[Linux-cluster] GNBD & Network Outage

[Tony Fraser]

On Fri, 2005-02-04 at 02:26, Nigel Jewell wrote:
> The intention of the setup was to have two hosts both exporting an 
> unmounted device, and the alternative device using it as a RAID-1 
> device.  Then to use heartbeat to mount and unmount the partitions as 
> required.  For example:
> 
> HOST A:
> 
> /dev/hda1 (md0, ext3, mounted)
> /dev/hda2 (ext3, unmounted, gnbd_exported as A)
> /dev/gnbd/B (md0, ext3, mounted)
> 
> HOST B:
> 
> /dev/hda1 (ext3, unmounted, gnbd_exported as B)
> /dev/hda2 (md0, ext3, mounted)
> /dev/gnbd/A (md0, ext3, mounted)
> 
> I hope that makes sense.
> 
> If so, does what we are trying to achieve sound sensible?  Any 
> gotchas/advice?

That sounds to me just like what DRBD (http://www.drbd.org/) was deigned
to do.

You might want to take a look at it.

-- 
Tony Fraser
tony at sybaspace.com
Sybaspace Internet Solutions                        System Administrator
phone: (250) 246-5368                                fax: (250) 246-5398