[please preserve the CC when replying, thanks] Hi - We're attempting to setup a clvm (2.02.56) cluster using OpenAIS (1.1.1) and Corosync (1.1.2). We've gotten bitten hard in the past by crashes leaving DLM state around and forcing us to reboot our nodes, so we're specifically looking for a solution that doesn't involve in-kernel locking. We're also running the Pacemaker OpenAIS service, as we're hoping to use it for management of some other resources going forward. We've managed to form the OpenAIS cluster, and get clvmd running on both of our nodes. Operations using LVM succeed, so long as only one operation runs at a time. However, if we attempt to run two operations (say, one lvcreate on each host) at a time, they both hang, and both clvmd processes appear to deadlock. When they deadlock, it doesn't appear to affect the other clustering processes - both corosync and pacemaker still report a fully formed cluster, so it seems the issue is localized to clvmd. I've looked at logs from corosync and pacemaker, and I've straced various processes, but I don't want to blast a bunch of useless information at the list. What information can I provide to make it easier to debug and fix this deadlock? Thanks, - Evan -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster
