We are evolving a document to answer this question, the wip document is at https://github.com/karthik-us/Let us know if you still have doubts after reading this.glusterdocs/blob/ 1c97001d482923c2e6a9c566b3faf8 9d0c32b269/Administrator% 20Guide/Split%20brain%20and% 20ways%20to%20deal%20with% 20it.md On Tue, Apr 18, 2017 at 8:41 AM, Mahdi Adnan <mahdi.adnan@xxxxxxxxxxx> wrote:Hi,
We have a replica 2 volume and we have issue with setting proper quorum.
The volumes used as datastore for vmware/ovirt, the current settings for the quorum are:
cluster.quorum-type: auto
cluster.server-quorum-type: server
cluster.server-quorum-ratio: 51%
Losing the first node which hosting the first bricks will take the storage domain in ovirt offline but in the FUSE mount point works fine "read/write"
Losing the second node or any other node that hosts only the second bricks of the replication will not affect ovirt storage domain i.e 2nd or 4th ndoes.
As i understand, losing the first brick in replica 2 volumes will render the volume to read only, but how FUSE mount works in read write ?
Also, can we add an arbiter node to the current replica 2 volume without losing data ? if yes, does the re-balance bug "Bug 1440635" affect this process ?
And what happen if we set "cluster.quorum-type: none" and the first node goes offline ?
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