Re: >2TB with LVM v1.0.3?

[Peter Smith <peter.smith@utsouthwestern.edu>]

To follow up, we got our new 6000GB online and I was able to allocate 
all the space to a single VG, but obviously you can only allocate VG 
space into slices (LVs), each a block device, and each limited to the 
2TB limit.

Peter Smith



Peter Smith wrote:

> I'm running Redhat v7.2 (very old I know) and LVM v1.0.3 .  I have a 
> 1600GB ext3 partition currently in use and am planning to grow that by 
> ~ 6000GB.  From the documentation that I have found, it looks like I 
> may be able to do this without modification to my system.  However, 
> I'm querying to verify it..
>
> Current ext3 filesystem has 4KB block size (supposedly good to 16TB 
> total.)
>
> I have one LV defined with a size of "3456106496".  I have two PVs, 
> the first (sdc) with a size of "1646481408" and a PE size of 
> "1048576", the second (sdd) with a size of "1815863296" and a PE size 
> of "1048576" as well.
>
> Allocation of the ext3 is at "1152717492" 1k-blocks used and 
> "548221548" 1k-blocks available right now.  The RAID system that the 
> storage resides on has, up until now, sort-of enforced a roughly <2TB 
> limit per device (2 cabinets currently with 1600GB and the RAID can 
> not span cabinets,) I can continue to allocate ~ 2TB per device to fit 
> within the kernel 2.4 32-bit block device limit.  I do not know if I 
> am actually limited to 1TB per device as I've read before from Redhat, 
> so that may be a possibility.
>
> Here is my current vgdisplay
> [root@swlx201 root]# vgdisplay
> --- Volume group ---
> VG Name               data
> VG Access             read/write
> VG Status             available/resizable
> VG #                  0
> MAX LV                256
> Cur LV                1
> Open LV               1
> MAX LV Size           2 TB
> Max PV                256
> Cur PV                2
> Act PV                2
> VG Size               1.61 TB
> PE Size               1 GB
> Total PE              1648
> Alloc PE / Size       1648 / 1.61 TB
> Free  PE / Size       0 / 0
>
>
> Any comments, questions, etc VERY welcome.
>
> Peter Smith
>
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>
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