Hello Cedric Are you using gfs or gfs2? if you are using gfs i recommend to use gfs2 <div class="gmail_quote">2012/6/3 Cedric Kimaru <<a href="mailto:rhel_cluster@ckimaru.com" target="_blank">rhel_cluster@ckimaru.com</a>> <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Fellow Cluster Compatriots, I'm looking for some guidance here. Whenever my rhel 5.7 cluster get's into "LEAVE_START_WAIT" on on a given iscsi volume, the following occurs: <ol><li>I can't r/w io to the volume.</li><li>Can't unmount it, from any node.</li><li>In flight/pending IO's are impossible to determine or kill since lsof on the mount fails. Basically all IO operations stall/fail. </li></ol>So my questions are:<ol><li>What does the output from group_tool -v really indicate, "00030005 LEAVE_START_WAIT 12 c000b0002 1" ? Man on group_tool doesn't list these fields. </li><li>Does anyone have a list of what these fields represent ?</li><li>Corrective actions. How do i get out of this state without rebooting the entire cluster ?</li><li>Is it possible to determine the offending node ? </li></ol>thanks, -Cedric //misc output root@bl13-node13:~# clustat Cluster Status for cluster3 @ Sat Jun 2 20:47:08 2012 Member Status: Quorate Member Name ID Status ------ ---- ---- ------ bl01-node01 1 Online, rgmanager bl04-node04 4 Online, rgmanager bl05-node05 5 Online, rgmanager bl06-node06 6 Online, rgmanager bl07-node07 7 Online, rgmanager bl08-node08 8 Online, rgmanager bl09-node09 9 Online, rgmanager bl10-node10 10 Online, rgmanager bl11-node11 11 Online, rgmanager bl12-node12 12 Online, rgmanager bl13-node13 13 Online, Local, rgmanager bl14-node14 14 Online, rgmanager bl15-node15 15 Online, rgmanager Service Name Owner (Last) State ------- ---- ----- ------ ----- service:httpd bl05-node05 started service:nfs_disk2 bl08-node08 started root@bl13-node13:~# group_tool -v type level name id state node id local_done fence 0 default 0001000d none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 clvmd 0001000c none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 cluster3_disk1 00020005 none [4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 cluster3_disk2 00040005 none [4 5 6 7 8 9 10 11 13 14 15] dlm 1 cluster3_disk7 00060005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 cluster3_disk8 00080005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 cluster3_disk9 000a0005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 disk10 000c0005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 rgmanager 0001000a none [1 4 5 6 7 8 9 10 11 12 13 14 15] dlm 1 cluster3_disk3 00020001 none [1 5 6 7 8 9 10 11 12 13] dlm 1 cluster3_disk6 00020008 none [1 4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 cluster3_disk1 00010005 none [4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 cluster3_disk2 00030005 LEAVE_START_WAIT 12 c000b0002 1 [4 5 6 7 8 9 10 11 13 14 15] gfs 2 cluster3_disk7 00050005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 cluster3_disk8 00070005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 cluster3_disk9 00090005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 disk10 000b0005 none [1 4 5 6 7 8 9 10 11 12 13 14 15] gfs 2 cluster3_disk3 00010001 none [1 5 6 7 8 9 10 11 12 13] gfs 2 cluster3_disk6 00010008 none [1 4 5 6 7 8 9 10 11 12 13 14 15] root@bl13-node13:~# gfs2_tool list 253:15 cluster3:cluster3_disk6 253:16 cluster3:cluster3_disk3 253:18 cluster3:disk10 253:17 cluster3:cluster3_disk9 253:19 cluster3:cluster3_disk8 253:21 cluster3:cluster3_disk7 253:22 cluster3:cluster3_disk2 253:23 cluster3:cluster3_disk1 root@bl13-node13:~# lvs Logging initialised at Sat Jun 2 20:50:03 2012 Set umask from 0022 to 0077 Finding all logical volumes LV VG Attr LSize Origin Snap% Move Log Copy% Convert lv_cluster3_Disk7 vg_Cluster3_Disk7 -wi-ao 3.00T lv_cluster3_Disk9 vg_Cluster3_Disk9 -wi-ao 200.01G lv_Cluster3_libvert vg_Cluster3_libvert -wi-a- 100.00G lv_cluster3_disk1 vg_cluster3_disk1 -wi-ao 100.00G lv_cluster3_disk10 vg_cluster3_disk10 -wi-ao 15.00T lv_cluster3_disk2 vg_cluster3_disk2 -wi-ao 220.00G lv_cluster3_disk3 vg_cluster3_disk3 -wi-ao 330.00G lv_cluster3_disk4_1T-kvm-thin vg_cluster3_disk4_1T-kvm-thin -wi-a- 1.00T lv_cluster3_disk5 vg_cluster3_disk5 -wi-a- 555.00G lv_cluster3_disk6 vg_cluster3_disk6 -wi-ao 2.00T lv_cluster3_disk8 vg_cluster3_disk8 -wi-ao 2.00T -- Linux-cluster mailing list <a href="mailto:Linux-cluster@redhat.com">Linux-cluster@redhat.com</a> <a href="https://www.redhat.com/mailman/listinfo/linux-cluster" target="_blank">https://www.redhat.com/mailman/listinfo/linux-cluster</a> </blockquote></div> -- esta es mi vida e me la vivo hasta que dios quiera