[mythtv-users] Requesting help regarding mythtv.org LVM documentation

[Robert Kulagowski]

> # vgcreate --name VGforMyth -s 64 /dev/hda5
> 
> # vgcreate --name VGforMyth -s 64m /dev/hda5
> vgcreate: unrecognized option `--name'
> 
> I took a guess and ran
> 
> # vgcreate VGforMyth -s 64m /dev/hda5
> vgcreate -- INFO: maximum logical volume size is 2
> Terabyte
> vgcreate -- doing automatic backup of volume group
> "VGforMyth"
> vgcreate -- volume group "VGforMyth" successfully
> created and activated

Yes, that's a doc bug.  I'll update the HOWTO.

> I then considered the -- to be comments in the
> documentation so

No, that's wrong.  The -- is a parameter seperator.

> # lvcreate video 750 VGforMyth
> lvcreate -- please enter either option -l or -L
> 
> Didn't work. Next attempt
> # lvcreate --name video --size 750 VGforMyth
> lvcreate -- only 11 free physical extents in volume
> group "VGforMyth"

Yes, because 11 * 64MB (which was specified in the vgcreate line) is 
704, which is pretty close to the "approx 700MB" you said in your 
message.  You don't have 750MB, you you've got 704MB.

> Running vgdisplay kicked back the following:
> # vgdisplay
<snip>
> Total PE              11
> Alloc PE / Size       0 / 0
> Does anyone have any tips or suggestions to get me
> through this process?

vgdisplay confirms that you have 11 total PE's, so make sure when you 
create the LVM you use that.

# lvcreate -l 11 VGforMyth -n video

(You could also re-run the example lvcreate, but use the correct size)