Peter Blajev wrote:
>
> > Undo the LVM config, wipe out any MBR or disklabels on the drive,
> > then pvcreate the raw disk (/dev/sdb) it should be able to handle
> > the whole 5.4TB.
>
> I tried this but I'll try again tonight just in case I missed
> something the
> first time.
>
> I didn't check what pvcreate did but vgcreate after that gave
> me 2TB volume
> group. Googling around it looks like there is 2TB limit and
> there should be
> some kernel parameters to tweak but I still can't get a clear answer.
I believe there is a 2TB limit on fdisk MBR partition tables, and if
one already exists on the disk then LVM will use it.
Do,
pvremove /dev/sdX
dd if=/dev/zero of=/dev/sdX bs=512 count=63
pvcreate /dev/sdX
Do a 'pvs' to list the pv and see it's size there.
When creating a vg there may be a limit on the total # of extents per
vg, so you may have to increase the extent size from 4MB to 8 or 16.
-Ross
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