Hi, OK, I was confused because in your original email you mentioned "a multiple of the striped so 4 other node". So yes your stripe count is 2, so you have to add bricks 2 by 2, as the error message says. If you didn't, then it would mean that you would distribute your data over two 2-brick stripes, and one 1-brick single volume, which I am reasonably sure wouldn't work. If you want to be able to add bricks one by one, you would need a regular distributed volume, without: - striping (requires adding as many drives as stripe count) - replication (requires adding as many drives as stripe replication count) - dispersion (requires adding as many drives as whatever your dispersion disk count is) The only two things that you can extend is the number of brick groups in a distributed volume, with a similar brick group, or the number of replicas (but I'm sure that there are corner cases where you can't do it, I haven't tried them yet). Is that clearer now? Thanks! JF On 16/03/15 16:56, Pierre Léonard wrote: > Hi JF Le Fillâtre, > > Hello, > > You cannot. As the message said, you cannot change the stripe count. > > I don't change the strip count, the number is the same. > > So > you can add 4 bricks and you have a distributed + striped volume, but > you cannot change the stripe count by re-adding existing bricks into the > volume with a different stripe count, or by adding an additional brick > to the volume. > > That is the real question : "is it possible to add a node to a stripe volume one by one ?" > I not when I receive a new node I can't insert it in the global cluster service ! > > > Your email isn't very clear; could you please send: > - the list of commands in the order that you typed them; > - the output of "gluster volume info" and "gluster volume status" > > On one of the four node : > [root@boogy2 ~]# gluster volume stop gvHome > > on the new node : > [root@moody gvHome]# gluster volume add-brick gvHome moody:/mnt/gvHome/brick1 > volume add-brick: failed: Incorrect number of bricks supplied 1 with count 2 > > [root@boogy2 ~]# gluster volume info gvHome > > Volume Name: gvHome > Type: Distributed-Stripe > Volume ID: aa7bc5be-e6f6-43b0-bba2-b9d51ed2e4ef > Status: Started > Number of Bricks: 2 x 2 = 4 > Transport-type: tcp > Bricks: > Brick1: boogy1:/mnt/gvHome/brick1 > Brick2: boogy2:/mnt/gvHome/brick1 > Brick3: boogy3:/mnt/gvHome/brick1 > Brick4: boogy4:/mnt/gvHome/brick1 > > > [root@boogy2 ~]# gluster volume status gvHome > Status of volume: gvHome > Gluster process Port Online Pid > ------------------------------------------------------------------------------ > Brick boogy1:/mnt/gvHome/brick1 49153 Y 21735 > Brick boogy2:/mnt/gvHome/brick1 49153 Y 121607 > Brick boogy3:/mnt/gvHome/brick1 49153 Y 26828 > Brick boogy4:/mnt/gvHome/brick1 49153 Y 116839 > NFS Server on localhost N/A N N/A > NFS Server on moody N/A N N/A > NFS Server on 138.102.172.94 2049 Y 116853 > NFS Server on boogy1 2049 Y 21749 > NFS Server on boogy3 2049 Y 26843 > > Task Status of Volume gvHome > ------------------------------------------------------------------------------ > There are no active volume tasks > > > > [root@boogy2 ~]# glusterd -V > glusterfs 3.6.1 built on Nov 7 2014 15:15:48 > > > that's all. > > > Many thank's > > sincereley > > -- > Signature electronique > INRA <http://www.inra.fr> > > *Pierre Léonard* > *Senior IT Manager* > *MetaGenoPolis* > Pierre.Leonard@xxxxxxxxxxxx <mailto:Pierre.Leonard@xxxxxxxxxxxx> > Tél. : +33 (0)1 34 65 29 78 > > Centre de recherche INRA > Domaine de Vilvert – Bât. 325 R+1 > 78 352 Jouy-en-Josas CEDEX > France > www.mgps.eu <http://www.mgps.eu> > -- Jean-François Le Fillâtre ------------------------------- HPC Systems Administrator LCSB - University of Luxembourg ------------------------------- PGP KeyID 0x134657C6 _______________________________________________ Gluster-users mailing list Gluster-users@xxxxxxxxxxx http://www.gluster.org/mailman/listinfo/gluster-users
