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<p class="MsoNormal"><span lang="EN-US">Hi, I have a test with ocfs2 as virtual machine stores, using Ubuntu12.04, precise version<span style="color:#1F497D">, with kernel 3.2.X</span>.</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205643:Feb 26 10:35:22 ckvmain kernel: [774929.093922] o2net: No longer connected to node cvkslave (num 1) at 192.168.100.12:7100</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205644:Feb 26 10:35:22 ckvmain kernel: [774929.094017] o2cb: o2dlm has evicted node 1 from domain 8AAEFC21BC6B4CE0A02DF3C10737AB14</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205645:Feb 26 10:35:23 ckvmain kernel: [774930.342401] o2dlm: Begin recovery on domain 8AAEFC21BC6B4CE0A02DF3C10737AB14 for node 1</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205646:Feb 26 10:35:23 ckvmain kernel: [774930.344087] o2dlm: Node 2 (me) is the Recovery Master for the dead node 1 in domain 8AAEFC21BC6B4CE0A02DF3C10737AB14</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205647:Feb 26 10:35:24 ckvmain kernel: [774931.093949] o2net: Connected to node cvkslave (num 1) at 192.168.100.12:7100</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205648:Feb 26 10:35:28 ckvmain kernel: [774935.332139] o2dlm: End recovery on domain 8AAEFC21BC6B4CE0A02DF3C10737AB14</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205649:Feb 26 10:35:28 ckvmain kernel: [774935.343294] ocfs2: Begin replay journal (node 1, slot 0) on device (8,16)</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205790:Feb 26 10:35:30 ckvmain kernel: [774937.819459] ocfs2: End replay journal (node 1, slot 0) on device (8,16)</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205791:Feb 26 10:35:30 ckvmain kernel: [774937.855776] ocfs2: Beginning quota recovery on device (8,16) for slot 0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205792:Feb 26 10:35:30 ckvmain kernel: [774937.858244] ocfs2: Finishing quota recovery on device (8,16) for slot 0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205793:Feb 26 10:35:34 ckvmain kernel: [774941.094705] o2net: No longer connected to node cvkslave (num 1) at 192.168.100.12:7100</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">205794:Feb 26 10:35:36 ckvmain kernel: [774943.099069] o2net: Connected to node cvkslave (num 1) at 192.168.100.12:7100</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207442:Feb 26 10:37:31 ckvmain kernel: [775057.583863] ------------[ cut here ]------------</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207443:Feb 26 10:37:31 ckvmain kernel: [775057.584119] kernel BUG at fs/ocfs2/dlm/dlmast.c:357!</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207444:Feb 26 10:37:31 ckvmain kernel: [775057.584390] invalid opcode: 0000 [#1] SMP
</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207445:Feb 26 10:37:31 ckvmain kernel: [775057.584611] CPU 14
</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207446:Feb 26 10:37:31 ckvmain kernel: [775057.584722] Modules linked in: ip6table_filter ip6_tables iptable_filter ip_tables ebtable_nat ebtables x_tables ocfs2(O) quota_tree nls_utf8 cifs 8021q
garp stp kvm_intel kvm ocfs2_dlmfs(O) ocfs2_stack_o2cb(O) ocfs2_dlm(O) ocfs2_nodemanager(O) ocfs2_stackglue(O) configfs openvswitch_mod(O) vesafb ib_iser rdma_cm ib_cm iw_cm ib_sa ib_mad ib_core ib_addr iscsi_tcp libiscsi_tcp libiscsi scsi_transport_iscsi
nfsd nfs lockd fscache auth_rpcgss nfs_acl sunrpc radeon ttm drm_kms_helper drm psmouse i2c_algo_bit serio_raw joydev hpilo acpi_power_meter i7core_edac edac_core mac_hid lp parport usbhid bnx2 hid hpsa</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207447:Feb 26 10:37:31 ckvmain kernel: [775057.587731]
</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207448:Feb 26 10:37:31 ckvmain kernel: [775057.587808] Pid: 28020, comm: kworker/u:1 Tainted: G O 3.2.0-23-generic #36-Ubuntu HP ProLiant DL380 G7</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207449:Feb 26 10:37:31 ckvmain kernel: [775057.605648] RIP: 0010:[<ffffffffa044fcad>] [<ffffffffa044fcad>] dlm_proxy_ast_handler+0x82d/0xa10 [ocfs2_dlm]</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207450:Feb 26 10:37:31 ckvmain kernel: [775057.624512] RSP: 0018:ffff8810fa9cbc80 EFLAGS: 00010246</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207451:Feb 26 10:37:31 ckvmain kernel: [775057.634008] RAX: 0000000000000002 RBX: ffff880134922000 RCX: 000000000000001d</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207452:Feb 26 10:37:31 ckvmain kernel: [775057.652535] RDX: ffff8811c4a40000 RSI: ffff880134922029 RDI: ffff8808e0a2406c</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207453:Feb 26 10:37:31 ckvmain kernel: [775057.671971] RBP: ffff8810fa9cbd20 R08: 0000000000000030 R09: 0000000000000000</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207454:Feb 26 10:37:31 ckvmain kernel: [775057.691922] R10: ca00000000000002 R11: 0000000000000001 R12: 0000000000000000</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207455:Feb 26 10:37:31 ckvmain kernel: [775057.712323] R13: ffff8808e0a24000 R14: 000000000000001f R15: ffff8811c49444d0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207456:Feb 26 10:37:31 ckvmain kernel: [775057.732965] FS: 0000000000000000(0000) GS:ffff8808fbce0000(0000) knlGS:0000000000000000</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207457:Feb 26 10:37:31 ckvmain kernel: [775057.753749] CS: 0010 DS: 0000 ES: 0000 CR0: 000000008005003b</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207458:Feb 26 10:37:31 ckvmain kernel: [775057.764460] CR2: 00000000004521ee CR3: 0000000001c05000 CR4: 00000000000006e0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207459:Feb 26 10:37:31 ckvmain kernel: [775057.785292] DR0: 0000000000000003 DR1: 00000000000000b0 DR2: 0000000000000001</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207460:Feb 26 10:37:31 ckvmain kernel: [775057.806254] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000400</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207461:Feb 26 10:37:31 ckvmain kernel: [775057.827160] Process kworker/u:1 (pid: 28020, threadinfo ffff8810fa9ca000, task ffff8811c49444d0)</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207462:Feb 26 10:37:31 ckvmain kernel: [775057.848113] Stack:</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207463:Feb 26 10:37:31 ckvmain kernel: [775057.858177] ffff88117e3e0478 ffff8810fa9cbca0 0000000000000286 ffff88117e3e0478</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207464:Feb 26 10:37:31 ckvmain kernel: [775057.878536] ffff8810fa9cbd00 ffffffff81078553 ffff8810fa9cbcf0 ffffffff81082bea</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207465:Feb 26 10:37:31 ckvmain kernel: [775057.899471] ffff8810fa9cbd20 ffffffffa0400f01 ca00000000000002 0000000000000000</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207466:Feb 26 10:37:31 ckvmain kernel: [775057.920272] Call Trace:</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207467:Feb 26 10:37:31 ckvmain kernel: [775057.930466] [<ffffffff81078553>] ? mod_timer+0x143/0x2f0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207468:Feb 26 10:37:31 ckvmain kernel: [775057.940754] [<ffffffff81082bea>] ? queue_delayed_work_on+0xba/0x140</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207469:Feb 26 10:37:31 ckvmain kernel: [775057.950933] [<ffffffffa0400f01>] ? o2net_listen_data_ready+0x61/0xe0 [ocfs2_nodemanager]</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207470:Feb 26 10:37:31 ckvmain kernel: [775057.970814] [<ffffffffa0403836>] o2net_rx_until_empty+0x506/0xdf0 [ocfs2_nodemanager]</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207471:Feb 26 10:37:31 ckvmain kernel: [775057.990706] [<ffffffff8165c46e>] ? _raw_spin_lock+0xe/0x20</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207472:Feb 26 10:37:31 ckvmain kernel: [775058.000670] [<ffffffff8105617a>] ? finish_task_switch+0x4a/0xf0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207473:Feb 26 10:37:31 ckvmain kernel: [775058.010662] [<ffffffffa0403330>] ? o2net_shutdown_sc+0x1a0/0x1a0 [ocfs2_nodemanager]</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207474:Feb 26 10:37:31 ckvmain kernel: [775058.029786] [<ffffffff81084e2a>] process_one_work+0x11a/0x480</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207475:Feb 26 10:37:31 ckvmain kernel: [775058.039393] [<ffffffff81085bd4>] worker_thread+0x164/0x370</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207476:Feb 26 10:37:31 ckvmain kernel: [775058.048794] [<ffffffff81085a70>] ? manage_workers.isra.29+0x130/0x130</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207477:Feb 26 10:37:31 ckvmain kernel: [775058.058189] [<ffffffff8108a42c>] kthread+0x8c/0xa0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207478:Feb 26 10:37:31 ckvmain kernel: [775058.067421] [<ffffffff81666bf4>] kernel_thread_helper+0x4/0x10</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207479:Feb 26 10:37:31 ckvmain kernel: [775058.076537] [<ffffffff8108a3a0>] ? flush_kthread_worker+0xa0/0xa0</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207480:Feb 26 10:37:31 ckvmain kernel: [775058.085518] [<ffffffff81666bf0>] ? gs_change+0x13/0x13</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207481:Feb 26 10:37:31 ckvmain kernel: [775058.094265] Code: 1a f7 ff ff e9 7e fc ff ff 48 bb 40 00 00 00 00 00 00 10 48 85 1d 24 c7 fb ff 74 0d 48 85 1d 5b e6 fb ff 0f 84 3f 01 00 00 0f 0b <0f>
0b 0f 0b 65 48 8b 34 25 00 c5 00 00 8b 96 ac 02 00 00 41 b9 </span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207482:Feb 26 10:37:31 ckvmain kernel: [775058.120447] RIP [<ffffffffa044fcad>] dlm_proxy_ast_handler+0x82d/0xa10 [ocfs2_dlm]</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207483:Feb 26 10:37:31 ckvmain kernel: [775058.137954] RSP <ffff8810fa9cbc80></span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207484:Feb 26 10:37:31 ckvmain kernel: [775058.158120] ---[ end trace a161d655692fc859 ]---</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207485:Feb 26 10:37:31 ckvmain kernel: [775058.166729] BUG: unable to handle kernel paging request at fffffffffffffff8</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D">207486:Feb 26 10:37:31 ckvmain kernel: [775058.175331] IP: [<ffffffff8108a8c1>] kthread_data+0x11/0x20</span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"> </span></p>
<p class="MsoNormal"><span lang="EN-US" style="color:#1F497D"> </span></p>
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