After I implemented Windows clustering, the active node always fail to standby node many time but it always fail around 6:30AM. The belowing is minidump

Opened log file 'c:\debuglog1.txt'
1: kd> .syspath srv*c:\symbols*http://msdl.microsoft.com/download/symbols
^ Syntax error in '.syspath srv*c:\symbols*http://msdl.microsoft.com/download/symbols'
1: kd> .sympath srv*c:\symbols*http://msdl.microsoft.com/download/symbols
Symbol search path is: srv*c:\symbols*http://msdl.microsoft.com/download/symbols
1: kd> .reload;!analyze -v;r;kv;lmnt;.logclose;q
Loading Kernel Symbols
.................................................. .................................................. .
Loading unloaded module list
........
Loading User Symbols
No export analyze found
eax=8c9cc13c ebx=0000000a ecx=00000000 edx=00000000 esi=bfeac932 edi=20002000
eip=8046ce9c esp=bde04088 ebp=bde0409c iopl=0 nv up ei ng nz na po nc
cs=0008 ss=0010 ds=0023 es=0023 fs=0030 gs=0000 efl=00000286
nt!KiTrap0E+0x210:
8046ce9c f7457000000200 test dword ptr [ebp+0x70],0x20000 ss:0010:bde0410c=00010206
ChildEBP RetAddr Args to Child
bde0409c bfeac932 8c6b7602 bde040dc bfeabe4f nt!KiTrap0E+0x210 (FPO: [0,0] TrapFrame @ bde0409c)
Unable to load image SCSIPORT.SYS, Win32 error 2
*** WARNING: Unable to verify timestamp for SCSIPORT.SYS
*** ERROR: Module load completed but symbols could not be loaded for SCSIPORT.SYS
WARNING: Stack unwind information not available. Following frames may be wrong.
bde0410c 8c6c8b88 8add7dc8 8c6a2b28 8b2bef48 SCSIPORT+0x3932
bde04120 bfeaa9d4 8c6c8b88 8c6a2b28 8c6c8c84 0x8c6c8b88
bde04150 8041f977 8c6c8ad0 8b43f008 8b43f008 SCSIPORT+0x19d4
bde04174 bfeaa4ec 8c6c8ad0 8b43f008 00000000 nt!IoStartPacket+0x6f (FPO: [Non-Fpo])
bde041a8 bfeab1d0 8c6c8ad0 8b43f008 8add7dc8 SCSIPORT+0x14ec
bde041dc bfea9390 8c6a2a70 8b43f008 8b43f008 SCSIPORT+0x21d0
Unable to load image EmcpBase.sys, Win32 error 2
*** WARNING: Unable to verify timestamp for EmcpBase.sys
*** ERROR: Module load completed but symbols could not be loaded for EmcpBase.sys
bde04224 bff8a65f 8c628bc8 8ad5bc48 00000000 SCSIPORT+0x390
Unable to load image EmcpMPC.sys, Win32 error 2
*** WARNING: Unable to verify timestamp for EmcpMPC.sys
*** ERROR: Module load completed but symbols could not be loaded for EmcpMPC.sys
bde04240 f7024f5a 00000000 00000000 8c652020 EmcpBase+0x765f
bde04268 f7025419 8ad5be48 8ad5be48 8c652000 EmcpMPC+0x4f5a
bde04288 f70263e0 8c652000 8ad5bd38 8ad5bc48 EmcpMPC+0x5419
bde042a0 bff8a618 00000001 8ad5bc48 8ad5be08 EmcpMPC+0x63e0
Unable to load image EmcpPN.sys, Win32 error 2
*** WARNING: Unable to verify timestamp for EmcpPN.sys
*** ERROR: Module load completed but symbols could not be loaded for EmcpPN.sys
bde042bc f74198ad f7028170 00000000 8ad5be24 EmcpBase+0x7618
bde042dc f741a7f1 8c606008 8ad5bc48 8ad5bd28 EmcpPN+0x18ad
bde042fc bff8a618 00000000 8ad5bc48 8ad5bc90 EmcpPN+0x27f1
bde04318 bff8ad6d f741b110 00000000 8ad5bc48 EmcpBase+0x7618
bde0434c bff8c168 8c607b40 8c615020 00000004 EmcpBase+0x7d6d
bde0436c bff8c222 8c615020 8b43f108 8c615020 EmcpBase+0x9168
bde043b0 8041e0bf 8c615430 02000000 8c614020 EmcpBase+0x9222
bde043c8 8041e0bf 8c614020 8b43f008 8b43f150 nt!IopfCallDriver+0x35 (FPO: [0,0,2])
start end module name
80062000 80076460 hal hal.dll Fri Mar 21 09:04:42 2003 (3E7A733A)
80400000 805a5680 nt ntkrpamp.exe Thu Oct 21 10:55:56 2004 (4177334C)
a0000000 a0190000 win32k win32k.sys Thu Oct 06 16:33:42 2005 (4344EF76)
bd821000 bd83cfc0 naiavf5x naiavf5x.sys Wed Mar 30 02:32:47 2005 (4249AD5F)
bd849000 bd84b180 EntDrv50 EntDrv50.sys Tue Aug 09 01:27:03 2005 (42F7A3F7)
bdcd5000 bdce4a20 ipsec ipsec.sys Wed Apr 30 06:04:59 2003 (3EAF051B)
be041000 be043f20 spud spud.sys Sat Nov 20 06:36:27 1999 (3835DEFB)
be6fd000 be70bfe0 Cdfs Cdfs.SYS Wed Apr 16 10:58:53 2003 (3E9CD4FD)
be9bd000 be9f7440 srv srv.sys Tue May 03 15:10:42 2005 (42773202)
bec14000 bec247a0 clusnet clusnet.sys Thu Mar 13 01:02:45 2003 (3E6F7645)
bec25000 bec424a0 afd afd.sys Wed Apr 30 15:45:29 2003 (3EAF8D29)
bedd3000 bedd4000 ati2drad ati2drad.dll unavailable (00000000)
bee52000 bee743c0 Fastfat Fastfat.SYS Thu Jan 16 02:48:39 2003 (3E25BB17)
bee75000 beed9ca0 mrxsmb mrxsmb.sys Thu Jan 20 14:25:21 2005 (41EF5CE1)
beeec000 bef15900 rdbss rdbss.sys Fri Dec 03 10:37:11 2004 (41AFDF67)
bef16000 bef3de00 netbt netbt.sys Thu Jul 17 02:44:26 2003 (3F15AB1A)
bef66000 befb81a0 tcpip tcpip.sys Sat Feb 26 05:37:45 2005 (421FA8B9)
befd9000 befeac40 clusdisk clusdisk.sys Fri Jun 20 08:16:09 2003 (3EF26059)
bf00b000 bf00e6c0 dump_scsiport dump_scsiport.sys Wed Feb 26 02:18:04 2003 (3E5BC16C)
bf95d000 bf9873a0 update update.sys Wed Apr 16 11:22:01 2003 (3E9CDA69)
bf988000 bf9a3b40 ks ks.sys Wed Apr 16 11:02:11 2003 (3E9CD5C3)
bf9a4000 bf9baba0 ndiswan ndiswan.sys Wed Apr 30 06:05:01 2003 (3EAF051D)
bf9bb000 bf9d9f40 q57w2k q57w2k.sys Fri Jan 28 09:04:25 2005 (41F99DA9)
bf9da000 bf9f0a80 cqmhpw2k cqmhpw2k.sys Mon May 19 23:20:22 2003 (3EC90446)
bfa11000 bfa18d00 wanarp wanarp.sys Fri Aug 16 19:25:01 2002 (3D5CEF1D)
bfa29000 bfa2e240 Msfs Msfs.SYS Wed Oct 27 0632 1999 (3816377C)
bfa31000 bfa38f60 mnmdd_bfa31000 mnmdd.dll Tue Nov 30 16:33:22 1999 (384399E2)
bfa65000 bfa68580 vga vga.sys Sun Sep 26 01:37:40 1999 (37ED1674)
bfa69000 bfaa8480 cpqasm2 cpqasm2.sys Sat Mar 05 04:12:39 2005 (4228CF47)
bfaa9000 bfafe600 ati2mpad ati2mpad.sys Wed Aug 20 08:20:11 2003 (3F42CCCB)
bfc27000 bfc292e0 ndistapi ndistapi.sys Thu Jan 16 02:54:15 2003 (3E25BC67)
bfc37000 bfc3a640 serenum serenum.sys Thu Jan 16 02:47:01 2003 (3E25BAB5)
bfcaf000 bfcc9000 CPQPHP CPQPHP.SYS Fri Apr 23 23:44:10 2004 (408947DA)
bfcc9000 bfcde640 Mup Mup.sys Thu Jan 16 02:54:01 2003 (3E25BC59)
bfcdf000 bfd5c800 Ntfs Ntfs.sys Thu Jun 05 05:11:33 2003 (3EDE6E95)
bfd5d000 bfd6e7c0 KSecDD KSecDD.sys Sun Sep 21 07:32:19 2003 (3F6CF193)
bfd6f000 bfd811c0 Dfs Dfs.sys Wed Feb 12 09:19:06 2003 (3E49AF1A)
bfdf0000 bfea83a0 ql2300 ql2300.sys Fri Apr 09 07:54:13 2004 (4075F435)
bfea9000 bfebb0c0 SCSIPORT SCSIPORT.SYS Sat May 17 08:11:02 2003 (3EC58C26)
bfebc000 bfee3140 LsiCsb6 LsiCsb6.sys Fri Aug 01 03:38:06 2003 (3F297E2E)
bfee4000 bfef9180 atapi atapi.sys Wed Apr 02 01:08:25 2003 (3E89D599)
bfefa000 bff23aa0 NDIS NDIS.SYS Wed Apr 30 06:05:01 2003 (3EAF051D)
bff24000 bff82f80 vxio vxio.sys Fri Nov 05 14:05:41 2004 (418B2645)
bff83000 bffba780 EmcpBase EmcpBase.sys Mon Sep 08 22:58:38 2003 (3F5CA72E)
bffbb000 bffd7220 ftdisk ftdisk.sys Tue Apr 01 0558 2003 (3E88BF86)
bffd8000 bffffc20 ACPI ACPI.sys Thu Jan 16 02:44:22 2003 (3E25BA16)
f7000000 f700e6a0 pci pci.sys Thu Jan 16 02:44:07 2003 (3E25BA07)
f7010000 f701b680 isapnp isapnp.sys Thu Jan 16 02:43:47 2003 (3E25B9F3)
f7020000 f7029900 EmcpMPC EmcpMPC.sys Mon Sep 08 22:58:58 2003 (3F5CA742)
f7030000 f703faa0 adpu160m adpu160m.sys Thu Jan 16 02:42:27 2003 (3E25B9A3)
f7040000 f704a4c0 symmpi symmpi.sys Wed May 26 23:26:28 2004 (40B4C534)
f7050000 f7058700 CLASSPNP CLASSPNP.SYS Thu Jan 16 02:42:51 2003 (3E25B9BB)
f7060000 f706c4c0 VIDEOPRT VIDEOPRT.SYS Thu Jan 16 02:47:20 2003 (3E25BAC8)
f70a0000 f70af400 serial serial.sys Wed Apr 16 11:19:39 2003 (3E9CD9DB)
f70b0000 f70bb680 i8042prt i8042prt.sys Wed Apr 16 11:00:59 2003 (3E9CD57B)
f70c0000 f70cdd00 CPQCISSE CPQCISSE.sys Sat Mar 12 01:15:18 2005 (4231E036)
f70d0000 f70dca80 rasl2tp rasl2tp.sys Wed Apr 30 06:05:06 2003 (3EAF0522)
f70e0000 f70ebc40 raspptp raspptp.sys Thu May 15 06:47:00 2003 (3EC2D574)
f7100000 f7109be0 usbhub usbhub.sys Wed Mar 19 06:30:41 2003 (3E77AC21)
f7110000 f7118240 Fips Fips.SYS Tue May 09 22:28:29 2000 (39182E9D)
f7140000 f7149ce0 NDProxy NDProxy.SYS Fri Oct 01 06:25:35 1999 (37F3F16F)
f7150000 f7158fa0 Npfs Npfs.SYS Sun Oct 10 06:58:07 1999 (37FFD68F)
f7160000 f7168680 msgpc msgpc.sys Thu Jan 16 02:54:25 2003 (3E25BC71)
f7170000 f717e460 mvstdi5x mvstdi5x.sys Thu Feb 03 02:16:00 2005 (420126F0)
f7180000 f71881a0 netbios netbios.sys Wed Oct 13 02:34:19 1999 (38038D3B)
f7280000 f7285520 PCIIDEX PCIIDEX.SYS Wed Feb 26 01:31:08 2003 (3E5BB66C)
f7288000 f728f4c0 MountMgr MountMgr.sys Wed Feb 11 02:47:53 2004 (40293569)
f7290000 f7295c80 EmcpCG EmcpCG.sys Mon Sep 08 22:58:47 2003 (3F5CA737)
f7298000 f729f000 EmcpMP EmcpMP.sys Mon Sep 08 22:58:52 2003 (3F5CA73C)
f72a0000 f72a6320 symc8xx symc8xx.sys Sat Mar 31 00:01:54 2001 (3AC4BC02)
f72a8000 f72ad180 sym_hi sym_hi.sys Sun Sep 26 02:11:49 1999 (37ED1E75)
f72b0000 f72b4080 cpqcissm cpqcissm.sys Sat Feb 12 02:44:10 2005 (420D0B0A)
f72b8000 f72bf720 disk disk.sys Thu Jan 16 02:43:05 2003 (3E25B9C9)
f72d8000 f72dc0e0 raspti raspti.sys Sat Oct 09 03:45:10 1999 (37FE57D6)
f72e8000 f72ece80 CpqCiDrv CpqCiDrv.sys Sat Oct 30 00:23:08 2004 (41827C7C)
f72f8000 f72fca60 flpydisk flpydisk.sys Thu Jan 16 02:42:52 2003 (3E25B9BC)
f7300000 f7301000 fdc fdc.sys unavailable (00000000)
f7310000 f7315400 mouclass mouclass.sys Thu Feb 20 23:37:45 2003 (3E550459)
f7318000 f731ea20 EFS EFS.SYS Thu Jan 16 02:46:55 2003 (3E25BAAF)
f7320000 f7325ec0 kbdclass kbdclass.sys Thu Feb 20 23:37:30 2003 (3E55044A)
f7330000 f7336c40 cdrom cdrom.sys Thu Jan 16 02:43:04 2003 (3E25B9C8)
f7338000 f733f000 sysmgmt sysmgmt.sys Sat Mar 05 04:11:12 2005 (4228CEF0)
f7340000 f7345fc0 openhci openhci.sys Sat Mar 01 07:28:59 2003 (3E5FFECB)
f7358000 f735cfc0 USBD USBD.SYS Thu Jan 23 00:05:33 2003 (3E2ECF5D)
f7390000 f7394080 dump_cpqcissm dump_cpqcissm.sys Sat Feb 12 02:44:10 2005 (420D0B0A)
f7398000 f739c400 ptilink ptilink.sys Thu Jan 16 02:47:15 2003 (3E25BAC3)
f7410000 f7412a20 BOOTVID BOOTVID.dll Thu Nov 04 08:24:33 1999 (3820E051)
f7414000 f7416d00 PartMgr PartMgr.sys Thu Jan 16 02:43:07 2003 (3E25B9CB)
f7418000 f741be00 EmcpPN EmcpPN.sys Mon Sep 08 22:59:02 2003 (3F5CA746)
f741c000 f741fe60 TDI TDI.SYS Thu Jan 16 0226 2003 (3E25BCEA)
f7420000 f7423fe0 symc810 symc810.sys Sun Sep 26 02:11:49 1999 (37ED1E75)
f7424000 f7427360 cpqarry2 cpqarry2.sys Sat Oct 02 06:47:57 1999 (37F5482D)
f7500000 f7501d20 Diskperf Diskperf.sys Thu Feb 13 04:34:38 2003 (3E4ABDEE)
f7520000 f7521ca0 Fs_Rec Fs_Rec.SYS Thu Jan 16 02:53:30 2003 (3E25BC3A)
f7528000 f7529e40 rasacd rasacd.sys Sun Sep 26 01:41:23 1999 (37ED1753)
f75c8000 f75c8f80 WMILIB WMILIB.SYS Sun Sep 26 01:36:47 1999 (37ED163F)
f75c9000 f75c9b00 pciide pciide.sys Thu Jan 16 02:43:03 2003 (3E25B9C7)
f75e0000 f75e0a40 audstub audstub.sys Sun Sep 26 01:35:33 1999 (37ED15F5)
f75f9000 f75f9d80 swenum swenum.sys Sun Sep 26 01:36:31 1999 (37ED162F)
f760e000 f760e9e0 Null Null.SYS Sun Sep 26 01:34:58 1999 (37ED15D2)
f7616000 f7616ee0 Beep Beep.SYS Thu Oct 21 05:18:59 1999 (380E3FD3)
f761b000 f761bf80 mnmdd mnmdd.SYS Sun Sep 26 01:37:40 1999 (37ED1674)

Unloaded modules:
bd564000 bd579000 VGA.dll
Timestamp: unavailable (00000000)
Checksum: 00000000
bfd82000 bfdf0000 vxboot.sys
Timestamp: unavailable (00000000)
Checksum: 00000000
f7338000 f7340000 mnmdd.dll
Timestamp: unavailable (00000000)
Checksum: 00000000
bee15000 bee2a000 VGA.dll
Timestamp: unavailable (00000000)
Checksum: 00000000
bedd3000 bee2a000 ati2drad.dll
Timestamp: unavailable (00000000)
Checksum: 00000000
f7190000 f7199000 redbook.sys
Timestamp: unavailable (00000000)
Checksum: 00000000
bfa39000 bfa3e000 Cdaudio.SYS
Timestamp: unavailable (00000000)
Checksum: 00000000
bfb03000 bfb06000 Sfloppy.SYS
Timestamp: unavailable (00000000)
Checksum: 00000000
Closing open log file c:\debuglog1.txt

please help what is the root cause of this Windows clustering failure.

What do you have as scheduled operations @ 6:30 AM?

Perhaps some other ideas here:

http://www.microsoft.com/windowsserv...g/default.mspx

http://www.datapipe.com/clustering.aspx

Thanks a lot for your recommendation. We don't have any schedule operations at 6:30AM. Last failure occure on 20 June 2006 and the previous fauilure occure on 20, 18 and 8 June 2006.

How about the Minidump is it useful to find the root cause?

More ideas:

http://support.microsoft.com/?kbid=839635

http://www.google.com/search?sourcei...SCSIPORT%2eSYS

Link that you gave us is for fix *** WARNING: Unable to verify timestamp for SCSIPORT.SYS

How about these warning,

*** WARNING: Unable to verify timestamp for EmcpBase.sys
*** WARNING: Unable to verify timestamp for EmcpMPC.sys
*** WARNING: Unable to verify timestamp for EmcpPN.sys

Can you ID the source of Emcp on your computer?