Re: Can't create volume. Can't delete volume. Volume does not exist. Can't create volume.

[Ernie Dunbar <maillist@xxxxxxxxxxxxx>]

I nuked the entire partition with mkfs, just to be *sure*, and I still get the error message:

volume create: gv0: failed: /brick1/gv0 is already part of a volume

Clearly, there's some bit of data being kept somewhere else besides in /brick1?

On 2015-02-11 01:03, Kaushal M wrote:

This happens because of 2 things,

1. GlusterFS writes an extended attribute containing the volume-id to every brick directory when a volume is created. This is done to prevent data being written to the root partition, in case the partition containing the brick wasn't mounted for any reason.

2. Deleting a GlusterFS volume does not remove any data in the brick directories and the brick directories themselves. We leave the decision of cleaning up the data to the user. The extended attribute is also not removed, so that an unused brick is not inadvertently added to another volume as it could lead to losing existing data.

 

So if you want to reuse a brick, you need to clean it up and recreate the brick directory.

On Wed, Feb 11, 2015 at 4:38 AM, Ernie Dunbar <maillist@xxxxxxxxxxxxx> wrote:

I'm just going to paste this here to see if it drives you as mad as it does me.

I'm trying to re-create a new volume in gluster. The old volume is empty and can be removed. And besides that, this is just an experimental server that isn't in production just yet. Who cares. I just want to start over again because it's not working.

root@nfs1:/home/ernied# gluster
gluster> vol create gv0 replica 2 nfs1:/brick1/gv0 nfs2:/brick1/gv0
volume create: gv0: failed: /brick1/gv0 is already part of a volume
gluster> vol in
No volumes present
gluster> root@nfs1:/home/ernied# ^C
root@nfs1:/home/ernied# rm -r /brick1/gv0
root@nfs1:/home/ernied# gluster
gluster> vol create gv0 replica 2 nfs1:/brick1/gv0 nfs2:/brick1/gv0
volume create: gv0: failed: Host nfs2 is not in 'Peer in Cluster' state
gluster> peer probe nfs2
peer probe: success. Host nfs2 port 24007 already in peer list
gluster> volume list
No volumes present in cluster
gluster> volume delete gv0
Deleting volume will erase all information about the volume. Do you want to continue? (y/n) y
volume delete: gv0: failed: Volume gv0 does not exist
gluster> vol create gv0 replica 2 nfs1:/brick1/gv0 nfs2:/brick1/gv0
volume create: gv0: failed: /brick1/gv0 is already part of a volume
gluster> vol create evil replica 2 nfs1:/brick1/gv0 nfs2:/brick1/gv0
volume create: evil: failed: /brick1/gv0 is already part of a volume
gluster>

 

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