Re: Contents of CentOS-virt digest...
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Bob Vargas
Bob Vargas
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Today's Topics:
1. new install of Xen 4.6 hangs on Loading initial ramdisk
(Craig Thompson)
----------------------------------------------------------------------
Message: 1
Date: Fri, 27 Nov 2015 18:18:05 -0500
From: Craig Thompson <president@xxxxxxxxxxxxxxxxxx>
To: centos-virt@xxxxxxxxxx
Subject: new install of Xen 4.6 hangs on Loading initial
ramdisk
Message-ID: <0229360F-F45E-4C83-9CB8-4FE9BB79B306@xxxxxxxxxxxxxxxxxx>
Content-Type: text/plain; charset="windows-1252"
First post to this list. I would appreciate some help on this issue.
As background, I installed CentOS 7 on a Dell server, and then ran the following commands:
yum update http://buildlogs.centos.org/centos/7/virt/x86_64/xen/centos-release-xen-7-11.el7.x86_64.rpm
yum --enablerepo=centos-virt-xen-testing update
yum --enablerepo=centos-virt-xen-testing install xen
Doing that, I was able to successfully install Xen, create a virtual machine with its own HVM setup, logical volume, etc. and boot it just fine.
I then tried to do the same on an IBM x3550 server I?m trying to install with CentOS 7. The CentOS 7 install went just fine. I can boot into the standard kernel and have a working machine. But after running the commands above to install the Xen hypervisor, the machine hangs on boot for a few moments after displaying the lines below and then reboots in a loop over and over and over:
Loading Xen 4.6.0-2.el7 ?
Loading Linux 3.18.21-16.el7.x86_64 ?
Loading initial ramdisk ?
It never gets beyond that. If I choose the stock kernel (no Xen) from the Grub menu, it will continue to boot into that just fine.
My grub.cfg file has these entries of note:
multiboot /xen-4.6.0-2.el7.gz placeholder dom0_mem=1024M,max:1024M cpuinfo com1=115200,8n1 console=com1,tty loglvl=all guest_loglvl=all ${xen_rm_opts}
echo 'Loading Linux 3.18.21-16.el7.x86_64 ...'
module /vmlinuz-3.18.21-16.el7.x86_64 placeholder root=UUID=9dc18146-f9b3-41cc-ba9c-7314689abcde ro crashkernel=auto debug irqpoll ipv6.disable=1 console=hvc0 earlyprintk=xen nomodeset
echo 'Loading initial ramdisk ...'
module --nounzip /initramfs-3.18.21-16.el7.x86_64.img
What I have tried:
1) adding debug into the vmlinuz line
2) disabling ipv6 in that line
3) adding root=UUID=9dc18146-f9b3-41cc-ba9c-7314689abcde to the last line AFTER /initramfs ?.
Nothing so far has made any difference. Obviously the process works, as it works for me just fine on the Dell server.
Underlying this machine is a SATA RAID 1 PCI card with two SSD drives attached in a RAID 1 mirror. Not that that should matter, but I?m including it for reference. As noted previously, it boots into the stock kernel just fine.
Any help would be appreciated.
--
Craig Thompson, President
Caldwell Global Communications, Inc.
423-559-5465
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