[linux-lvm] shift PV from disk to raid device?

Kai Schaetzl maillists at conactive.com
Tue Dec 9 18:16:43 UTC 2008

Thanks for the long reply, Stuart. Still trying to digest it. As a quick 
info: I'm using CentoS 5.2 with mdadm-2.6.4-1.el5.

I created a partition /dev/sda3, created /dev/md2 with it and then 
pvcreated /dev/sda3 mistakenly. I think (!) I remember that if I tried to 
do it the other way around (create PV and LVs on /dev/sda3, then create an 
md device from sda3) it would fail with device busy until I deactivated 
the LVs. Then I could do that and it seemingly worked and didn't destroy 
the data. But there were some error messages when using pv/lvdisplay if I 
remember right. I just did this for testing what I can do with all that as 
I had the chance to do it :-) before recreating the array the correct way 
and filling it with my backup data on sdb3. Unfortunately, then I 
overlooked this tiny bit and created the PV on the wrong device ...


Kai Schätzl, Berlin, Germany
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