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Hi all, question… Is it useful to create gluster volume on machines with one hard disc? for example I have this: 1 physical machine with 7 nodes. Only 1 SSD per node. Now I have shared storage on the master node that is shared across all other nodes using NFS. Is it handy to create distributed gluster volume across all nodes? Keeping in mind there is only 1 SSD per node... I was thinking about creating something like this: Volume Name: sharedvolume Type: Distribute Number of Bricks: 8 Transport-type: tcp Bricks: Brick1: node0:/data/brick/shared Brick2: node1:/data/brick/shared Brick3: node2:/data/brick/shared Brick4: node3:/data/brick/shared Brick5: node4:/data/brick/shared Brick6: node5:/data/brick/shared Brick7: node6:/data/brick/shared Brick8: node7:/data/brick/shared And then share it on each node as: nodeX:/sharedvolume /storage/shared glusterfs defaults,_netdev 0 0 A little more information on the set-up: MASTER NODE (1x): /dev/sda: 480.1 GB /dev/mapper/centos_node0-root: 445.8 GB /dev/mapper/centos_node0-swap: 33.8 GB WORKER NODE (6x): /dev/sda: 240.1 GB /dev/mapper/centos_nodeX-root: 215.5 GB /dev/mapper/centos_nodeX-swap: 24.0 GB The root / needs a lot of space for /tmp. But the /storage/shared is also on the root /. It sounds dangerous to create another logical volume for the shared storage. If the /tmp is full and the /storage/shared is not using a lot of space then this extra LV is not handy. David Comeyne System Engineer |
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