I have a two node cluster on RHEL4. It was all Update 4, but Red Hat suggested I update the problem node to U5, so now it is mixed. The problem: We had a SAN issue last week that took 3 of the 15 LUNs offline. The SAN problem was been fixed, so I tried to rescan the LUNs, and still could not see the LUNs. I restarted one node, and ever since then, it would fail when trying to join the cluster. I disabled the cluster services at boot, and try them manually. Every time I get to CLVMD, it hangs forever. Sometimes I can CTRL-C to break out, sometimes no. There are no relevant messages in /var/log/messages. I have worked with Red Hat and the last thing they suggested was to upgrade the node to U5. I did Tuesday, and it still hangs. I am afraid to take down the other node, because if it does the same thing, I am going to have major problems. I have also noticed that running lvdisplay, vgdisplay and pvdisplay hang. I am sure it is related. I know dlm and module is loaded. lock_dlm 47220 0 lock_harness 7216 2 gfs,lock_dlm dlm 134404 3 lock_dlm cman 139552 11 gfs,lock_dlm,dlm Any thoughts? Danny ##################################### This message is for the named person's use only. It may contain confidential, proprietary, or legally privileged information. No confidentiality or privilege is waived or lost by any mistransmission. If you receive this message in error, please immediately delete it and all copies of it from your system, destroy any hard copies of it, and notify the sender. You must not, directly or indirectly, use, disclose, distribute, print, or copy any part of this message if you are not the intended recipient. Health First reserves the right to monitor all e-mail communications through its networks. Any views or opinions expressed in this message are solely those of the individual sender, except (1) where the message states such views or opinions are on behalf of a particular entity; and (2) the sender is authorized by the entity to give such views or opinions. ##################################### -- Linux-cluster mailing list Linux-cluster@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/linux-cluster