Bug 1464789

Summary:	Enable gluster based hyperconverged installation with only 1 replica for testing / small setups
Product:	Red Hat Enterprise Virtualization Manager	Reporter:	Joachim Schröder <jschrode>
Component:	cockpit-ovirt	Assignee:	Ryan Barry <rbarry>
Status:	CLOSED WONTFIX	QA Contact:	Virtualization Bugs <virt-bugs>
Severity:	medium	Docs Contact:
Priority:	unspecified
Version:	unspecified	CC:	dfediuck
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Last Closed:	2017-06-26 09:21:11 UTC	Type:	Bug
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oVirt Team:	Gluster	RHEL 7.3 requirements from Atomic Host:
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Description Joachim Schröder 2017-06-25 19:40:50 UTC

Description of problem:
In case one wants to create a gluster based hyperconverged RHV setup but is limited to only 1 host, the installation will fail as there currently is a hard coded requirement of 3 replicas. 
This should be still the default but changeable by the user who explicitely wants to start with a 1 hypervisor setup but maybe later extend to a 2 or 3 node setup.

Version-Release number of selected component (if applicable):


How reproducible:
Install RHV-H with underlying hyperconverged glusterfs.

Actual results:
Installation will not continue without specifying at least 3 hosts for gluster.

Expected results:
A warning like "this is not recommended and not supported" if only one host is specified for glusterfs, but still continues with setting up glusterfs.

Additional info:

Comment 1 Yaniv Kaul 2017-06-26 09:21:11 UTC

If you want to test, using ovirt-system-test (http://ovirt-system-tests.readthedocs.io/en/latest/index.html) . It provides a great-all-in-one, while using replica 3 as needed. I can run it on a 12GB RAM host.