Re: [ClusterLabs] required nodes for quorum policy

2015-11-19 Thread Radoslaw Garbacz
Thank you Christine and Andrei, I took a look at the corosync quorum policy configuration options, and actually I would need a more conservative approach, i.e. to consider quorum only if all the nodes are present - any node loss is a quorum loss event for me. At present I check it in an agent,

Re: [ClusterLabs] required nodes for quorum policy

2015-11-10 Thread Christine Caulfield
On 09/11/15 22:20, Radoslaw Garbacz wrote: > Hi, > > I have a question regarding the policy to check for cluster quorum for > corosync+pacemaker. > > As far as I know at present it is always (excpected_votes)/2 + 1. Seems > like "qdiskd" has an option to change it, but it is not clear to me if >

[ClusterLabs] required nodes for quorum policy

2015-11-09 Thread Radoslaw Garbacz
Hi, I have a question regarding the policy to check for cluster quorum for corosync+pacemaker. As far as I know at present it is always (excpected_votes)/2 + 1. Seems like "qdiskd" has an option to change it, but it is not clear to me if corosync 2.x supports different quorum device. What are

Re: [ClusterLabs] required nodes for quorum policy

2015-11-09 Thread Andrei Borzenkov
On Tue, Nov 10, 2015 at 1:20 AM, Radoslaw Garbacz wrote: > Hi, > > I have a question regarding the policy to check for cluster quorum for > corosync+pacemaker. > > As far as I know at present it is always (excpected_votes)/2 + 1. Seems like > "qdiskd" has an