Re: [Xen-users] LVM based Xen setup.

[Meghanand Acharekar <vasco.debian@xxxxxxxxx>]

Thanks for your reply Shane,

There what I made mistake, I formatted the LV as ext3 file system due to which it was not getting detected in CentOS installer.
I came to understand this after observing the xend-logs which was trying to recognize it as RAW device.

I'm having one more query, I have installed CentOS on once of the domU using this setups.
Since we can create snapshots for LV, is it possible to use these snapshots as disk images for booting new domU,
In order to replicate same configuration over multiple domU

On Wed, Mar 14, 2012 at 8:22 PM, Shane Johnson <sdj@xxxxxxxxxxxxxxxxxxxxxx> wrote:

I'm a little confused, if you are going to use the LV as a raw drive, then there is no need for mkfs. ÂI see in your OP that you set the mkfs command on vm-ldap-1 where all the other commands reference vm-test-1 Âis this just a typo?

Yes this a typo mistake ?

Âor did the wrong LV get formatted? ÂOtherwise, everything looks correct. ÂFrom what I have seen you can address the logical volumes either with /dev/mapper/{vg}-{lv} method or /dev/{vg}/{lv} so that shouldn't cause any problems. Â

I haven't used kickstarter, so I don't know if your boot options are included in there, but I don't see where your VM is supposed to pull a viable boot from (Either form a CD, ISO, or other OS.) ÂHope this is helpful.

Yes, Kickstart configuration takes care of everything.
Â

Shane

On Wed, Mar 14, 2012 at 8:03 AM, Meghanand Acharekar <vasco.debian@xxxxxxxxx> wrote:

Found the problem

Since I want use LVM as raw drive (to perform fresh installation via kickstart)
Formatting LV was not required

# mkfs.ext3 /dev/xenvm/vm-test-1

Regards,
Meghanand N. Acharekar

On Wed, Mar 14, 2012 at 4:42 PM, Meghanand Acharekar <vasco.debian@xxxxxxxxx> wrote:

On Wed, Mar 14, 2012 at 3:28 PM, Benjamin Schweikert <b.schweikert@xxxxxxxxxxxxxx> wrote:

Hi,
i think there is the error:

disk = [ 'phy:/dev/xenvm/vm-test-1,xvda,w', ]

check the path please. as far as i know it should be something like:
/dev/mapper/vm-test-1--vm-test-1

I've used different name here.

# lvscan
ACTIVEÂÂÂÂÂÂÂÂÂÂÂ '/dev/xenvm/vm-test-1' [10.00 GB] inherit
Â

Ben

2012/3/14 Meghanand Acharekar <vasco.debian@xxxxxxxxx>:

> Hi,
>
> I'm trying to have lvm-based xen setup on CentOS (5.6) dom0
> I've kept a dedicated partition for this purpose, created PV & LVM as
> follows.
>
> pvcreate /dev/sdaX
> vgcreate xenvm /dev/sdaX
> lvcreate -L10240M -n vm-test-1 xenvm
> mkfs.ext3 /dev/xenvm/vm-ldap-1
>
> Now using following configuration file for installing (CentOS) on this LV
> named vm-test-1
>
> kernel = "/boot/vmlinuz"
> ramdisk = "/boot/initrd.img"
> extra = "text ks=http://test.example.com/centos-6.2.cfg"
> name = "vmtest-1"
> memory = "512"
> disk = [ 'phy:/dev/xenvm/vm-test-1,xvda,w', ]
> vif = [ 'bridge=xenbr0', ]
> vcpus=1
> > > > >
> After staring the server using xm create file.cfg
> It complaints regarding "no suitable drives found for installation".
>
> Am I missing some steps here ?
>
> Thanks & Regards,
> Meghanand N. Acharekar
>
>

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> Xen-users@xxxxxxxxxxxxx
> http://lists.xen.org/xen-users

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--
Shane D. Johnson

IT Administrator

Rasmussen Equipment

Regards,
Meghanand N. Acharekar

Â

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