Hello again:

How can one move a striped logical volumes (in an EMC)? I have read that
regular pvmove/vgexport etc.. won't work because it is extent based while
striped lvol's are in kb's .

Any advise would be great.

The EMC striping is invisible to LVM - these are two different layers
of management. If you are moving a logical volume, use LVM commands
to accomplish this (pvmove, lvextend). Where are you moving the data
to?

By the way, I would recommend using lvextend/lvreduce (mirror copies)
instead of pvmove. In other words, extend the mirror to the new
destination, and once this is done, reduce it from the original
location. If pvmove aborts or doesn't work correctly, you will be so
totally screwed.

Which brings me to the last point - if you care about this data, back
it up first before you move it

Best Regards,

HP_BRS


"BB" <ccc@caraudio.com> wrote in message news:<3BK4d.142710$Q7D.127318@twister01.bloor.is.n et.cable.rogers.com>...
> Hello again:
>
> How can one move a striped logical volumes (in an EMC)? I have read that
> regular pvmove/vgexport etc.. won't work because it is extent based while
> striped lvol's are in kb's .
>
> Any advise would be great.

I was under the impression that striped volumes can't be moved via pvmove at
all (due to difference between extent based operations vs. stripe sized
operations).

I agree that lvreduce would be better than dd for sure. I thought their
might be something else that may make my life easier!

I am covered from Backup point of view but always nice when you don't have
recover a terabyte of data.

thank you.
"HP_BRS" <born2veg@yahoo.com> wrote in message
news:bb82cc2.0409260425.4eaa18d1@posting.google.co m...
> The EMC striping is invisible to LVM - these are two different layers
> of management. If you are moving a logical volume, use LVM commands
> to accomplish this (pvmove, lvextend). Where are you moving the data
> to?
>
> By the way, I would recommend using lvextend/lvreduce (mirror copies)
> instead of pvmove. In other words, extend the mirror to the new
> destination, and once this is done, reduce it from the original
> location. If pvmove aborts or doesn't work correctly, you will be so
> totally screwed.
>
> Which brings me to the last point - if you care about this data, back
> it up first before you move it
>
> Best Regards,
>
> HP_BRS
>
>
> "BB" <ccc@caraudio.com> wrote in message
news:<3BK4d.142710$Q7D.127318@twister01.bloor.is.n et.cable.rogers.com>...
> > Hello again:
> >
> > How can one move a striped logical volumes (in an EMC)? I have read that
> > regular pvmove/vgexport etc.. won't work because it is extent based
while
> > striped lvol's are in kb's .
> >
> > Any advise would be great.