Re: [ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-13 Thread Eric Ren
Hi, On 10/13/2016 04:27 PM, Ulrich Windl wrote: So I'm wondering why it takes so long to finish the fencing process? As I wrote: Using SBD this is paranoia (as fencing doesn't report back a status like "completed" or "failed". Actually the fencing only needs a few seconds, but the timeout is

Re: [ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-13 Thread emmanuel segura
If you want to reduce the multipath switching time, when one controller goes down https://www.redhat.com/archives/dm-devel/2009-April/msg00266.html 2016-10-13 10:27 GMT+02:00 Ulrich Windl : Eric Ren schrieb am 13.10.2016 um 09:31 in Nachricht > : >> Hi, >> >> On 10/10/2016 10:46 PM, Ulrich W

[ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-13 Thread Ulrich Windl
>>> Eric Ren schrieb am 13.10.2016 um 09:31 in Nachricht : > Hi, > > On 10/10/2016 10:46 PM, Ulrich Windl wrote: >> Hi! >> >> I observed an interesting thing: In a three node cluster (SLES11 SP4) with > cLVM and OCFS2 on top, one node was fenced as the OCFS2 filesystem was > somehow busy on unm

Re: [ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-13 Thread Eric Ren
Hi, On 10/11/2016 02:18 PM, Ulrich Windl wrote: { emmanuel segura schrieb am 10.10.2016 um 16:49 in Nachricht : Node h01 (old DC) was fenced at Oct 10 10:06:33 Node h01 went down around Oct 10 10:06:37. DLM noticed that on node h05: Oct 10 10:06:44 h05 cluster-dlm[12063]: dlm_process_no

Re: [ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-10 Thread Andrei Borzenkov
On Tue, Oct 11, 2016 at 9:18 AM, Ulrich Windl wrote: > > My point is this: For a resource that can only exclusively run on one node, > it's important that the other node is down before taking action. But for cLVM > and OCFS2 the resources can run concurrently on each node, Both require coordina

[ClusterLabs] Antw: Re: OCFS2 on cLVM with node waiting for fencing timeout

2016-10-10 Thread Ulrich Windl
{ emmanuel segura schrieb am 10.10.2016 um 16:49 in > Nachricht > : > Node h01 (old DC) was fenced at Oct 10 10:06:33 Node h01 went down around Oct 10 10:06:37. DLM noticed that on node h05: Oct 10 10:06:44 h05 cluster-dlm[12063]: dlm_process_node: Removed inactive node 739512321: born-on=