[linux-lvm] >2TB with LVM v1.0.3?
Peter Smith
peter.smith at utsouthwestern.edu
Mon May 10 14:42:32 UTC 2004
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 at 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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