[linux-lvm] Removing a Bad disk from LVM w/o a new disk

[linux-lvm] Removing a Bad disk from LVM w/o a new disk

[Ow Mun Heng]

Current situation is that I have a bad disk /dev/sdb1 in an existing lvm
partition. (sda1/sda4/sdb1)

I would like to remove it from the VG. (There are no free PE anywhere.
I've maxed it out.)

I've already reduced the existing VG to the size of sda1+sda4
partition. 

I would like to remove entirely the Physical Extents from the volume
group. It doesn't seem like there's a way to do this w/o putting another
disk inside? 

I'm sure that's not true. Doing a 

$vgreduce storage /dev/sdb1
Physical volume "/dev/sdb1" still in use

I have no idea what/who is using it. fuser/lsof etc doesn't show up
anything.

I actually don't much care about the data, I've already copied it
somewhere else. So, instead of just blowing up everything, I rather take
this as a learning experience.


-- 
Ow Mun Heng <Ow.Mun.Heng@wdc.com>

Re: [linux-lvm] Removing a Bad disk from LVM w/o a new disk

[Harik A'ttar]

Ow Mun Heng wrote:
> Current situation is that I have a bad disk /dev/sdb1 in an existing lvm
> partition. (sda1/sda4/sdb1)
> 
> I would like to remove it from the VG. (There are no free PE anywhere.
> I've maxed it out.)
> 
> I've already reduced the existing VG to the size of sda1+sda4
> partition. 

> $vgreduce storage /dev/sdb1
> Physical volume "/dev/sdb1" still in use

You mean you reduced the existing LVs?

Try this:

pvmove -v /dev/sdb1

That will move all the data off sdb1 to the other drives.  You need 
dm-mirror either compiled in your kernel or as a module to use it.

Read the manpage for more information.