ctdb relock file issues with glusterfs
ronniesahlberg at gmail.com
Mon Oct 15 14:16:22 MDT 2012
At least for larger clusters, say 45 or more nodes
we could implement something like a
"as long as floor(n/2)+1 nodes are connected"
that would make it safe to use without a reclock file on clusters with
5 or more nodes.
On Tue, Oct 16, 2012 at 6:30 AM, Martin Schwenke <martin at meltin.net> wrote:
> Hi Morten,
> On Mon, 15 Oct 2012 15:59:41 +0000, Morten Bøhmer
> <Morten.Bohmer at pilaro.no> wrote:
>> For the heck of it I installed a couple of Centos virtual servers and configure ctdb+glusterfs+xfs+samba, got it working, but without relock.
>> Not sure how important it is, but I guess time will show :)
> As others have pointed out, the reclock file is crucial unless you
> have some other way of avoiding a split brain. You won't know you need
> it until you get a split brain and something gets badly corrupted.
> Additionally, as Ronnie mentioned, if the reclock file isn't working
> then there's something wrong with your locking, so you have more than a
> reclock problem...
> peace & happiness,
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