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Re: [linux-lvm] Does LVM have any multipath failover capabilities?



Or you could simply use dm-multipath in round-robin fashion without having to manage priorities etc...
 
This would bring you :
 
      - More performance if the device at the other side can take the load
      - Native failover, if on path dies you'll still have the second path active.
 
On LVM point of view, you just have to pvcreate the mutilpath device  (/dev/mapper/mpathX if friendly_user_name true or /dev/mapper/<your disk UUID>)
 
Brem

 
2009/9/2, Chandra Seetharaman <sekharan us ibm com>:

On Tue, 2009-09-01 at 17:27 -0600, Chris Worley wrote:
> For example, two iSCSI drives are actually the same drive provided via
> two different subnets: if one of the drives becomes unresponsive, I
> need LVM to seamlessly failover to the other one.
>
> Otherwise, what's the right way to handle this?

Build lvm on top of a multipathed device (which comprises of the two
paths), with a priority callout that gives higher priority to one path
than the other.
>
> Thanks,
>
> Chris
>
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> linux-lvm redhat com
> https://www.redhat.com/mailman/listinfo/linux-lvm
> read the LVM HOW-TO at http://tldp.org/HOWTO/LVM-HOWTO/

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