Thanks for the quick reply! So it sounds like I did misunderstand how disperse volumes work, and I can't add bricks one at a time (I have to add bricks in groups of N, where N is the original disperse count). Sorry for mixing up the terminology in explaining my question. I guess the better question is "how do I add storage capacity to an existing disperse volume?" Here's the output from the two commands you asked for, btw. root@gluster1:~# gluster volume info test1 Volume Name: test1 Type: Disperse Volume ID: 73ed8639-4ace-46c8-9807-874aba8a33c8 Status: Started Snapshot Count: 0 Number of Bricks: 1 x (2 + 1) = 3 Transport-type: tcp Bricks: Brick1: gluster1:/export/gfs/brick Brick2: gluster2:/export/gfs/brick Brick3: gluster3:/export/gfs/brick Options Reconfigured: nfs.disable: on transport.address-family: inet root@gluster1:~# gluster volume status test1 Status of volume: test1 Gluster process TCP Port RDMA Port Online Pid ------------------------------------------------------------------------------ Brick gluster1:/export/gfs/brick 49152 0 Y 601 Brick gluster2:/export/gfs/brick 49152 0 Y 664 Brick gluster3:/export/gfs/brick 49152 0 Y 662 Self-heal Daemon on localhost N/A N/A Y 6992 Self-heal Daemon on gluster4 N/A N/A Y 10981 Self-heal Daemon on gluster3 N/A N/A Y 6986 Self-heal Daemon on gluster2 N/A N/A Y 7010 Task Status of Volume test1 ------------------------------------------------------------------------------ There are no active volume tasks On Wed, Sep 25, 2019 at 9:31 AM Ashish Pandey <aspandey@xxxxxxxxxx> wrote: > > Hi William, > > If you want to increase capacity of a disperse volume, you have to add bricks to your existing disperse volume. > The number of bricks you add should be in multiple of the existing configuration. > > For example: > > If you have created a disperse volume like this - > > gluster volume create myvol disperse 3 redundancy 1 host1:brick1 host2:brick2 host3:brick3 > > This is a 1 x (2+1) disperse volume. > Now if you want to add some bricks to this volume, you have to do following - > > gluster volume add-brick myvol host1:brick11 host2:brick22 host3:brick33 > which will add 3 bricks in the form of one new sub volume - 2 x (2+1) > > or you can do this > > gluster volume add-brick myvol host1:brick11 host2:brick22 host3:brick33 host1:brick111 host2:brick222 host3:brick333 > which will add 6 bricks in the form of two new sub volume - 3 x (2+1) > > 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. > > In these type of queries, it would be better to provide information about volumes which would help us to understand your questions. > > gluster v <volume name> info > gluster v <volume name> status > > --- > Ashish > > ________________________________ > From: "William Ferrell" <willfe@xxxxxxxxx> > To: gluster-users@xxxxxxxxxxx > Sent: Wednesday, September 25, 2019 6:02:37 PM > Subject: Add single brick to dispersed volume? > > Hello, > > I'm just getting started with GlusterFS, so please forgive what's > probably a newbie question. I searched the mailing list archives and > didn't see anything about this, so I figured I'd just ask. > > I'm running four VMs on a single machine to learn the ropes a little > bit. Each VM is set up the same way, with an OS disk and a separate > disk (formatted as xfs) for use as a brick. > > Initially I created a dispersed volume using three bricks with > replication 1. That seems to work pretty well. Now I'm trying to add a > fourth brick to the volume, but am receiving an error when I try: > > root@gluster1:~# gluster volume add-brick test1 gluster4:/export/gfs/brick > volume add-brick: failed: Incorrect number of bricks supplied 1 with count 3 > > Have I misunderstood how dispersed volumes work? I was under the > impression (from the documentation at > https://docs.gluster.org/en/latest/Administrator%20Guide/Managing%20Volumes/#expanding-volumes) > that bricks could be added to dispersed volumes so long as they were > added N at a time, where N is the replication value. This error > message makes it sound like I need to add three bricks at once > instead. > > Is it possible to expand dispersed volumes like this? Or would I be > better off doing this with a "regular" replicated volume? I'm > interested in using dispersed volumes because of the space savings, > but I'm a bit confused about how expansion works for them. > > Thanks for you help! > ________ > > Community Meeting Calendar: > > APAC Schedule - > Every 2nd and 4th Tuesday at 11:30 AM IST > Bridge: https://bluejeans.com/118564314 > > NA/EMEA Schedule - > Every 1st and 3rd Tuesday at 01:00 PM EDT > Bridge: https://bluejeans.com/118564314 > > Gluster-users mailing list > Gluster-users@xxxxxxxxxxx > https://lists.gluster.org/mailman/listinfo/gluster-users > -- William W. Ferrell Software Engineer http://willfe.com/ -- willfe@xxxxxxxxx ________ Community Meeting Calendar: APAC Schedule - Every 2nd and 4th Tuesday at 11:30 AM IST Bridge: https://bluejeans.com/118564314 NA/EMEA Schedule - Every 1st and 3rd Tuesday at 01:00 PM EDT Bridge: https://bluejeans.com/118564314 Gluster-users mailing list Gluster-users@xxxxxxxxxxx https://lists.gluster.org/mailman/listinfo/gluster-users
