Peter Beck:
> On 06/05/2011 04:51 PM, Jochen Schulz wrote:
>> What I would probably do is:
>>
>> - install new disk alongside the old one
>> - put one big partition on the new disk and pvcreate the partition
>> - vgextend the existing VG with the new partition
>> - vgreduce the VG, removing the old disk's partitions
>>
>> That should be just as fast as dd'ing the old filesystems and can be
>> done without downtime. You don't need to resize any existing partitions,
>> but you can of course grow the LVs and the filesystems afterwards, if
>> you want to take advantage of the additional space.
>
> and this will also work when the operating system is running on this
> lvm ?
Yes, if you add the pvmove step that I forgot to mention. Just expect a
(heavy) drop in IO performance as both the new and the old disk are very
busy during the move.
If you also have filesystems on non-LVM devices, you have to take care
of them by other means. If you boot from the disk, don't forget to
grub-install.
J.
--
Quite often I wonder why I am not more famous and/or more wealthy.
[Agree] [Disagree]
<http://www.slowlydownward.com/NODATA/data_enter2.html>
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