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</o:shapelayout></xml><![endif]--></head><body lang=EN-IN link=blue vlink=purple><div class=WordSection1><p class=MsoNormal><span style='color:#17365D'>Hi All,<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#17365D'>I have two Linux nodes with RHEL 4.5 32 bit OS and i’m using <span style='background:yellow;mso-highlight:yellow'>OCFS2 1.2.9</span> in it. Out of two nodes one node got kernel panic. Post rebooting the node its up and running. As per log analysis i found the following error in <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>/var/log/messages. Pls let me know what is the cause of this error and what can be done in order to fix it. <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):dlm_drop_lockres_ref:2298 ERROR: while dropping ref on CC1E8AF9297E4FE09285D6D1E322E0BA:M00000000000000003449679448aa6e (master=1) got -22.<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):dlm_print_one_lock_resource:461 lockres: M00000000000000003449679448aa6e, owner=1, state=64<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):__dlm_print_one_lock_resource:476 lockres: M00000000000000003449679448aa6e, owner=1, state=64<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):__dlm_print_one_lock_resource:478 last used: 1374576451, on purge list: yes<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):dlm_print_lockres_refmap:444 refmap nodes: [ ], inflight=0<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):__dlm_print_one_lock_resource:480 granted queue: <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):__dlm_print_one_lock_resource:495 converting queue: <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: (23725,7):__dlm_print_one_lock_resource:510 blocked queue: <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: ------------[ cut here ]------------<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: kernel BUG at /rpmbuild/smushran/BUILD/ocfs2-1.2.9/fs/ocfs2/dlm/dlmmaster.c:2300!<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: invalid operand: 0000 [#1]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: SMP <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: Modules linked in: sg mptctl mptbase ipmi_devintf ipmi_si ipmi_msghandler iptable_nat ip_conntrack iptable_mangle iptable_filter ip_tables boston(U) parport_pc lp parport edp10(U) nfs lockd nfs_acl md5 ipv6 autofs4 i2c_dev i2c_core ocfs2(U) debugfs(U) ocfs2_dlmfs(U) ocfs2_dlm(U) ocfs2_nodemanager(U) configfs(U) sunrpc dm_mirror dm_multipath dm_mod emcphr(U) emcpmpap(U) emcpmpaa(U) emcpmpc(U) emcpmp(U) emcp(U) emcplib(U) button battery ac hw_random bnx2(U) ext3 jbd ata_piix libata megaraid_sas usb_storage uhci_hcd ohci_hcd ehci_hcd sd_mod qla2xxx(U) scsi_mod qla2xxx_conf(U)</span><span style='color:#17365D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: CPU: 7<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: EIP: 0060:[<f97c46a0>] Tainted: P VLI<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: EFLAGS: 00010246 (2.6.9-55.ELsmp) <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: EIP is at dlm_drop_lockres_ref+0x24f/0x261 [ocfs2_dlm]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: eax: 00000000 ebx: e3b09bc0 ecx: f06f0e00 edx: e3b09c08<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: esi: 00000000 edi: f06f0f03 ebp: 0000001f esp: f06f0ecc<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: ds: 007b es: 007b ss: 0068<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: Process dlm_thread (pid: 23725, threadinfo=f06f0000 task=eb8e5870)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: Stack: f76844c0 e3b09bc0 e73efc00 ffffffea 00000000 1f000000 3030304d 30303030 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: 30303030 30303030 34343330 39373639 61383434 00653661 00000000 00000000 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: 00000000 00000000 00000000 00000000 00000000 00000000 e3b09bc0 e3b09bc0 <o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: Call Trace:<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<f97d694d>] dlm_purge_lockres+0x121/0x2c9 [ocfs2_dlm]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<f97d6b72>] dlm_run_purge_list+0x7d/0xc6 [ocfs2_dlm]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<f97d78ff>] dlm_thread+0x72/0x46b [ocfs2_dlm]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<c012052d>] autoremove_wake_function+0x0/0x2d<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<c012052d>] autoremove_wake_function+0x0/0x2d<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<f97d788d>] dlm_thread+0x0/0x46b [ocfs2_dlm]<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<c01342ed>] kthread+0x73/0x9b<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<c013427a>] kthread+0x0/0x9b<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: [<c01041f5>] kernel_thread_helper+0x5/0xb<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>kernel: Code: 72 40 68 fa 08 00 00 68 f2 84 7d f9 ff 70 10 ff b1 94 00 00 00 68 81 cb 7d f9 e8 5e e2 95 c6 83 c4 28 8b 44 24 04 e8 f6 64 ff ff <0f> 0b fc 08 8b ad 7d f9 83 c4 60 89 f0 5b 5e 5f 5d c3 55 57 56<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D;background:yellow;mso-highlight:yellow'>kernel: <0>Fatal exception: panic in 5 seconds</span><span style='color:#17365D'><o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#17365D'><o:p> </o:p></span></p><p class=MsoNormal><span style='color:#17365D'>filename: /lib/modules/2.6.9-55.ELsmp/kernel/fs/ocfs2/ocfs2.ko<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>author: Oracle<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>license: GPL<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>description: OCFS2 1.2.9 Mon May 19 12:55:09 PDT 2008 (build a693806cb619dd7f225004092b675ede)<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>version: 1.2.9 1B43458FD47258934A48F1C<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>vermagic: 2.6.9-55.ELsmp SMP 686 REGPARM 4KSTACKS gcc-3.4<o:p></o:p></span></p><p class=MsoNormal><span style='color:#17365D'>depends: ocfs2_nodemanager,ocfs2_dlm,jbd,debugfs<o:p></o:p></span></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";color:#1F497D'>Regards<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US style='font-family:"Courier New";color:#1F497D'>V.Vasanth<o:p></o:p></span></p></div></body></html>