[Gluster-users] A simple way to federate gluster namespace ?
Robert Hajime Lanning
lanning at lanning.cc
Fri Apr 5 22:56:45 UTC 2013
On 04/05/13 15:33, Jay Vyas wrote:
> Hi guys:
> BTW thanks for the insights regarding locality . Now I have a new
> stupid question for you:
> Namespace federation !
> Say I have two gluster volumes, and I want to access both volumes from
> the same mount point.
> It would be cool if there was a "gluster volume federate volA volB
> supervol", which created a new volume that read/wrote to supervol/volA
> super/volB transparently.
> But in the absence of such a command, could I just federate two gluster
> namespaces using the mount command? Would there be nasty hidden overhead
> and costs to this?
> i.e. something like:
> mount -o /tmp/supermount/subA /submount/a
> mount -o /tmp/supermount/subB /submount/b
> Or maybe you could do the equivalent with symlinks?
Are you wanting to mix namespaces or make a tree?
A tree is easy:
If you want to mix namespaces (i.e. have the roots mingle so an ls show
files from both), that is not possible.
In linux you might be able to hack something with unionfs, but I am not
You won't be able to have a server mount both, then us them as bricks in
a "super volume", as the xattrs will clash.
King of the Potato People
More information about the Gluster-users