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RE: [linux-lvm] lvm with raid



> I created /dev/md0 (raid autodetect)
> Did a pvcreate /dev/md0
> lvcreate'd partitions /usr /home /var

I think it's because of NO "LVM linux" partition ID.
Your md0 partition is "RAID Auto detect" and that's normal.
I'm not a guru of LVM, so I have no idea of what to do, but anyone out
there?
I'm interested too in this thing.
It works for me to have RAID partitions in LVM because I have a mix of hda1
+ hda2 + md0 + md1, so vgscan and vgchange works because of the "Linux LVM"
IDs on hda1 and hda2
Thanks for the GURU response.

-jec


> 
> copied and remounted everything.
> This all goes surprisingly well, until I decided to test with 
> a reboot.
> 
> vgscan and vgchange don't find a thing !
> 
> test:/home/james# vgscan 
> vgscan -- reading all physical volumes (this may take a while...)
> vgscan -- no volume groups found
> 
> test:/home/james# vgchange -a y
> vgchange -- no volume groups found
> 
> but if I try to recreate a PV 
> 
> test:/home/james# pvcreate /dev/md0
> pvcreate -- ERROR: can't initialize physical volume 
> "/dev/md0" of volume
> group "devlvm" without -ff
>  
> Everything is still there apparantly.
> 
> I must be missing something fundamental. Thanks fot any help 
> in advance.
> 
> James
> 
> 
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