Understood. Thank you very much for the instant assistance.
Best Regards Mike_m -----Original Message----- From: Niels de Vos [mailto:[email protected]] Sent: 27 November 2015 18:42 To: Mountrakis, Michael (external - Project) <[email protected]> Cc: [email protected]; Stoyanov, Yavor (external - Project) <[email protected]> Subject: Re: [Gluster-users] Can I create a gluster volume from NFS mounted partitions? * PGP Signed by an unknown key On Fri, Nov 27, 2015 at 05:25:32PM +0000, Mountrakis, Michael wrote: > Hi team > > I have a special case here: I am trying to create a glusterFS volume from NFS > mounts offered by third party. > But it fails. The long story has as follows: > > I have two 50 GB NFS volumes offered from two data centres: > In DC1: > sbox1.mydomain:/q_files > IN DC2: > sbox2.mydomain:/q_files > > I dont have even ssh access to those sboxes so I cannot install or do > anything, but I am allowed to mount their directories with r/w over tcp. > > I have setup a pair of VM nodes running glusterFs. One node on DC1, one on > DC2. > On each of MY nodes, I mount the offered NFS partitions: > > The node in DC1 mybox1.mydomain.corp mounts the partition from DC1 machine: > mount -t nfs sbox1.mydomain:/q_files /nfs > > The node in DC2 mybox2.mydomain.corp mounts the partition from DC2 machine: > mount -t nfs sbox2.mydomain:/q_files /nfs > > I do the peering normally... > root@ mybox1:~ # gluster peer probe mybox2.mydomain > peer probe: success. Host mybox2.mydomain port 24007 already in peer list > > ok so far - no problem. > > Then I try to create a glusterFS volume from those mounts: > root@ mybox1:~ # gluster volume create mynfs replica 2 mybox1.mydomain:/nfs > mybox2.mydomain:/nfs force > volume create: contentstore_nfs: failed: Glusterfs is not supported on brick: > mybox1.mydomain:/nfs. > Setting extended attributes failed, reason: Operation not supported. > > I get this message: Operation not supported. > > The question is obvious: > Does GlusterFS supports such an operation? In other words, can I create a > glusterFS volume from bricks created from NFS mounts? > If it is feasible, can you please specify what am I doing wrong? Gluster requires support for extended attributes on the filesystem. NFS does not support this (yet). At the moment, it is not possible to use NFS exports as Gluster bricks. Once the NFS specification for supporting extended attributes is in place, NFS-clients and NFS-servers need to start implementing this. Only after that, it will be possible to use NFS mountpoints as Gluster bricks. see https://tools.ietf.org/html/draft-ietf-nfsv4-xattrs-01 for more technical details on the (current in draft) specification. HTH, Niels * Unknown Key * 0x29C2C5B3 _______________________________________________ Gluster-users mailing list [email protected] http://www.gluster.org/mailman/listinfo/gluster-users
