[Linux-cluster] GFS data access failover

[Brian Jackson]

On Wed, 7 Jul 2004 19:26:12 +0200, Nivet Rémi <remi.nivet at atosorigin.com> wrote:
> Hi everyone,
> 
> I successfully set up a 2-nodes cluster after three days of hard work looking for docs and crashing servers, but it finaly worked and I'm able to export GFS partition from one node to the other using gnbd ;-)
> 
> Now my question is : is there any way to use 2 dataservers (maybe replicate data between them but I can manage that on myself) and use a failover (or round-robin) mechanism so that if one of the dataserver crash, my clients can still access the data from the other dataserver ?
> 

Nope, this is frequently asked. You need some sort of cluster aware
mirroring. The kernels' md drivers aren't even close. I believe some
people are currently looking at/working on this

--Brian

> As an optional question : I'm trying to use clvmd to propagate lvm config from one node to the other, but when I try to create LV, I've got the following error :
> 
>         Error locking on node XXXX: Internal lvm error, check syslog
>         Failed to activate new LV.
> 
> and the only log I have on the remote node is :
> 
>         lvm[721]: Volume group for uuid not found: LWuaVGYKeELfrxE16CgW0pUOAilU4CSNmLXVJ3b7i5AsjhWgfszorCRkn5KRCQTU
> 
> anyone knows what I'm missing ?
> 
> Thanks,
> Rémi.
> 
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