CentOS 6 install via virt-install - "No usable disks have been found."

[Bill McGonigle]

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/

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.

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

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-vi...

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?

-Bill

-- 
Bill McGonigle, Owner
BFC Computing, LLC
http://bfccomputing.com/
Telephone: +1.855.SW.LIBRE
Email, IM, VOIP: bill(a)bfccomputing.com
VCard: http://bfccomputing.com/vcard/bill.vcf
Social networks: bill_mcgonigle/bill.mcgonigle

[Fedora-xen] CentOS 6 install via virt-install - "No usable disks have been found."

[Pasi Kärkkäinen]

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-vi...
>  
>  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(a)bfccomputing.com
>  VCard: http://bfccomputing.com/vcard/bill.vcf
>  Social networks: bill_mcgonigle/bill.mcgonigle
>  --
>  xen mailing list
>  xen(a)lists.fedoraproject.org
>  https://admin.fedoraproject.org/mailman/listinfo/xen

[Fedora-xen] CentOS 6 install via virt-install - "No usable disks have been found."

[Boris Derzhavets]

>  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(a)iki.fi&gt; wrote:

From: Pasi Kärkkäinen <pasik(a)iki.fi&gt;
Subject: Re: [fedora-virt] [Fedora-xen] CentOS 6 install via virt-install - "No
usable disks have been found."
To: "Bill McGonigle" <bill(a)bfccomputing.com&gt;
Cc: xen(a)lists.fedoraproject.org, virt(a)lists.fedoraproject.org
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-vi...
>  
>  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(a)bfccomputing.com
>  VCard: http://bfccomputing.com/vcard/bill.vcf
>  Social networks: bill_mcgonigle/bill.mcgonigle
>  --
>  xen mailing list
>  xen(a)lists.fedoraproject.org
>  https://admin.fedoraproject.org/mailman/listinfo/xen
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[Fedora-xen] CentOS 6 install via virt-install - "No usable disks have been found."

[Bill McGonigle]

On 07/26/2011 07:05 AM, Pasi Kärkkäinen wrote:
>  Did you try using a phy: backend? ie. lvm volume or a block device? 
I just got back to trying this today.  Switching to a phy: backend (a
zfs zvol in this case) absolutely worked.  I have to admit to trying it
on a 2.6.40 kernel vs. 2.6.32 last time, so I'm changing multiple
variables (I know, bad analysis!) but I don't have any reason to go back
to 2.6.32 either.

Everything is noticeably peppier too (not just disk - VNC, etc.).  Very
nice.

-Bill

-- 
Bill McGonigle, Owner
BFC Computing, LLC
http://bfccomputing.com/
Telephone: +1.855.SW.LIBRE
Email, IM, VOIP: bill(a)bfccomputing.com
VCard: http://bfccomputing.com/vcard/bill.vcf
Social networks: bill_mcgonigle/bill.mcgonigle