<div>Here's the test I've done :</div> <div> </div> <div>- Cluster formed of 2 nodes A and B, RHEL5.3 X86_64</div> <div>- dlm used as lock_manager </div> <div>- - </div> <div> Hello, I've been playing on RHEL 5.3 with CLVM and exclusive activation but the results I'm getting are not what I'm expecting. - My cluster is a freshly 2 nodes (node1 and node2) installed cluster with the packages shipped by RHEL 5.3 X86_64. - LVM locking type = 3 - a San LUN (/dev/mpath/mpath2) visible from both nodes - dlm used as lock_manager Everything starts normally from cman to clvmd. Below what I'm doing On node1: pvcreate /dev/mpath/mpath2 vgcreate -c n vg11 /dev/mpath/mpath2 ! nothing in /debug/dlm/clvmd_locks on both nodes vgchange -a n vg11 ! nothing in /debug/dlm/clvmd_locks on both nodes vgchange -c y vg11 ! nothing in /debug/dlm/clvmd_locks on both nodes, vg seen on both nodes as clustered. vgchange -a ey vg11 ! nothing in /debug/dlm/clvmd_locks on both nodes lvcreate -n lvol1 -L 6G /dev/vg11 On node1 cat /debug/dlm/clvmd_locks gives: 6f0001 2 3da0001 2204 0 1 10001 2 1 -1 0 0 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" 38a0001 0 0 434 0 1 1 2 1 -1 0 0 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" On node2: 3da0001 1 6f0001 2204 0 1 1 2 1 -1 0 1 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" Is there something I'm doing wrong or misunderstand? I understand that node1 (which actually activated exclusively the vg) sees a lock on /dev/vg11/lvol1 (uuid corresponding to it) from node id 2 wich is node2 plus a lock from node id 0 (which seems to be the quorun disk id which is not configured in my case). Plus, node2 seems to see the right lock from node1. I go on: on both nodes, lvdisplay -v /dev/vg11/lvol1 gives: ... LV UUID r3Xrp1-prEG-ceCk-A2dh-SA2E-NWoc-unEfdf LV Write Access read/write LV Status available ... Shouldn't it be seen NOT available on node2 ? Now, on node2: vgchange -a y vg11 : 1 logical volume(s) in volume group "vg11" now active <-- vg was supposed to be held exlusively by node1 cat /debug/dlm/clvmd_locks gives: 3da0001 1 6f0001 2204 0 1 1 2 1 -1 0 1 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" on node1: 6f0001 2 3da0001 2204 0 1 10001 2 1 -1 0 0 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" 38a0001 0 0 434 0 1 1 2 1 -1 0 0 64 "iZ8vgn7nBm05aMSo5cfpy63rflTqL2ryr3Xrp1prEGceCkA2dhSA2ENWocunEfdf" I may be missing something in my procedure that makes it do everything except what I'm expecting. Any ideas ?</div>