<html><body><div style="font-family: times new roman, new york, times, serif; font-size: 12pt; color: #000000"><div>Hi William,<br></div><div><br></div><div>If you want to increase capacity of a disperse volume, you have to add bricks to your existing disperse volume.<br></div><div>The number of bricks you add should be in multiple of the existing configuration.<br></div><div><br></div><div>For example:<br></div><div><br></div><div>If you have created a disperse volume like this -<br></div><div><br></div><div>gluster volume create myvol disperse 3 redundancy 1 host1:brick1 host2:brick2 host3:brick3 <br></div><div><br></div><div>This is a 1 x (2+1) disperse volume.<br></div><div>Now if you want to add some bricks to this volume, you have to do following - <br></div><div><br></div><div><div>gluster volume add-brick myvol host1:brick11 host2:brick22 host3:brick33</div><div>which will add 3 bricks in the form of one new sub volume - 2 x (2+1)<br></div><div><br></div><div>or you can do this <br></div><div><br></div><div>gluster volume add-brick myvol host1:brick11 host2:brick22 host3:brick33 host1:brick111 host2:brick222 host3:brick333<br></div></div><div>which will add 6 bricks in the form of two new sub volume - 3 x (2+1)<br></div><div><br></div><div>You mixed replication and disperse words so I am not sure which type of volume you have created. However, for replica volume also you have to add bricks in multiple.<br></div><div><br></div><div>In these type of queries, it would be better to provide information about volumes which would help us to understand your questions. <br></div><div><br></div><div>gluster v <volume name> info<br></div><div>gluster v <volume name> status<br></div><div><br></div><div>---<br></div><div>Ashish<br></div><div><br></div><hr id="zwchr"><div style="color:#000;font-weight:normal;font-style:normal;text-decoration:none;font-family:Helvetica,Arial,sans-serif;font-size:12pt;" data-mce-style="color: #000; font-weight: normal; font-style: normal; text-decoration: none; font-family: Helvetica,Arial,sans-serif; font-size: 12pt;"><b>From: </b>"William Ferrell" <willfe@gmail.com><br><b>To: </b>gluster-users@gluster.org<br><b>Sent: </b>Wednesday, September 25, 2019 6:02:37 PM<br><b>Subject: </b>[Gluster-users] Add single brick to dispersed volume?<br><div><br></div>Hello,<br><div><br></div>I'm just getting started with GlusterFS, so please forgive what's<br>probably a newbie question. I searched the mailing list archives and<br>didn't see anything about this, so I figured I'd just ask.<br><div><br></div>I'm running four VMs on a single machine to learn the ropes a little<br>bit. Each VM is set up the same way, with an OS disk and a separate<br>disk (formatted as xfs) for use as a brick.<br><div><br></div>Initially I created a dispersed volume using three bricks with<br>replication 1. That seems to work pretty well. Now I'm trying to add a<br>fourth brick to the volume, but am receiving an error when I try:<br><div><br></div>root@gluster1:~# gluster volume add-brick test1 gluster4:/export/gfs/brick<br>volume add-brick: failed: Incorrect number of bricks supplied 1 with count 3<br><div><br></div>Have I misunderstood how dispersed volumes work? I was under the<br>impression (from the documentation at<br>https://docs.gluster.org/en/latest/Administrator%20Guide/Managing%20Volumes/#expanding-volumes)<br>that bricks could be added to dispersed volumes so long as they were<br>added N at a time, where N is the replication value. This error<br>message makes it sound like I need to add three bricks at once<br>instead.<br><div><br></div>Is it possible to expand dispersed volumes like this? Or would I be<br>better off doing this with a "regular" replicated volume? I'm<br>interested in using dispersed volumes because of the space savings,<br>but I'm a bit confused about how expansion works for them.<br><div><br></div>Thanks for you help!<br>________<br><div><br></div>Community Meeting Calendar:<br><div><br></div>APAC Schedule -<br>Every 2nd and 4th Tuesday at 11:30 AM IST<br>Bridge: https://bluejeans.com/118564314<br><div><br></div>NA/EMEA Schedule -<br>Every 1st and 3rd Tuesday at 01:00 PM EDT<br>Bridge: https://bluejeans.com/118564314<br><div><br></div>Gluster-users mailing list<br>Gluster-users@gluster.org<br>https://lists.gluster.org/mailman/listinfo/gluster-users<br></div><div><br></div></div></body></html>