[Linux-cluster] RE : GFS Sharing Hard Disk

[Andrew C. Dingman]

The short answer is that you need a "complete cluster setup" to make any
simultaneous-access shared-storage solution work. You need cluster
membership, locking, and fencing for GFS. Depending on your needs, you
might be able to skip much of the rest of cluster suite's feature set,
but you really do need that membership and locking infrastructure. It
makes safe concurrent access to the same disks possible.


On Wed, 2006-06-21 at 16:55 +0800, Sherman Chan wrote:
> Hi,
> I would like to know is that possible to has a hard disk physically
> shared by multi servers.  I have a SAN which has a logical disk setup
> that can be mount/accessed by multi servers at the same time directly,
> however lacking off global locking/synchronization system the data can
> not be shared properly, data I update from server 1, could not been
> seen on server 2, unless I dismount and remount the disk on server
> 2.  I know thing can not be that easy.
>  
> I do not want to lose performance by using NFS or iSCSI.  I have look
> at GFS, it seems that is a right tools to me but I do not want to
> setup a full cluster environment.  Does it has any way to use GFS
> without a complete cluster setup?
>  
>  
>  
> Thanks
> Sherman
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Andrew C. Dingman
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Cook
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adingman at cookgroup.com