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тАО05-08-2007 07:44 PM
тАО05-08-2007 07:44 PM
Re: Cannot form DSA0:
Should Nigels idea is hitting the mark, boot a different disk (eg. CD) and do a mount/ov=(id,shad)
This will zero the shadow generation information on the disk.
Steven
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тАО05-08-2007 08:45 PM
тАО05-08-2007 08:45 PM
Re: Cannot form DSA0:
The outputs are :
SYSGEN> SH SYSTEM
Parameter Name Current Default Min. Max. Unit Dynamic
-------------- ------- ------- ------- ------- ---- -------
SYSTEM_CHECK 0 0 0 1 Coded-valu
SYSGEN> SH ALLOC
Parameter Name Current Default Min. Max. Unit Dynamic
-------------- ------- ------- ------- ------- ---- -------
ALLOCLASS 1 0 0 255 Pure-numbe
SYSGEN>
Also,the system is not in a cluster.
I have tried the following steps already:
At the >>> prompt boot the operating system CD ie B DKA600
When the menu option appears, select DCL commands.
at the $$$ prompt Mount/over=(id,shadow) DKB0:
When the disk is mounted write a scratch file to DKB0:
Dismount DKB0:
logout of the DCL interface and shutdown
At the >>> prompt, boot OBERON conversationally ie B -flags 0,1 DKB0
At the sysboot prompt set the parameter shadow_sys_disk to 1
Continue to boot.
The result is just the same.
Thanks.
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тАО05-08-2007 10:21 PM
тАО05-08-2007 10:21 PM
Re: Cannot form DSA0:
if the system has completely written the dump - as shown in your initial post, you should be able to boot without shadowing the system disk and read the dump with ANAL/CRASH SYS$SYSTEM:
To see, if there is anything in the dumpfile at all, try:
$ DUMP/BL=COUNT=2 SYS$SYSTEM:SYSDUMP.DMP
Volker.
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тАО05-09-2007 12:30 AM
тАО05-09-2007 12:30 AM
Re: Cannot form DSA0:
Even after issuing the command :
DUMP/BL=COUNT=2 SYS$SYSTEM:SYSDUMP.DMP
Its showing the same.
OpenVMS (TM) Alpha System dump analyzer
%SDA-E-DUMPEMPTY, dump file contains no valid dump
Not sure if this is right,since the dump file, size is small therefore it is not updating.
Thanks,
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тАО05-09-2007 12:38 AM
тАО05-09-2007 12:38 AM
Re: Cannot form DSA0:
the DUMP command given just dumps out the first 2 blocks of the dumpfile to your terminal screen. Are the values all zeroes ? Do you somewhere see the nodename in the ASCII data ?
Volker.
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тАО05-09-2007 02:57 AM
тАО05-09-2007 02:57 AM
Re: Cannot form DSA0:
I am sending the output.
Thanks
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тАО05-09-2007 06:49 AM
тАО05-09-2007 06:49 AM
Re: Cannot form DSA0:
The 04000180 is a flags longword, and it indicates that the dumpfile write has not completed. It could be that a full dump instead of a partial dump was selected (system parameter dumpstyle) and that the dumpfile is too small. You may want to check that bit 0 is set in dumpstyle (enable partial dumps), and/or you may need to increase the dumpfile size.
Jur.
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тАО05-09-2007 08:52 AM
тАО05-09-2007 08:52 AM
Re: Cannot form DSA0:
The used boot flags (fl) are not common, at least not for me.
Please explain the meaning of these.
Pls. try following:
b -fl 0,1 dkb0
- see what happened.
- if the system crashes again try following:
b -fl 0,1 dkb0
at the sysboot prompt:
show /cluster
show shadow
If it is possible disable shadowing - for troubleshooting purpose -
set shadowing 0
set startup_p1 "min"
cont
If the system is now bootable then we have to check the system parameters
The attachment contains an example of the mentioned system parameter settings.
--------------------------
here are some references for the SRM boot options.
http://h18002.www1.hp.com/alphaserver/docs/userguide/WebHelp/boot_flags_settings_table.htm
http://h18002.www1.hp.com/alphaserver/docs/userguide/WebHelp/boot_osflags.htm
Flags_ Bit Meaning
Value Number
1 0 Bootstrap conversationally
(enables you to modify SYSGEN parameters in SYSBOOT).
2 1 Map XDELTA to a running system
4 2 Stop at initial system breakpoint.
8 3 Perform diagnostic breakpoints.
10 4 Stop at the bootstrap breakpoints.
20 5 Omit header from secondary bootstrap file.
80 7 Prompt for the name of the secondary bootstrap file.
100 8 Halt before secondary bootstrap.
10000 16 Display debug messages during booting.
20000 17 Display user messages during booting.
Regards
Andreas
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тАО05-10-2007 06:54 PM
тАО05-10-2007 06:54 PM
Re: Cannot form DSA0:
04000180
This indicates:
ERRLOGCOMP - errlog write complete
WRITECOMP is not set - dump write not completed
DUMPSYTLE = 1
Did you halt the system while the dump was being written ?
Volker.
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тАО05-10-2007 10:23 PM
тАО05-10-2007 10:23 PM
Re: Cannot form DSA0:
No,halt was not issued anytime.
The sysgen parameters are:
SYSGEN> SH DUMP
Parameter Name Current Default Min. Max. Unit Dynamic
-------------- ------- ------- ------- ------- ---- -------
DUMPSTYLE 1 0 0 -1 Bitmask
DUMPBUG 1 1 0 1 Boolean
SYSGEN>
Thnaks