Root partition and LVM

[Phil Meyer]

Mikkel L. Ellertson wrote:
> Timothy Murphy wrote:
>   
>> The official LVM HOWTO <www.tldp.org/HOWTO/LVM-HOWTO/>
>> warns against including the root partition in the VG,
>> while the documents pointed to in the Wiki, 
>> eg <http://people.redhat.com/agk/talks/>,
>> seem to assume that / will be included in the VG.
>>
>> Is the information in the HOWTO out-of-date?
>>
>>     
> What it says is:
>
> root on LV should be used by advanced users only root on LVM
> requires an initrd image that activates the root LV. If a kernel is
> upgraded without building the necessary initrd image, that kernel
> will be unbootable. Newer distributions support lvm in their
> mkinitrd scripts as well as their packaged initrd images, so this
> becomes less of an issue over time.
>
>
> Because RedHat and Fedora build the initrd image for you, this is
> not an issue unless you are building your own kernel. Then again, if
> you are building your own kernel, you are probably an advanced user
> - at least to the point of knowing that you need to build a matching
> initrd image to take care of mounting the LVM root partition.
>
> The way I read the warning is that if your distribution does not
> automatically take of building an initrd image that supports the
> root directory on LVM, then you had better know what you are doing
> if you decide you want to do it. If your distribution takes care of
> it, then it is not an issue unless you are building a custom kernel,
> and in that case you had better know what you are doing.
>
> Mikkel
>   
Plus, its still an issue to put the /boot partition in the LVM  space.