Re: [DRBD-user] New storage: avoid split brains

2016-10-20 Thread Gandalf Corvotempesta
Il 18 ott 2016 8:20 PM, "Lars Ellenberg" ha scritto: > > There is no "write quorum" yet, but I'm working on that. > Any ETA about this? > Data divergence is still very much possible. > > The DRBD 8.4 integration with pacemaker and fencing mechanisms > is proven to

Re: [DRBD-user] New storage: avoid split brains

2016-10-20 Thread Gandalf Corvotempesta
2016-10-20 15:14 GMT+02:00 Lars Ellenberg : > You end up with a system that will NOT experience data divergence, > unless you force it to. Ok. > But you may run into (multiple failure, mind you!) situations > where you are offline, rather than risk to go online > with

Re: [DRBD-user] New storage: avoid split brains

2016-10-20 Thread Lars Ellenberg
On Thu, Oct 20, 2016 at 09:13:18AM +0200, Gandalf Corvotempesta wrote: > Il 18 ott 2016 8:20 PM, "Lars Ellenberg" ha > scritto: > > > > There is no "write quorum" yet, but I'm working on that. > > > > Any ETA about this? > > > Data divergence is still very much

Re: [DRBD-user] Soft lockup CPU#2 stuck problems with DRBD 9 after rebooting other node

2016-10-20 Thread Jan Janicki
We are observing similar problems, running proxmox 4.3, with pve-kernel 4.4.16-65 and drbd 9.0.4-1 Three node cluster, more than 60 drbd resources all with triple replication, hosts connected with multiple bonded gigabit ethernet, network offloads disabled for eth* interfaces (rx off tx off sg