...either they can help you through it, or at the very least, get the problem logged in and they'll start working on it.

If you're NOT paying for RHEL, stop where you are....load CentOS instead. The latest version is 7.0, and was patched in January..it is nearly IDENTICAL to RHEL, but free. The patches and updates will be available for it.
 
Old 02-17-2015, 10:57 AM   #3
redhatprat
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Thanks for your reply. Reading that bug report it doesnt look like the same issue and it also say
s the resolution IS RHEL7.0, which is what im using.

I did have a look at a few bug reports previous to this post, not much up there of relevance TBH

Ive been using RHEL6 for 3 years and now looking at 7. CentOS is an option, but I wont be using it. I'll get this working eventually. The physical host is working fine as expected, study study study...

Cheers, Chris
 
Old 02-17-2015, 11:10 AM   #4
TB0ne
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Quote:
Originally Posted by redhatprat View Post
Thanks for your reply. Reading that bug report it doesnt look like the same issue
Really?? The same "Failed to access perfctr" message, using the same software, trying to do the same thing...but it's different???
Quote:
and it also say s the resolution IS RHEL7.0, which is what im using.
...the PATCH was released for RHEL 7.0. Which you WILL NOT RECEIVE unless you are a PAID SUBSCRIBER to the Red Hat network. Are you???
Quote:
I did have a look at a few bug reports previous to this post, not much up there of relevance TBH

Ive been using RHEL6 for 3 years and now looking at 7. CentOS is an option, but I wont be using it. I'll get this working eventually. The physical host is working fine as expected, study study study...
Study all you want...unless you pay for Red Hat, you won't get the patch you need to get this working, period. Load CentOS 7 (which, AGAIN, is nearly IDENTICAL), and it'll work.
 
Old 02-17-2015, 11:31 AM   #5
redhatprat
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my company are so i will get the patch through them. after all im studying on their behalf.

and theres no need to throw your toys out the pram over it yawn
 
Old 02-17-2015, 11:35 AM   #6
TB0ne
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Quote:
Originally Posted by redhatprat View Post
my company are so i will get the patch through them. after all im studying on their behalf.
Great...but again, this makes very little sense. CentOS 7 is nearly IDENTICAL...the ONLY differences are removal of RHEL branding and logos. If you learn one, you learn the other. And being able to install via yum (since you will have valid repositories), makes things much easier.
Quote:
and theres no need to throw your toys out the pram over it yawn
Sorry, no idea what you're talking about, so if you're trying to be sarcastic or insulting, it didn't work. You asked for help, and received it, and now you want to be snotty about it???

Good luck.
 
Old 02-17-2015, 01:50 PM   #7
redhatprat
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Thanks for your advise on the bugfix. I'll download and patch it and let you know how I get on..

Rgds, Chris
 
Old 02-17-2015, 03:23 PM   #8
John VV
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there is NO need to download anything
just use yum
Code:
su -
yum update
that will install it
That is if you have a valid support contract
 
Old 02-17-2015, 04:02 PM   #9
redhatprat
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Hi John

yes that would be the obvious thing to do, but this desktop is not on any network, it is purely a study box.
My company have a full Red Hat support contract, I will see if they will allow me to download the patch.

Rgds,
 
Old 02-17-2015, 04:35 PM   #10
John VV
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then install CentOS 7.0
cent or ScientificLinux are the FREE!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
the FREE rebuilds of the RHEL code base

it makes NO differance that this is a "study box"
YOU HAVE TO REGISTER IT AN BUY THE REQUIRED SOPPORT LICENSE!!!!!!!!!!!!
there are NO "if's and's or but's"
you have to buy the license !!!


or
install one of the FREE rebuilds
CentOS 7.0 -- IS PART OF REDHAT NOW!!!!!!!!!!
ScientificLinux7.0 ( firmilab/cern support this)
 
Old 02-18-2015, 04:44 AM   #11
redhatprat
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Maybe CentOS is the way forward after discovering this-

I've just checked the qemu-kvm version on my RHEL7 desktop, and its already above the required version.

bugfix: qemu-kvm-1.5.0-1.el7
mine: qemu-kvm-1.5.3.60.el7

Clearly the patch isnt the fix..

Last edited by redhatprat; 02-18-2015 at 04:47 AM.
 
  


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