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:
/mnt/vola
/mnt/volb
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
sure.
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.
--
Mr. Flibble
King of the Potato People
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