On 8/29/11 4:42 PM, Digimer wrote: > On 08/29/2011 03:36 PM, William Seligman wrote: >> A general question: I have a Corosync+Pacemaker with DRBD setup on Linux; >> I'll >> give the details if it's relevant. Corosync+Pacemaker controls DRBD start, >> stop, >> and promotion. I've implemented fencing via STONITH as Corosync resources. >> >> I have not put fencing in the drbd.conf file; I was under the impression that >> Corosync+Pacemaker would take of STONITHing a node if there's a DRBD >> problem. Is >> this correct? Or should I have fencing/STONITH configured in both Corosync >> and >> drbd.conf? >> >> Does the answer change between a primary/secondary versus dual-primary setup? > > You still want to configure fencing, but you can use the > 'crm-fence-peer.sh' handler. Using this with 'resource-and-stonith' will > tell DRBD to block I/O until the fence succeeds, preventing it from > going dual-primary (even if just for the brief moment between fault and > fence).
I may be dense, but I find the answer ambiguous; perhaps I didn't ask the question the right way. Let me ask in a differen way: If I have fencing set up in corosync, and corosync controls drbd, do I also need fencing in drbd.conf? -- Bill Seligman | Phone: (914) 591-2823 Nevis Labs, Columbia Univ | mailto://selig...@nevis.columbia.edu PO Box 137 | Irvington NY 10533 USA | http://www.nevis.columbia.edu/~seligman/
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