[Gluster-users] Add single server

[Gandalf Corvotempesta]

2017-05-01 19:36 GMT+02:00 Pranith Kumar Karampuri <pkarampu at redhat.com>:
> To know GFID of file1 you must know where the file resides so that you can
> do getxattr trusted.gfid on the file. So storing server/brick location on
> gfid is not getting us much more information that what we already have.

It was an example. You can use the same xattr solution based on a hash.
A full-path for each volume is unique (obviously, you can't have two
"/tmp/my/file" on the same volume), thus
hashing that to something like SHA1("/tmp/my/file") will give you a
unique name (50b73d9c5dfda264d3878860ed7b1295e104e8ae)
You can use that unique file-name (stored somewhere like
".metedata/50b73d9c5dfda264d3878860ed7b1295e104e8ae" to store the
xattr with proper file locations across the cluster.

As long as you sync the ".metadata" directory across the trusted pool
(or across all member regarding the affected volume),
you should be able to get proper file location by looking for the xattr.

This is just a very basic and stupid POC, i'm just trying to explain
my reasoning.