[linux-lvm] LVM across network

neuron neuron at hollowtube.mine.nu
Wed Nov 26 09:59:02 UTC 2003


quick question about this, been looking for a good solution for this a long time.  Any filesystems that can loose connectivity?  I have a setup where I can't guarantee all the computers will stay stable, but it's only a setup for temporary storage anyway (1gb networks, temporary storage is for rendering files).

> 
>   Yes.  This is possible with NBD 2.0 and later (earlier nbd tools has
>   limitation  of  4GB  per  shared  disk/volume/device).  You  need to
>   compile the NBD (Network Block Device) module in the kernel too.
> 
>   Then simply run on the server (the machines hosting spare volumes):
> 
>     nbd-server  10000 /dev/hdax  (replace 10009 with the port you want
>     to use)
> 
>   On  the  client  machine  (where  you want to run LVM to collect all
>   space;
> 
>     nbd-client IP port /dev/nbd/0
> 
>   For  each  server  you connect simply change the IP/port and the NBD
>   device number. After this you run "vgscan" and "vgchange -ay vg"
> 
>   You  should  be warned though. If you loose network connectivity you
>   can end up with filesystem damage.
> 
> 
> > Hello, 
> > I have simple question. Is it possible run LVM across network ?
> > For example, first disk on pc1, second on pc3, third on pc3...
> > I need file system that colecting free space across network onto one
> > point.
> > Thank you, Marek Jan 
> 
> 
> > _______________________________________________
> > linux-lvm mailing list
> > linux-lvm at sistina.com
> > http://lists.sistina.com/mailman/listinfo/linux-lvm
> > read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/
> 
> 
> 




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