Multiple Mounting of one XFS Partition

Multiple Mounting of one XFS Partition

[Steffen Knauf]

Hello,

i have 2 Servers which are connected with a raid via FibreChannel.
Both of them have mounted the same XFS-Partition. But if i change a 
Filepermission
or add some Files at the Partition of server1, the partition of server2 
don't show the modifications
until i remount the Partitions. I don't know how whether it is a cache 
Option or something else.
Perhaps someone have an idea.
Thanks!

greets

Steffen

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

Re: Multiple Mounting of one XFS Partition

[Felix Blyakher]

On Mar 16, 2009, at 9:06 AM, Steffen Knauf wrote:

> Hello,
>
> i have 2 Servers which are connected with a raid via FibreChannel.

Unless you have some sort of cluster filesystem, it's not going
to work.

>
> Both of them have mounted the same XFS-Partition. But if i change a  
> Filepermission
> or add some Files at the Partition of server1, the partition of  
> server2 don't show the modifications
> until i remount the Partitions.

The changes done by server1 won't be flushed to disk, where they
could be seen by server2, till much later, or on unmount.

> I don't know how whether it is a cache Option or something else.

That's how any modern filesystem work.

Cheers,
Felix

>
> Perhaps someone have an idea.
> Thanks!
>
> greets
>
> Steffen
>
> _______________________________________________
> xfs mailing list
> xfs@oss.sgi.com
> http://oss.sgi.com/mailman/listinfo/xfs

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs

Re: Multiple Mounting of one XFS Partition

[Eric Sandeen]

Steffen Knauf wrote:
> Hello,
> 
> i have 2 Servers which are connected with a raid via FibreChannel.
> Both of them have mounted the same XFS-Partition. But if i change a 
> Filepermission
> or add some Files at the Partition of server1, the partition of server2 
> don't show the modifications
> until i remount the Partitions. I don't know how whether it is a cache 
> Option or something else.
> Perhaps someone have an idea.
> Thanks!
> 
> greets

You can't do this.  It will corrupt your filesystem; there is *nothing*
which will give you coherency between the nodes.

This is what SGI sells CXFS for (for big $$$)

-Eric

_______________________________________________
xfs mailing list
xfs@oss.sgi.com
http://oss.sgi.com/mailman/listinfo/xfs