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<p>Hi Lalatendu,</p><p> </p><p>I've made the same test.</p><p>I've create a volume with 2 nodes sharing a 10G disk, without option "replica 2"</p><p>On the client, the share is 20Go.</p><p>The add a brick, the volume was 30Go.</p><p> </p><p>This scenario works fine.</p><p> </p><p>The problem occure when I want to have replication.</p><p>Running the same scenario with 6 nodes, and adding option "replica 2", finnaly my volume is 20go with 4 and adding 2 more nodes.</p><p> </p><p>If I create the same volume with the 6 nodes from the begining it OK, but I can't expand it with nodes 7 & 8 to 40Go , still 30go.</p><p> </p><p>For this test I run Fedora 20 with Gluster 3.5 from Fedora repository.</p><p> </p><p>I do not have this problem with MooseFS, but this solution do not have NFS support.</p><p> </p><p> </p><p>Best regards</p><p>Hugues</p><p><br /> </p><blockquote style="border-left: 2px solid #325FBA; padding-left: 5px;margin-left:5px;">-----Message initial-----<br /><strong>De:</strong> Lalatendu Mohanty <lmohanty@redhat.com><br /><strong>Envoyé:</strong> lun. 05-05-2014 15:10<br /><strong>Sujet:</strong> Re: [Gluster-users] Expand distributed replicated volume<br /><strong>À:</strong> Hugues Lepesant <hugues@lepesant.com>; gluster-users@gluster.org; <br /><style type="text/css">body { font-family: monospace; }</style> <div style="background-color: #FFFFFF; color: #000000; "><div>On 05/05/2014 03:08 PM, Hugues Lepesant wrote:</div> <blockquote type="cite" cite="mid:zarafa.53675c20.2fbf.49c021277ade2c2c@pe1950.lepesant.com"> <style type="text/css"> .bodyclass { font-family: Arial, Verdana, Sans-Serif ! important; font-size: 12px; padding: 5px 5px 5px 5px; margin: 0px; border-style: none; background-color: #ffffff; } p, ul, li { margin-top: 0px; margin-bottom: 0px; } </style> <p>Hi all,</p> <p> </p> <p>Does someone have already meet this ?</p> <p> </p> <p>Best regards,</p> <p>Hugues</p> </blockquote> <br /> I tried the similar steps on two Fedora20 VMs (each with 3 100GB partition) + gluster 3.5.0, but did not hit this issue. Here are the steps I performed.<br /> <br /> 1. Created a distribute replicate volume (2x2).<br /> 2. mounted the volume using native glusterfs mount. "df -h" shows 200GB for the mount point.<br /> 3. performed add brick with 2 partitions. The volume info shows 3x2)<br /> 4. df -h now shows 300GB for the mount point. <br /> <br /> Thanks,<br /> Lala<br /> <blockquote type="cite" cite="mid:zarafa.53675c20.2fbf.49c021277ade2c2c@pe1950.lepesant.com"> <p> </p> <blockquote style="border-left: 2px solid #325FBA; padding-left: 5px;margin-left:5px;">-----Message initial-----<br /> <strong>De:</strong> Hugues Lepesant <a title="This external link will open in a new window" target="_blank" onclick="parent.webclient.openWindow(this, 'createmail', 'index.php?load=dialog&task=createmail_standard&to=hugues@lepesant.com'); return false;" href="mailto:hugues@lepesant.com"><hugues@lepesant.com></a><br /> <strong>Envoyé:</strong> mar. 29-04-2014 11:51<br /> <strong>Sujet:</strong> [Gluster-users] Expand distributed replicated volume<br /> <strong>À:</strong> <a title="This external link will open in a new window" target="_blank" onclick="parent.webclient.openWindow(this, 'createmail', 'index.php?load=dialog&task=createmail_standard&to=gluster-users@gluster.org'); return false;" href="mailto:gluster-users@gluster.org">gluster-users@gluster.org</a>; <br /> <style type="text/css">.bodyclass { font-family: monospace; }</style> <style type="text/css"> .bodyclass { font-family: Arial, Verdana, Sans-Serif ! important; font-size: 12px; padding: 5px 5px 5px 5px; margin: 0px; border-style: none; background-color: #ffffff; } p, ul, li { margin-top: 0px; margin-bottom: 0px; } </style> <div><p>Hi all,</p> <p> </p> <p>I want to create a distributed replicated volume.<br /> And I want to be able to expand this volume.</p> <p><br /> To test this, I have 6 nodes each have a 10G disk to share.<br /> <br /> First I create the initial volume.<br /> <br /> # gluster volume create testvol replica 2 transport tcp node-01:/export/sdb1/brick node-02:/export/sdb1/brick node-03:/export/sdb1/brick node-04:/export/sdb1/brick<br /> <br /> On the client, I mount the volume :<br /> <br /> # mount -t glusterfs node-01:/testvol /storage-pool<br /> # df -h /storage-pool/<br /> Filesystem Size Used Avail Use% Mounted on<br /> node-01:/testvol 20G 3.9G 17G 20% /storage-pool<br /> <br /> The volume size is 20G, what I expect.<br /> <br /> Now I want to expand this volume, adding brick.<br /> <br /> To do so, I do on node-01:<br /> # gluster volume add-brick testvol node-05:/export/sdb1/brick node-06:/export/sdb1/brick<br /> # gluster volume rebalance testvol start<br /> # gluster volume rebalance testvol status<br /> # gluster volume info testvol<br /> <br /> Volume Name: testvol<br /> Type: Distributed-Replicate<br /> Volume ID: cd24ec0f-3503-4d67-9032-1db1d0987f9c<br /> Status: Started<br /> Number of Bricks: 3 x 2 = 6<br /> Transport-type: tcp<br /> Bricks:<br /> Brick1: node-01:/export/sdb1/brick<br /> Brick2: node-02:/export/sdb1/brick<br /> Brick3: node-03:/export/sdb1/brick<br /> Brick4: node-04:/export/sdb1/brick<br /> Brick5: node-05:/export/sdb1/brick<br /> Brick6: node-06:/export/sdb1/brick<br /> <br /> The back on client :<br /> <br /> # df -h /storage-pool/<br /> Filesystem Size Used Avail Use% Mounted on<br /> node-01:/testvol 20G 2.9G 18G 15% /storage-pool<br /> <br /> Even If I umount/mount the volume, It's always 20G.<br /> Should it not display a size of 30GB ?<br /> Like if I create a distributed volume and the add-brick with replicate option<br /> <br /> # gluster volume create testvol transport tcp node-01:/export/sdb1/brick node-02:/export/sdb1/brick node-03:/export/sdb1/brick<br /> # gluster volume start testvol<br /> # gluster volume add-brick testvol replica 2 node-04:/export/sdb1/brick node-05:/export/sdb1/brick node-06:/export/sdb1/brick<br /> # gluster volume info testvol<br /> <br /> Volume Name: testvol<br /> Type: Distributed-Replicate<br /> Volume ID: 31159749-85fb-4006-8240-25b74a7eb537<br /> Status: Started<br /> Number of Bricks: 3 x 2 = 6<br /> Transport-type: tcp<br /> Bricks:<br /> Brick1: node-01:/export/sdb1/brick<br /> Brick2: node-04:/export/sdb1/brick<br /> Brick3: node-02:/export/sdb1/brick<br /> Brick4: node-05:/export/sdb1/brick<br /> Brick5: node-03:/export/sdb1/brick<br /> Brick6: node-06:/export/sdb1/brick<br /> <br /> On client : <br /> # df -h /storage-pool/<br /> Filesystem Size Used Avail Use% Mounted on<br /> node-01:/testvol 30G 97M 30G 1% /storage-pool<br /> <br /> I'm using glusterfs-server 3.5.0 on Ubuntu 14.04 Trusty.<br /> <br /> Any help is welcome.<br /> Best regards,<br /> Hugues</p></div> <pre>
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