On Dec 28, 2012, at 1:39 AM, Ed Greshko <[email protected]> wrote:

> On 12/28/2012 12:31 AM, Chris Murphy wrote:
>> 
>> If you mean you want a single partition consuming the whole disk, all of it 
>> in the VG, but to specify LVs that don't use all of the space in the VG, no 
>> you can't do that within anaconda. You'd need to do that in a shell first: 
>> partition, make it a pv, add it to a VG, then run anaconda. Any mount points 
>> you create will by default become LV's using that VG.
> 
> Your last paragraph says it all....  "you can't do that in anaconda".  
> *Previously*, you could….

It seems more likely that's incidental behavior, than designed behavior. It's 
an installer. Its job is to install a system.


> 
> From an F17 system ....
> 
> [root@f17dt ~]# pvscan
>  PV /dev/sda3   VG vg_A   lvm2 [196.91 GiB / 28.31 GiB free]
>  PV /dev/sda2   VG vg_B   lvm2 [58.56 GiB / 14.59 GiB free]
>  Total: 2 [255.47 GiB] / in use: 2 [255.47 GiB] / in no VG: 0 [0   ]
> [root@f17dt ~]# lvscan
>  ACTIVE            '/dev/vg_A/lv01' [97.66 GiB] inherit       (/home)
>  ACTIVE            '/dev/vg_A/lv00' [1.97 GiB] inherit         (swap)
>  ACTIVE            '/dev/vg_A/lv02' [68.97 GiB] inherit       (/usr/local)
>  ACTIVE            '/dev/vg_B/lv01' [34.19 GiB] inherit       (/opt)
>  ACTIVE            '/dev/vg_B/lv00' [9.78 GiB] inherit         (/)

> It was easy to create 2 PV's on one disk and then several LV's within the PV. 
>  As you can see, I've got free space on both PV's which can be added to what 
> LV I want online.

I see confusion. Do you realize you effectively have 10 partitions, that we 
know of, on a single disk? What's the advantage of sda2 and sda3 being separate 
instead of in a single VG? You're basically increasing your overall system 
latency by having multiple PV's on a single spindle. In any case, this is the 
domain of a different application, not an OS installer.


> 
> Can't do the same configuration at install time, with ease, on F18.  So, the 
> question remains, will the same feature be added in the future as existed in 
> F17 and prior releases?

A valid question for the installer to ask the user is how to allocate disk free 
space: what amount of that space should become a PV/VG. Making assumptions 
ensures it's going to be wrong a good percent of the time. 

Chris Murphy
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