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<title>2 node OCFS2 clusters</title>
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<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>How about adding a third [FAKE] node? If this is a feasible
workaround, then only the troublesome node should fence itself.<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Best regards,<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'>Karim Alkhayer<o:p></o:p></span></p>
<p class=MsoNormal><span style='font-size:10.0pt;font-family:"Arial","sans-serif";
color:#002060'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> ocfs2-users-bounces@oss.oracle.com
[mailto:ocfs2-users-bounces@oss.oracle.com] <b>On Behalf Of </b>Thompson, Mark<br>
<b>Sent:</b> Tuesday, November 17, 2009 2:27 PM<br>
<b>To:</b> Srinivas Eeda<br>
<b>Cc:</b> ocfs2-users@oss.oracle.com<br>
<b>Subject:</b> Re: [Ocfs2-users] 2 node OCFS2 clusters<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><o:p> </o:p></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I have done some more tests today, and I observed the following:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test 1:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - ifdown eth2<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - OCFS2 filesystem stalls on both nodes<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 - Decides to reboot<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - Resumes OCFS2 service (while still off the network)
OCFS2 filesystem back online<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 - Cannot re-join cluster as node 0 is off the network and
has the fs lock (Transport endpoint error)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - ifup eth2<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 - Re-joins the clusters and re-mounts OCFS2 filesystem.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test 2:<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 - ifdown eth2<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - OCFS2 filesystem stalls on both nodes<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 - Decides to reboot<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 0 - Resumes OCFS2 service, OCFS2 filesystem back online<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>node 1 – Boots up, re-joins cluster and re-mounts OCFS2
filesystem.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Is this the expected behaviour? And if it is, is there anything
we can do avoid the loss of the OCFS2 filesystems?<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Here’s the messages file outputs.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test 1 - Node 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:00:26 my_node0 kernel: ocfs2: Unmounting device
(253,9) on (node 0)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:21 my_node0 modprobe: FATAL: Module ocfs2_stackglue
not found.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:21 my_node0 kernel: OCFS2 Node Manager 1.4.4 Tue
Sep 8 11:56:46 PDT 2009 (build 18a3a72794aaca6c0334f456bca873cd)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:21 my_node0 kernel: OCFS2 DLM 1.4.4 Tue Sep 8
11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:21 my_node0 kernel: OCFS2 DLMFS 1.4.4 Tue Sep
8 11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:21 my_node0 kernel: OCFS2 User DLM kernel interface
loaded<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:46 my_node0 kernel: OCFS2 1.4.4 Tue Sep 8
11:56:43 PDT 2009 (build 3a5bffa75b910d5bcdd5c607c4394b1e)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:46 my_node0 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:46 my_node0 kernel: ocfs2: Mounting device (253,9)
on (node 0, slot 0) with ordered data mode.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:59 my_node0 kernel: ocfs2_dlm: Node 1 joins domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:59 my_node0 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:51 my_node0 kernel:
(15,1):dlm_do_master_request:1334 ERROR: link to 1 went down!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:51 my_node0 kernel:
(15,1):dlm_get_lock_resource:917 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:34 my_node0 kernel:
(22108,1):ocfs2_dlm_eviction_cb:98 device (253,9): dlm has evicted node 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:34 my_node0 kernel:
(29443,1):dlm_get_lock_resource:844
21751145F96E45649324C9EEF5485248:M000000000000000000001f96e7b609: at least one
node (1) to recover before lock mastery can begin<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:35 my_node0 kernel:
(29443,1):dlm_get_lock_resource:898
21751145F96E45649324C9EEF5485248:M000000000000000000001f96e7b609: at least one
node (1) to recover before lock mastery can begin<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:36 my_node0 kernel:
(15,1):dlm_restart_lock_mastery:1223 ERROR: node down! 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:36 my_node0 kernel:
(15,1):dlm_wait_for_lock_mastery:1040 ERROR: status = -11<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:36 my_node0 kernel: (22167,0):dlm_get_lock_resource:844
21751145F96E45649324C9EEF5485248:$RECOVERY: at least one node (1) to recover
before lock mastery can begin<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:36 my_node0 kernel:
(22167,0):dlm_get_lock_resource:878 21751145F96E45649324C9EEF5485248: recovery
map is not empty, but must master $RECOVERY lock now<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:36 my_node0 kernel: (22167,0):dlm_do_recovery:524
(22167) Node 0 is the Recovery Master for the Dead Node 1 for Domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:09:46 my_node0 kernel: (29443,1):ocfs2_replay_journal:1183
Recovering node 1 from slot 1 on device (253,9)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:27 my_node0 kernel: ocfs2_dlm: Node 1 joins domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:27 my_node0 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test 1 – Node 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:00:26 my_node1 kernel: ocfs2_dlm: Node 0 leaves domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:00:26 my_node1 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:00:46 my_node1 kernel: ocfs2: Unmounting device
(253,9) on (node 1)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:30 my_node1 modprobe: FATAL: Module ocfs2_stackglue
not found.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:30 my_node1 kernel: OCFS2 Node Manager 1.4.4 Tue
Sep 8 11:56:46 PDT 2009 (build 18a3a72794aaca6c0334f456bca873cd)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:30 my_node1 kernel: OCFS2 DLM 1.4.4 Tue Sep 8
11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:30 my_node1 kernel: OCFS2 DLMFS 1.4.4 Tue Sep
8 11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:30 my_node1 kernel: OCFS2 User DLM kernel interface
loaded<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:59 my_node1 kernel: OCFS2 1.4.4 Tue Sep 8
11:56:43 PDT 2009 (build 3a5bffa75b910d5bcdd5c607c4394b1e)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:59 my_node1 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:02:59 my_node1 kernel: ocfs2: Mounting device (253,9)
on (node 1, slot 1) with ordered data mode.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:27 my_node1 kernel:
(7351,3):dlm_send_remote_convert_request:395 ERROR: status = -112<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:27 my_node1 kernel:
(7351,3):dlm_wait_for_node_death:370 21751145F96E45649324C9EEF5485248: waiting
5000ms for notification of death of node 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:57 my_node1 kernel:
(7351,3):dlm_send_remote_convert_request:395 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:07:57 my_node1 kernel:
(7351,3):dlm_wait_for_node_death:370 21751145F96E45649324C9EEF5485248: waiting
5000ms for notification of death of node 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:08:27 my_node1 kernel:
(15,1):dlm_do_master_request:1334 ERROR: link to 0 went down!<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:08:27 my_node1 kernel: (7351,3):dlm_send_remote_convert_request:395
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:08:27 my_node1 kernel:
(7351,3):dlm_wait_for_node_death:370 21751145F96E45649324C9EEF5485248: waiting
5000ms for notification of death of node 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:08:27 my_node1 kernel: (15,1):dlm_get_lock_resource:917
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:31 my_node1 modprobe: FATAL: Module ocfs2_stackglue
not found.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:32 my_node1 kernel: OCFS2 Node Manager 1.4.4 Tue
Sep 8 11:56:46 PDT 2009 (build 18a3a72794aaca6c0334f456bca873cd)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:32 my_node1 kernel: OCFS2 DLM 1.4.4 Tue Sep 8
11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:32 my_node1 kernel: OCFS2 DLMFS 1.4.4 Tue Sep
8 11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:32 my_node1 kernel: OCFS2 User DLM kernel interface
loaded<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:11:40 my_node1 kernel: OCFS2 1.4.4 Tue Sep 8
11:56:43 PDT 2009 (build 3a5bffa75b910d5bcdd5c607c4394b1e)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel: (6282,0):dlm_request_join:1036
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel:
(6282,0):dlm_try_to_join_domain:1210 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel: (6282,0):dlm_join_domain:1488
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel:
(6282,0):dlm_register_domain:1754 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel: (6282,0):ocfs2_dlm_init:2723
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel:
(6282,0):ocfs2_mount_volume:1437 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:06 my_node1 kernel: ocfs2: Unmounting device
(253,9) on (node 1)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:27 my_node1 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:12:27 my_node1 kernel: ocfs2: Mounting device (253,9)
on (node 1, slot 1) with ordered data mode.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test 2 – Node 0<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:16:37 my_node0 kernel:
(22166,3):dlm_send_proxy_ast_msg:458 ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:16:37 my_node0 kernel: (22166,3):dlm_flush_asts:600
ERROR: status = -107<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:17:35 my_node0 kernel:
(22108,1):ocfs2_dlm_eviction_cb:98 device (253,9): dlm has evicted node 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:17:35 my_node0 kernel:
(6515,1):ocfs2_replay_journal:1183 Recovering node 1 from slot 1 on device
(253,9)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:17:36 my_node0 kernel:
(22167,0):dlm_get_lock_resource:844 21751145F96E45649324C9EEF5485248:$RECOVERY:
at least one node (1) to recover before lock mastery can begin<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:17:36 my_node0 kernel:
(22167,0):dlm_get_lock_resource:878 21751145F96E45649324C9EEF5485248: recovery
map is not empty, but must master $RECOVERY lock now<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:17:36 my_node0 kernel: (22167,0):dlm_do_recovery:524
(22167) Node 0 is the Recovery Master for the Dead Node 1 for Domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:31 my_node0 kernel: ocfs2_dlm: Node 1 joins domain
21751145F96E45649324C9EEF5485248<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:31 my_node0 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Test2 – Node 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:22 my_node1 modprobe: FATAL: Module ocfs2_stackglue
not found.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:23 my_node1 kernel: OCFS2 Node Manager 1.4.4 Tue
Sep 8 11:56:46 PDT 2009 (build 18a3a72794aaca6c0334f456bca873cd)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:23 my_node1 kernel: OCFS2 DLM 1.4.4 Tue Sep 8
11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:23 my_node1 kernel: OCFS2 DLMFS 1.4.4 Tue Sep
8 11:56:46 PDT 2009 (build e6e41b84c785deeea891e5873dbf19ab)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:23 my_node1 kernel: OCFS2 User DLM kernel interface
loaded<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:31 my_node1 kernel: OCFS2 1.4.4 Tue Sep 8
11:56:43 PDT 2009 (build 3a5bffa75b910d5bcdd5c607c4394b1e)<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:31 my_node1 kernel: ocfs2_dlm: Nodes in domain
("21751145F96E45649324C9EEF5485248"): 0 1<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Nov 17 11:19:31 my_node1 kernel: ocfs2: Mounting device (253,8)
on (node 1, slot 1) with ordered data mode.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mark<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'><o:p> </o:p></span></p>
<div>
<div style='border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> Srinivas Eeda
[mailto:srinivas.eeda@oracle.com] <br>
<b>Sent:</b> 16 November 2009 16:05<br>
<b>To:</b> Thompson, Mark<br>
<b>Cc:</b> ocfs2-users@oss.oracle.com<br>
<b>Subject:</b> Re: [Ocfs2-users] 2 node OCFS2 clusters<o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB><o:p> </o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>Thompson, Mark wrote: <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Hi Srini,</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Thanks for the response.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>So are the following statements correct:</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If I stop the networking on node 1, node 0 will continue to allow
OCFS2 filesystems to work and not reboot itself. </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>If I stop the networking on node 0, node 1 (now being the lowest
node?) will continue to allow OCFS2 filesystems to work and not reboot itself.</span><span
lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-GB>In both the
cases node 0 will survive, because that's the node that has lowest node number
(defined in cluster.conf). This applies to the scenario where interconnect went
down but nodes are healthy and are heartbeating to the disk.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>I guess I just need to know if it’s possible to have a 2 node
OCFS2 cluster that will cope with either one of the nodes dying, and have the
remaining node still provide service.</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal style='margin-bottom:12.0pt'><span lang=EN-GB>If node 0
itself panics, reboots then node 1 will survive.<o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Regards,</span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'>Mark </span><span lang=EN-GB><o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";
color:#1F497D'> </span><span lang=EN-GB><o:p></o:p></span></p>
<div>
<div style='border:none;border-top:solid windowtext 1.0pt;padding:3.0pt 0cm 0cm 0cm;
border-color:-moz-use-text-color -moz-use-text-color'>
<p class=MsoNormal><b><span style='font-size:10.0pt;font-family:"Tahoma","sans-serif";
color:windowtext'>From:</span></b><span style='font-size:10.0pt;font-family:
"Tahoma","sans-serif";color:windowtext'> Srinivas Eeda [<a
href="mailto:srinivas.eeda@oracle.com">mailto:srinivas.eeda@oracle.com</a>] <br>
<b>Sent:</b> 16 November 2009 14:57<br>
<b>To:</b> Thompson, Mark<br>
<b>Cc:</b> <a href="mailto:ocfs2-users@oss.oracle.com">ocfs2-users@oss.oracle.com</a><br>
<b>Subject:</b> Re: [Ocfs2-users] 2 node OCFS2 clusters</span><span lang=EN-GB><o:p></o:p></span></p>
</div>
</div>
<p class=MsoNormal><span lang=EN-GB> <o:p></o:p></span></p>
<p class=MsoNormal><span lang=EN-GB>In a cluster with more than 2 nodes, if a network
on one node goes down, that node will evict itself but other nodes will
survive. But in a two node cluster, the node with lowest node number will
survive no mater on which node network went down.<br>
<br>
thanks,<br>
--Srini<br>
<br>
Thompson, Mark wrote: <o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>Hi,</span><span
lang=EN-GB><o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>This is my first
post here so</span><span lang=EN-GB> </span><span lang=EN-GB style='font-family:
"Calibri","sans-serif"'>please be gentle with me.</span><span lang=EN-GB><o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>My question is,
can you have a 2 node OCFS2 cluster, disconnect one node from the network, and
have the remaining node continue to function normally? Currently we have a 2
node cluster and if we stop the NIC that has the OCFS2 o2cb net connection
running on it, the</span><span lang=EN-GB> </span><span lang=EN-GB
style='font-family:"Calibri","sans-serif"'>other node will reboot itself.</span><span
lang=EN-GB> </span><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>I
have researched having a 2 node OCFS2 cluster but so far I have been unable to
find a clear solution. I have looked at the FAQ regarding quorum,</span><span
lang=EN-GB> </span><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>and
my OCFS2 init scripts are enabled etc.</span><span lang=EN-GB><o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>Is this
possible, or should we look at alternative solutions?</span><span lang=EN-GB><o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>Regards,</span><span
lang=EN-GB><o:p></o:p></span></p>
<p><span lang=EN-GB style='font-family:"Calibri","sans-serif"'>Mark</span><span
lang=EN-GB><o:p></o:p></span></p>
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