Am 06.03.2012 19:47, schrieb Michael Mol:
> On Tue, Mar 6, 2012 at 1:34 PM, Stroller <stroller@stellar.eclipse.co.uk> wrote:
>>
>> On 6 March 2012, at 17:25, Neil Bothwick wrote:
>>
>>> On Tue, 6 Mar 2012 16:32:56 +0000, Stroller wrote:
>>>
>>>>> … I initially want to replace the 3x1TBs with a single 3TB drive but
>>>>> i've never removed/replaced a drive in an LVM setup before. I think I
>>>>> understand how it is done, using pvmove …
>>>>
>>>> Or you could just format and mount the new drive and use `cp`.
>>>
>>> Thereby instantly removing the benefits of LVM and making it almost
>>> impossible to extend the space by adding another drive when needed.
>>
>> Uh, why not create a new volume group with the new disk?
>>

Nitpicking: No need for a new volume group, just a new PV. Using a
separate VG makes migration harder.

>> OP says he wants to *replace* the old disks.
> 
> Makes a certain amount of sense. But it sounds like he found a tool
> (pvmove) to do what he needs to do, and trying to do more on top
> complicates things beyond what they need to be.
> 
> 
>>
>> Admittedly, I don't like the RAID0 nature of LVM, so my question probably did reflect that cynicism.
> 
> I typically put LVM on top of RAID.
> 
> 

I guess the OP is running the JBOD nature ("linear" in LVM terms). Not
that it matters, really.

BTW: Am I the only one seeing a good opportunity for creating a backup
using the old disks? LVM snapshots would be perfect here, as long as the
old disks can be kept running.

Regards,
Florian Philipp