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Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by Kevin

Kevin — Wed, 20 Mar 2013 07:49:47 +0000

Just did a yum update on an older CentOS 5.7 machine running Integration Services.

Thankfully I did a Hyper-V snapshot before updating as neither of the kernels that existed after the upgrade can get past the Kernel panic message.

What is the best strategy for approaching this situation? The VM is snapshotted (not a word I know) every week and hasn’t been rebooted in 300 something days (it’s a PBX that has no external connections) so I know it will keep on running with this old kernel but at some point I would like to do the upgrade.

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by devin

devin — Thu, 31 Jan 2013 18:26:00 +0000

Andy, what I’m hoping is that something in the new RPM will be able to handle multiple different kernels, but I don’t know. Like I said, I haven’t had this issue yet, nor do I have a test environment to try it out. So my suggestion is to start testing with the simplest solution of removing and reinstalling the rpm in the old kernel. I’m not sure if it will work, and if it doesn’t, then try and see how to install IC for the new Kernel.

Just FYI, it would probably be a good idea to take a snapshot of your VM before you do this type of work.

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by Andy Schmidt

Andy Schmidt — Thu, 31 Jan 2013 18:04:50 +0000

Devin – thanks for your patience with a Linux newbie!

This all sounds good – but I’ve looked through the RPM commands/documentation/tutorials I could find – and can’t figure out how I can “install the IC for the new Kernel” while I’m booted in the old Kernel?

Is there an RPM command option that lets me specify which Kernel I want to install the IC package into?

The original posting in this thread was accomplishing that using an old version of the Integration Components when they still included source code and the doing a MAKE to build a new kernel. All recent versions of the IC are in RPM without source?

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by devin

devin — Thu, 31 Jan 2013 17:10:09 +0000

In the process above, you boot to the original/working Kernel, and then install the IC for the new Kernel. Assuming your original Kernel still works, you should be able to remove and reinstall the rpm from there. I’m not sure if reinstalling the rpm will work, but it would be a good place to start.

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by Andy Schmidt

Andy Schmidt — Thu, 31 Jan 2013 16:58:01 +0000

Hi Devin – thanks. The problem only occurs AFTER a Kernel update when you attempt to boot the NEW Kernel. The problem apparently is, that the NEW Kernel needs drivers (disk/IDE?) from the IC before it can boot to the file system.

Since it doesn’t boot, how would one uninstall the RPM there?
Also, since the likely problem is that the NEW Kernel doesn’t HAVE the IC components in the first place – it seems as if there really is nothing to “un”-install.

The problem is that the original/working Kernel required that the Integration Components be supplied DURIGN the initial Linux install. But whenever a new Kernel update is supplied, it of course lacks those IDE drivers.

I guess what we’re looking for is some way to boot the new Kernel but somehow have it “load” the missing IC drivers as part of the boot process?

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by devin

devin — Thu, 31 Jan 2013 16:33:42 +0000

I haven’t had a kernel panic using the rpm package yet, however, the instructions most likely no longer apply to it. The above basically just does a reinstall for your latest kernel. If you are getting a kernel panic with the rpm version, I would start by removing and reinstalling the rpm.

Comment on Kernel Panic after Yum Update – CentOS with Hyper-V Linux Integration Components by Andy Schmidt

Andy Schmidt — Tue, 29 Jan 2013 18:49:46 +0000

I suppose since version 3.2 (now 3.4) of Integration Components, this work-around is not longer possible? They IC are now in RPM format – there is no more source. Thus there is no ability to “make” and the instructions no longer apply?

Comment on CentOS 5.5 Installing Hyper-V Linux Integration Components v2.1 by NetApp Data ONTAP Simulator für Hyper-V | servertalk

NetApp Data ONTAP Simulator für Hyper-V | servertalk — Fri, 19 Oct 2012 14:33:19 +0000

[...] ist schnell abgeschlossen. Eine entsprechende Anleitung wie CentOS auf Hyper-V installiert wird hat Devin oder auch Yusuf auf seinem Blog veröffentlicht. Tests mit Ubuntu waren ebenfalls erfolgreich, [...]

Comment on No Remote Desktop License Servers Available by Etch

Etch — Tue, 25 Sep 2012 11:13:12 +0000

thats what i was looking for.

thanks

Comment on Run Rackspace Cloud Server locally on Hyper-V by Kris Klepacki

Kris Klepacki — Thu, 28 Jun 2012 18:07:03 +0000

I have problem restoring Red Hat 6.1 image from Rackspace.
I did not get any error msgs. Rebooted the server fine, checked few directories and they are not the same.What i’m doing wrong? Please help