Re: [fedora-virt] CentOS 6 install via virt-install - "No usable disks have been found."

[Boris Derzhavets <bderzhavets@xxxxxxxxx>]

> Did you see?:
> http://wiki.xen.org/xenwiki/RHEL6Xen4Tutorial

It's not what he need.  Mirror is probably broken.

What  is official centos 6 installation URL ?
I never cared using SL-6-Install.DVD , mounted loop on /var/www/rhel
CentOS 6 Network installer behaves strange vs SL-6 Network Installer ISO.

Boris.
P.S. Pickup SL 6 up. It's the same


--- On Tue, 7/26/11, Pasi Kärkkäinen <pasik@xxxxxx> wrote:

From: Pasi Kärkkäinen <pasik@xxxxxx>
Subject: Re: [fedora-virt] CentOS 6 install via virt-install - "No usable disks have been found."
To: "Bill McGonigle" <bill@xxxxxxxxxxxxxxxx>
Cc: xen@xxxxxxxxxxxxxxxxxxxxxxx, virt@xxxxxxxxxxxxxxxxxxxxxxx
Date: Tuesday, July 26, 2011, 7:05 AM

On Tue, Jul 26, 2011 at 02:07:30AM -0400, Bill McGonigle wrote:
> Hi, all,
>
> I'm not seeing disks under CentOS 6 when trying to install.  I'm using:
>
>    xen-4.0.2-1.fc14.x86_64
>    2.6.32.39-175.xendom0.fc13.x86_64
>
> installing using:
>
> virt-install --debug -n sully --mac=02:00:0A:01:01:10 -f
> /var/lib/xen/images/sully -s 12 -r 2048 --vcpus=2 --nographics -p
> --os-type=linux --os-variant=rhel6 --location
> http://librescu.bfccomputing.com/cobbler/ks_mirror/centos6-x86_64/
>

Did you try using a phy: backend? ie. lvm volume or a block device?


> It sounded like:
>
>    https://bugzilla.redhat.com/show_bug.cgi?id=678374
>
> so I tried dropping the --nonsparse option, but I'm using a newer
> version of python-virtinstall:
>
>    python-virtinst-0.500.6-1.fc14.noarch
>
> than should be required, and I'm seeing this with and with the option
> anyway.
>
> I do see the disk image is created, and attached to the DomU.  e.g.:
>
> [2011-07-26 01:01:47 18534] DEBUG (DevController:97) DevController:
> writing {'domain': 'sully', 'frontend':
> '/local/domain/18/device/vbd/51712', 'uuid':
> '3380cea8-a322-292d-cc5d-8bb084306976', 'bootable': '1', 'dev': 'xvda',
> 'state': '1', 'params': 'aio:/var/lib/xen/images/sully', 'mode': 'w',
> 'online': '1', 'frontend-id': '18', 'type': 'tap'} to
> /local/domain/0/backend/tap/18/51712.
>
> and I can see the disk image if I dump configuration from virsh.
>
> I do see this in the DomU kernel messages:
>
>    XENBUS: Device with no driver: device/vbd/51712
>    XENBUS: Device with no driver: device/vif/0
>    XENBUS: Device with no driver: device/console/0
>
> but I see reports online that say not to worry about those, initrd will
> load the modules.
>

Can you post the full domU kernel messages? probably with "console=hvc0 earlyprintk=xen"

> The initrd does have:
>
>    ./kernel/drivers/xen
>    ./kernel/drivers/xen/xenfs
>    ./kernel/drivers/net/xen-netfront.ko.gz
>    ./kernel/drivers/block/xen-blkfront.ko.gz
>
> on it.
>
> I tried adding:
>
>    xen_emul_unplug=never
>

xen_emul_unplug is only needed for HVM guests, not for PV.


> to the kernel parameters per a previous thread here, but that didn't
> seem to change anything.
>
> It seems like others are having success with CentOS 6 in general:
>
> 
> http://grantmcwilliams.com/tech/virtualization/xen-howtos/538-centos-6-virtual-machine-64-bit-installation-on-xen
>
> so I suspect it's got something to do with Xen 4.0.2, but I'm not sure
> where to look right now.
>
> Any suggestions?
>

Did you see?:
http://wiki.xen.org/xenwiki/RHEL6Xen4Tutorial


-- Pasi


> -Bill
>
> --
> Bill McGonigle, Owner
> BFC Computing, LLC
> http://bfccomputing.com/
> Telephone: +1.855.SW.LIBRE
> Email, IM, VOIP: bill@xxxxxxxxxxxxxxxx
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