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тАО08-20-2008 05:58 AM
тАО08-20-2008 05:58 AM
Yesterday I changed a faulty CPU fan in one of our DS10Ls. Since then the system crashes seemingly randomly. However, I noticed a pattern to crash at OTS$MOVE_C+00024, but with various bugcheck types in various images. More recently it seems consistently crashing with "SHADDETINCON, SHADOWING detects inconsistent state" early in the boot.
The configuration is 3 DS10Ls (1 vote each) connected to two EVAs holding the shadowed system and data disks, and a quorum disk (2 votes); OpenVMS Alpha V8.3 with all current ECOs.
Anyone seen something like this before?
I'm appending all CLUE files (the last one generated by hand, as I have not yet tried to reboot the machine).
Thanks,
Martin
Solved! Go to Solution.
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тАО08-20-2008 06:58 AM
тАО08-20-2008 06:58 AM
Re: Seemingly random crashes with VMS 8.3 Alpha
I seem to be unable to download your attachment. Could you mail it to me ?
Volker.
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тАО08-20-2008 10:19 AM
тАО08-20-2008 10:19 AM
Re: Seemingly random crashes with VMS 8.3 Alpha
the first obvious question would be: what else did you change (on the system disk), since you last booted that DS10L or any other node, which boots from that disk ?
The 19 crashes may seem random, but they show just only a few different footprints:
SHADDETINCON, 2 different offsets
SSRVEXCEPTN, ACCVIO on S0 address, OTS$MOVEC+00024, RA=EXE$PERSONA_IMPORT_ARB_C+001F4
UNXSIGNAL, seems to go together with stack corruption
If you want to rule out a HW problem: can you boot the other DS10L from that root and vice versa ? Otherwise these kind of 'random' footprints may look like pool corruption ? Set SYSTEM_CHECK=1 ?
Volker.
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тАО08-20-2008 10:42 AM
тАО08-20-2008 10:42 AM
SolutionEXE$PERSONA_IMPORT_ARB calls OTS$MOVE to copy data from the JIB to the PSB. I would guess R18 to point to the SRC address.
But if you look at the 64-bit values for R18 in the SSRVEXCEPT crashes, you'll notice, that the high-order longword for this S0 space address is not always FFFFFFFF !!
$ sea *helios*.lis "Argument #3 "
R18 64-bit values seen are:
FFF7F7FF.81FB778C JIB+0000C
FFFFF7FF.8203968C JIB+0000C
Maybe the bad CPU fan has actually caused a more severe HW problem...
Volker.
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тАО08-22-2008 02:35 AM
тАО08-22-2008 02:35 AM
Re: Seemingly random crashes with VMS 8.3 Alpha
Thanks, Volker.