Re: [Cluster-devel] SCTP versus OpenAIS/corosync time-outs

2009-11-04 Thread Lars Marowsky-Bree
On 2009-11-02T08:41:43, Christine Caulfield ccaul...@redhat.com wrote: No concurrently active transmission (rrp_mode active) - I wonder if it is possible to put SCTP into such an mode, or, vice-versa, if this means the DLM might be better off directly opening several TCP connections on its

Re: [Cluster-devel] SCTP versus OpenAIS/corosync time-outs

2009-11-02 Thread Christine Caulfield
On 31/10/09 00:20, Lars Marowsky-Bree wrote: Hi all, David, I'm contemplating SCTP versus OpenAIS/corosync. Is dlm_controld(.pcmk) pro-actively informed if a single ring/link goes down, as to trigger faster SCTP recovery - or is it left for SCTP to time out on its own and proceed? Corosync

Re: [Cluster-devel] SCTP versus OpenAIS/corosync time-outs

2009-11-02 Thread David Teigland
On Mon, Nov 02, 2009 at 08:41:43AM +, Christine Caulfield wrote: To be honest, RRP DLM/SCTP is not well tested or used. There are probably lots of things that could be done to improve it. In particular the failover aspect of it (the most important part of course) has probably not been

[Cluster-devel] SCTP versus OpenAIS/corosync time-outs

2009-10-30 Thread Lars Marowsky-Bree
Hi all, David, I'm contemplating SCTP versus OpenAIS/corosync. Is dlm_controld(.pcmk) pro-actively informed if a single ring/link goes down, as to trigger faster SCTP recovery - or is it left for SCTP to time out on its own and proceed? If the latter - is there a way to auto-tune the SCTP