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xen-users
Re: [Xen-users] Mounting Xen LVM Guests
Good point, I generally keep my partitions separate, everything under / and then swap as a separate LV.
2009/1/7 Fajar A. Nugraha <fajar@xxxxxxxxx>
Mark Walkom wrote:
> All you need to do is;
>
> 1. Have a mount point, eg /mnt/tmp
> 2. mount /dev/xen-system/test01.max /mnt/tmp
>
> That is really all that is needed.
I don't think that's true.
When using virt-install, the LV will be treated as a whole disk. Thus it
may have partitions, or even PV/LV inside it.
> <mailto:eredicatorx@xxxxxxxxxxxxxxx>>
>
> I want to be able to mount LVM partitions that are xen guests when
> shut down of course.
>
> #root@max02:/home/virt# virt-install
> #Would you like a fully virtualized guest (yes or no)? This will
> allow you to run unmodified operating systems. yes
> #What is the name of your virtual machine? test01.max
> #How much RAM should be allocated (in megabytes)? 1000
> #What would you like to use as the disk (file path)?
> /dev/xen-system/test01.max
> #Would you like to enable graphics support? (yes or no) yes
> #What is the virtual CD image, CD device or install location?
> /export/home0/erin/ISO/CentOS-5.2-x86_64-netinstall.iso
>
CentOS (as is RedHat) uses LVM inside guests by default. If you let it
like that, then mounting domU filesystem in dom0 is going to be a pain.
Not impossible, but certainly not easy.
I'd actually suggest one of the followings :
- startup domU, setup nfs, have dom0 mount domU's share, or
- reinstall domU with virt-install, choose partitioning setup (not LVM)
on domU, or
- reinstall domU WITHOUT virt-install, use LVS on dom0 directly as
filesystem on domU (e.g. no more partioning or LVM on domU). This is not
possible using anaconda, thus have to be done manually. Or,
- learn how to use kpartx, pvscan, and vgscan, and hope you don't have
conflicting VG names.
Regards,
Fajar
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